What was found
DURING L CHECK FOUND CRACK IN NR 4 PYLON REAR ENGINE MOUNT BULKHEAD FORWARD FRAME AT NAC STA 222.90. REPAIRED PER EA 67-213556.
- Difficulty date
- August 22, 2008
- Submitted
- September 12, 2008
- Operation
- Air carrier
- Aircraft
- N631NW
- Make and model
- Boeing 747251B
- Aircraft serial
- 23111
- Aircraft time
- 88,957 hours, 13,513 cycles
- System (JASC)
- 5411 · Nacelle/Pylon, Frame/Spar/Rib
- Part
- Frame
- Condition
- Cracked
- Location
- Nr 4 Pylon
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.