| TRIM FEATURE |
MANOEUVRE |
OBSERVATION |
CORRECTION |
| Engine Thrust Angle |
From straight flight chop throttle quickly |
A. Aircraft continues level path for short distance |
A. Thrust is correct |
| B. Aircraft pitches nose up |
B. Decrease down thrust |
| C. Aircraft pitches nose down |
C. Increase down thrust |
| Centre of Gravity, Longitudinal Balance |
From level flight roll to 45 Degrees and neutralise
controls |
A. Aircraft continues in bank for short distance |
A. Trim is correct |
| B. Aircraft pitches nose up |
B. Add nose weight |
| C. Aircraft pitches nose down |
C. Increase tail weight |
| Yaw |
Into wind, do inside loops using elevator. Repeat
test doing outside loops from inverted entry |
A. Wings level throughout |
A. Trim is correct |
| B. Yaws to right in both inside and outside
loops |
B. Add left rudder trim |
| C. Yaws to left in both inside and outside
loops |
C. Add right rudder trim |
| D. Yaws to right on inside and left on
outside loops |
D. Add left aileron trim |
| E. Yaws to left on inside and right on
outside loops |
E. Add right aileron trim |
| Lateral Balance |
Into wind, do tight inside loops |
A. Wings are level and aircraft falls to either side |
A. Trim is correct |
| B. Falls off to the left in loops and worsens
as loop tightens |
B. Add weight to right wing tip |
| C. Falls off to the right in loops and
worsens as loop tightens |
C. Add weight to left wing tip |
| Aileron Rigging |
From level flight pull to a vertical climb and
neutralise controls |
A. Aircraft continues along same path |
A. Trim is correct |
| B. Aircraft tends to go to inside loop |
B. Raise both ailerons very slightly |
| C. Aircraft tends to go to outside loop |
C. lower both ailerons very slightly |
