# SDR SWAA2020101317524

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2020
- Submitted: October 13, 2020
- Operation: Air carrier
- Aircraft: [N498WN](https://openairdocs.org/aircraft/N498WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32480
- Aircraft time: 54,229 hours, 32,111 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Plate
- Condition: Corroded
- Location: Bs 440-500d
- 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/SWAA2020101317524

## Discrepancy

CORROSION, FWD CARGO COMP BILGE AREA.  LT ZEE CHANNEL SURFACE CORROSION AROUND SEVERAL FASTENER HOLES FROM STA 440 TO STA 500D, LBL 24 & WL 156.6.  REMOVED CORROSION FROM LT Z CHANNEL (SIDEPLATE) FROM STA 440 TO STA 500D, LBL 24, WL 208.1, PER B737-700 SRM 51-70-02-0G-0.  FOUND WITHIN LIMITS FROM STA 440 TO STA 500A AND FROM 500B TO 500D AND OUT OF LIMITS BETWEEN STA 500A & STA 500B, PER B737-700 SRM 53-00-53-1A-2.  REPAIRED AREA OUT OF LIMITS, PER B737-700 SRM 53-00-53-2R-5 AND 53-00-53-2R-6.

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