Crosswind Circuits and Navigation Exam

This weekend I was at the club both Saturday and Sunday, Saturday was to take my navigation exam and Sunday was my lesson.

Saturday

The navigation exam for me was the most difficult of all the exams, you also get the longest time to complete the 20 questions and for the first time I used it all!

I should not have been surprised at finding it difficult as I had done the least revision for this exam, as I was unsure what to revise as the Microlight hand book is a bit light on the subject of navigation. Well it was a struggle and I came out certain that I had failed, however Mike returned with the news that I had passed, but only just which was disappointing in some way and a great relief in other ways.

For some reason my mind went blank in the exam, I could not remember how to use my whiz wheel or at least the answers it was giving me was directly between 2 possible answers on the sheet. I decided to draw the triangle out and again I was unsure as my result was not listed, this would not have been a problem if it was close to only one answer, but it wasn’t. In hindsight I was not really ready for this exam, plus I also had other things on my mind which did not help. Oh well a pass is a pass and I can now concentrate on the flying!

I would just like to say that I think taking this exam last is a good idea, as a couple of the answers to questions came from other chapters in the book. Also within the book it does say to get familiar with reading the charts and locating place on them, this is something well worth practicing before sitting the exam, it would have saved me some time that I could have put to good use on other answers.

Sunday

Crosswind circuits and landings were the order of the day thanks to weather! Well I guess I had to do them at some point so probably just as well. Today’s runway was 19 and we taxied out around all the mud and little lakes that have appeared and lined up on 19. I think taking off is one of my favourite bits, full power hurtling down the runway, immediately followed by gently and serenely climbing skyward over the countryside. Most of my circuits have be flown from runway 24 so Mike showed me the circuit and I took over for the landing which was OK, not great but OK, having to “de crab” just before touchdown was a new thing for me and something else to try and coordinate. De crabbing is the term used when you come in to land slightly sideward to allow for the crosswind and then before landing you need to straighten up in line with the runway so you land with the wheels pointing in the correct direction. As the lesson progressed I was getting better so we decided to continue the lesson with full flap landings and these were not too bad either, my last land was the best of the day and Mike commented “that was not bad at all” and “a good one to finish on”. So maybe I’m finally getting my eye in on the landings, time will tell!

On returning to the clubhouse there was a lovely cup of tea waiting for Mike and I made by Katie, it’s one of the things I like about the club is how friendly it is, everyone talks and makes tea, I’m glad I chose this club to learn to fly with and hope to continue to fly here once I have my licence.

Navigation master class

Saturday the 4th Jan 2014 the first flight of the New Year; Earlier in the day Mike had called to say the weather did not look promising at Chatteris, but in the hope things had got better, as they were not too bad where I live, I decided to go anyway, if nothing else it would get me out of the house for a little bit and there is always a warm welcome and cup of tea or two at the club.

On arriving the weather look flyable to the west, but a bit suspect to the east and the hanger was all but closed, I assumed no flying today! However Mike said we could start on my navigation with a short cross country and gave me the route to plan while he went to get the aeroplane out of the hanger. A little while later another student arrived to take his Navigation exam and Mike returned with the news that the weather was deteriorating so no flying after all. But all was not lost as Mike gave Stuart and I a master class on navigation for a couple of hours and then Stuart took the exam and duly passed (well done Stuart if you happen to be reading this). While Stuart was sitting his exam Mike went through the triangle of velocity,  route planning and use of the whiz wheel with me, also more tea was drunk!

Katie made me feel my age when she asked “what’s a slide rule”, yes I’m that old that we had them (just) while I was at school and trying to explain how great they are to someone that has never used one is a challenge in todays world. I also had a flight calculator in my bag of bit I had got off of eBay and Mike was going to show me how to use that also, however the batteries had gone in it and thats why the circular slide rule aka whiz wheel is better!

So although not the day I had hoped for and I didn’t get to fly, we did have a really good and informative session on Navigation, I might even have a go at my Nav exam sooner than I was expecting!

Flap less takeoffs and landings

Today’s lesson was landing and taking off without flaps due to the high wind, we also looked at the effects of adding power while the aeroplane is stalled.

