Posts: 378
Joined: Sat Apr 28, 2001 11:24 pm

Smell During Start Up..

Mon May 20, 2002 12:48 pm

i was on a KE A300-600R during a morning.. and during push back, there is a smell of like mayb burning or what... but like very carbon monoxide though.... why is that so? seems that i did not smell anything on other aircrafts.. only for that particular one.. and i was seated right at the rear of the cabin though... anyone knows whats that smell? and is the A300-600R the only aircraft that will give out such smell?
Posts: 1989
Joined: Mon Jul 10, 2000 4:51 am

RE: Smell During Start Up..

Mon May 20, 2002 12:53 pm

It is not unusual to get a smell of oil in the cabin on startup. It's nothing serious, and fairly common.
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Joined: Sat Apr 29, 2000 5:26 am

RE: Smell During Start Up..

Mon May 20, 2002 12:58 pm

Funny, I thought carbon monoxide was odorless and colorless. The smell you smelled was probably exhaust form the engines. The air that enters the cabin is ducted from the engines, cooled and air conditioned before it enters the cabin. It is very common for odors to be apparent in all phases of the operation of the airplane.

Hope this helps,

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RE: Smell During Start Up..

Mon May 20, 2002 1:05 pm

Either that or someone nearby had baked beans for breakfast. Big grin
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Joined: Sun May 13, 2001 4:35 pm

RE: Smell During Start Up..

Mon May 20, 2002 2:09 pm

That smell you smelled was not unusual. Many if not all planes emit that smell and it is further pronounced when seated next to or behind the engine. The two aircraft that I smell it the most are on the 767-300 and the DC9.
Its better to be on the ground wishing you were in the air than be in the air wishing you were on the ground. Fly safe!
lmml 14/32
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Joined: Tue Jan 30, 2001 2:27 am

RE: Smell During Start Up..

Mon May 20, 2002 3:17 pm

This can happen during start up when the apu inlet picks up engine exhaust. Also when taxiing closely behind larger aircraft. As a solution some pilots switch off the packs.
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RE: Smell During Start Up..

Mon May 20, 2002 3:34 pm

The air that enters the cabin is indeed ducted from the engines or from the APU (Auxiliary Power Unit). It comes from the High Pressure Compressor.(It's of course air that has not participated in the combustion process.) So inside the cabin the smell will be the same as close to the engine inlets. In flight this will normally be fresh, odourless air. On the apron however the outside apron-smell might of course enter the cabin! So on the ground a "strange" or kerosine-like smell is usually nothing to worry about. If the smell continues a while after take-off, then this is a matter that's worth looking into.
But very often passengers will mistake the odour from the bread in the oven or the perfume of an other passenger for a "strange" smell.
As already mentioned, carbon monoxide is odourless !