# SDR SIMA201903276001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2019
- Submitted: April 5, 2019
- Operation: Air carrier
- Aircraft: [N689EC](https://openairdocs.org/aircraft/N689EC), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500853
- Aircraft time: 35,671 hours, 31,070 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Dirty
- Stage of operation: NR
- 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/SIMA201903276001

## Discrepancy

SUPPLEMENTAL PACKS SMELL DIRTY, ENGINE BLEEDS SUPPLYING AIR ON TAXI + APU SUPPLYING AIR AT GATE STILL SMELLED UNDER THOSE CONDITIONS. "TRANSFERRED TO NRWC 689-ORD-03890"-C/A-C/W ETN# ETN-EM-72-034, DEFERRED PACK 1. T/S PACK 1 DIRTY SMELL PER FIM 21-20-00-810-801-A TO STEP 36, INSPECTED #1 RECIRCULATION SYSTEM  FOUND NO DEFECTS NOTED IAW EMB AMM 21-24-02 REQUIRES FURTHER T/S MEL REMAINS OPEN. REMOVED AND REPLACED PACK VALVE #1 FILTER, OPC LEAK CHECK GOOD, IAW EMB AMM 21-51-01 RAN PACK FOR 2+ HOURS WITH NO SMELL NOTED. MEL RESTORED

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