# SDR HNAA2018032100064

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2018
- Submitted: March 21, 2018
- Operation: Air carrier
- Aircraft: [N617AE](https://openairdocs.org/aircraft/N617AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145093
- Aircraft time: 42,926 hours, 39,651 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Condition: Detached
- Location: Recirculation
- Stage of operation: IN
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2018032100064

## Discrepancy

WITH BOTH PACKS RUNNING ON APU,  THE NR 2 PACK WAS SELECTED OFF AND NR 1 PACK MADE AN ABNORMAL NOISE, THE FLT DECK FILLED WITH SMOKE AND ODOR.  INSPECTED, NO FUMES OR ODOR WITH THE NR 2 PACK.   FOUND THE RECIRCULATION FAN DUCT OFF,  REINSTALLED THE DUCT.  OPS CHECKED GOOD.  FOUND THE DUCT TO BE CHAFED.

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