I must admit I thought today was going to be lost to the weather like last week, oh the joy of flying Microlights in the English winter, at least the C42 has a good heater! I got to the club very early with the thought of flying earlier or if it was calmer there may be having a double lesson, as the lesson before had been cancelled, however when I arrived it was very windy and the weather was deteriorating, Pat and Colin were holding short for runway 24 and Mike was on final with another student. Mike and the student landed and Pat and Colin thought better of flying with the weather closing in and all came back to the club house.

Alan had come in to fill the now vacant 12:00 slot and I had decided to have a go at the aircraft General (aka aircraft technical) exam. Mike led me through to the office and gave me his pre exam talk which points out things like; ensure you think about what the correct answer is before looking at the answers, read all the answers and only then select the most correct answer… Well I was not 100% sure I was ready for this exam as I had not made a full set of revision notes and still had a few questions, these were mainly due to the free practice sites answers conflicting with what’s in the book! But it was too late now I was sat at the desk with the exam paper in front of me and the clock was ticking! The next shock was there were 50 questions; the other exams had been 10 or 20 questions. There was also a calculator provided, but it did not have SIN, COS or TAN on it, how would I work out the heights and distances? I was really beginning to think this was a mistake to take this exam today, it could ruin my Christmas if I fail, this sort of thing plays on my mind. Well at least one of the conflicting answers came up in the exam and I went with what I had read in the Microlight handbook and it was later marked correct. At just under half the allotted time I was done and there had been no need to use the calculator. I went out of the office just as people were getting ready to fly as the bad weather had blown through and conditions were ok. Mike marked the paper and I had only got a couple of the questions wrong, one was a common sense question which if I have thought about it in the context of a Microlight I should have got right and the other I believe was not covered in the book! but this was a respectable pass mark and I was happy at the out come.

At around 13:00 Pat and Mick and Colin and Katie went flying, I checked out the C42 ready for my lesson and noticed a piece of black insulation tape on the cowling, before I went flying I ask Mike what the tape was for, Mike replied “it’s a gun sight!”  He then went on to explain it makes it clear to students what part of the aircraft should be used as a reference for them to line up with.

We taxied out to runway 24 after completing all the pre flight checks, Mike explained with the strong headwind we would not be using flaps, this was to allow us two climate a better angle so if you were to encounter an engine failure we would not have so far to get the nose down and with the high head wind we may exceed the “white arc” (indicated airspeed allowed for flaps) before reaching 200 feet.  We commenced our take-off using a shallow climb to gain airspeed before adopting the normal angle of climb, we continue to climb to 4000 feet.  Mike took control and demonstrated a stall as we have done in an earlier lesson, he then repeated this, but instead of recovering by lowering the angle of attack he applied full power, the nose of the aircraft raised and it appear as if we had recovered, however glancing at the vertical airspeed indicator it was clear we were losing altitude rapidly, Mike reduce the angle of attack by lowering the nose and the aeroplane recovered from the stall. A clear example of why adding power doesn’t recover you from a stall.

One of my biggest concerns about learning to fly is knowing where I am in relation to the airfield at any given time; after the stalling exercise Mike says “head back to the airfield and joined the circuit”, harder than it sounds when you haven’t a clue as to where you are or more to the point where the airfield is! After some time I spotted in the middle distance a small town, as we got a bit near it turned out to be the city of Ely, the perception of places from the air is quite different, well for me at least. From here I worked out where I was and got us back to the airfield. I flew a few circuits and made some good approaches and a few good round outs and hold offs, but unfortunately the two did not coincide!

Once back on the ground Mike said well done and that in calmer conditions I will find it all much easier and should be able to put it all together.

So ends my last flying lesson of 2013, all that remains is to wish anyone reading this blog a happy Christmas and New Year.

Circuit Training with a twist – Engine Failure on take-off

Today (8th December 2013) like the last few weeks was more circuit training, the conditions were a little bit windy to the point that the parachute club next door were not operating, but that didn’t stop us!

Today’s runway is 24*.  I could describe the circuit, but I have done that a few time in other posts, so what was different today well not too much to be honest, I still seem to get the height above the runway wrong on occasions and don’t normally pull the stick far enough back on the flare, but the news here is that we may have found out why! I tend to fly with my arm on the armrest, which seems to limit the movement of the stick as I’m using my wrist to move it and not my arm (too many hours spent on the Xbox 360), Mike spotted this and the last two landings were better so we will see next week if this is the key to my issue.

