# SDR SWAA2022010641175

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 2021
- Submitted: January 6, 2022
- Operation: Air carrier
- Aircraft: N770SA
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 30589
- Aircraft time: 69,290 hours, 41,022 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Web
- Condition: Corroded
- Location: Fuselage
- Stage of operation: IN
- 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/SWAA2022010641175

## Discrepancy

E&E COMPARTMENT LOWER AUXILIARY SILL; S-23L FROM STA 330.62 TO STA 344 APPX. FOUND CORROSION ON WEB.  REMOVED WEB AT E/E COMPARTMENT LOWER AUXILIARY SILL IAW SRM 51-40-02-0G-0.  FOUND OUT OF LIMITS IAW SRM 53-10-15-1A-1.  LOCATED AND DRILLED NEW WEB AT E/E COMPARTMENT LOWER AUXILIARY SILL IAW SRM 51-40-05-0G-0 AND DWG 141A8131.

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