Saturday, February 28, 2009

New job, new house, new flying club

Near the end of last year we moved to Sydney, about 1000km down the Pacific Highway from Brisbane. New place, new job, and very little time to think about flying. I didn’t even use the flight simulator on the home computer a single time in the last three months. The fact that our new house is only fifteen minutes walk to the beach and that this is summer didn’t help either.

With the new year though the flying bug came back biting. It was time to find a new club to hire aircraft from, and hopefully also get a bit more flying training under my belt. A retractable undercarriage endorsement and a Night VFR rating are definitely on my list for 2009. We'll see how it all works out. The new job thankfully comes with a lot less overseas trips than the old one, so I won't spent a quarter of the year either away or jetlagged at home.


For someone who lives in the inner suburbs of Sydney, there’s unfortunately only one option: Bankstown airport. Sydney’s main airport is, well, the busiest in the country by far so you can forget about flying training or GA flying there. Camden sounds great but is too far for me and Hoxton Park just shut down. Which leaves us with Bankstown, about 45 minutes drive from where I live, and 35 minutes from work. Not too bad considering it used to take me about an hour to get to Redcliffe from my house in Brisbane.

Before leaving Brisbane I asked around for recommendations. Two instructors at my former aero club pointed me to the Schofields Flying Club. I also performed an exhaustive search of all the flying training organisations in Bankstown and came to the same conclusion: Schofields was the one for me.

It is the only organisation I found that seems to be a genuine flying club, as opposed to being a flying school with some social activities thrown in from time to time. I heard that Camden as a much better atmosphere than Bankstown, but it's just too far for me to drop in and have a chat or meet up with people, so that social aspect would be lost on me anyway.

So I went to Schofields on a Saturday afternoon, looked around the brand new clubhouse, sat inside a couple of their aircrafts, talked to a few people, and before I knew it I had applied for membership and booked a date with an instructor called Olivia for the next week-end for the obligatory club checkride. I chose a Piper Archer III, VH-SFR. I sat in the aircraft for a while to become familiar with where everything was and how everything looked and felt. I think I'm going to like it.


Schofields is mostly a Piper joint. Seven Warrior, four Archer, two Arrow and two Seminole. They also have a Duchess, a couple of Cessna 152 and even a 150 VH-JGJ, but that's about it for the non-Piper side of the world. I think I will miss flying the 172SP, but I'm also very much looking forward to learning to fly new types of airplanes, and forming my own opinion in the age-old debate of low wings vs high wings.


I think I'll need to hire VH-JGJ, the Cessna 150, and go for a local flight one day, just for fun. In the words of a former instructor of mine, going back to a 152 after flying larger airplanes "feels like driving a go-kart". At the other end of the range is this beautiful Piper Seminole below. It's pretty much a twin-engined version of the Piper Arrow. The club has both an Arrow III and Arrow IV. The Arrow IV, just like the Seminole, features a T-Tail. The T-tail does not require a separate endorsement, it just comes with the checkride for the type of aircraft.


I left the club and drove into Bankstown airport proper to have a look around. I noticed the Concept Aviation shop and walked in just to have a look. I bought the VTC chart for the Sydney area and a belated Christmas present to myself in the form of an Icon IC-R5 multi-band radio receiver. More on that later once I've finished exploring all the features.


In conclusion, my head is back in the clouds and for the foreseeable future my feet will be resting on rudder pedals very similar to the ones above.

Sunday, February 8, 2009

PPL Test Part 3: from Gayndah back to Redcliffe

This is the third and final post on my PPL checkride last November, previous posts can be found here and here. Promised, I will go back soon to posting photos.

Short field take-off at Gayndah, and soon after the examiner pulls the throttle back to idle for a simulated EFATO (Engine Failure After Take-Off). It is generally considered poor practice to shut the engine down for simulating an engine failure, so running on idle is the next best thing. According to someone who has been through a real EFATO, there is a lot more drag from the windmilling propeller, less responsive controls and strong pilot denial when it's for real.

You have to love aviation for always coming up with five-letter acronyms. EFATO is just like a FLWOP (Forced Landing WithOut Power), the difference being you have a lot less time to react due to the proximity of the ground and the lower airspeed on climbout than in cruise. As an added bonus, if you stress the middle syllable, EFATO almost sounds like an insult in Italian.

The procedure drilled into me throughout the whole PPL training comes out easily: carby heat on, mixture full rich, fuel on (except there's no carby heat on a fuel-injected engine), trim for best glide speed, select a field within 30 degrees ahead of us and glide in that direction. I point to the examiner the paddock where I would go, he's happy with the choice and thinks we would make it. He asks for a go around. Full throttle, right rudder and away we climb.

