SDR L48S2016FA0000436

Service difficulty report · Pushrod · Piper PA44180

Difficulty date: September 14, 2016
Submitted: September 19, 2016
Operation: General aviation
Aircraft: N781LU
Make and model: Piper PA44180
Aircraft serial: 4496369
Aircraft time: 1,090 hours
Engine: Lyc LO360A1H6
Engine time: 1,090 hours
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Pushrod
Part number: 15F1995730
Condition: Worn
Location: Engine
Part time: 1,090 hours
Component: Engine · Lyc · LO360A1H6
Component part number: LO360A1H6
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

DURING CHANGE OF CYLINDERS 1, 2, 3 AND 4 IAW CUSTOMER REQUEST, EXCESSIVE WEAR OF PUSHRODS, ROCKER ARMS WERE OBSERVED. EXCESSIVE WEAR APPEARS TO BE DUE TO OIL STARVATION, CAUSING EXCESSIVE VALVE LASH CLEARANCE AND CHATTERING. TIME SINCE LAST OIL CHANGE AND OIL ANALYSIS LESS THAN 50 HOURS. NO ABNORMALITIES REPORTED FROM OIL SAMPLE TEST.

More about the Piper PA-44-180