What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On 02/15/2003, at 18:18 local time, flight 6139 took off from Charlottesville, Virginia. On climb out the flight crew reported smoke in the cabin after turning on the environmental control systems (ecs). The oxygen masks were deployed and aircraft returned to the airport. Flight 6139 landed on runway 3 without incident and taxied to the gate. The flight attendant and one passenger were taken to a hospital for observation for smoke inhalation injuries. The dispatch release for flight 6139 lists the right side air-cycle machine heat exchanger (hx) fan as deferred per MEL 21-54-00. This rendered the right environmental control system inoperative on the ground. The aircraft had been deiced prior to departure with the APU running. On 02/18/2003, the inoperative fan was removed from its mount, glycol was found in the heat exchanger inlet. A serviceable hx fan was installed and both ecs were operated off of APU bleed air and engine bleed air. The right ecs produced a glycol odor but did not emit smoke. The glycol odor was more pungent when the right ecs was operated off of APU bleed air. After operating the ecs for 10 minutes the odor was gone.
As the FAA filed it
(-23) ON 02/15/2003, AT 18:18 LOCAL TIME, FLIGHT 6139 TOOK OFF FROM CHARLOTTESVILLE, VIRGINIA. ON CLIMB OUT THE FLIGHT CREW REPORTED SMOKE IN THE CABIN AFTER TURNING ON THE ENVIRONMENTAL CONTROL SYSTEMS (ECS). THE OXYGEN MASKS WERE DEPLOYED AND AIRCRAFT RETURNED TO THE AIRPORT. FLIGHT 6139 LANDED ON RUNWAY 3 WITHOUT INCIDENT AND TAXIED TO THE GATE. THE FLIGHT ATTENDANT AND ONE PASSENGER WERE TAKEN TO A HOSPITAL FOR OBSERVATION FOR SMOKE INHALATION INJURIES. THE DISPATCH RELEASE FOR FLIGHT 6139 LISTS THE RIGHT SIDE AIR-CYCLE MACHINE HEAT EXCHANGER (HX) FAN AS DEFERRED PER MEL 21-54-00. THIS RENDERED THE RIGHT ENVIRONMENTAL CONTROL SYSTEM INOPERATIVE ON THE GROUND. THE AIRCRAFT HAD BEEN DEICED PRIOR TO DEPARTURE WITH THE APU RUNNING. ON 02/18/2003, THE INOPERATIVE FAN WAS REMOVED FROM ITS MOUNT, GLYCOL WAS FOUND IN THE HEAT EXCHANGER INLET. A SERVICEABLE HX FAN WAS INSTALLED AND BOTH ECS WERE OPERATED OFF OF APU BLEED AIR AND ENGINE BLEED AIR. THE RIGHT ECS PRODUCED A GLYCOL ODOR BUT DID NOT EMIT SMOKE. THE GLYCOL ODOR WAS MORE PUNGENT WHEN THE RIGHT ECS WAS OPERATED OFF OF APU BLEED AIR. AFTER OPERATING THE ECS FOR 10 MINUTES THE ODOR WAS GONE.