In the corner of my eye I can see the Big Orange. Believe it or not, there are actually four Big Oranges in Australia, all in different states. The one in Gayndah houses the tourist information office. Not to be confused with the Big Pineapple, which features on the Brisbane VTC chart just west of Maroochydore airport. If you haven't been to Australia you can't understand the thing with Big Things. So far I've been to the Big Banana, Big Lobster and the Big Rocking Horse. Hopefully one day I'll visit Tamworth and finally pay homage to The Big Golden Guitar.

From Gayndah I establish myself on track for the Maleny VOR and turn the nose a couple of degrees right of our south-easterly track in order to offset the southerly wind. The examiner announces that upon reaching a certain point on the track, I will have to perform a diversion. That point is when we cross the Widebay Highway, 45 nautical miles from Gayndah, which gives me some time to get prepared. And the diversion will be to Kilcoy, 50 nautical miles after the diversion. The examiner is kind enough to turn the autopilot on for me while I struggle with re-folding the map and measuring distances and headings with my protactor and ruler.

I make a call to Center to tell them that at 46 nautical miles on the 307 radial of the Maleny VOR I will divert to Kilcoy. The controller pulls out my flight plan and seems confused as to whether I'm on the leg from Maroochydore to Gayndah or Gayndah back to Redcliffe. We clear the confusion and our flight plan is confirmed as amended. A few minutes later I turn onto the new heading. Now comes the time for instrument flying,

The examiner has me put on the hood and I start about 20 minutes of instrument flying, maintaining an altitude and a heading. I know the heading is wrong, since the moment when one puts the hood on is usually when the examiner takes advantage of the temporary blindness of the person in the left seat to mess with the directional gyro and get them lost. Fair enough. I fly whatever heading I have to fly and when told come out from under the hood. The idea now is to find out where I am.

I proceed methodically. Write down the time. Slow the airplane down to 80 knots, lower a stage of flaps, choose an anchor point and orbit around it. Given the time spent under the hood and how much the DG was off the magnetic compass, I draw a circle around where I should, in all likelihood, be. To the West I can see a lake with a dam and I am very relieved to find a lake with a dam inside the circle on the map. That's Borumba Reservoir. The rest matches, i.e. roads and nearby town, so I declare us unlost and the examiner is happy.

We track south to Kilcoy where I expect another engine failure, this time in cruise. I get it after we clear the ranges coming from the north, and luckily enough I am within gliding range of the Kilcoy grass runway. I plan an approach in such a way as to fly two legs of the circuit, taking into account the strong westerly wind. Yes, the wind has changed direction, a sure sign we should hurry up back home. I am lined up on final with the grass strip, and the examiner agrees I would make it.

Around we go for a bit of low-level following the D'Aguilar Highway in the direction of the coast. What follows is a standard approach to Recliffe, staying under the CTA steps. Radio call to Caboolture then landing at Redcliffe. Still high and fast, damn, third time in one day... I taxi back, park the aircraft between the hangars. The examiner goes back in and I clean up the aircraft. So far so good. I feel very very tired, this was a 3.8 hour flight, i.e. 3 hours and 48 minutes. I call CENSAR and cancel my SARTIME.

We managed to beat the weather and perform all the planned test flight. But the oral theoretical exam is till waiting. I take a little break and join the examiner in a briefing room. He looks at the Knowledge Deficiency Report from the theoretical exam and asks me questions about hypoxia, stall speed and the oil system as I expected. No problem here. He makes me double-check in the CAO that the maximum altitude for flights without supplemental oxygen is 10,000ft. Then he asks me a trick question about minimum runway width at unlicensed aerodromes. It takes me a while to find the right answer but I make it. He smiles, tell me I passed and shakes my hand. There's quite a bit of paperwork left, but that's of course quite a pleasure.

I would love to say that I was overjoyed at getting the PPL, but that would be a lie. What I felt instead was immense relief, and also a sense of emptiness. Something was clearly over. I had been waiting for that moment for the last 18 months, and the journey had been just as nice as the destination. Now, what next?

I understood for the first time why some people quit flying after obtaining their PPL. Going from zero to being able to fly an airplane safely to any destination with passengers is a big personal achievement in itself. My theory is that many people think they learn flying because they enjoy flying in itself, while in fact what attracts them is eventually knowing that they are capable of flying an aircraft, which is an entirely different thing.

There's absolutely nothing wrong with that. And it is truly a massive personal achievement, no doubt. The closest thing I could compare it to is getting a PhD. You work hard on doing research for years, you get results, publications, write up a dissertation, the big day comes, and you finally get the degree. Only to realise this was only the first step in a lifelong pursuit of knowledge. Or the lifelong pursuit of tenure and research grants, but that's a different topic. Some people keep on doing research, others are just happy to have done it, get a regular, better paying job and maybe add "Dr" in front of their name on their credit card.

