What was found
NR 4 ENGINE SHUTDOWN DUE TO NR 13 CYLINDER DOUBLE SHORTED SECONDARY. FOUND FRONT PLUG FOULED AND REAR PLUG WITH CRACKED CERAMIC. REPLACED WITH SERVICEABLE PLUGS, REF: NAC MM SEC. IV PG. ECO5.1. OP CHECKED GOOD.
- Difficulty date
- December 24, 2005
- Submitted
- December 28, 2005
- Operation
- Air carrier
- Aircraft
- N99330
- Make and model
- Doug DC6A
- Aircraft serial
- 43576
- Aircraft time
- 31,704 hours
- Engine
- Pwa R2800CB3
- Engine time
- 468 hours
- System (JASC)
- 7421 · Spark Plug/Igniter
- Part
- Spark Plug
- Part number
- URHB32E
- Condition
- Cracked
- Location
- Nr 13 Cylinder
- Part time
- 239 hours
- Component
- Cylinder · Pwa
- Component part number
- 356994
- 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.