# SDR CALA2026091819531

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2026
- Submitted: September 18, 2026
- Operation: Air carrier
- Aircraft: [N69835](https://openairdocs.org/aircraft/N69835), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 60087
- Aircraft time: 37,344 hours, 13,875 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 21FA407G
- Condition: Odor
- Location: Zone 200
- Stage of operation: NR
- 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/CALA2026091819531

## Discrepancy

RECIRC FILTERS REQUIRE REPLACEMENT DUE TO SMOKE ODOR.  REMOVED AND REPLACED LEFT AND RIGHT RECIRCULATION AIR FILTERS IAW AMM 21-25-01/401.

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