# SDR SWAA2022051295668

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2022
- Submitted: May 13, 2022
- Operation: Air carrier
- Aircraft: [N249WN](https://openairdocs.org/aircraft/N249WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34951
- Aircraft time: 52,991 hours, 31,698 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Part number: 146A750227
- Condition: Corroded
- Location: Aft Cargo Bay
- 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/SWAA2022051295668

## Discrepancy

AFT CARGO L/H Z CHANNEL HAVE MULTIPLE CORROSION EVIDENCE AROUND THE HOLES FASTENER FROM STA 727 TO STA 847. / [01] REMOVED CORROSION AFT CARGO COMP Z CHANEL L/H FROM STA 727 TO STA 847;[02] CORRECTION: REMOVED CORROSION AFT CARGO COMP Z CHANEL L/H FROM STA 727 TO STA 847 AS PER B737 SRM 51-10-02-0G-0.;[03] VERIFIED STEP 1 AND 2.;[04] EVALUATED REWORKED AREA AT AFT CARGO COMP. L/H Z CHANNEL;CORROSION PASS THRU ALONG Z CHANNEL FROM STA 727 TO STA 847. FOUND OUTS OF LIMITS PER REF B737-700 SRM 53-00-53-1A-2.;[05] VERIFIED STEP 4.;[06] RECEIVED NEW ZEE CHANNEL FROM STA 727 TO STA 847 L/H AFT CARGO COMP. INSTALLATION OF THIS ZEE CHANNEL IS ACCOMPLISHED ON CARD.(TTG8Q004D650).;[07] REMOVED CORROSION AFT CARGO COMP ZEE CHANEL;EVALUATED REWORKED AREA AT ZEE CHANNEL;CORROSION PASS THRU;FOUND OUT OF LIMITS;RECEIVED NEW ZEE CHANNEL FROM STA 727 TO STA 847 L/H AFT CARGO COMP. INSTALLATION OF THIS ZEE CHANNEL IS ACCOMPLISHED ON CARD.(TTG8Q004D650). PER REF B737-700 SRM 53-00-53-1A-2.;[08] VERIFIED STEP 6 AND 7.

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