# SDR FDEA202506100874

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2025
- Submitted: June 10, 2025
- Operation: Air carrier
- Aircraft: [N521FE](https://openairdocs.org/aircraft/N521FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48478
- Aircraft time: 91,548 hours, 17,992 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Cracked
- Location: Zone 500
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202506100874

## Discrepancy

LEFT WING - FIXED LEADING EDGE RIB DOUBLER AT STATION XOS 789 FOUND CRACK ABOUT 2 INCH.   LT WING FIXED LEADING EDGE CRACKED RIB DOUBLER AT STATION XOS 789 REMOVED IAW SRM 51-33-01-0G AND FABRICATED RIB DOUBLER IAW DRAWING ARB3954 REV K.   INSTALLED FABRICATED RIB DOUBLER IAW SRM 51-33-01-0G. REPAIR CLASSIFIED AS MAJOR IAW GMM 6-2-100.

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