# SDR CALA2026011612993

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 2026
- Submitted: January 16, 2026
- Operation: Air carrier
- Aircraft: [N38473](https://openairdocs.org/aircraft/N38473), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 38702
- Aircraft time: 39,935 hours, 14,498 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 21FA407G
- Condition: Dirty
- Location: Zone 100
- Stage of operation: TO
- 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/CALA2026011612993

## Discrepancy

ON OPENING POWER FOR TAKEOFF GOT SMOKE IN  COCKPIT MOMENTARILY.  INSPECTED ENTIRE AIRCRAFT IAW AMM 05-51-26 NO DEFECTS NOTED AT THIS TIME PERFORMED HIGH POWER ENGINE RUNS IAW AMM 71-00-00 NO EVIDENCE OF A SMOKE ODOR . R & R BOTH HEPA FILTERS REF 21-25-01.

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