# SDR CALA2026070617563

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 1, 2026
- Submitted: July 6, 2026
- Operation: Air carrier
- Aircraft: [N75425](https://openairdocs.org/aircraft/N75425), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33460
- Aircraft time: 55,343 hours, 19,813 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 21FA407G
- Condition: Clogged
- Location: Zone 100
- Stage of operation: NR
- How discovered: O
- Nature of condition: C, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026070617563

## Discrepancy

STRONG SMELL OF GAS/ KEROSENE IN BACK OF PLANE AND ALSO ENTIRE CABINREPT BY FLT ATTS. PHOTO OF SMOKE/ODOR IN CABIN QUESTIONAIR BELOW. M&E: 00-0703-3-1794, FORM #: 46-6020. PERFORMED AMM TASK 05-51-26-800-801-C1 FOR ODOR CONDITIONAL INSPECTION. ENGINE AND APU RUN AND PACK CHECKS COMPLETE. NO ODOR DETECTED. REF L/P 9463300; CHANGED BOTH RECIRC FILTERS.

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