# SDR SWAA2022020790927

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2018
- Submitted: May 12, 2022
- Operation: Air carrier
- Aircraft: N7725A
- Make and model: Boeing 737-76N
- Registry model: [Boeing 737-76N](https://openairdocs.org/model/boeing-737-76n) (OpenAirDocs)
- Aircraft serial: 32671
- Aircraft time: 39,006 hours, 18,379 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: None
- 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/SWAA2022020790927

## Discrepancy

SUPPLEMENTAL INFORMATION: ***CORROSION*** AT AFT CARGO BAY FLOOR TO SIDE WALL SUPPORT BS 727 TO 847 LBL 21 / REMOVED CORROSION AT ACB FLOOR TO SIDEWALL SUPPORT BS727-847 UBC 21 IAW SRM 51-10-02; ORIGINAL THICKNESS 0; 040'; MORE THAN 80% MATERIAL LOSS. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-52-1A-2. REMOVED AND REPLACED FLOOR TO SIDEWALL SUPPORT BS727-847 LBL 21 FABRICATED FROM BAC 1496-377 #7075T62 LOT # 1320987 IAW DWG 146A7502; DWG 146A7500; DWG 140A4500 AND SRM 51-40-02 89004U 15JAN18

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