# SDR IPXA2017041016016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2017
- Submitted: April 12, 2017
- Operation: Air carrier
- Aircraft: [N442UP](https://openairdocs.org/aircraft/N442UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27387
- Aircraft time: 22,931 hours, 15,182 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cockpit
- Stage of operation: IN
- 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/IPXA2017041016016

## Discrepancy

DURING DECENT BRIEF ACRID SMELL OCCURRED. IT WAS NOT OVERWHELMING, BUT STRONG & LINGERED. RUN NR 1 & NR 2 ENG, OPERATED BOTH PACKS, NO STRONG SMELL NOTED AT THIS TIME MM 21-00-00.

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