# SDR SIMA20171205002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2017
- Submitted: December 6, 2017
- Operation: Air carrier
- Aircraft: [N918AE](https://openairdocs.org/aircraft/N918AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500902
- Aircraft time: 31,837 hours, 26,907 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 8152403
- Part serial: 200307025
- Condition: Seized
- Location: Ac Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20171205002

## Discrepancy

WHILE CRUISING AT FL250 SMOKE WAS SMELLED IN COCKPIT THE FOLLOWED BY SMOKE ENTERING THE COCKPIT VIA OVERHEAD VENTS. PERFORMED RUNS AND PACK SYSTEMS TROUBLESHOOTING AND FOUND THAT NR 1 PACK SYSTEM ACM IS CEASED UP. DEFERRED NR 1 AC PACK SYSTEM REF 21-30 AUTH 120090D-C.  REMOVED AND REPLACED L/H ACM,  IAW EMB AMM 21-51-03.

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