What was found
During "H" check found crack in #4 pylon aft torque bulkhead chord at the top fastener hole common to the lower spar fitting. Repaired per EA 67-165046.
- Difficulty date
- February 27, 2003
- Submitted
- March 3, 2003
- Operation
- Air carrier
- Aircraft
- N644NW
- Make and model
- Boeing 747212F
- Aircraft serial
- 24177
- Aircraft time
- 55,297 hours, 9,979 cycles
- System (JASC)
- 5412 · Nacelle/Pylon, Bulkhead/Firewall
- Part
- Bulkhead
- Condition
- Cracked
- Stage of operation
- IN
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.