# SDR CALA2026011913084

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2025
- Submitted: January 20, 2026
- Operation: Air carrier
- Aircraft: [N77865](https://openairdocs.org/aircraft/N77865), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32589
- Aircraft time: 72,509 hours, 21,526 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Transition Panel
- Part number: 146N539124
- Condition: Corroded
- Location: Zone 100
- 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/CALA2026011913084

## Discrepancy

BULK CARGO, FLOOR AREA, BS 1520 , RT TRANSITION PANEL LOWER SURFACE HAS CORROSION.   PERFORMED REPAIR AT TRANSITION PANEL BS 1520 TO 1640 IAW  SRM 53-00-53-2R-2.

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