# SDR SWAA2019110738674

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2019
- Submitted: November 7, 2019
- Operation: Air carrier
- Aircraft: N704SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27838
- Aircraft time: 75,731 hours, 46,057 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Bs 765-780
- 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/SWAA2019110738674

## Discrepancy

AFT CARGO WL156 STA.765 TO STA.780 STR.25L "Z" CHANNEL HAS CORROSION NUMEROUS PLACES. / AFT CARGO LH Z CHANNEL CORROSION FOUND AT STA 765-780  STR25L WL156 REMOVED IN AN AREA OF 1" X 1" MEASURES  .020" DEEP, OUT OF LIMITS PER SRM 53-00-53-1A-2. REMOVED AND REPLACED AFT CARGO LH Z CHANNEL ASSY IAW SRM 51-40-02-0G-0 AND DWG 146A7500.

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