# SDR CALA2025120711819

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2025
- Submitted: December 8, 2025
- Operation: Air carrier
- Aircraft: [N77430](https://openairdocs.org/aircraft/N77430), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 37098
- Aircraft time: 53,321 hours, 18,977 cycles
- Engine: Cfmint CFM567B263
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Odor
- Location: Nr 1
- Stage of operation: UK
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025120711819

## Discrepancy

ROTTEN ODOR FROM PACK SYSTEM, BELOW 19000 FEET WC 29-0572-8-0107 INSP EA 7200-02341, NR 1 ENGINE CORE WASH WAS PERFORMED ON ENGINE 1.  RESULTING IN ODOR. NO OTHER HISTORY NOTED OK TO CONTINUE.

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