Sonali Tiwary—
An American Eagle regional flight from St. Louis, bound for Philadelphia, turned back to Lambert Airport on Saturday morning after passengers reported an unusual odor and oxygen masks dropped. All passengers and crew evacuated safely. No injuries were reported.
Flight 5089, operated by PSA Airlines on a Bombardier CRJ-900 registered N574NN, departed St. Louis Lambert International Airport at approximately 8:13 a.m. after a delay of more than two hours caused by engine-start problems. Approximately 15 minutes into the flight, the crew declared an emergency. Passengers reported a loud bang, an apparent drop in altitude, and an unusual odor. Oxygen masks dropped.
The aircraft returned to Lambert and landed without incident. Passengers evacuated using the overwing emergency exits. Emergency crews met the aircraft on the runway. No injuries were reported among passengers or crew.
What Passengers Reported
Passengers described haze in the cabin and an unusual odor before the masks dropped. American Airlines, which markets American Eagle regional routes and operates the service through PSA Airlines, said the flight turned back because of a reported odor. The airline has not disclosed a cause. What to do if your flight declares an emergency: a passenger guide
Where the Aircraft Went Next
The aircraft was subsequently ferried to Knoxville, Tennessee. Aircraft involved in in-flight emergencies are typically taken out of service for thorough inspection before returning to operation. PSA Airlines has not commented publicly on the incident.
What Travelers Need to Know
American Airlines has not issued any fleet-wide advisory related to this incident. The CRJ-900 is a widely used regional aircraft. Individual in-flight events of this type typically involve a single aircraft and a specific technical issue rather than a broader fleet concern, though any formal determination awaits investigation. Regional airline safety and how FAA oversight works for American Eagle partners
Passengers booked on American Eagle regional flights can find the operating carrier listed on their booking. American Airlines confirmed the flight returned to St. Louis and that affected passengers were accommodated on alternate flights.
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