# SDR CALA2026102620571

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2026
- Submitted: October 26, 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: 74,479 hours, 22,098 cycles
- Engine: Rroyce RB211535E4
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Fseu
- Part number: 285N001140
- Part serial: D03319
- Condition: Faulted
- Location: Flap/Slat Sys
- Part time: 64,729 hours, 20,586 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: F
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026102620571

## Discrepancy

TE FLAP DISSAGREE ICAS MSG. FLAPS STUCK JUST PAST 20 DEGREES LANDED FLAPS 20. EXTENDED FLAPS AND SLATS. PERFORMED GVI, NO DISCREPANCIES FOUND. FOUND FSEU 1 FAULT MSG. 305 FROM PREVIOUS FLIGHT LEG. UNABLE TO PERFORM GROUND TEST ON FSEU 1 DUE TO UNRESPONSIVE/FAULTY LRU.  FOUND FSEU 1 INTERMITTENTLY FAILING. R & R FSEU 1 IAW AMM 27-51-01. OPS CHKD GOOD. RAN FLAPS UP AND DOWN SEVERAL CYCLES WITH ELECTRIC HYDRAULICS AND ENG HYDRAULICS, NO FAULT FOUND.

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