# SDR SWAA2022021500501

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2018
- Submitted: February 15, 2022
- Operation: Air carrier
- Aircraft: N777QC
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 30592
- Aircraft time: 63,466 hours, 37,367 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Web
- Condition: Corroded
- Location: Fwd Cargo Thresh
- 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/SWAA2022021500501

## Discrepancy

***CORROSION*** ON FWD CARGO BAY DOOR SURROUND SUB THRESHOLD; NUMEROUS AREAS; STA 440 TO 500;RBL 28 TO RBL 35; WL 158. / FWD CARGO BAY DOOR SURROUND SUB THRESHOLD WEB CORROSION WAS FOUND TO BE OUT OF LIMITS IAW SRM 53-30-15-1A-1; BLEND WAS 2' X 1' X .020'; ORIGINAL THICKNESS WAS .45' IAW SRM 53-30-15-1A-1. REMOVED AND REPLACED SUB THRESHOLD WEB IAW DRAWING 143A8330 & SRM 51-40-2

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