# SDR MASA200500234

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2005
- Submitted: April 11, 2005
- Operation: Air carrier
- Aircraft: N827MJ
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145217
- Aircraft time: 10,949 hours, 10,091 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 4501968C
- Part serial: SPE994212
- Condition: Failed
- Location: Apu Bay
- Part time: 7,312 hours, 9,566 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MASA200500234

## Discrepancy

SMOKE IN THE CABIN PRIOR TO THE FIRST FLIGHT OF THE DAY.  MX TROUBLESHOT FAULT AND OPERATED ENG NR 2 WITH BOTH PACKS AND FOUND THAT THE SMOKE WAS CAUSED BY THE APU.  MX RE-OPENED THE MEL FOR THE APU 3/23/05.  MAINTENANCE REPLACED THE APU.

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