Service difficulty report · Control Arm · Beech RC45J

Difficulty date
November 21, 2006
Submitted
July 25, 2007
Operation
General aviation
Aircraft
N145J
Make and model
Beech RC45J
Aircraft serial
51233
Engine
Pwa R985*
Part
Control Arm
Part number
187504
Condition
Cracked
Location
Elevator
Part time
9,544 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

DURING COMPLIANCE WITH AD 77-19-07 PARA B, DYE PENETRANT INSPECTION REVEALED 2 POSSIBLE DEFECTS, 0.75 INCH AND 0.5 INCH LONG. BOTH INDICATIONS RADIATING FROM THE TAPERED PIN ON THE STARBOARD SIDE OF THE CONTROL ARM. INDICATIONS CONTINUED TO APPEAR AFTER REPEATED SURFACE POLISHING AND DYE PENTRANT, ALTHOUGH NO DEFINITIVE. OTHER DEFECTS AND/OR INDICATIONS OBSERVED. INDICATIONS MAY NOT ACTUALLY HAVE BEEN A CRACK, THE INTERMITTENT LINES MAY BE OLD SURFACE FLAWS. HOWEVER, IT WAS DECIDED THAT THE BEST COURSE OF ACTION WAS TO REPLACE PART. OLD PART DID HAVE THE SMALLER AN 386-3-18 TAPERED PINS, INSTEAD OF THE LARGER, AN 386-5-18 PINS USED ON THE LATER MFG ELEVATOR CONTROL ARMS, THIS MAY HAVE BEEN A CONTRIBUTING

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