What was found
ON APPROACH, AIRCRAFT'S RIGHT ENGINE STARTED RUNNING ROUGH. FOUND NR 6 CYLINDER EXHAUST ROCKER SHAFT HAD CRACKED IN HALF CAUSING SHAFT TO FALL OUT OF THE CYLINDER. THIS CAUSED THE EXHAUST VALVE NOT TO OPEN.
- Difficulty date
- April 2, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N932H
- Make and model
- Doug DC3C
- Aircraft serial
- 34368
- Engine
- Pwa R183092
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Rocker Shaft
- Part number
- 33250
- Condition
- Failed
- Location
- Nr 6 Cylinder
- Part time
- 3,682 hours
- Component
- 577062
- Stage of operation
- AP
- Nature of condition
- E, R
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.