# SDR AALA20170106004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 2, 2017
- Submitted: January 6, 2017
- Operation: Air carrier
- Aircraft: [N822AN](https://openairdocs.org/aircraft/N822AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40642
- Aircraft time: 649 hours, 78 cycles
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Contactor
- Part number: B3822904
- Part serial: 530
- Condition: Faulty
- Location: Zone 200
- Stage of operation: UK
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20170106004

## Discrepancy

AIRCRAFT NOT GROUNDED. CENTER 2 ELECTRIC BRAKE POWER SUPPLY UNIT FAILURE MESSAGE RECEIVED. POWER SUPPLY PREVIOUSLY REPLACED WITH FAULTS INTERMITTENTLY REPEATING. REMOVED AND REPLACED CENTER 2 HOT BATTERY BUS POWER CONVERSION SYSTEM CONTACTOR IAW AMM DMC-B767-A-24-36-02-00A-720A-A. (CLOSED)

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