Service difficulty report · Exhaust Valve · Dhav DHC3

Difficulty date
September 2, 2004
Submitted
March 3, 2005
Operation
General aviation
Make and model
Dhav DHC3
Aircraft time
20,283 hours
Engine
Pwa S3H1G
Part
Exhaust Valve
Part number
71167
Condition
Destroyed
Location
Cylinder
Component
Cylinder · Pwa
Component part number
AE92181ER
Stage of operation
CR
How discovered
9
Nature of condition
B, R
Precautionary procedure
A

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

What was found

(CAN) ENGINE RAN ROUGH AND SMOKING IN FLIGHT, LANDED ON LAKE, INSPECTION REVEALED EXHAUST VALVE FAILURE AND RESULTED IN SEVERE PISTON DAMAGE. CYLIDER REPLACED AND AIRCRAFT RETURNED TO MAIN BASE.