# SDR SWAA2022012759863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2022
- Submitted: January 27, 2022
- Operation: Air carrier
- Aircraft: [N7750A](https://openairdocs.org/aircraft/N7750A), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 36716
- Aircraft time: 44,331 hours, 22,434 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Condition: Corroded
- Location: Bs 481-480
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022012759863

## Discrepancy

CORROSION ON SUBTHRESHOLD WEB AT FWD CARGO BAY RBL28 BS451; BS454; BS460; BS471; BS480. MARKED. ; / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 465 REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.045' FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1 USING ATS TOOL ID ATS1225 S/N UNKNOWN; [02] VERIFIED APPLICABILITY OF SRM 53-30-15-1A-1 AND DAMAGE FOUND TO BE OUT OF LIMITS; [03] LOCATED AND DRILLED NEW SUBTHRESHOLD WEB AT FWD CARGO BAY BS 440 TO 480+12' PER SRM 51-40-05-0G-0 AND DWG 143A8330; [04] VERIFIED CORRECTIVE ACTION 3.

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