# SDR SWAA2023041213306

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2023
- Submitted: April 12, 2023
- Operation: Air carrier
- Aircraft: [N443WN](https://openairdocs.org/aircraft/N443WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29838
- Aircraft time: 65,630 hours, 38,789 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Condition: Corroded
- Location: Zn 100 Fus Lower
- 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/SWAA2023041213306

## Discrepancy

AFT CARGO DOOR CUTOUT LOWER WEB UPPER SURFACE CORROSION BETWEEN STA 794.3-847 RBL 25'<[01] EVALUATED AREA AT AFT CARGO DOOR CUTOUT LOWER WEB STA 794.3-847<BR>FOUND CORROSION EXFOLIATED OUT OF LIMITS PER SRM 53-60-15-1A-1<BR>RECEIVED; LOCATED AND DRILLED NEW AFT CARGO DOOR CUTOUT LOWER WEB STA 794.3-847 (PN: 146A8123-25) PO:1792296 PER SRM 51-40-05-0G-0<BR>TREATED AND PRIMED NEW FASTENER HOLES PER AMM 51-21-41-370-803 AND 51-21-72-370-804;[02] FINAL INSPECTION; VERIFIED STEP #1. ALL WORK PERFORMED.

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