What was found
NR 4 PYLON HAS CRACK IN I/B UPPER STIFFENER AT INTERNAL ANGLE AFT OF THE FWD ENGINE MOUNT BULKHEAD NAC STA 128.
- Difficulty date
- March 4, 2008
- Submitted
- March 4, 2008
- Operation
- Air carrier
- Aircraft
- N715CK
- Make and model
- Boeing 747209B
- Aircraft serial
- 22447
- Aircraft time
- 86,589 hours, 20,860 cycles
- System (JASC)
- 5412 · Nacelle/Pylon, Bulkhead/Firewall
- Part
- Stiffener
- 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.