What was found
NR 4 ENGINE SHUTDOWN DUE TO EXCESSIVE BACKFIRING, SUSPECT NR 16 CYLINDER. REPLACED NR 4 ENGINE NR 16 CYLINDER FRONT SPARK PLUG AND SHORT LEAD IAW 6-11 AND 6-12 MB PAGES 6-31 AND 6-34.
- Difficulty date
- December 24, 2005
- Submitted
- December 27, 2005
- Operation
- Air carrier
- Aircraft
- N6174C
- Make and model
- Doug DC6A
- Aircraft serial
- 44075
- Aircraft time
- 52,062 hours
- Engine
- Pwa R2800CB3
- Engine time
- 1,496 hours
- System (JASC)
- 7421 · Spark Plug/Igniter
- Part
- Spark Plug
- Part number
- URHB32E
- Condition
- Fouled
- Location
- 4 Eng/16 Cyl
- Part time
- 103 hours
- Component
- Cylinder · Pwa
- Component part number
- 356993
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- R
- Precautionary procedure
- E
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.