# SDR SIMA20190207003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 7, 2019
- Submitted: February 14, 2019
- Operation: Air carrier
- Aircraft: [N234JW](https://openairdocs.org/aircraft/N234JW), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000566
- Aircraft time: 6,970 hours, 4,744 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Condition: Contaminated
- Location: Ac B Ay
- Stage of operation: UK
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20190207003

## Discrepancy

FLT CREW & FA1 SMELLED WHAT SEEMED TO BE A BURNING SMELL. SUSPECT SMELL CONSIDERED ASSOCIATED WITH NR 2 PACK FAILURE. DEFERRED NR 2 PACK. RAM AIR INLET DOOR CONFIRMED OPEN. DURING TAXI IN FOR A/C OVERNIGHT MX AND OPC OF RT PACK WITH AMM 21-51-00, PACK2 FAIL CAUTION MSG POSTED ON EICAS. FAULT CODE 21516700AM1 AND FIM TASK 21-51-00-810-802-A. POSSIBLE INGESTION OF SUBSTANCE INTO RT ACM. OPERATED PACK 2 PER AMM 21-51-00, FAULT CODE 21516700AM2 DISPLAYED AND PACK 2 FAIL ON EICAS AND STRONG BURN ODOR ON THE COCKPIT. INSPECTED PACK 2 ACM AND DUAL HEAT EXCHANGERS PER AMM 21-51-05 AND AMM 21-51-04, FOUND RESIDUES OF COFFEE. RECOMMEND TO PERFORM CLEANING OF HEAT EXCHANGERS PER AMM 21-51-04. NO FURTHER DEFECTS NOTED. REMOVED AND REPLACED RT ACM IAW MM CH 25-51-05. OPC GOOD.

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