What was found
NR 3 ENGINE SHUT DOWN DUE TO BACK FIRING AND RUNNING ROUGH. NR 1 CYLINDER DOUBLE SHORTED SECONDARY. REPLACED NR 1, NR 2 AND NR 4 CYLINDERS SPARK PLUGS DUE TO FOULING AND CRACKED CERAMICS.
- Difficulty date
- October 28, 2003
- Submitted
- October 29, 2003
- Operation
- Air carrier
- Aircraft
- N43872
- Make and model
- Doug DC6
- Aircraft serial
- 533294
- Aircraft time
- 34,991 hours
- Engine
- Pwa R2800CB3
- Engine time
- 1,834 hours
- System (JASC)
- 7421 · Spark Plug/Igniter
- Part
- Spark Plug
- Condition
- Cracked
- Location
- Nr 3 Engine
- Part time
- 375 hours
- Component
- Engine · Pwa
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- R, J
- Precautionary procedure
- E
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.