9-64 FLIGHT CONTROLS / PITCH TRIM TAB
ICON A5 / MAINTENANCE MANUAL CHANGE C3
4. While securing the elevator with a free hand, Push on the bottom surface of the pitch trim tab,
until all upward free play has been removed from the system. Record level reading.
5. While securing the elevator with a free hand, Push on the top surface of the pitch trim tab, until
all downward free play has been removed from the system. Record level reading.
6. Alternatively, repeat procedure, while measuring displacement due to free play with a scale at the
TE of the pitch trim tab.
7. Inspect the maximum diameter of the pitch trim tab control horn hole using a caliper.
8. Remove inclinometer and any tape used to secure it to the elevator trailing edge.
VERIFICATION METHOD:
Record results and check that free play is within these limits. If the tolerance are not met, replace pitch
tab actuator and push rod.
• Maximum system wear =+/-1° of pitch trim tab TE free play or +/-.081 inch of linear travel at TE
of pitch trim tab
Record results and check trim tab control horn hole is within these limits. If tolerance is larger than
specified, repair is required. Contact ICON for repair.
• Maximum trim tab control horn hole diameter = Ø.160 inch
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