Service difficulty report · Exhaust Valve · Airtrc AT401

Difficulty date
July 29, 2011
Submitted
September 28, 2011
Operation
General aviation
Aircraft
N45332
Make and model
Airtrc AT401
Aircraft serial
4010772
Aircraft time
11,000 hours
Engine
Pwa R1340*
Propeller
Hamstd 23D40
Part
Exhaust Valve
Condition
Stuck
Location
Cylinder
Component
Cylinder · Pwa
Component part number
399359
Stage of operation
AG
How discovered
O
Nature of condition
E, R, J
Precautionary procedure
A

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

What was found

ACFT DEVELOPED HEAVY VIBRATION DUE TO A STUCK EXHAUST VALVE IN THE CYLINDER ASSY.