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Old 07-10-2009 | 05:59 AM
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CGRetired
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From: Galloway, NJ
Default RE: Pattern IMAC F3A questions

If you have the option, what's nice is to have someone behind you reading off each maneuver as you end the last one. Someone "calling" out the sequences. They have to recognize what maneuver you just completed so they know what's coming up next, then they have to have the right timing, sort of as you exit the maneuver to let you know what's coming up next so you can set it up.

You do this in just a second or two as you either finish up the maneuver or immediately after you exit the maneuver. We also try to stay one step ahead so you know what's coming and you can mentally prepare for it. That too takes.... yeah, you guessed it... practice.

Once you get into a "routine", meaning, after several outtings, and you are beginning to get comfortable with doing thing in sequence like that, you learn that, if you screw up a maneuver during practice, you can abort a maneuver, make a quick turn around, get into position, and do it again then continue.

Gene, there is a set of instructions, I have them somewhere, that outlines the step by step process of mechanically setting up your aircraft for pattern (or for anything else for that matter). It defines what happens during a series of maneuvers and how to make the mechanical corrections to get the plane "dialed" in properly. You would not believe how much subtle differences can make in the outcome of some maneuvers. The main point is to get it set up so your first pass after takeoff, the "trim pass" takes a minimum of electronic adjustment (TX trim tabs) to get it flying straight and level.

As always, one thing leads to another.. so the mechanical "dialing in" process starts out with a specific maneuver, then moves on in a serial fashion to the next logical step. Then, once you are done, you do it again. Like anything else, an adjustment here can change something there.. and so on, so you go through this several times, statistically, three times is probably the maximum because if you do it right, after three times, you begin to go through the motions and begin to actually change things back or make no appreciable changes the mechanical trim.

It takes several flights, because you make a flight, do a maneuver, land, make the adjustment, then put it back in the air and check it, land, make another slight adjustment, then take off, and check it. Then you move to the next maneuver or action, determine what needs to be changed, land, make the adjustment, takeoff.. and the routine goes on and on until you are finally finished.

Then, once done, you fly your pattern and can actually see the differences.. very dramatic. As I said, it takes time and patients, but it really helps dial in the subtle points of your particular aircraft. Some items will actually require you to make a change in the thrust angle of the engine!!! It gets town to that level!!! As I said, time consuming, but in the end, if you really want to do pattern, almost absolutely necessary.

Anyway, I'll try to find that adjustment sequence and Email it to you. I belive I have your Email address in my address book.

CGr.