# SDR DALA2026012800665

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2026
- Submitted: January 28, 2026
- Operation: Air carrier
- Aircraft: [N858DZ](https://openairdocs.org/aircraft/N858DZ), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 31969
- Aircraft time: 31,020 hours, 12,035 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Condition: Clogged
- Location: Zone 100
- 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/DALA2026012800665

## Discrepancy

DURING DESENT AT OR NEAR IDLE POWER THROUGH 12000-10000FT, THERE WAS A CHEMICAL ODOR IN THE COCKPIT.  FOUND RECIRC FAN FILTERS COGGLED. R & R THE CABIN RECIRC FILTERS IAW AMM 21-25. NO ODORS PRESENT. OK FOR SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.