# SDR SWAA2020080700166

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2020
- Submitted: August 7, 2020
- Operation: Air carrier
- Aircraft: N720WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27854
- Aircraft time: 74,929 hours, 44,674 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Condition: Corroded
- Location: Cargo Threshold
- 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/SWAA2020080700166

## Discrepancy

CORROSION FORWARD CARGO BAY DOOR CUTOUT THRESHOLD SUB WEB AT BS 440 - 494,  WL 154,  RBL 25.   REMOVED FCB SUB THRESHOLD WEB IAW SRM 51-40-02. OUT OF LIMITS IAW SRM 53-30-15-1A-1. ORIG; MAT'L THICKNESS .045. REMAINING THICKNESS .033 AFTER CORROSION REMOVAL IAW SRM 51-10-02.  LOCATED,  DRILLED, AND INSTALLED A NEW WEB IAW SRM 51-40-02,  DWG. 143A8330, AND DWG 143A8120.

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