So that concludes the PPL chapter of this blog. Learning to fly was a very big part of my life for 18 months but not all my life. In the meantime I also managed to propose to the woman of my dreams, get married, obtain Permanent Residency in Australia, change jobs and change town. It's been a busy but very fulfilling time.

Thanks for reading that far. More adventures to come in the next months with learning to fly Pipers in Sydney, getting a retractable endorsement and possibly a night rating next Winter. And hopefully there'll be plenty of trips to remote landing strips or fly-ins to report on. Stay tuned!

Saturday, January 17, 2009

PPL Test Part 2: from Maroochydore to Gayndah

After taking-off on 18 at Maroochydore, I wrote down our departure time and made a right-hand turn onto the heading which, given the forecasted winds, would take us in a straight line to Gayndah, about 100 nautical miles to the north-west, on the second leg of the PPL in-flight test.

This leg was pure dead reckoning, so no use of radio-navigation aids or GPS. That’s a pity because Maroochydore has a VOR which I would have loved to use to establish myself on track. Instead I had to look over my shoulder to make sure the outbound track pointed somehow to the airport. I must have done a decent enough job because we soon had Mount Ninderry on our left and a few miles later we flew right over the top of Mount Eerwah, which matched the line I had drawn with a black pencil on my map. So far so good.

I was feeling pretty happy with myself at that stage. I knew from another student who was once failed by the same examiner that if he decided to fail me he would ask me to turn around and fly back home right away. Which meant I was still in the race. I mentally warned myself against relaxing and becoming complacent.

Another thing I knew was that the examiner does not normally fail you in the PPL test if you make a mistake, realise quickly this is a mistake and take the appropriate corrective action. This is the difference with the CPL test where everything needs to be done right the first time and every other time after that.

I called the tower to report clear of controlled airspace and they approved a change to the center frequency. The weather wasn’t too bad and I climbed to 4500ft. A Caribou military transport aircraft had departed Maroochydore right behind us and overtook us on the right on its way to Gympie. With a cruise speed of 160kt it’s not that much faster than our Cessna 172SP and its 115kt. But the comparison stops here. They have two engines and an MTOW over 14 tons, 40% of which can be cargo. Compare that with a single-engine, 1.3 ton MTOW and 4-seater-configuration-only-if-you-don’t-take-baggages-and-not-full-fuel for the 172.

I gave a call to the Gympie CTAF after receiving a friendly nudge from the examiner (“just as an information, there may be an aerodrome within 10 nautical miles”). We crossed the Wide Bay Highway later than I expected. This was our half-way point to Gayndah, so I revised my estimate accordingly. We crossed a few more ridges and valleys, some with roads in them, some not. Of course I couldn’t use the Gayndah NDB navaid. I kept aligning compass and DG, flying the heading, maintaining altitude and dutifully performing my CLEAROFF checks.

The examiner took a sandwich out of his flight bag and asked if it was OK if he ate it now. Sure I said. He unwrapped the homemade delicacy and the smell of egg started to fill the cabin. He finished the sandwich quickly, so I thought hey, at least the smell will go away now. Wrong. Even though the descent was well planned and the corresponding increase in pressure so gradual I never had to pop my ears once, the examiner managed to belch all the way down to ground level.

After clearing the last hill I could see Gayndah, Queensland’s Citrus Fruit capital. During flight planning at home I had realised on Google Earth that the airfield was in a bend of the river, with the bend pointing toward me and the town on my left. Thankfully everything turned out to be where it was supposed to be and I joined the circuit for YGAY, the unlicensed aerodrome of Gayndah with its 1265m long paved runway and elevation of 369ft.

The plan here was to perform a so-called precautionary search before landing, in this case simply overflying the runway at 200ft to check if it was suitable for landing, then do a normal circuit and land. My circuit join manoeuvre was acceptable. I ended up high and fast on final so had to use a lot of flaps to slow myself down for the overfly at 80kt and 200ft above ground. The runway looked in good condition with no obstacles on it or nearby so I went around and climbed back up to circuit height. That’s when I made a mistake that would have meant the end of the test had I been attempting the CPL test.

To understand the mistake, remember I did all my flying training at Redcliffe, elevation 7ft. With an altimeter set to read zero at sea level, there is no practical difference between the altitude over mean sea level (i.e with the altimeter set to the local QNH) and the altitude over the reference altitude of the aerodrome. 7 feet is less than the thickness of the altimeter needle.

Gayndah and its elevation of 369ft was a different story. Of course I knew that I had to join the circuit overhead at about 1900ft and that circuit altitude was about 1400ft. I even had all those numbers written on my knee board.

What happened was that I happily kept climbing above circuit altitude after my go-around. I realized I was doing something wrong when I found myself still climbing mid-downwind. The picture of the airport on my left hand-side was wrong too. I reacted quickly: chopped power down and pushed the nose down to recapture circuit altitude.

