What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The a/c was performing slow flight and recovery practice manuevers, when the pilot noticed that the control wheel required significant forward pressure to maintain level flight. The a/c wanted to pitch up and the electric trim had no effect. The pilot turned off the electric trim and pulled the auto pilot circuit breaker, and attempted to move the manual trim wheel which was stuck in the full aft position. The a/c landed uneventfully at bed. Investigation revealed that the trim cable jackscrew stop pin was not contacting the trim drum before the turnbuckle ferrule reached the aft pulley at station 228.3. This condition caused the turnbuckle ferrule to wedge between the pulley and cable guard, preventing the cable from moving, when full aft trim was applied. The stabilator trim system was re-rigged in accordance with the maintenance manual and functionally checked ok.
As the FAA filed it
(-23) THE A/C WAS PERFORMING SLOW FLIGHT AND RECOVERY PRACTICE MANUEVERS, WHEN THE PILOT NOTICED THAT THE CONTROL WHEEL REQUIRED SIGNIFICANT FORWARD PRESSURE TO MAINTAIN LEVEL FLIGHT. THE A/C WANTED TO PITCH UP AND THE ELECTRIC TRIM HAD NO EFFECT. THE PILOT TURNED OFF THE ELECTRIC TRIM AND PULLED THE AUTO PILOT CIRCUIT BREAKER, AND ATTEMPTED TO MOVE THE MANUAL TRIM WHEEL WHICH WAS STUCK IN THE FULL AFT POSITION. THE A/C LANDED UNEVENTFULLY AT BED. INVESTIGATION REVEALED THAT THE TRIM CABLE JACKSCREW STOP PIN WAS NOT CONTACTING THE TRIM DRUM BEFORE THE TURNBUCKLE FERRULE REACHED THE AFT PULLEY AT STATION 228.3. THIS CONDITION CAUSED THE TURNBUCKLE FERRULE TO WEDGE BETWEEN THE PULLEY AND CABLE GUARD, PREVENTING THE CABLE FROM MOVING, WHEN FULL AFT TRIM WAS APPLIED. THE STABILATOR TRIM SYSTEM WAS RE-RIGGED IN ACCORDANCE WITH THE MAINTENANCE MANUAL AND FUNCTIONALLY CHECKED OK.
Other reports on N2145M · 1
Matched to the same aircraft by N-number and date.