# SDR CALA2026051816340

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2026
- Submitted: May 18, 2026
- Operation: Air carrier
- Aircraft: [N15710](https://openairdocs.org/aircraft/N15710), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28780
- Aircraft time: 83,480 hours, 31,265 cycles
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Fseu
- Part number: 285A12002
- Part serial: 2747
- Condition: Faulty
- Location: Zone 100
- Part time: 56,450 hours, 20,658 cycles
- Stage of operation: DE
- 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/CALA2026051816340

## Discrepancy

FLAP ASYMMETRY WHILE  EXTENDING. LEFT FLAP STAYED AT 0. ACCOMPLISHED FSEU BITE, RESULTS MAINT MSG 27-81218 INTERMITENT. CYCLED FLAPS TWICE NO FAULTS NOTED. REF FIM 27-88 TASK 805.   REMOVED AND REPLACED FSEU IN REF TO AMM 27-51-01. OPS CHECK GOOD. NO EXISTING FAULTS. A/C OK FOR SERVICE.  REPLACED #7 SKEW SENSOR. REF AMM 27-59-01-000-802 AND AMM 27-59-01-400-802. PERFORMED FLAP SKEW DETECTION SYSTEM FUNCTIONAL TEST REFERENCE: TASK 27-59-00-730-801. FUNCTIONAL TEST PASSED.

---
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.