# SDR YENA2026080300645

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2026
- Submitted: August 4, 2026
- Operation: Air carrier
- Aircraft: [N2180J](https://openairdocs.org/aircraft/N2180J), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11838
- Aircraft time: 9,877 hours, 1,820 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Contaminated
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: C, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2026080300645

## Discrepancy

FLT 1833, BOS-SFO. STRONG MUSTY ODOR UPON TAKEOFF ODOR ISOLATION DISTINGUISHED PACK 1 ODOR IMPROVED WITH PACK 1 OFF YET DID NOT COMPLETELY GO AWAY 2 FLT ATTENDANTS HAD MILD IRRITATION AIRWAY LEVEL 2 EVENT.ODOR RETURNED ON DESCENT AND CABIN WITH PACK 1 OFF APU OFF NOT AS STRONG BUT DEFINITE MUSTY SMELL. ; CW INFO NOTICE 2017-T015M AND PERFORMED A LEVEL 2 ACS DECONTAMINATION. IDENTIFIED ODOR COMING FROM PACK 1 DECONTAMINATION LEVEL 2 WAS ACCOMPLISHED PER AMM 21-00-00-615-803-A PACK 1 AND APU DEFERRED ON LOGPAGE 4556640 ITEM 1 AND 2.REFERENCE LOGPAGE 4556637 ITEN 1 PACK 1 AND APU DEFERRED ON LP 4556640 ITEM 1 AND 2. ITEM PLACED ON MEL 49-10-01B CAT C MCC ROLAND NOTIFIED, DISPATCH NOTIFIED, MX-4 UPDATED, PLACARD INSTALLED, ACT FUEL TRANSFER TO CENTER TANK ACCOMPLISHED PER MEL 49-10-01B. OPEN

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