Of course by the time I levelled off at circuit height I was on late downwind and too fast, so once again I flew the entire base and final leg with the engine on idle and a fair amount of flaps down. What made matters even worse was that I was supposed to demonstrate a short field landing, which means a lower approach speed on short final. I all worked OK in the end, we landed ,taxied to the apron and shut down.

In stark contrast with the stench of the egg sandwich he had subjected me to while airborne, the instructor now commented on how the air on the ground was filled with the smell of citrus fruit blossom. Readers from the Northern Hemisphere, remember means October means the start of Spring in Australia. The air was still and warm but this is not always the case around here: I could see a piece of corrugated iron, probably torn off a nearby roof or shed, sitting high in the branches of a tall gum tree.

I wish I had pictures to illustrate this post, but I had made a conscious decision not to take my camera on that day, not wanting to give the “tourist” impression to the examiner. I got back into the airplane, re-folded my maps and prepared myself for the third and final leg of the PPL test.

So far so good I thought, but I came uncomfortably close to failing. On the menu for the next leg: engine failure after take-off, navaids work, instrument flying, lost procedure, diversion, forced landing without power, low level flying and a flapless landing at Redcliffe.

Friday, January 2, 2009

PPL Test Part 1: from Redcliffe to Maroochydore

So the big day of the final PPL test finally came to pass, 582 days after my first flying lesson. And it was a... success! I’m happy to report that I am now the proud holder of an Australian Private Pilot Licence for fixed-wing aeroplanes.

Sorry by the way for the delay in posting the news. I passed the test more than two months ago but have since been very busy with starting a new job and moving to a new city, which left no time for blogging, let alone flying.

A few days before the test, Rob, the CASA Testing Officer who would be conducting both the ground and air-based parts of the test, called to give me the itinerary I would fly on the day. It all sounded reasonably straightforward with three legs: from Redcliffe to Maroochydore, then to Gayndah and finally back to Redcliffe via the Maleny VOR navaid. The only bit of controlled airspace was around Maroochydore airport. Of course there would be diversions, lost procedures, simulated engine failure and system failures thrown in.

As usual, everything that could be planned beforehand was planned beforehand. Twice this time. I even spent a fair amount of time reading the WAC and VTC charts and making mental notes of ground features that I could use to get un-lost when Rob would get me lost. I double-checked all the figures, prepared the flight notification form and annotated my WAC chart with frequencies and half-way points. I read about the three topics on which I gave wrong answers on the theory test: hypoxia, effect of power on stall speed and oil system. And I showed up on time at 8AM.

I got the weather forecast and all the relevant NOTAMs. Nothing too flash. Acceptable in the morning, then getting increasingly worse in the afternoon with a TEMPO for thunderstorms at Brisbane airport, just around the time when we would be coming back to Redcliffe. I computed headings and fuel plan. Because of the probability of thunderstoms at Redcliffe on the way back I had to plan extra fuel for 60 minutes holding , which brought within a few litres of the legal limit, but on the right side of it.

I discussed the plan with Rob and he proposed to swap the in-flight and ground-based parts of the test so that we would do the flying first thing while the weather was still OK, then come back and go through the oral examination. I was happy with that, the last thing I wanted was to postpone the test, knowing it would probably mean a delay of a couple of months at least.

I pre-flighted and refuelled VH-SPP, a Cessna 172SP, then came back into the clubhouse for a pre-flight briefing. Rob explained what would happen on the flight. I would not use the Maroochydore VOR out of Maroochydore because that leg was about testing my dead reckoning navigation skills. At Gaydah I would do a short-field full-stop landing. After take-off there I’ll have a simulated engine failure. On the way to Maleny I will have to do a bit of instrument flying, then perform a diversion and a simulated forced landing. On the way back to Redcliffe there’ll be some low-level flying following the roads, and the landing at Redcliffe will be a flapless. I was surprised by how detailed the briefing was. I didn’t expect him to tell me when and where things would happen. It came as a bonus in a way.

We took off on 07 and tracked to Bribie Island via Beachmere in order to remain within gliding distance of the land. I re-captured my track at Godwin Beach and turned onto a direct heading to Moffat Head, the VFR reporting point for Maroochydore. I was nearly finished with the turn when I realised this was not going to work.

There was a forest fire on Bribie Island right where I wanted to go. The wind coming from the East was blowing the smoke plume to the west, so I dog-legged my way to the east of the fire. Rob sounded pleased with my decision. With the smoke now behind me, I didn’t bother trying to re-capture my track and tracked direct for Moffat Head, which was clearly visible from where I was.

I gave a call to the Caloundra CTAF, took down the ATIS for Maroochydore and made my inbound call to Maroochy Tower. I got cleared direct Maroochydore via Point Cartwright at 1000ft. Tower asked if I wouldn’t prefer runway 12 instead of 18 because of the smaller crosswind component. I decided for runway 18 because I felt quite confident in my ability to demonstrate a good crosswind landing, and I had landed on 18 twice in the last months, while my last time landing on 12 was more than six months ago, and not very good by any standards.

