# SDR SWAA2024040560486

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2024
- Submitted: April 5, 2024
- Operation: Air carrier
- Aircraft: [N7731A](https://openairdocs.org/aircraft/N7731A), registered now
- Make and model: Boeing 737-76N
- Registry model: [Boeing 737-76N](https://openairdocs.org/model/boeing-737-76n) (OpenAirDocs)
- Aircraft serial: 32677
- Aircraft time: 55,832 hours, 28,606 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: UNKNOWN
- Condition: Corroded
- Location: Bs 312
- 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/SWAA2024040560486

## Discrepancy

CORROSION ON FLOOR INTERCOSTAL AT STA 312+5; LBL 12; WL 208.1<[01] REMOVED CORROSION ON INTERCOSTAL AT BS 312+5 LBL 12 WL 208 L=2.2 W=.80 D= .027 MATERIAL ORIGINAL THICKNESS .080 MATERIAL REMAINING .053 FOUND TO BE OUT OF LIMITS PER SRM 53-10-51-1A-1 ALLOWABLE DAMAGE 1 . REMOVED AND REPLACED THE DAMAGED FLOOR INTERCOSTAL BETWEEN BS 312 AND BS 328 WL 208.1 IAW SRM 51-40-02 AND DWG # 141A5400;[02] VERIFIED RII CORRECTIVE ACTION ITEM 1; CARD COMPLETE.

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