# SDR CALA2025091208840

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2025
- Submitted: September 12, 2025
- Operation: Air carrier
- Aircraft: [N787UA](https://openairdocs.org/aircraft/N787UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26939
- Aircraft time: 111,823 hours, 14,912 cycles
- System (JASC): [2780 · Leading Edge Slat Control System](https://openairdocs.org/jasc/2780)
- Part: Controller
- Part number: 285W02193
- Part serial: D00039
- Condition: Faulted
- Location: Flap Slats
- Part time: 805,661 hours, 713,977 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025091208840

## Discrepancy

FLAP/SLAT CONTROL 1 EICAS STATUS HIGH LIFT CONTROL LANE #1 HAS A FAULT. FIM TASK REF : FIM TASK REFERENCE NOT FOUND CMC MSG#  2728841.  REMOVED LEFT OPBC IAW AMM 23-93-01-000-801 INSTALLED NEW OPBC LEFT IAW AMM 23-93-01-400-801 UPTO STEP 3.G. INSTALLATION TEST TS PER FIM 27-51-TASK 842 MESSAGE NO LONGER ACTIVE. REF ELB 6234869 FOR REPLACEMENT OF LH OPBC.

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