The twist this week is Mike took over on a climb out at just over 200ft and showed me what to do if we have an engine failure on take-off. We had also discussed this in the pre-flight briefing, you must get the nose down explained Mike and select a landing spot ahead of you, don’t try and go around and land back on the airfield you won’t make it, he adds.

We continued flying circuits and after another couple we are claiming out and Mike says engine failure and takes the power back to idle!  I impressed myself! Nose down selected a field to land in had time to put a stage of flap on and flew the best approach of the day right down to the field and then, just before touch down, full power and around we go. I guess it’s best for the farmer’s field and the aeroplane that we don’t actually put it down in the field if we don’t need to.

On the last circuit Mike says ok this time let’s make it a full flap landing and I make probable the best landing of my lesson.

I still find it very infuriating that at best I’m inconsistent, why is this part so damn hard? I likened it to when I was a martial artist, progression through to brown belt was quick, but the level of detail and consistency need to go from brown to black is a marked step change and that took me a while too, so maybe there is hope and maybe there is now a dim light shining at the end of my current tunnel!

How did you fined learning to land, easy, or is your experience similar to mine, I would love to know so why not add a comment below?

I rounded off the day by taking my Human Performance and limitations exam, which I’m glad to say is a lot easier than learning to land, I passed this leaving only the Navigation and Aeroplane technical exams to do, which I will probably leave until the New Year.

As I was leaving for the day I looked back and saw this lovely view view.

Sunset at Chatteris Airfield

* Runway numbering, as a passenger on a commercial airliner I had always wondered why an airport with 1 or 2 runways number them 27, 24, 03 etc. well since I started to learn to fly that is now obvious to me and it turns out to be quite sensible too! The runway number is the first 2 digits of the heading the runway aligns to. So if you are on the center line and lined up straight down the middle of runway 24 the compass will read 240 degrees.

BMAA Flying Show 2013

My first visit to the “Flying Show”

Simon and I decided to visit the flying show on Saturday 30 November 2013, we are both relatively new to microlighting and thought this would be a good way to get a broader view of the sport and a fun day out.

We drove up to the NEC and packed in the car park signed for the show, a tip for future years would be to park in the Birmingham international train station car park, as it is half the price and short covered walk to the NEC! Car parking at the NEC was £10 per car per day.

We didn’t know what to expect from the show, not having been before, but had been told in previous years it have not filled the hall, this year and possible previous years, it was in hall 12 and it pretty much filled the hall to capacity.

Overall we enjoyed the show with its display of light and Microlight aeroplanes a few gliders, quite a few flex wing and a health number of impressive looking gyrocopters. Also in there were displays of radio controlled aeroplanes and helicopters both static and flying, a racing car and GoCycle with a short test track!

I was looking to buy a couple of things from the show but ended up buying just a chart, from what we could see from the Flight Store, AFE and Pooleys stands the only saving to be had was on the postage, I had hoped for a bit of a deal! Maybe there was on some of the items, but not the things we were looking at. If you were joining the BMAA they were offering a good £10 discount for people signing up on the day, it would be good to have some more show only deals.

There was a lot to see and do and we enjoyed chatting to various people and looking over the aeroplanes on display, however we were both a bit disappointed in the number of different fix wing Microlights on display, there was a few, but we would have like to have seen more manufactures displaying their planes at the show so future (hopefully future!) pilots like us could get a better idea of what we might want buy once qualified.

Will we return next year, possibly, I’m undecided at this point in time, for me if there was an increase in the fixed wing microlight displays, preferably by the manufactures, then I think I would certainly go again.

Below is a gallery of pictures from the show for you to browse.

Meteorology Exam

Today 1st December 2013 would have been a lovely day to have gone flying, just look at the blue skies in the photos! However I was visiting the flying club not to fly, but to take my meteorology (NPPL(M)) exam. Simon who was with me went flying, I remember thinking lucky guy to be flying on such a nice day.

I took my camera and my revision notes with me today, so I have some more nice pictures to share with you all (assuming someone is reading this and that I’m not just writing it for myself!!!).

So shortly after arriving Mark (Mike’s son and a fellow student) and Mike landed and it was soon time for Simon to have his lesson with Mike, before reaching for the skies Mike took Simon through the lesson they would be doing today, this was “straight and level” and “Stall awareness”. After the briefing Simon went out and checked the aeroplane over ready for flight and Mike turned his attention to me asking if I was ready for the exam, I hoped I was, but I was a lot less confident with this exam.

