# SDR GTIA2019030103202

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2019
- Submitted: March 4, 2019
- Operation: Air carrier
- Aircraft: [N681NK](https://openairdocs.org/aircraft/N681NK), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7908
- Aircraft time: 4,613 hours, 1,944 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Condition: Contaminated
- Location: Apu Bay
- 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/GTIA2019030103202

## Discrepancy

HEAVY MUSTY DIRTY SOCK SMELL COMING FROM AIR VENTS-INSPECTED APU COM/AREA FOUND HEAVY APPLICAION OF DE-ICE FLUID APU AIR INTAKE. RAN NR 1 & NR 2 ENGS WITH PACKS FOR 10 MIN. USING XTERNAL AIR START NO DIRTY SOCKS OR ADVERSE SMELL. AIR QUALITY NORMAL. MX IAW 71-00-00 XFERED APU TO DMI(SEE BELOW)

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