# SDR SWAA2022053100802

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2022
- Submitted: May 31, 2022
- Operation: Air carrier
- Aircraft: [N479WN](https://openairdocs.org/aircraft/N479WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33990
- Aircraft time: 59,976 hours, 35,850 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- 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/SWAA2022053100802

## Discrepancy

L/H AFT CARGO COMPARTMENT FLOOR @ STA 727 - STA 757 STR 25L WL 160 Z CHANNEL HAS CORROSION IN SEVERAL AREAS. (18-042). REMOVED CORROSION AT L/H AFT CARGO COMPARTMENT STA727-STA757 STR25L WL160 Z CHANNEL; ASPER REF B737 SRM 51-10-02-0G-0 .FOUND EXFOLIATE CORROSION AS PER REF B737 SRM53-00-53-1A-2; REMOVED CORROSION AT L/H AFT CARGO COMPARTMENT STA727-STA757 STR25L WL160 Z CHANNEL; ASPER REF B737 SRM 51-10-02-0G-0 .FOUND EXFOLIATE CORROSION OUT OF LIMITS; AS PER REF B737 SRM53-00-53-1A-2; VERIFIED 4; RECEIVED NEW ZEE ASSY P/N 146A7502-51; NEW ZEE TO BE INSTALLED ON CUSTOMER BAR CODE TTG8Q00C62BG;

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.