# SDR CALA2026042315632

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2026
- Submitted: April 23, 2026
- Operation: Air carrier
- Aircraft: [N37255](https://openairdocs.org/aircraft/N37255), registered now
- Make and model: Boeing 737824
- Aircraft serial: 30610
- Aircraft time: 77,618 hours, 29,101 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- 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/CALA2026042315632

## Discrepancy

MAIN CABIN AFT WET AREA, INTERCOSTAL CORRODED ON UPPER SURFACE BETWEEN BS 947.5 AND 967 APPROX LBL-25 REMOVED, LOCATED, DRILLED AND INSTALLED NEW INTERCOSTAL REF SRM 51-40-05, DWG 147A5650 REV- AND SRM 51-40-02. REMOVED DAMAGE, ORIG .080, MATERIAL LOSS .020, REMAINING .060 FOUND OUT OF LIMITS REF B737NG SRM 53-20-51-1A-1.

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