# SDR SWAA2020102923320

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2020
- Submitted: October 29, 2020
- Operation: Air carrier
- Aircraft: [N266WN](https://openairdocs.org/aircraft/N266WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32523
- Aircraft time: 47,223 hours, 28,167 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Bs 259-270
- 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/SWAA2020102923320

## Discrepancy

CORROSION, FLIGHT DECK FLOOR STRUCTURE INTERCOSTAL SUPPORT CHANNEL BETWEEN STA 259.5 AND STA 270 WL 208.1 BL 0 SPOT OF CORROSION.  BARNISHED SURFACE CORROSION INTERCOSTAL STA 259.5 TO STA 270 WL 208.1 BL 0 ORGINAL MATERIAL 0.040, MATERIAL LOSS THAN 0.002, REMAINING MATERIAL 0.038, IAW B737-700 SRM 51-10-02/51-10-51-1A-1.  INTERCOSTAL SUPPORT CHANNEL BETWEEN LIMITS.  TREATED AND PRIMED, IAW B737-700 SRM 51-20-01 AND WORK INSTRUCTIONS NO 5310-1-14366-NG.

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