# SDR ASAA2019040318868

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2019
- Submitted: April 3, 2019
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 46,399 hours, 13,809 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: P199753
- Condition: Dirty
- Location: Recirculation
- Stage of operation: CL
- 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/ASAA2019040318868

## Discrepancy

DIRTY SOCK SMELL ON INITIAL CLIMB FROM OMA. TURNED OFF RECIRC FANS, SMELL WENT AWAY. KEPT FANS OFF. GROUNDED - YES. ACCOMPLISHED F.I.M TASK 21-00 TASK 804. REMOVED AND REPLACED RECIRCULATION AIR FILTERS REF. AMM 21-25-01. FILTERS FOUND VERY DIRTY. PERFORMED OPERATIONAL TEST OF RECIRCULATION SYSTEM REF. AMM 21-25-00-710-802-002. OPS TEST GOOD. NO ODORS OR DIRTY SOCK SMELL NOTED. OK FOR SERVICE.

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