# SDR 7GMB2014072111771

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 16, 2014
- Submitted: July 21, 2014
- Operation: Air carrier
- Aircraft: N286HF
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 14501177
- Aircraft time: 1,102 hours, 812 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 4504113A
- Part serial: SPE1328147
- Condition: Failed
- Location: Apu Bay
- Part time: 608 hours, 1,374 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/7GMB2014072111771

## Discrepancy

WHILE ON THE RAMP, APU SHUT DOWN UNCOMMANDED.  THE APU WAS DEFERRED IAW MEL.  TROUBLE SHOT APU FIM & REPLACED FUEL CONTROL UNIT PN 4504616B, BUT IT DIDN'T FIX THE PROBLEM.  INSPECTED APU CHIP DETECTOR & FOUND A MOUND OF METAL ON IT.  PLACED AN ORDER FOR APU UNIT & LT THE APU ON MEL.

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