What was found
During "L" check found crack on the upper chord at the rear engine mount bulkhead NAC station 222 number one pylon. Repaired per EA 66-180413.
- Difficulty date
- November 20, 2000
- Submitted
- January 3, 2001
- Operation
- Air carrier
- Aircraft
- N622US
- Make and model
- Boeing 747251B
- Aircraft serial
- 21704
- Aircraft time
- 83,208 hours, 13,820 cycles
- System (JASC)
- 5412 · Nacelle/Pylon, Bulkhead/Firewall
- Part
- Chord
- 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.