We were the only aircraft on the frequency, which probably explains why we got cleared to land as soon as I joined downwind. I turned base a bit too early, which got me high and fast for the turn to final since the easterly wind really shortened the base leg. I pulled power off, lowered full flaps and performed a decent landing despite a long float. A powered approach and less flaps would have been better though.

Once on the ground Rob asked if I would be OK with departing straight away or if I wanted a break. Clearly he wanted to get back as soon as possible to beat the bad weather. I thought about it for a half-second and opted for a five-minute break on the ground. I wanted the time to prepare for the next leg, re-fold my maps, have a quick bite at a cereal bar and something to drink. No-one can fail you for taking a break. But flying a leg with underoptimal cockpit organisation and low blood sugar level can lead to mistakes that you can be failed on.

So we re-started, taxied back to the holding point of runway 18, did the run-ups, and I called ready requesting an intersection departure. We got cleared to land with a right-hand turn and a climb to 2500ft. I made my departure report and reported again leaving controlled airspace. “Frequency change approved” came back and I switched to a listening watch on the center frequency for the long leg to Gayndah.

Saturday, October 18, 2008

Ten Tips for the PPL Theory Test

I'm happy to report that I passed the PPL Theory Test with 95% good answers. The threshold is 70%. Big self-indulgent pat on the back to me.

The exam contains about 40 multiple-choice questions. Most questions have 4 possible answers and some questions count double. It's the usual deal: one answer is ludicrously wrong and can be discarded straight away, another one can be discarded with a little bit of thinking and you're finally left with two possible answers to choose from. That's when you really need to switch your brain into gear.

Below are some tips that I hope will help others. Keep in mind that this is about the Australian PPL Theory Test. Things are probably different in other countries, although from what I gather multiple-choice questionnaires seem to be the norm. The main differences are with the aeronautical information and the textbooks. For example, the Australian ERSA corresponds to the American A/FD (Airport/Facility Directory) , CAR (Civil Aviation Regulations) are similar to the US FAR (Federal Aviation Regulations) and so on.

1. Book your exam well in advance
Don't do what I did. I procrastinated and booked late. The only date left was two days before my PPL in-flight pre-test, with only three seats left. Lucky I got in. Success was my only option.

Depending on which assessment center you go to, there may be multiple sessions per week or only one every month or even two months. Or you may be sick on the day. Or have a personal emergency. Remember that if you fail the exam there's a minimum amount of time before you can take the exam again, and it increases with your percentage of wrong answers. If you have more wrong answers than correct ones, you may have to wait 28 days.

The exams are delivered by a private company called ASL on behalf of CASA and one option is to book with them, which is what I did. Some flying schools and aero club allow you to sit the exam on their premises, which may be cheaper but not necessarilly more convenient since you'll need to find an instructor who is allowed by CASA to invigilate the exam (not all of them can).

Just like when flying cross-country, make sure you're not caught out with no options.

2. Study as if you're instructing
If you've ever had the chance to teach in a formal setting, be it a classroom or a university lecture theater, you will have realized that you never really know a topic unless you're able to teach it and answer questions from students.

Apply the same techniques to studying PPL theory. Picture yourself explaining the different types of carb icing, or cloud types, or navigation techniques, to someone else and imagine that person asking you hard questions about it. Better still, find an actual person to bounce your knowledge (or lack thereof) off. This could be a friend, a work colleague with an interest for aviation or an understanding family member. Or team up with other PPL students in a study group. If you have a blog, blog about it. Even airline captains do it.

Diagrams are especially tricky. Sure, you can follow the oil system diagram and explain what each component does, but would you be able to draw it unaided on a blank piece of paper? If you can, you really know your stuff. If you don't, more studying won't hurt.

Remember, this is not only about passing the PPL theory test, it's also about acquiring knowledge that will hopefully stay with you for your whole life as a pilot. And who knows, it might even save your life one day.

3. Show up early (and with your logbook)
Allow yourself plenty of time to get to the examination center. This way you can get familiar with the location, find where the bathroom is, drink and eat before the exam, nicely organise your material on the table and relax before the exam starts. The last thing you want is pull into the parking lot downstairs two minutes before, run up the stairs and drop your stuff on the table with your hearth still racing and sweat across your face. Only to realise you left your wallet in the car and your flight computer fell off the bag on your way up.

It is also mandatory that you show your logbook on the day of the exam so that the examiner can check you passed the BAK (Basic Aeronautical Knowledge) exam. That requirement is written multiple times in documents you'll get from ASL. If you don't have your logbook, you won't be allowed to sit the exam, will loose your money and will need to rebook for a later date. Don't let that happen to you. I know one person it happened to.

