What was found
During "L" check found crack on number 4 pylon torque bulkhead. Repaired per EA 67-193401.
- Difficulty date
- December 16, 2002
- Submitted
- January 13, 2003
- Operation
- Air carrier
- Aircraft
- N640US
- Make and model
- Boeing 747251F
- Aircraft serial
- 23888
- Aircraft time
- 59,097 hours, 13,032 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.