TM 55-1520-240-23-4
5-75.1
CHECK AND ADJUST ROTOR BLADE TRIM TAB ANGLE
(Continued)
5-75.1
3.
Install checking assembly (4) on trim tab (2).
Check that UPPER AIRFOIL marking is facing
up. Make sure checking assembly is fully seated
on trim tab. Tighten thumb screw (3).
4.
Read the angle indicated by checking assembly
(4) at scale on angle indicator (1). Compare
angle with the angle value stenciled on trim tab
(2).
NOTE
Measurement of trim tab angle shall
always be made at the inboard end
of trim tab.
5.
If measured angle is the same as angle stenciled
on trim tab (2), go to step 7.
6.
If measured angle is not the same as angle
stenciled on trim tab (2), proceed as follows:
a.
Loosen thumb screw (3) and remove
checking assembly (4) from trim tab (2). Stow
checking assembly on angle indicator (1).
Tighten thumb screw.
b.
Remove angle indicator assembly (1) from
blade.
5-430