What was found
During "H" check found 2 1/4 inch crack in number 3 pylon rear engine mount bulkhead frame assembly. Repaired per EA 66-185922.
- Difficulty date
- October 30, 2001
- Submitted
- December 6, 2001
- Operation
- Air carrier
- Aircraft
- N642NW
- Make and model
- Boeing 747212B
- Aircraft serial
- 21942
- Aircraft time
- 73,739 hours, 16,575 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.