Narrative:

Crew already on board preparing for the trip. Coming down the jet bridge I found the hallway full of exhaust. Arrived at the aircraft found it in the same condition. The amount of exhaust in the air had me concerned about carbon monoxide poisoning. Thought the smell was terrible I had no one complain about feeling ill. I did not detect any symptoms in myself. The first officer already had asked the ground personnel to turn off the ground based heater suspecting that was the cause of the problem. I opened the jet bridge door to help clear the fumes. I called station operations to advise them to have the unit checked. Having had some time to think this over next time confronted with this situation I'll call the fire department out as I am certain may have a way to check for carbon monoxide. The heading unit needs to be pulled from service until the problem is fixed.

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Original NASA ASRS Text

Title: An Air Carrier Captain expressed concern about carbon monoxide poisoning from ground equipment exhaust fumes in the jet bridge and aircraft during preflight.

Narrative: Crew already on board preparing for the trip. Coming down the jet bridge I found the hallway full of exhaust. Arrived at the aircraft found it in the same condition. The amount of exhaust in the air had me concerned about carbon monoxide poisoning. Thought the smell was terrible I had no one complain about feeling ill. I did not detect any symptoms in myself. The First Officer already had asked the ground personnel to turn off the ground based heater suspecting that was the cause of the problem. I opened the jet bridge door to help clear the fumes. I called Station Operations to advise them to have the unit checked. Having had some time to think this over next time confronted with this situation I'll call the Fire Department out as I am certain may have a way to check for carbon monoxide. The heading unit needs to be pulled from service until the problem is fixed.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.