FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 8. Engines, Fuel, Exhaust, and Propellers | 6. Propeller Tracking and Vibration | 8-109. Vibration
AC 43.13-1B
9/8/98
f. The propeller spinner can be a con-
tributing factor to an out-of-balance condition.
An indication of this would be a noticeable
spinner “wobble” while the engine is running.
This condition is normally caused by inade-
quate shimming of the spinner front support or
a cracked or deformed spinner.
FIGURE 8-30. Propeller tracking (wood block or cowling fixture shown).
8-110.8-129. [RESERVED.]
Page 8-42
Par 8-109