# SDR CALA2025113011583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 28, 2025
- Submitted: December 1, 2025
- Operation: Air carrier
- Aircraft: [N37464](https://openairdocs.org/aircraft/N37464), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 41745
- Aircraft time: 40,811 hours, 15,019 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Condition: Odor
- Location: Zone 100
- 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/CALA2025113011583

## Discrepancy

DUE TO SMOKE ODOR ON AFT LAV E, RECIRCULATION AIR FILTERS REPLACEMENT IS REQUIRED BY TOMC REQUEST. REF AMM: 05-51-26-800-801-C1. STEP 1.E(1. B). PLEASE INCLUDE FILTER REPLACEMENT AND INSPECTION COMPLETION ON LP: # 7097376 PRIOR TO SIGN OFF. MATERIAL ADDED. RECIRCULATION AIR FILTERS REMOVED AND INSTALLED. REF AMM 21-25-01PARTS USED:  29-2124-3-0006, QTY :1

---
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.