Sunday, February 25, 2007

Checkride Part 2a: The flight exam

So you know from reading the the beginning of the oral exam post that it was uncertain due to winds whether the checkride would actually transpire today. The little voice in my head was thinking about the wind conditions for my first solo, and I gotta admit that made the hairs on the back of my neck stand up. But I've come a long way, baby, and am much better equipped to handle some bumps now.... Still, these could be major bumps, and the questions of (1) aircraft crosswind limitations and (2) personal limits had to be asked.

When I departed for AKQ, the winds had settled somewhat and were within both plane and personal limits. On the high end of the limits, but within. Pre-checkride forward-slip landing practice was canceled on account of the winds, but closer to the zero hour it was acceptable.

This is what the conditions were between the time when I arrived at AKQ just before 11 am and just after I left a little after 4 pm:
KAKQ 241954Z AUTO 03011G16KT 10SM CLR 09/M12 A3018 RMK AO2 SLP222 T00941117 TSNO
KAKQ 241854Z AUTO 03005KT 10SM CLR 09/M12 A3019 RMK AO2 SLP226 T00891122 TSNO
KAKQ 241754Z AUTO 01007KT 10SM CLR 08/M12 A3021 RMK AO2 SLP233 T00781122 10078 21061 58018 TSNO
KAKQ 241654Z AUTO VRB06KT 10SM CLR 06/M14 A3024 RMK AO2 SLP243 T00561139 TSNO
KAKQ 241554Z AUTO 36010G16KT 10SM CLR 04/M14 A3026 RMK AO2 SLP250 T00441144 TSNO
KAKQ 241454Z AUTO 33008KT 290V010 10SM CLR 03/M16 A3026 RMK AO2 SLP251 T00281156 50009 TSNO

Big fun, eh?

So after the oral exam, we headed out to 388 and Linda asked me to do a thorough preflight, except that fuel samples wouldn't be necessary. I was to talk her through the process and point out where samples would be taken. I was actually caught a little off-guard by that. I figured that since the plane had been out of my sight for over 2 hours at an unfamiliar airport that sampling I would need to do. It may have been a challenge from her to see if I, as PIC, would do the conservative thing or not. I did not check the fuel, and she didn't say anything about that.

I walked around with my checklist, and about the time I got past the right wing up to the nose she got chatty. Ah, perhaps this is a distraction test. She asked me a question, and I heard her but blocked her out long enough to mark my place on the checklist. I then talked to her and came back to my checklist, letting her know I was going back two items in the list to ensure that I hadn't missed something. Score! A minute later the same thing happened again, and I responded the same way. Then another pilot based at AKQ came out and talked to her so I was largely unsupervised for the rest of the preflight.

We hopped in and got organized. I noticed that she didn't fasten her seatbelt, and assumed that was another test -- she has to have billions of hours, so not buckling up wouldn't be a mistake on her part. I didn't say anything yet, knowing that it was one of the first few items on the in-cockpit checklist. Preflight inspection, complete. Passenger briefing -- here we go. I explained how the seatbelts work and asked her to fasten in and tighten down, then explained the door operation, then asked her to not touch anything unless we had an understanding about it, and asked her to continue the briefing so we would know what to expect on the flight. She said we'd start with the x-c and at some point would break off to do instrument work, maneuvers, and so forth then do some landings and debrief at AKQ. Super! I was so excited!

The rest of the preflight was fine and normal and before long we were rolling to the threshold. At AKQ you enter the runway pavement on the numbers for 2, so if you want 20 you have to back-taxi the entire length. I paused before the threshold line to assess the current winds. Variable, still, but favoring 2. Well at least that part would be easy! I announced that I was departing 2 and would leave the pattern to the northeast.

And that I did, though the mechanical turbulence over the treetops, and began my climb to the x-c cruise altitude of 4500'. It was bumpy all the way up, as expected! The surprise was that at about 4400' the chop switched off, just like that. The whole x-c portion at 4500' was actually nice and smooth! I got an opportunity during the climb, though, to demonstrate traffic-scanning effectiveness; maybe ~2500' I saw a twin-engine out in front of us going the opposite direction, perhaps half a mile or so to our left and a couple thousand feet above. I pointed him out as "no factor" and continued the climb.

