# SDR SWAA2021122353576

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2021
- Submitted: December 27, 2021
- Operation: Air carrier
- Aircraft: [N910WN](https://openairdocs.org/aircraft/N910WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36618
- Aircraft time: 45,600 hours, 27,244 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Corroded
- Location: R/H Wing
- Stage of operation: UK
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021122353576

## Discrepancy

RT WING L/E SUPPORT RIB AT OFSS306 (SS 72.88) HAS CORROSION ON OUTER FACE COMMON TO O/B TAI DUCT. ; / [01] UPDATED MEASUREMENT SECTION; [02] UPDATED PARTS SECTION.; [03] REMOVED AND REPLACED RT WING L/E SUPPORT RIB AT OFSS306 (SS 72.88) IAW SRM 51-40-02-0G-0 STEPS 4 AND 7 AND DWG# 116A5300; [04] VERIFIED CORRECTIVE ACTION 3.

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