DURING DEPARTURE CLIMBOUT WITH APU OFF CREW DETECTED AN EXHAUST/OILY SMELL WITH NO SMOKE INDICATED IN THE AIRCRAFT. ON POST FLIGHT WITH APU RUNNING, ODOR PERSISTS. ATTEMPTED TO DUPLICATE ODOR USING APU, LT ENG, & RT ENG. ODOR COULD NOT BE DUPLICATED. BORESCOPE OF THE APU INLET COMPRESSOR. NO FINDINGS. MCC HAS ELECTED TO REPLACE ACM MUFFLER & CONDENSER OUTLET DUCT. TECHS REMOVED SUSPECT ACM MUFFLER AND ACM CONDENSER OUTLET DUCT AND INSTALLED RECEIVED CUSTOMER PROVIDED K-BALL UNITS. PERFORMED LEAK CHECKS WITH NO LEAKS NOTED. TECHS ALSO VERIFIED NO ABNORMAL SMELLS IN THE COCKPIT OR CABIN. ALL WORK IS DONE WITH REFERENCE TO AMM 21-50-65 AND 21-50-77.
| Incident date | March 23, 2026 |
|---|---|
| Airline | HNAA |
| Flight | AMM21 |
| Aircraft | EMB EMB145LR |
| Registration | N663AR |
| Affected area | Cockpit |
| Event type | Fumes or Odor |
| Verification | Official |
Sources
- FAA SDR: HNAA fumes or odor report on 2026-03-23 (external.apic4e.faa.gov)
- FAA SDR: VNAA fumes or odor report on 2026-03-23 (external.apic4e.faa.gov)
- FAA SDR: AALA fumes or odor report on 2026-03-22 (external.apic4e.faa.gov)
- FAA SDR: DXTA fumes or odor report on 2026-03-22 (external.apic4e.faa.gov)
This entry summarizes publicly reported information and links to the original reporting or official record. Details can change as authorities and operators release additional information.