MOLDLY OLD SOCK SMELL AT LOW ALTITUDES AND HIGH POWER SETTINGS OPERATED APU AND PACKS. NOTICED THERE WAS A STRONG OIL ODOR THROUGHOUT CABIN AND COCKPIT. PERFORMED FIM TASK 05-51-26-800-801-C1, SMOKE/ODOR IN FLIGHT DECK/ CABIN. FOUND RIGHT RECIRCULATION FILTER DIRTIER THAN LEFT, BUT SEEMED LIKE NORMAL DIRT AND NOT OIL CONTAMINATION. REPLACED BOTH FILTERS PER A.M.M. 21-25-01. RAN ENGINES AT 70% N1 WITH PACKS ISOLATED ON EACH SIDE FOR 10 MINUTES. ISOLATED APU BLEED DURING COOL DOWN. NO ODORS NOTED. REINSPECTED RECIRCULATION FILTERS AND FOUND NO CONTAMINATION. AIRCRAFT OKAY FOR SERVICE.
| Incident date | March 12, 2025 |
|---|---|
| Airline | CALA |
| Flight | AT70 |
| Aircraft | BOEING 737924ER |
| Registration | N73445 |
| Affected area | Cockpit |
| Event type | Fumes or Odor |
| Verification | Official |
Sources
- FAA SDR: CALA fumes or odor report on 2025-03-12 (external.apic4e.faa.gov)
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