# SDR CALA2025102910682

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2025
- Submitted: October 29, 2025
- Operation: Air carrier
- Aircraft: [N26226](https://openairdocs.org/aircraft/N26226), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28935
- Aircraft time: 80,527 hours, 29,981 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 147A5660U3
- Condition: Corroded
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025102910682

## Discrepancy

MAIN CABIN AFT WET AREA BS 947-967, LBL 24, INTERCOSTAL HAS CORROSION,  REPAIR IS CLASSIFIED AS MAJOR,  REPLACED IAW SRM 51-40-02 AND DRAWING 147A5650, REV C. REMOVED DAMAGE IAW SRM 53-70-51. ORIGINAL THICKNESS .080 MAT LOSS 0.060. FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51. LOCATED AND DRILLED NEW INTERCOSTAL IAW DRAWING 147A5650, REV C.  INSTALLED NEW INTERCOSTAL IAW DRAWING 147A5650 AND SRM 51-40-02.

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