# SDR ASAA2023080544411

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2023
- Submitted: August 7, 2023
- Operation: Air carrier
- Aircraft: [N609AS](https://openairdocs.org/aircraft/N609AS), registered now
- Make and model: Boeing 737790
- Aircraft serial: 29752
- Aircraft time: 71,446 hours, 37,068 cycles
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Part number: 21BC126
- Condition: Faulted
- Location: Ecs Bay
- Stage of operation: AP
- 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/ASAA2023080544411

## Discrepancy

FA'S REPORTED A PUNGENT ODOR ON RECENT THROUGH APPROACH. ODOR WENT AWAY WHEN WE LANDED FA'S SAY IT WAS LEVEL 1 SEVERITY LEVEL. FWD CABIN, A FLIGHT ATTENDANT MID CABIN AND AFT. NO SMELL IN COCKPIT. GROUNDED - YES. REMOVED AND REPLACED AIR RE-CIRCULATION HEPA FILTER REF. AMM 21-25-01 AND THE WATER COALESCER BAG REF. AMM 21-51-05. OPS CHECK AND LEAK GOOD. NO UNUSUAL ODOR PRESENT.

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