What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Shortly after departure from Lambert st. Louis international airport (kstl), trans state airlines flight 5553 encountered a “bang” or “popping noise” from the back of the aircraft. Shortly afterwards, they experienced an influx of smoke to the cabin and the crew received a “bld 1 leak” [bleed 1 leak] warning message. The crew ran the bleed leak checklist which resulted in shutting down the number 1 engine. The flight attendant reported a burning smell in the cabin and smoke. The flight crew dropped the passenger oxygen masks. The flight crew did not don their flight deck oxygen masks. The crew declared an emergency and elected to evacuate the aircraft on the runway. No one was injured in the evacuation although one passenger was treated for asthma related problems at a local hospital.
As the FAA filed it
SHORTLY AFTER DEPARTURE FROM LAMBERT ST. LOUIS INTERNATIONAL AIRPORT (KSTL), TRANS STATE AIRLINES FLIGHT 5553 ENCOUNTERED A “BANG” OR “POPPING NOISE” FROM THE BACK OF THE AIRCRAFT. SHORTLY AFTERWARDS, THEY EXPERIENCED AN INFLUX OF SMOKE TO THE CABIN AND THE CREW RECEIVED A “BLD 1 LEAK” [BLEED 1 LEAK] WARNING MESSAGE. THE CREW RAN THE BLEED LEAK CHECKLIST WHICH RESULTED IN SHUTTING DOWN THE NUMBER 1 ENGINE. THE FLIGHT ATTENDANT REPORTED A BURNING SMELL IN THE CABIN AND SMOKE. THE FLIGHT CREW DROPPED THE PASSENGER OXYGEN MASKS. THE FLIGHT CREW DID NOT DON THEIR FLIGHT DECK OXYGEN MASKS. THE CREW DECLARED AN EMERGENCY AND ELECTED TO EVACUATE THE AIRCRAFT ON THE RUNWAY. NO ONE WAS INJURED IN THE EVACUATION ALTHOUGH ONE PASSENGER WAS TREATED FOR ASTHMA RELATED PROBLEMS AT A LOCAL HOSPITAL.