Service difficulty report · Control Cable · Socata TBM700

Difficulty date
September 1, 2010
Submitted
September 1, 2010
Operation
General aviation
Aircraft
N843BH
Make and model
Socata TBM700
Aircraft serial
196
Aircraft time
885 hours
Engine
Pwa PT6A64
Part
Control Cable
Condition
Broken
Location
Condition Lever
Part time
885 hours
Stage of operation
TX
How discovered
O
Nature of condition
G
Precautionary procedure
E

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PERFORMED NORMAL START, NOTED LOW IDLE LOW, MOVED CONDITION LEVER TO HIGH IDLE WITH NO RESPONSE FROM ENGINE, TRIED SEVERAL TIMES & HAD NO RESPONSE. PERFORMED ENGINE SHUTDOWN. MOVED CONDITION LEVER IN COCKPIT WHILE 2ND PERSON WATCHED MOVEMENT ON FCU. MOVEMENT NOTED COUPLE TIMES THEN NOTED THAT LEVER MOVEMENT FELT DIFFERENT. IT WAS ALSO NOTED THAT MOVEMENT AT FCU STOPPED ALSO. INSP FOUND CONDITION LEVER CABLE IN PEDESTAL AT LEVER ATTACHMENT BROKEN IN THREADED AREA. THREADED AREA APPEARED TO HAVE CRACKED AREA ON OUTSIDE OF THREADED AREA WITH ONLY .2500 ENGAGEMENT OF TOTAL ROD NOT BEING CRACKED. CONTROLS NEVER SHOWED ANY SIGN OF BINDING. ANGLE ROD FLEXING AROUND CRACKED AREA OF THREADS. DAMAGED AREA OF CABLE THREADED PORTION THOUGHT TO BE FROM THREADING PROCESS AND POSSIBLE TOO SOFT MATERIAL AT MFG. FLEXING CAUSED BY WEAK AREA IN THREADED AREA TILL BENDING WENT TO BREAKING.

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