# SDR YENA2023042100426

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2023
- Submitted: April 21, 2023
- Operation: Air carrier
- Aircraft: [N971JT](https://openairdocs.org/aircraft/N971JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 07390
- Aircraft time: 22,965 hours, 7,438 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: DE
- 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/YENA2023042100426

## Discrepancy

FLT#981, BOS-TPA. 'DESCENDING THROUGH 4,000 FEET, FA #4 REPORTED A VERY BRIEF DIRTY SOCK SMELL THAT DISSIPATED QUICKLY; BRIEFED FLT CREW AND INFLIGHT CREW. EXAMINED MX-270 AND DETERMINED ODOR LEVEL 1 TRANSCEINT DUE TO ENVIRONMENTAL SYSTEM ODORS. APU ALREADY DEFERRED UNDER MDDR# 506972 TO CORRECT THE CAUSE OF ODORS IN THE PAST. ODOR WAS NOT PRESENT. "COMPLIED WITH INFORMATION NOTICE 2017-T015 SECTION A ISOLATED TUPE 10,(A),1C PER TSM 05-50-00-810-085/B/TSM 05-50-00-800-085-D. THE AIRCRAFT IS OK FOR SERVICE.

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