# SDR SIMA2020032019002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2020
- Submitted: March 25, 2020
- Operation: Air carrier
- Aircraft: [N900AE](https://openairdocs.org/aircraft/N900AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500885
- Aircraft time: 36,847 hours, 31,958 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Condition: Malfunctioned
- Location: Ac Bay
- Stage of operation: UK
- 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/SIMA2020032019002

## Discrepancy

SUPPLEMENTAL PACK #2 HAS A VERY UNUSUAL NOISE AND WAS FILLING THE CABIN WITH A BURNING TYPE ODOR-C/A-VERIFIED NOISE COMING FROM PACK #2 PERFORMED ENGINE RUN WITH CREW INDICATING PACK #1 NO SMELL NOTED. DEFERRED PACK #2 SYSTEM AUTH 030559D-C REF 21-30. COMPLIED WITH EO EM-2100-048. REMOVED AND REPLACED RH ACM AND RH DUAL HEAT EXCHANGER. PERFORMED OPERATIONAL TEST OF COOLING PACK SYSTEM IAW EMB 145 AMM 21-51-00. OPS/LEAK TEST GOOD.  NO DEFECTS NOTED. MEL ITEM RESTORED.

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