4. Read the bloody question
More. Than. Once. Understand what the question actually says, not what you would like it to say. It's way too easy to fool yourself into thinking a question matches an answer you already know, or a question you've seen in a practice exam.

Negations, for example, can be easily overlooked if reading in a hurry: there's a difference between "which of the following animals is a bird" and "which of the following animals is not a bird".

Watch out for qualifiers such as "most likely". This is an indication that, although more than one answer are formally acceptable, one is definitely more acceptable than the others and is the only right answer to the question. To a question such as "which animal is most likely to stomp on your roof in Brisbane at night" the correct answer would be "a bloody possum".

There are no "trick" questions. If you've studied well and read the questions carefully you will pass. Studying "well" is different from studying "a lot" though. Which brings us to the next point.

5. Do plenty of practice exams.
OK, that's an easy one. Of course you'll practice beforehand, right? CASA even released a set of sample exam questions a few years ago. You won't find the exact same questions at the exam obviously, but they're very close in spirit.

PPL textbooks also have their own sets of practice exams. I practiced with Bob Tait's PPL and CPL books and it's very good training. My suspicion is that CASA contracted Bob to write some of the PPL exam questions :-)

Practice in exam conditions: time yourself and only use the documentation you will have at the exam. No cheating. Identify the questions you got wrong and also the ones you got right only by chance. This will give you a list of topics you need to study again. Only redo the practice exam after you've studied and understood the topics you got wrong.

6. Practice PPL exam at CPL level
That's less crazy than you might think but only applies if you plan to move on to CPL later because the cost of buying the seven CPL theory books is rather prohibitive ($341 new for Bob Tait's collection). If you can get your hands on pre-loved or someone else's books of course go for it. Check they're not too old though.

The idea is as follows: when you look at CPL books you realise that a large portion of the material is already covered in the PPL books. In the case of Bob Tait's series of books, some sections of the CPL books (particularly Meteorology) are an exact copy and paste of the PPL book. That's fair enough, a cloud is a cloud, there's no PPL clouds and CPL clouds. By practicing at CPL level, you build up extra knowledge and confidence that will help you achieve a good mark at the PPL exam, and get you ready for the CPL exam later. Double whammy.

Now, here's the caveat: this works well for General Knowledge, Meteorology, Navigation, Human Performance & Limitations and Aerodynamics. I would not recommend it for the two topics of Air Law and Performance since these are very different at PPL and CPL level.

7. Know the VFR Flight Guide inside-out
The exam is open book as long as the book you bring are on the approved list of aeronautical documentation: CAO, CAR, ERSA, AIP, VFG, etc. You cannot bring the textbooks obviously.

Now here's my experience: don't bother at all with CAO, CAR and AIP. They're big, heavy, expensive, and if you don't know where to look you won't find what you need, or will waste time finding it. Every question about regulations that I came across in the PPL exam could be answered straight out of the VFR Flight Guide (VFG). And when you think about it, that's what the VFG is about: extract all the aeronautical information relevant to VFR pilots and present it in a form that's easy to consume. Don't forget you can use the index at the back of the book too.

Of course you'll also need the ERSA, but you'll most likely already have one forthe navigation part of the PPL curriculum. Make sure it's current since some questions require looking up specific information about aerodromes or navaids that may change from one issue to the next.

8. Double-check every single answer
An obvious one again. What I did was keep a separate sheet of paper on which, for each question, I wrote down how I came to the answer. If the question required, say, a weight and balance calculation I would write down the entire calculation. If is was about regulations or facilities, I would write the page number in VFG or ERSA where I found the answer. Do that even for answers you are absolutely sure about.

After you've answered all questions, go through the list, re-check every single answer and double-check you didn't make any stupid mistake such as clicking the wrong answer or answering question 34 using the multiple choices of question 35. I did that and found one such mistake.

9. Stay hydrated and well-fed
The exam is three and a half hours long. Think about it as a long flight in an airplane with toilets. Don't let yourself get dehydrated or your blood sugar level fall too low, this will impair your ability to think. Don't let your bladder distract you either, pee breaks are allowed. Bring a bottle of water or energy drink and cereal bars. Take a short break when needed, have a sip and a bite to eat. 210 minutes is plenty of time for answering, double-checking and triple-checking all questions if you know your stuff. No need to rush.

As a matter of fact, students on average complete the exam in 165 minutes, which is about the amount of time it took me. Then you click the final button and wait for what seems like a long long time for the result to come back. Shane described it a lot better than I could.

10. Aim for a very high mark
The pass threshold if 70%. But you should aim much higher. Why? After you've submitted your answers the examiner will hand you a certificate saying that you passed as well as the somber-sounding Knowledge Deficiency Report (KDR). The KDR lists the sections of the PPL Syllabus curriculum that match answers you got wrong.

