Service difficulty report · Crankshaft · Piper PA31350

Difficulty date
November 12, 2003
Submitted
December 5, 2003
Operation
Air carrier
Aircraft
N59764
Make and model
Piper PA31350
Aircraft serial
317652037
Engine
Lyc TIO540J2BD
Part
Crankshaft
Condition
Broken
Location
Lt Engine
Stage of operation
AP
How discovered
O
Nature of condition
R, J
Precautionary procedure
O

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

What was found

ON APPROACH, ON 10 NOVEMBER 2003, THE PILOT NOTICED FUEL FLOW FLUCTUATIONS AND AN ABRUPT LOSS OF OIL PRESSURE ON THE LT ENGINE AND IMMEDIATELY SHUT THE ENGINE DOWN. PILOT CONTINUED FLIGHT AND LANDED SAFELY WITHOUT FURTHER INCIDENT. PILOT IMMEDIATELY REPORTED THIS PROBLEM TO MAINTENANCE, WHO CAME IMMEDIATELY TO INVESTIGATE THE REPORTED DEFICIENCY. THE MECHANIC DISCOVERED THAT BOTH CASE HALVES WERE CRACKED IN THE VICINITY OF THE SHARED INTAKE CAME LOBE FOR NR 3 AND NR 4 CYLINDERS. FURTHER INVESTIGATION IS NECESSARY TO DETERMINE THE EXACT NATURE OF THE FAULT. WE ARE PROVIDING THIS AMENDMENT TO HELP EXPLAIN THE REASONS BEHIND THE SDR REPORT DATED 11/12/03 REGARDING THE ENGINE PROBLEMS. PURCHASED THIS ENGINE

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