What was found
WHILE IN FOR C-CHECK, AT AMS, MAINTENANCE REPORTED, FOUND CRACKS IN STIFFENERS OF FRAME WEB UPPER CHORD AT B.S 1780 RBL AND LBL 14, AND B.S. 1740, RBL AND LBL 14. REPLACED STIFFENERS PER SRM 53-30-02.
- Difficulty date
- February 2, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N691UP
- Make and model
- Boeing 747121
- Aircraft serial
- 19641
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Stiffeners
- Condition
- Cracked
- Location
- Bs 1780/1740
- 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.