Kindly enough CASA on their website list the areas where students fail most often:
  • Effect of lowering flaps on performance of glide or descent.
  • Factors affecting the angle of climb.
  • Calculation of beginning and end of daylight
On the day of your final PPL test, you will have an oral examination as well as a flight test. In the oral examination the examiner will quiz you on every topic you got wrong at the theory test to make sure you've fixed your knowledge deficiencies. A high mark at the theory exam will keep the oral examination short and ensure you give a good first impression to the examiner. This is the difference between the examiner thinking this guy sounds fairly switched on and motivated and Oh God, here we go again.

That's it, I hope it helps. If you have questions just leave a comment below. Remember, by law I cannot reveal which questions I had at the exam, so don't ask. Anyway, if you've found this blog post and read that far you're probably very motivated and I'm sure you'll pass first time. Good luck!

Thursday, October 9, 2008

God's Acre at Archerfield Airport

At the main entrance of Archerfield Airport in Brisbane is a small peculiar graveyard called God's Acre. It is located on the airport grounds, right in-between the road and the greasy spoon eatery favored by local pilots for lack of any other option. And as Aviatrix remarked when describing a similar place in the US, this is not an airport with its own graveyard, but rather a graveyard with its own airport.


It would be easy to believe that this cemetery is the resting place of pilots and passengers involved in fatal accidents flying in or out of Archerfield. The dates however tell a different story. The cemetery was consecrated in 1859 with the burial of Volney Grenier who fell from a horse at the age of 16 while fox hunting on a nearby farm. Archerfield Airport opened 70 years later in 1929.

To put things in an Australian perspective, Australia was only "discovered" by Captain Cook in 1770, with the first settlement established in 1788.

A well-documented history of Archerfield airport tells us that the US 5th Air Force upgraded and used Archerfield aerodrome during WWII, most notably as a base for B17 Flying Fortress heavy bombers. The airfield received the visit of General MacArthur, whose wartime headquarters were in Brisbane, as well as Eleanor Roosevelt, wife of the then President of the United States.



There is however one aviation-related plaque in the cemetery. It is dedicated to the memory of Robert Copas and Lace Maxwell, who died in a flying accident in 1994. The airplane involved in the accident, a Tiger Moth VH-UNA, was based at Archerfield.


According to the ATSB report, the accident happened while performing a wing-walking stunt at the Luskintyre airfield in the Hunter Valley in NSW.

Because of the extra drag caused by the wing-walking frame bolted onto the wings, the pilot had developed a take-off technique that would give him a decent climb rate despite the added drag. Unfortunately, this involved climbing at a speed very close to the stalling speed of the aircraft.

According to the investigation report, the engine failed soon after take-off because of a problem with the carburetor needle. The problem had already been identified on similar airplanes in other countries, but had not resulted in an Airworthiness Directive in Australia. The pilot tried to perform a flat turn to get back to the runway by kicking the rudder. This resulted in a stall and spin which killed both occupants.

I wonder how many of the local pilots take the time to visit this place. It really is less than a couple hundred meters from many of the local flying training organisations. I'm glad I did.

Monday, October 6, 2008

Nav7: Back to Redcliffe

Before starting up in Goondiwindi for the last leg of Nav7 I didn't forget to turn the GPS logger back on, so this post will be illustrated with the actual track I flew. Hopefully this will compensate for the lack of photos. GPS tracking is the aviation equivalent of reality TV: no details will be spared, and all embarassing navigation mistakes will be exposed.


The plan was to fly from Goondiwindi (YGDI) back to Redcliffe (YRED) via Millmerran (YMMN), Toowoomba (YTWB) and the township of Esk. As can be seen below, I departed Goondiwindi on runway 22, flew a short crosswind leg, turned downwind and kept climbing for an overhead departure.


I could have made my life simpler by departing on downwind rather than overhead since my outbound track was nearly parallel to the downwind leg. Another thing I could have done better would have been to make sure the extended outbound track pointed at the airfield instead of being about one mile to the north of it.

I kept climbing to 5500ft while maintaining a heading of 033 degrees to Millmerran. The track to Millmerran as drawn on the map was actually 041, but given the forecasted westerly winds at 25 knots I had computed before the flight that the nose of the airplane had to be pointed 8 degrees left of track to compensate for the expected drift. The idea was to keep flying the planned heading and check later if I was where I expected to be or if any adjustements had to be made. In a nutshell, that's the navigation technique known as dead reckoning.

About two thirds of the way to Millmerran I could see on the left-hand side a power line oriented north-south crossing a road oriented south-west north-east. From the WAC chart I could easily tell where I was, which was good, except this was not where I was supposed to be!

