# SDR R61A20070009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 25, 2007
- Submitted: May 15, 2007
- Operation: Air carrier
- Aircraft: [N818MD](https://openairdocs.org/aircraft/N818MD), registered now
- Make and model: Emb ERJ 170-100SU
- Registry model: [EMB ERJ 170-100SU](https://openairdocs.org/model/embraer-erj-170-100su) (OpenAirDocs)
- Aircraft serial: 17000039
- Aircraft time: 7,353 hours, 5,070 cycles
- System (JASC): [3140 · Central Computers](https://openairdocs.org/jasc/3140)
- Part: Power Supply
- Part number: 70244401903
- Part serial: 04052022
- Condition: Inoperative
- Location: Nr 1 Mau
- Stage of operation: AP
- 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/R61A20070009

## Discrepancy

CREW REPORTED WHILE SETTING UP FOR APPROACH HAD MAU 1B FAIL ALONG WITH A SPOILER FAULT.  CREW DECLARED AN EMERGENCY FOLLOWED QRH PROCEDURES LANDED WITHOUT INCIDENCE.  MAINTENANCE WAS DISPATCHED TO A/C TROUBLESHOT AND FOUND MAU 1 POWER SUPPLY INOPERATIVE.  REMOVED AND REPLACED MAU 1 POWER SUPPLY, OPERATIONAL CHECK GOOD.  A/C WAS RETURNED TO SERVICE.

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