# SDR FDEA202603190358

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2026
- Submitted: March 20, 2026
- Operation: Air carrier
- Aircraft: [N939FD](https://openairdocs.org/aircraft/N939FD), registered now
- Make and model: Boeing 757-23A
- Registry model: [Boeing 757-23A](https://openairdocs.org/model/boeing-757-23a) (OpenAirDocs)
- Aircraft serial: 24528
- Aircraft time: 67,512 hours, 26,585 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Fseu
- Part number: 285N001132
- Part serial: D00895
- Condition: Failed
- Location: Z
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202603190358

## Discrepancy

UPON SELECTING FLAPS 25 RECEIVED A TE FLAP DISAGREE  EICAS. FLAP HANDLE WAS AT 25 BUT THE FLAPS WERE AT  20.   RAN QRH, RETRACTED FLAPS TO UP USING ALT  FLAPS AND DIVERTED TO HNL.   UNEVENTFUL FLAPS 20  LANDING USING ALT FLAPS.  EMERGENCY DECLARED.  INTERROGATED FLAP/SLAT SYSTEM, FOUND #2 FLAP SLAT  ELECTRONIC UNIT ASSEMBLY FAULTING DATA LINK INOP.  SWAPPED ELECTRONIC UNIT TO #3 POSITION AND FAULT  FOLLOWED.  REMOVED AND REPLACED FLAP SLAT  ELECTRONIC UNIT PER M.M. 27-51-01-2, ALL CHECK  NORMAL.  CYCLED FLAPS/SLATS UP AND DOWN MULTIPLE  TIMES, ALL CHECK NORMAL.

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