I was actually about 5 miles north of the track. I had already flown 45 miles from Goondiwindi, with 20 more to go before Millmerran. Maybe the wind was not as strong as forecasted or had assumed a different direction, resulting in my heading over-correcting the expected drift and taking me further to the left of track. Or maybe I misaligned the compass and the DG. Finding why it happened was anyway secondary to fixing the problem.


That's when the navigation technique known as one-in-sixty comes in handy. It is based on the fact that being off track by 1 mile after 60 miles flown means an angular error of 1 degree. 2 miles after 60 miles mean 2 degrees, and so on. It works great, at least for small angles. From a mathematical point of view, this relies on the fact that the function tan(x) can be approximated as x for small values of x. But let's not complicate things, since the beauty of the method is that it can be done in the cockpit while flying.

It goes a little bit like this: I am off track by about 5 miles after about 45 miles flown. Let's say 50 instead of 45 because it makes calculations easier. 5 in 50 is like 6 in 60. So I was over-correcting drift by 6 degrees. If I turn right 6 degrees now, I will fly parallel to my intended track. However, if I do that I will still be 5 miles off-track. So I need another one-in-sixty calculation to determine the closing angle that will take me straight to my destination. I still have 20 miles to run till Millmerran, 5 in 20 is like 15 in 60, so if I add an extra 15 degrees to the 6 degrees found previously, this means I need to turn right 21 degrees to be on a track to Millmerran. New heading is therefore 012.

And it works, as can be seen in the picture above: after turning onto the new heading my new track was pointing at Millmerran. Near Millmerran I went a bit right of track in order to keep the aerodrome on my left, simply out of curiosity. Then I turned onto a new heading and tracked for the Toowoomba aerodrome. I used the drift correction from the one-in-sixty exercise conducted a few minutes before to compute a new heading.

I picked up the ATIS for Oakey on their VOR frequency. The sequence letter for the information was Zulu, meaning the military control zone was not active and had reverted to a CTAF. My track only clipped the CTR by a mile or so, but I would nevertheless have needed to request a clearance if it had been active. No need to upset the military. I prefer to see fighter jets and big black helicopters at airshows rather than at the end of my left wingtip.

Toowoomba is blessed with an NDB navaid, so I tuned it in and the needle on the ADF was pointing straight ahead. The ADF needle points at the navaid in relation to the airframe, not in relation to the track as is the case with VOR navaids, so one has to take drift into account. However, since I was no longer offsetting a lot of drift, the nose of the airplane was pretty much pointing where the airplane was going, and therefore the needle pointing straight ahead was good news.

I made a couple of calls on the Toowoomba CTAF to let everyone know I was intending to overfly the field at 5500ft. At this altitude I couldn't really have conflicted with traffic in the circuit, but it's good practice. The GPS logger can be cold and cruel at times, pointing mistakes that would otherwise go unnoticed, but in the present case I'm happy to report that my track took me right overhead the airfield.


After Toowoomba I tracked for Esk. Under my left wing were the Cressbrook and Perseverance Creek reservoirs that I had overflown on Nav3 six months ago on my way to Oakey. The hilly scenery was really beautiful in the low light near the end of this winter afternoon. I found Esk and confirmed it with Mount Esk, the racetrack and the red rooves of the Esk Hospital. I descended to 3500ft and once clear of the ranges kept descending to 1500ft to remain under the CTA steps of Brisbane International. 

The GPS logger got its revenge when I joined the circuit at Redcliffe. I was coming in from the west at 1500ft and my track was taking me straight to the airfield. I turned right a little so as to be on the south side of the extended centerline for runway 07/25.

The dead side at Redcliffe is always to the south because all circuits are over the water, i.e. left-hand circuits for 07 and right-hand circuits for 25. That's both for reasons of not overflying populated areas, and avoiding any controlled airspace violation. The Brisbane CTA step over the Redcliffe aerodrome is at 1500ft, and there's a 1000ft step just a couple of miles south of the field.

I knew from listening to the CTAF frequency that runway 07 was in use, which I confirmed by looking at the windsock as I was descending to circuit height over the dead side. The winds had changed since earlier in the day when I took off on 25.

I joined crosswind above the opposite end of the runway. I turned downwind a bit too early so I widened the leg a bit. This is why the track does not look anything like the nice figures in flying training books. I landed on 07, taxied out and refuelled the airplane. I cancelled SARTIME by phone then sat down a few minutes to jot down some notes about the flight so that I could blog about it later. Total flying time today 4.3 hours, at $185 an hour plus $29 for landing at Archerfield. Oops. Looking forward to being able to take passengers with me to share the cost.

So that's it. The navigation part of the PPL is now over. It's a bit of a weird feeling. Next step, PPL pre-test and then test. And hopefully many more adventures after that. And I need to blog about the CSU endorsement. And the PPL theory test. And the airshow in Singapore. And write a guest post for Plastic Pilot. Too many blog topics, not enough time.