# SDR GLBA2017092500684

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2017
- Submitted: September 25, 2017
- Operation: Air carrier
- Aircraft: N96ZK
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120096
- Aircraft time: 47,757 hours, 49,198 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Line
- Condition: Disconnected
- Location: Pneumatic
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GLBA2017092500684

## Discrepancy

PILOTS REPORTED THAT THE NR 1 PACK FAILED IN FLIGHT AND THERE WAS SMOKE IN THE CABIN.  MAINTENANCE PERFORMED AN OPS CHECK OF THE LEFT PACK, COULD NOT DUPLICATE DISCREPANCY.  TROUBLESHOT FURTHER AND FOUND A PNEUMATIC LINE DISCONNECTED FROM TEST PORT AT LEFT HEAT EXCHANGER. CONNECTED THE LINE TO TEST PORT IAW MM 21-50-03 (4), (B), (3).  OPS CHECKED GOOD IAW MM 21-50-00.

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