# SDR FDEA202604180469

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2026
- Submitted: April 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: 67,543 hours, 26,652 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Fseu
- Part number: 285N001140
- Part serial: D02022
- Condition: Failed
- Location: Flap Sys
- Stage of operation: LD
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202604180469

## Discrepancy

WHILE CONFIGURING FOR LANDING, AS WE SELECTED FLAPS 25, WE RECEIVED A TE FLAPS DISAGREE ON EICAS.  INDICATOR REMAINED AT FLAPS 20.  COMPLIED WITH QRH. RETRACTED FLAPS USING ALTERNATE METHOD. UNEVENTFUL  LANDING IN HNL. EMERGENCY DECLARED.   RAN FLAPS THROUGH FULL TRAVEL NUMEROUS TIMES IAW AMM 27-51-00-2. NO SIGNS OF   BINDING, ASSYM, TRIPPED INDICATORS, OR ANY OTHER ABNORMALITIES. DID NOT RECEIVE TE   FLAP DISAGREE MESSAGE. BOTH LEFT AND RIGHT FLAP POS NEEDLES MOVE IN SYNC. UPON   FURTHER T/S, WHEN FLAP HANDLE SET TO 25 AND FLAPS TRANSITIONING FROM 15 TO 20 DEGREES, FLAP ISLN VALVE STATUS MESSAGE APPEARED. TROUBLESHOT IAW FIM 27-51 FT 818.  R & R FSEU 1 IAW AMM 27-51-01-2. PERFORMED PERFORMED TEST ON FSEU 1. TESTS GOOD WITH NO EXISTING FAULTS NOTED. RAN FLAPS THROUGH FULL TRAVEL SEVERAL TIMES WITH NO STATUS OR EICAS MESSAGES PRESENT. NO EXISITING FAULTS ON FSEU 1, 2,  OR 3 AT THIS TIME. A/C OK FOR SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.