For the air law exam I had made around 4 pages of revision notes and a set of flash cards to teach me the signs, I will get around to writing these up in the hope they may help someone else at some point, however for this exam I had made 14 pages of notes and was still picking up things as I talked to Mike. Anyway Mike and Simon left and I went out to take a few pictures of them flying out. 

 

I also took a few of the Parachute club people who operate out of Chatteris next to us. Katie and Pat went up in Pat’s C42 also. I was chatting to Andre and his friend about the exam. I had not met them before but like everyone at the club I have met thus far they seemed like nice people.

I sat down and read through my notes and suddenly found myself doubting my readiness for what many say is the hardest of the written exams.

It was not long before Pat and Katie were back and the kettle was on!

A little while later Alan arrived for his lesson with Katie, Alan’s wife bakes some exceedingly good cakes and pies and Alan is kind enough to share them with us. Alan also runs a website You Garden which you should check out for some good deals.

Katie started to brief Alan on his lesson, which today would be stalling and the recovery from stalls; this lesson when I did it reminded me a little of being on a roller-coaster just as you go over the top of a drop, luckily Alan commented that he liked roller-coasters! With Mike and Simon now back Katie and Alan took their turn to go up.

Mike asked me to explain a number of meteorology things which I did, some correctly and others not so well! Anyway I decided to give it a go. Unlike the first exam it consisted of 25 not 20 questions, it still has a pass mark of 70%. So name, date and signature on the paper, I was committed to taking the exam, this paper allows you an hour to complete it, but after 20 mins I was done. I spent another 10 mins looking over my answers, there was 4 I was not too sure on, but I decided not to change them, as it turned out I should have changed 3 of them! I came out of the office and told Mike I was done. I was very apprehensive this time as I was not sure if I had done enough. Mike marked the paper and much to my relief I passed with a reasonable mark, just 2% less then what I got on my last exam.

Like with the Air law exam I’m not going recount any of the questions, but I cannot remember any that are not directly or indirectly covered in the “Microlight Hand Book”.

Circuit Training Continues

Well not long back from another lesson (24 November 2013), and a little disappointed in my performance today, Mike said I was improving it was just that he had increased the ante a little, I’m not so sure!

So this is how it played out; on arriving at the airfield around 30 mins before my lesson I see the training C42 just going up and I notice the windsock and remember thinking the weather seems calmer than forecast. I parked up and walk over to the clubhouse, as I pass the hanger I see Mike showing a new person around one of the Microlights, he explains that they are running a bit late due to the weather. On into the clubhouse and I make a cup of tea for myself and a couple of the others. Stuart (another student who is further in his training then I), Mick and Pat (both own C42s and have their licence) are discussing the runways at Boston airfield as Stuart had just returned from a cross country to there. I produced a packet of Jaffa cakes and offer them around, after we all had some, someone commented “it’s a good job Katie is flying else there would be none left!” I can’t remember who made the comment, or maybe I can, but don’t want to drop them in it!

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My turn to go up comes, I go out and pre-flight the aeroplane and it starts to drizzle, I know its drizzle as I have been reading up for the met exam and now know the definition! Luckily it stops and we can go up. I’m thinking we will be using the nice big and wide runway 01 perfect for me to practice my landings on especially with the cross wind and all, but no Mike has other plans, we would be using runway 03 which is a lot narrower and therefore more challenging to a student pilot!

We taxi out and go up, runway 03 has some trees a little beyond the end of it, so you start by racing toward these and then up you go and soar high above them. Around the circuit we fly, downwind checks done and downwind call done, turn on to base leg and we fly at 90 degrees to the runway, but pointing a little to the left to allow for the drift caused by the wind, power off, flaps down one notch and turn on to final, not to bad a landing a little heavy because yet again I don’t pull back enough on the stick, it’s like my brain is saying I know what you want to do, but then ignores me and instead just wants to get the aeroplane on to the ground and thus I stop bringing the stick back.

Power on and around we go, the next attempted is a little better, but not much, third attempt and the approach is much better, but somehow I decide the altitude of the runway has changed by about 10ft and I round out to high! Power on and around we go, Mike takes control and fly’s a tight circuit and brings us swiftly into the landing to re demonstrate the attitude I need to attain before we touchdown which is much higher than I have been using, power on and around we go again.

