# SDR CALA2026012713358

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2026
- Submitted: January 27, 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: 72,521 hours, 21,531 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 146N102890
- 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/CALA2026012713358

## Discrepancy

DURING C-CHECK, THREE CORROSION DAMAGES ON BS 1420 FRAME BOTTOM BETWEEN S29L & S30, S29R & S30 AND S28R & S29R. PERFORMED A REPAIR IAW 757-5360-13-A4238,

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