Sunday, November 09, 2008

Old circuits, new airspace - Nov 8

Saturday afternoon's lesson was 2:30-4:30. Throughout the morning it had been dumping rain, with mist and low ceiling. At about noon the weather started to break, and we have a nice high ceiling and perhaps 40% cloud cover by 2:30. My flight was the first one of the day for the school, and throughout the two hours there was virtually no traffic. With the bad weather this morning, there were no departures, and there certainly was not going to be the just-before-sundown swarm of arrivals.

Runway heading is 280 degrees magnetic, and the wind was from 210 degrees, so there was a stiff (10-15 knot) crosswind 70 degrees from the left. But while it was stiff, it wasn't gusty.

Back-tracking down the runway there was a flock of seagulls sitting and pooping in the middle of the runway. I approached them slowly, hand on the mixture control ready to immediately shut down the engine if something started flying my way (a bird collision with the airplane is a clunk - a collision with a moving propeller will certainly be messy, and could be expensive. Eventually they all bugged out.

Exit 28 on Bravo to the run up area, did the pre-flight check, get back on Bravo, holding short of 28 and three of the birds were back. I didn't want to do a take-off run through birds, and seagulls are stupid - I had no confidence that they'll get out of the way when I started my run. So I taxied the 300 feet down the runway to shoo them again, backtracked to the position, then we took off.

If the birds had returned while backtracking then I would have just taxied 400 feet down the runway and started my take-off run on a 3500 foot runways instead of 3900 foot.

We started with three touch&go circuits at Carp. After the second take-off I told the instructor "let's just stay dual today". The circuits were going well, but the crosswind was stiff and I wanted the extra ballast so I could practice the crosswinds without dealing with the long float times.

After the third touch&go we headed north to the practice area to practice some straight&level flight, working the GPS (Garmin 430), switching radio frequencies, calls when leaving and entering different areas, lookouts and basic airmanship.

Over Fitzroy Harbour we turned west, left the practice area and entered Arnprior's airspace.

Wow. This is new territory.

En route descent from 2000' to 1400', turn south over the gravel pit, fly over the Ottawa River, then "downtown" Arnprior (CNP3), over the field and join the mid-left downwind.

The approach to the runway is over water (first time) but that was not a factor in either the visual cues, or in the activity of the air.

As we approached the runway threshold there was significant wind shear, as the wind blows over open fields and water, then over a ridge and then descending land - shaped just like an airplane wind, requiring lots more throttle to maintain airspeed and a reasonable rate of descent. Suddenly we moved out of that flow of air, airspeed quickly went from 55 to 70 knots, and we started climbing. Chop the throttle, glide down to a landing.

Next circuit I kept my final approach much higher and caught only a bit of the turbulence.

Because of the strong winds I tried doing my approaches at 65 knots instead of 60, and reducing power to 1200 RPM instead of idle during the flare. That worked much better. Though on one landing my power was at about 1400 RPM and we floated forever. I choose to stop&go rather than touch&go.

Turn south after the last circuit, en route climb to 2000 feet, overfly Packenham, nudge through the Ottawa Practice Area airspace (more radio calls), then more radio calls for Carp's frequency, power-off descent over the town of Carp, join the mid-left downwind, drill through the sink at the end of 28 and land.

And on this landing, with the winds from the left, I landed on the left main landing gear only (as you are supposed to), then lowered the right main, then the nose wheel.

In all, this was a Very Good Day.

Time: 1.5 Dual
Landings: 9

Done well:
  • Managing those dumb birds, having a contingency plan if they kept returning
  • Radio work, including frequency changes and area changes
  • Straight & level flight - I was tracking within 20 feet even when working with the GPS
  • Crosswind landings
  • Airport approaches
  • Handling turbulent air on final approach

No comments: