# SDR ASMF201810159025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2018
- Submitted: October 15, 2018
- Operation: Air carrier
- Aircraft: N961AM
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 35306
- Aircraft time: 23,161 hours, 3,104 cycles
- System (JASC): [2711 · Aileron Tab Control System](https://openairdocs.org/jasc/2711)
- Part: Control Unit
- Part number: CA72711006
- Part serial: 06538
- Condition: Failed
- Location: Flight Control
- Part time: 6,643 hours, 754 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF201810159025

## Discrepancy

SPOLIER EMCU NO OUTPUT MSG ADVISORY
CAPTAIN REPORTED THAT DURING DESCENDS, MESSAGE SPOILER 27646100 WAS SHOWN. MAINTENANCE PERSONNEL PERFORMED FIM DMC-B787-A-27-60-F1-FHA-421A-A PROCEDURE, FINDING FAILURE OF SPOILER ELECTRIC MOTOR CONTROL UNIT PER MESSAGE “NO OUTPUT”; IT WAS REPLACED EMCU P/N: CA72711-006 S/N: 06538 IAW AMM B787-A-27-61-18-00A-520A/720A-A; TESTED CORRECT.

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