Here's an overview pic of the checkride flight (click to enlarge):


What I've learned from x-c planning is to not start the timer between checkpoints from takeoff, but rather from the first checkpoint, selected to coincide with reaching cruise altitude. I had shown Linda the calculations that did take that climb leg into account for total trip time and fuel consumption, and she ok'd that plan. I hit checkpoint #1 just below 4500', but started my timer anyway and jotted down the time and the ETA for checkpoint #2. I then checked the sectional to be positive of our position. Linda was pointing out features here and there and amidst scans for traffic and scans of the instruments I would indicate whether they were or were not on the sectional. (In the debrief she praised my pilotage skills! :) ) Of course, those could have been distraction attempts, too, because she had quite a few things to point out.

The second checkpoint would be a turn in the power lines we were following. We got there just barely behind schedule, which surprised the hell out of me since the winds now were supposed to be dramatically lighter than the ones predicted when I had done the calculations earlier in the morning. Something was wrong, but I didn't put my finger on it yet... I knew the plan was to fly straight (as though the power lines hadn't turned) until we hit I-95, then turn SSW. We got to I-95 ahead of schedule, according to my navlog calculations. Hmmmm...

I turned off SSW and followed the interstate with it out my window, since that was the plan. I consulted the sectional to make sure that the interchange on I-95 that was the checkpoint was indeed the one I expected. It was. So what was wrong? Why were the times off, and off inconsistently?

Duh! I wanted to throw myself out the window in shame! For the whole trip, I had picked 17 checkpoints, and that required two navlog forms. I had the second page of checkpoints on top and hadn't noticed! Bonehead! I made this realization and was analyzing my options (transfer times to the right log boxes? ignore those first two and just get back on track by starting the timer at the next checkpoint?) when Linda asked me to calculate our groundspeed based on the past checkpoints and then estimate remaining time en route. I immediately admitted my mistake and said that I planned to start the timer at the next checkpoint to get on track, and that after the following checkpoint I could do that calculation.

Still suffering my self-humiliation, after hitting the checkpoint and starting the clock I realized that I didn't need to do that to give her the time en route. The last minute of shame fell away completely as I refocused and pointed out that the GPS gave me groundspeed and suggested that I could calculate from that. She approved, I did the math, and came up with roughly an hour to get to LHZ. She was satisfied with that, and I felt a little better.

After one more checkpoint, Linda had me go under the foggles under the guise that we had just unexpectedly flown into clouds. I said I'd be doing a left 180 to go back to VFR weather, but first I wanted to tip my left wing so she could check for traffic for us (brownie points!). I did a nice standard-rate 180, maintaining altitude pretty closely.

Then she asked me to descend to 3000' while maintaining heading. I felt I did that right-on, but the GPS shows some slight right deviation. My first thought is precession of the heading indicator, but it wouldn't precess that quickly, I wouldn't think, and I don't remember which way it precesses anyway.

Anyhow, at altitude she had me turn to headings by IR. These were, in effect, clearing turns. Foggles off, time for stalls!

I swear we did a full-flaps approach-to-landing stall first, but the GPS track indicates a power-on stall first. In any case, I was glad that Chuck had run stall drills in one of our recent pre-checkride flights! The power-on stall was good, and the full-flaps stall, done while turning, seemed good to me. In training we rarely did full-flap stalls, if ever (I'll have to review my flight (b)logs!). The only thing I could remember was what I knew I had been taught about a go-around from a full-flaps configuration: half power, flaps to 20, full power, Vy, milk the flaps the rest of the way. Not using full power initially is to avoid a sudden nose-up; made sense to me that you'd use the same procedure to avoid a secondary stall. So that's what I did, and didn't lose much altitude at all. She didn't say anything then, but when we got back for the debriefing, she laid down the law: always go full-power when recovering from a stall, period. Period.

Staying in slow flight, I let the stall warning squeal while doing requested clearing turns. The foggles then came back on for unusual attitudes. The most inexplicable part of the GPS track is, naturally, during this portion! See that abrupt left (you can't tell from this view, but the side-view shows a roller coaster for altitude, too!) followed by some straight flying (the recovery portion, regaining desired heading and altitude), then a tight-tight climbing turn? Yeah....



