# SDR CALA2023021000394

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 9, 2023
- Submitted: February 10, 2023
- Operation: Air carrier
- Aircraft: [N58101](https://openairdocs.org/aircraft/N58101), registered now
- Make and model: Boeing 757-200 SERIES
- Registry model: [Boeing 757-200 SERIES](https://openairdocs.org/model/boeing-757-200-series) (OpenAirDocs)
- Aircraft serial: 27291
- Aircraft time: 108,460 hours, 23,247 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Transmission
- Part number: 251N42185
- Part serial: 0101
- Condition: Tripped
- Location: Lh I/B Flap I/B
- Part time: 108,459 hours, 23,247 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: F
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023021000394

## Discrepancy

TE FLAP DISAGREE BITE SFEU 1,2,3 REF FIM 27-51 TREE 805. SFEU 1,2&3 SHOWED NO EXISTING FAULTS. SFEU1 FAULT HISTORY LEG 0 REPORTED MSG # 305. SFEU2 FAULT HISTORY LEG 0 REPORTED MSG# 327. SFEU3 HAD NO FAULT HISTORY FOR LOG 0. TROUBLESHOT LH SIDE OF FLAP SYSTEM IAW FIM 27-51 FAULT TREE 805/808. FOUND #4 FLAP TRANSMISSION OVERLOAD INDICATOR POPPED.(REF LP 3800246 FOR MX).NO DEFECTS NOTED AT THIS TIME. TROUBLESHOT RH SIDE OF FLAP SYSTEM IAW FIM 27-51 FAULT TREE 805/808. NO DEFECT FOUND

---
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.