# SDR SWAA2022021508334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2018
- Submitted: February 15, 2022
- Operation: Air carrier
- Aircraft: [N783SW](https://openairdocs.org/aircraft/N783SW), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29809
- Aircraft time: 62,745 hours, 36,856 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Web
- Part number: 143A812210
- 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/SWAA2022021508334

## Discrepancy

FWD CARGO DOOR CUTOUT; SILL PLATE HAS MULTIPLE AREAS OF CORROSION FROM STA 440 TO 492.  REMOVED CORROSION IAW SRM 51-10-02; OUT OF LIMITS IAW SRM 53-30-15-1A-1. REMOVED LOWER SILL WEB IAW B737 SRM 51-40-02. VERIFIED NEW WEB AS P/N 143A8122-10 PER DWG NO 143A8120 REV:A. LOCATED AND DRILLED IAW BOEING DWG ENG. DWG. NO 143A8120 REV:A; COUNTERSANK HOLES IAW B737 SRM 51-40-08; INSTALLED NUT PLATES IAW B737 SRM 51-40-02-0G-0. INSTALLED WEB IAW BOEING ENG DWG. NO. 143A8120 REV:A AND B737 SRM 51-40-02. APPLIED CIC IAW B737 AMM 51-21-91-620-8.   INSTALLED NUT PLATES IAW B737 SRM 51-40-02-0G-0. INSTALLED WEB IAW BOEING ENG DWG. NO. 143A8120 REV:A AND B737 SRM 51-40-02. APPLIED CIC IAW B737 AMM 51-21-91-620-802.

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