After the unusual attitudes, which went just fine, Linda asked for a steep turn. I said that I'd do clearing turns and then start a left-hand steep turn. Near the end of the first half of the clearing turn, she suggested that I go right into the steep turn, and I agreed after vocalizing that I thought it would be ok to use that as the completion of the clearing turn. My left steep turn wasn't very pretty -- a little tight and not ended in quite the right place -- but the altitude was good and that's the #1 thing I was being anal about! As I got perhaps 3/4 of the way through it, she instructed me to go straight into a right-hand steep turn, which I did. Again, not beautiful, but better than the first and the altitude was right on.

I stabilized coming out of the steep turns and had my hand on the throttle, finishing the throttle/altitude/airspeed balancing act, when suddenly she put her hand on top of mine! If I hadn't been surprised I would have been suspicious -- odd time to put the moves on! :) Ha ha ha... I hesitated for a second, glanced over at her, and when she didn't move her hand I decided to withdraw mine. You probably guessed it: simulated engine failure. She pulled out the throttle and sat back to watch.

Instinct is a good thing, and practice gives you that! I talked through what I was doing: trim for best glide speed of 80 mph, pick a landing site and fly towards it.... As you can see from the pictures, southside Virginia is thoroughly bespeckled with fields, so finding a landing site should have been easy, considering we were at something like 3000' when I "lost my engine." But I had a dickens of a time picking a field! First, thinking out loud all the while, I was attempting to assess the winds to see if a particular field orientation would be better and to determine my landing direction. The surface winds had been generally NNW (but variable) when we left the airport, and we were within 15 miles of Wakefield, by my estimation. But I wasn't positive that that was correct now, especially given the variability. Franklin was basically directly in front of us, and the smoke stacks there seemed to indicate a wind from the southeast.

Ok, I'd go by that. I wanted to land on an southeasterly heading, so I started eliminating fields: this one's too short in that direction, that one's good-sized and aligned right but those power lines, ... I swear, it seemed like we had all the time in the world, so I let the standards be too high and just kept looking, confident that I'd spot the right one for the exercise, and frequently checking out the right side as well.

My training says to cross mid-field at 1100' AGL, hit the key point between 800' & 900', and do what you gotta do to get down from there. About the time we were at 1500', I checked the smokestacks again -- the smoke was blowing *to the southeast* now! Yay, variable winds! It was also about that time that I realized the field I was going for had goats in it. Drat, scramble time! Luckily, I looked out Linda's window and there was a gorgeous big green perfect field to shoot for, so I immediately turned right to fly over it, and was over at just under 1100', then did a good normal pattern with 20 degrees of flaps, and as soon as we cleared the trees she told me to abort.

Whew! You can certainly see the lesson in that, in what I did wrong, and we talked about it at the debrief.

As I was cleaning up and climbing, she pointed out my window at a trio of old abandoned-looking barns in the middle of a patch of fields. She asked me to do a turn around a point around those. I said I'd go up to 1000' and do it from there. Another check of the smokestacks indicated winds from the southwest; I explained that I'd use a northeast heading as my downwind entry into the maneuver and did that big loop-de-loo to get positioned right. It became obvious that the winds were not what I thought, or at least they weren't being consistent. I really don't think she had noticed how non-circular my turn was -- she was dialing in Franklin's ATIS and CTAF (presumably so we could shoot landings there). About 2/3 of the way through, though, I was irritated by my turn performance (altitude was just fine) and told her that I was dissatisfied, that I felt that just at that moment the winds were at our back. She said "Okay, then do another one."

Me and my big mouth, huh? But I did it, and as you can see from the GPS track this one was pretty darn good! :)

You know what, that's quite enough for this post! I'll publish the finale, including the reasons why I thought I wouldn't pass, in a bit!

1 comment:

  1. Regards the half-power issue on go-around, I was taught the following flow:

    Cram (full throttle, carb heat off, prop full forward), clean (flaps 20), climb, fight the trim stall. I say out loud "Fight the trim stall," meaning to push the nose down to keep it from pitching up until I can retrim.

    Glad to hear it's going so well. I'm still waiting for the final episode (although we already know the ending and who shot JR).

    Cheers,
    Big Country

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