Service difficulty report · Link · Lancar LC40550FG

Difficulty date
December 16, 2003
Submitted
December 16, 2003
Operation
General aviation
Make and model
Lancar LC40550FG
Aircraft serial
40008
Aircraft time
206 hours
Engine
Cont IO550N
Engine time
206 hours
Propeller
Hartzl PHCC3YF1
Part
Link
Condition
Mismanufactured
Location
Aileron
Stage of operation
IN
How discovered
V
Nature of condition
W
Precautionary procedure
K

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

What was found

WHILE RIGGING AC, USING TORQUE SPEC FROM MFG MM. AILERON FINAL CONTROL LINK THREADS WERE DESTROYED WHILE ATTEMPTING TO REACH LOW END OF SPECIFIED TORQUE (REF MFG MM CHAP 27, SECT 27-10, B., STEP 9). THE MFG WAS NOTIFIED OF THIS SITUATION AND RESPONDED WITH: USE SPECIFIED TORQUE FOR LINK (REF DWG LA57275900 REV B, WHICH DIFFERS FROM MM). NEW LINK WAS ORDERED AND DURING TORQUING PROCEDURE, THREADS ON LINK WERE DESTROYED AGAIN. TORQUE WRENCH USED IN BOTH INSTANCES WAS CHECKED WITH OUR IN SHOP CHECKER AND VERIFIED TO BE WITHIN SPEC. TRIED TO CONTACT COMPANY REP BUT HAD NO RESPONSE TO OUR INQUIRES.