AIRCRAFT WAS GROUNDED: ON TAKEOFF TILL ABOUT 5000 FEET THERE IS A MUSTY DIRTY SOCK ODOR IN THE FLIGHT DECK AND CABIN. SMELL CLEARS UNTIL DESCENDING BACK THROUGH ABOUT 5000 FEET. THEN ODOR RETURNED TILL LANDING. ACCOMPLISHED SOF J/C 08L00021001, FOUND LEFT PACK SECONDARY HEAT EXCHANGER CRACKED. REMOVE AND REPLACED LEFT SECONDARY HEAT EXCHANGER. PER J/C 08L13121001, PURGE AIR FROM AIR CONDITIONING DUCTS, NO ADDTIONAL ODORS NOTED.
| Incident date | March 11, 2025 |
|---|---|
| Airline | AALA |
| Aircraft | BOEING 737823 |
| Registration | N901AN |
| Affected area | Engine |
| Event type | Fumes or Odor |
| Verification | Official |
Sources
- FAA SDR: AALA fumes or odor report on 2025-03-11 (external.apic4e.faa.gov)
- FAA SDR: AALA fumes or odor report on 2025-03-11 (external.apic4e.faa.gov)
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