# SDR CALA2026100720208

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2026
- Submitted: October 7, 2026
- Operation: Air carrier
- Aircraft: [N78540](https://openairdocs.org/aircraft/N78540), registered now
- Make and model: Boeing 737824
- Aircraft serial: 63646
- Aircraft time: 27,717 hours, 10,452 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- 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/CALA2026100720208

## Discrepancy

REPORT FAINT MUSTY SMELL WHEN CLIMBING FROM 6000 FEET THROUGH 13000 FEET. SMELL WENT AWAY AND CAME BACK DESCENDING THROUGH 13000 FEET AND WENT AWAY AGAIN THROUGH 10000 FEET. REPLACED RECIRCULATION FILTER, FOWARD PIT LEFT HAND SIDE.  OPS CHECK NO SMELL.

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