This time all is looking good and the landing is a lot lighter, have I finally cracked it? Power on and around we go again. Mike says this is the last circuit of the day as the light is going and I’m out of time, my reply is “ok I had better make it a good one then”, however Mike throws a curved ball and says ok, but this time we are going to be landing with full flaps and tells me what to expect and to keep some power on to counter the extra drag from the flaps. In I come, approach looks good flaps from stage one to two, power on a little, nose down, all at once and watch the speed, with full flaps we are looking for 55 knots and not the normal 60 knots. Down we come and once more I fail to get the stick fully back before touch down resulting in yet another heavy landing, not a good way to finish the day I think to myself. We taxi back and Mike debriefs me and says I did well! I had not felt that I had, but as he said the conditions were more difficult and he had us using a narrower runway, he says my approaches were more consistent too. I take some consolation from this, but I still feel disappointed in my performance.

Back in the clubhouse Katie had made Mike and I a cup of tea, which was very nice of her, we discussed how I did and she said she had noticed a few heavy landings. I asked about my next exam which is meteorology, it had been on my mind as I had read the relevant section in the Cosgrove book and still had no idea what to expect. Katie kindly asked me a few questions and explained some of the items to me which hopefully will allow it to make more sense on the next read through.

And so ends another lesson, but with me feeling not as upbeat as normal.

Next week I’m at the Flying Show NEC 2013  with a friend and fellow student Simon, I intend to take a few photos and write a review of the show or at least some of the things at the show.

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Circuit Training

16th November 2013, Today’s lesson we continued to fly the circuit as per the previous few lessons, however due to the wind direction we were using runway 24 for the first time in my circuit training. There was very little wind which is a help while learning how to land, as it’s one thing less to think about and correct for. I taxied out and lined up on the runway, Mike explained that I would do the take-off and he would take over after flaps up (200ft) and show me the turning points.

I started my roll as normal and took to the sky with my normal slight wandering right and then left where I don’t put in enough rudder to compensate for the thrust and then end up putting in too much. We climbed up to 200ft where I put the flaps up; Mike took over the controls and flew the circuit pointing out the turning points for the given conditions and as normal the fact that we want to be good neighbours and not over fly the farm houses below. When on final Mike handed back control and I brought us down for a touch and go. I tend to not to keep the C42 flying for long enough to lose all the speed before touching down instead I let it touch down and then try to keep the nose up, I find my hand seems to freeze on the stick at the point when I should be pulling back more! So on my next time around I will keep this in mind. Full power and back up we go, yep I didn’t put enough rudder in again, it seems so easy when Mike does it and I know what I should be doing, but for some reason putting it together is an issue for me, I guess it’s just practice.

Circuit training Runway 24

Circuit training Runway 24

200ft flaps up, 500ft fuel pump off, 700ft level out, allow speed to build to 70 knots, power back to around 4,000 rpm, fly passed the farm house and then turn on to cross wind aiming for the intersection of the drains, turn on to the downwind leg after clearing another farm house, check temperatures and pressures, check fuel, check harnesses, and make the downwind call. Turn on to the base leg and check there is no activity on the runway or any aeroplanes on approach, almost level with the runway power off hold the nose at the same attitude and watch the speed fall in to the white arc, Flaps to first stage and turn on to final, maintain speed and correct alignment with the runway centre line, I have a tendency to overturn and then need to correct it, another note to self not to do it next time! Continue decent and touch down, dame should have kept it flying longer, power on and around we go again. On the next approach Mike says we are going to stop on the runway, did I do something wrong? has he given up on me! Down we come, I keep it flying a bit longer, which I’m pleased with, but Mike asks what’s wrong with the other 2/3 of the runway on the right, I back track down the runway and we go around again, this time I got the take-off right not to little or too much rudder, even Mike comments on it and says “that’s much better, all your take-offs should now be like this”, around we go again for the last time this lesson. My last landing wasn’t to bad either, maybe, just maybe I’m improving! Time to taxi back and clean up the aeroplane on route, flaps up and transponder off, I park up outside the hanger and perform the mag check before shutting down.

Mike debriefs me on my flying and sets out what we are going to do next time. Next time we are going to work harder on losing the speed before touching down in the first half of the lesson and then in the second half we are going to use full flaps and see what difference it makes. I took this opportunity to mention to Mike that I have been revising my Air Law and thought I may be ready to try it so long as there was an option to retake it should I fail! Apparently you can retake the test 3 time at the club after that you need to go to the CAA at Gatwick, fingers crossed that doesn’t happen. Back in the clubhouse Mike asks Katie the AFI to test me on some of the signals and symbols and I do quite well as I made some flash card for these which were a great help in learning them. So with much trepidation on my part we decide that I should take the exam there and then.

