SDR CA120822018

Service difficulty report · Exhaust Valve · Piper PA31350

Difficulty date: August 21, 2012
Submitted: September 14, 2015
Operation: General aviation
Make and model: Piper PA31350
Engine: Lyc TIO540J2BD
Propeller: Hartzl HCE3YR2A
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Exhaust Valve
Part number: LW16740
Condition: Broken
Location: Nr 3 Cylinder
Part time: 1,918 hours
Stage of operation: CR
How discovered: O
Nature of condition: R
Precautionary procedure: O

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

What was found

(CAN) THE ACFT HAD AN EXHAUST VALVE, PN LW-16740 BREAK ON LT ENGINE, NR 3 CYLINDER. THE BROKEN PARTS DAMAGED THE PISTON AND CYLINDER HEAD AND ALSO DAMAGED THE TURBOCHARGER, PN LW-12463 TURBINE WHEEL. THE PILOT REPORTED THE ENGINE SLOW TO SPOOL UP, HIGHER EGT, AND A SPLIT IN THE POWER LEVERS.

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