# SDR YENA2026072700626

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2026
- Submitted: July 28, 2026
- Operation: Air carrier
- Aircraft: [N2180J](https://openairdocs.org/aircraft/N2180J), registered now
- Make and model: Airbus A321-271N
- Registry model: [Airbus A321-271N](https://openairdocs.org/model/airbus-a321-271n) (OpenAirDocs)
- Aircraft serial: 11838
- Aircraft time: 9,801 hours, 1,806 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Odor
- Location: Nr 1
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2026072700626

## Discrepancy

FLT 1177, BOS-LAS.  DESCENDING THROUGH 16K CABIN ODOR (DIRTY SOCK) THROUGHOUT CABIN. STARTED APU.  ODOR SEEMED TO GO AWAY. AFTER LANDING ODOR RETURNED. USED APU BLEED. NO NOTICABLE IMPROVEMENT. MX SMELLED IT ON ACFT ON ARRIVAL.  C/W INFO NOTICE 2017-T01FL, DETERMINTED SOURCE OF ODOR TO BE FROM PACK 1, PACK 2 OPEREATES NORMALLY. NO ODOR. TYPE 5 ODOR DETERMINED. A/C OK FOR SVC.

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