Mike and I go into his office and I sit at the desk while Mike randomly pulls out a test paper and sets it on the desk next to the answer sheet and blank paper, Needless to say before taking the test Mike has me leave my phone, book and revision papers outside the office. The questions are multiple choice each with 3 choices and there is 20 question in total for the Air Law exam, you have a strict 30 mins to answer all the questions in. I did find some of the questions a bit ambiguous, but have decided not expand on these or what questions the paper contained, as there is only 3 papers and you need to know the subject for safe flying not just how to pass the exam. All except 2 where covered in the “The Microlight Pilot’s Handbook” 8th Edition by Brian Cosgrove in the Air Law chapter, these 2 may be elsewhere in the book or I may just have missed them. After around 20 mins I could do no more. One of the questions I knew the answer to, but for the life of me I could not remember and all the answers looked plausible, needless to say I guessed it wrong, but I still passed the exam with what I would say was a respectable percentage.

 

All in all a good day at the club.

 

 

 

Little Gransden Air Show 2013

25th August 2013, a day I will remember for a long time, no it was not the day of my first solo that is still to come, in fact I was not long into my training on the 25th. This was the day I first got to fly into an air show, although the day did not look promising to start with. The plan was to get to Chatteris at around 10:00 and then fly over to Little Gransden Air show. On the day I was quite excited about this, so I got to the club about 90 mins early, but it was a very grey day and it was looking unlikely that we would be able to fly to the show. As time went by the cloud began to lift and we got the aeroplanes out of the hanger. It was the first time I had been early enough to take part in this, I normally opt for an afternoon lesson. Once we got the Microlights out Mike talked me through doing the oil check and burping the engine on the training one. They have a dry sump so before the first flight of the day you need to turn the engine over on the propeller by hand to get some oil in to the engine, as you do so you get the gurgling/burping sound that tells you have done enough rotations.

Now with the aeroplane checked out and burped it was a waiting game to see if the cloud would continue to lift, while we waited Mike showed me the route we would be flying and how to read a weather chart, Mick was on his phone to someone near or at the show and they said it was OK their end. At around 11:00 Mike said lets go and we all flew out, three C42’s and a thruster all flying the short journey. We got airborne at 11:15 and the flight was uneventful, we flew higher and fast then Hazel’s thruster and I remember seeing it bellow and to one side as we went passed.  

Mike took the controls as we turned on to base leg and flew us in, shortly after parking up a Yak 52 landed behind which was great to see.

As we walked around to the reporting point a number of the crowd asked about our aeroplanes and where we were from. As we walked by the display aeroplanes Mike stopped to talk to most of the pilots, it seems everyone knows Mike!

The show itself went off well and was a day to remember after all it’s not every day you can fly into an air show!

My next few lessons

My next few lessons built on the things we covered in the first lesson and introduced Climbing, Descending and Medium level turns. There is not too much to say about these, other than a lot focus is given to learning the correct attitude of the aeroplane for each. When climbing like in the straight and level lesson you are taught look at where the horizon cuts across the windscreen and maintain this, which gives a consistent attitude of climb. Importantly you also need to ensure the airspeed is maintained at the optimum for the climb. We climb on full power and at the correct attitude our speed is 60 Knots.

What I do remember about the lesson on turning was when banking without using the rudder the aeroplane rolls and then the nose moves in the opposite or wrong direction before coming back to where you want it, this was explained as “adverse yawl” and given as the reason we add rudder whenever we use the ailerons which will keep the plain in balance.

Adverse yawl I found interesting as when we were back in the club house Mike got out his whiteboard pens and explained what was happening. It went something like this:

Adverse yaw is a secondary effect of the ailerons. When the ailerons are moved, one of its effects is increase lift on one wing and to decrease lift on the other which is why the aeroplane rolls. However the secondary effect of increasing lift is to increase drag, this slows the wing and causes the aeroplane to yaw towards the wing generating the lift and most drag. The result is that when rolling an aircraft for a turn, the aircraft will have a tendency to want to yaw in the opposite direction of the roll. This is corrected by feeding in some rudder in the direction of the turn.