Service difficulty report · Elbow · Piper PA31P

Difficulty date
October 10, 2007
Submitted
December 19, 2007
Operation
Air carrier
Aircraft
N647SC
Make and model
Piper PA31P
Aircraft serial
31P7300129
Engine
Lyc TIGO541E1A
Propeller
Hartzl HCC3YR2
Part
Elbow
Part number
LW12088
Condition
Worn
Location
Turbocharger
Stage of operation
TX
How discovered
O
Nature of condition
A
Precautionary procedure
O

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

What was found

RT ENGINE OIL SUPPLY FITTING TO TURBOCHARGER AND WASTEGATE PULLED OUT OF CASE ALLOWING OIL TO SPRAY ONTO TURBO AND WASTEGATE. THIS CAUSED AN OIL FIRE AFT OF THE EXHAUST PIPE WHICH DAMAGED THE RT FLAP AND RT OB GEAR DOOR. SUSPECT THAT O-RING UNDER FITTING RETAINING NUT EXTRUDED OUT OVER TIME AND ALLOWED THE NUT TO LOSE TORQUE WHICH ALLOWED THE FITTING TO VIBRATE THUS WEARING THE THREADS UNTIL THEY DISENGAGED. REPAIRED BY INSTALLING A HELI-COIL AFTER TALKING TO THE MFG REP. (K)

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