Ca 1900

[chperplt]

All the manual trim wheel test will do is show you movement fore and aft of the wheel. There is still no way of telling if a full wheel movement equated to a full trim movement, or if that movement is rigged properly.

 

[B190Captain]

All the manual trim wheel test will do is show you movement fore and aft of the wheel. There is still no way of telling if a full wheel movement equated to a full trim movement, or if that movement is rigged properly.

Very true. As for the relation between the wheel setting and the trim tab itself, you're right, you can't tell.

It has been suggested that someone should stand at the tail while you are conducting this test and visually confirms proper trim movement. That could help but obviously that is not precise.

If the trim was rigged improperly to full aft or forward setting you could tell because the wheel would stop turning to a position indicated by the tick marks that could give us an idea that the rigging was set improperly.

 

[great cornholio]

Past few first flights of the day Ive done I started doing this. First put the trim to full nose down then look at the trim tabs they should be above the elevator. Then put the trim in full nose up now the tabs should be below the elevator. You cant really tell if they are at true full travel but you can atleast tell that the trim will move the the right direction. Also for the take off setting the tabs are usually just barely below the elevator. Like I said its not too scientific but it at least its something. Oh yeah I just remembered something that I heard in recurrent but forgot to try so Ill throw it out here so more people can try it and see if it really happens. One of the pilots said that he noticed that if he pushed and held the trim disconnect switch on the yoke down and held it that he could not move the trim wheel with his hand until he let go of the button. Ill have to remember to try that next time I fly but anyone else try this yet? Can you move it or not?

 

[chperplt]

What you heard is true... Also.. If either electric trim switch is engaged, you cannot manually trim the airplane. How many times do the switches stick open???

 

[ktthomas11]

I'm not familiar with the civilian checks in the 1900, but wouldn't a full AP check be completed following maintenance work? I'm a military guy and my procedures are different... I just wanted to know what is required.

Don't take my question as criticizing the pilot, either, since we all hate that when it is done to us.

 

[acaTerry]

Darn, those 152's are starting to look good again

 

[socalpilot]

I'm not familiar with the civilian checks in the 1900, but wouldn't a full AP check be completed following maintenance work?

What's a full AP check?

 

[ktthomas11]

In the Army King Air procedures, we are required to check the Autopilot on the ground in all nav modes, to include the trim, before the first flight. It is a fairly lengthy check... probably the longest check we did before T/O. Again, though, this was what the military required. I take it there isn't a requirement to do this in the civ 1900's?

 

[great cornholio]

No autopilot in the 1900

 

[jobear]

I thought I was the AutoPilot?

Jobear