# SDR YENA20140104003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2014
- Submitted: January 6, 2014
- Operation: Air carrier
- Aircraft: N187JB
- Make and model: Emb ERJ 190-100 IGW
- Registry model: [EMB ERJ 190-100 IGW](https://openairdocs.org/model/embraer-erj-190-100-igw) (OpenAirDocs)
- Aircraft serial: 19000009
- Aircraft time: 22,612 hours, 13,986 cycles
- System (JASC): [2497 · Electrical Power System Wiring](https://openairdocs.org/jasc/2497)
- Part: Contactor
- Part number: 900CA01
- Part serial: 2380
- Condition: Failed
- Location: Nr Ac Buss
- Part time: 22,612 hours, 13,986 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: H, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA20140104003

## Discrepancy

CREW REPORTED AT 15,000 FT, DOWN TO EMERGENCY POWER.  LOSS OF POWER TO AC BUSS 1 AND DC BUSS 1.  STARTED APU,  WOULD NOT CONNECT TO AC BUSS 1.  HAD MULTIPLE EICAS MESSAGES WITH "AVNX MAU 1B FAIL".  AIRCRAFT DIVERTED.  R & R BUSS TIE CONTACTOR (BTC) 1 IAW AMM 24-51-07.  OPS CHECKED OK.  R & R SPDA AC POWER MODULE AS PRECAUTIONARY IAW AMM 24-51-13.

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