# SDR FDEA202108071977

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2021
- Submitted: August 13, 2021
- Operation: Air carrier
- Aircraft: [N609FE](https://openairdocs.org/aircraft/N609FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48549
- Aircraft time: 88,741 hours, 21,411 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: ARB18783
- Condition: Cracked
- Location: Lt Wing Slat
- 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/FDEA202108071977

## Discrepancy

UPON REMOVAL OF LEFT HAND NUMBER 7 SLAT LOWER SKIN FOR REPAIR ACCESS, FOUND   LEFT HAND NUMBER 7 SLAT INTERNAL RIB CRACK AT STATION XOS 978.461. CRACK RIB REMOVED AS PER SRM 51-31-01-OG AND FABRICATED RIB PER DOUGLAS   DRAWING ARB1878 REVISION D. INSTALLED FABRICATED RIB AT LEFT HAND NUMBER 7 SLAT   INTERNAL AT STATION XOS 978.461 AS PER SRM 51-35-01-OG. REPAIR CLASSIFIED AS MAJOR   PER GMM 6-2-100.

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