# SDR CALA2025090108304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2025
- Submitted: September 1, 2025
- Operation: Air carrier
- Aircraft: [N77538](https://openairdocs.org/aircraft/N77538), registered now
- Make and model: Boeing 737824
- Aircraft serial: 63694
- Aircraft time: 27,287 hours, 10,189 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 147A56603
- 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/CALA2025090108304

## Discrepancy

FOUND EXFOLIATED CORROSION AT SUPPORT INTERCOSTAL STA 948 LBL 27.25.   REMOVED AND INSTALLED NEW INTERCOSTAL AT AFT WET AREA STA 948 LBL 27.25 PER DRAWING 147A5650 AND SRM 51-40-02-0G-0.

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