how is boeing 747 deiced on ground?

[IFLY_INDIGO]

out of curiosity, I would like to know how is Boeing 747 deiced on ground in very cold places?

[SloppyJoe]

The same way an A320 is?

[grounded27]

Wash her down like a cow. Don't spray the eyes.

[mr.newfy]

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSe5WlS5Q9aHeSpifXKKoU402EweJ2QQD92QCfBXnw 6MgKKrBQg (http://www.google.co.uk/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=6okhIaA2Ii5IsM&tbnid=49u4iyIEf5UHwM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.osl.no%2Fen%2Fosl%2Faboutus%2F30_Enviro nment%2F40_Deicing&ei=hYnSUsepA8-z0QWJrIC4Aw&bvm=bv.59026428,d.ZGU&psig=AFQjCNFm_KFx-qXs70Ku6g0Cj0uYq0HLUQ&ust=1389615833333418)
try not to spray in any of the orifices either!

[MarkerInbound]

With lots of deice fluid.

[IFLY_INDIGO]

nice picture.. no wonder, a picture speaks a thousand words!

Suppose wings are ice-free, you taxied out for take-off. there is a long queue for takeoff. now there is frost on the wings. is there a provision to provide deicing service on the taxiways with engines running? or the aircraft has to come back to the bay?

[Burnie5204]

The de-icing fluid has what is call a 'holdover time' which means that it will continue to keep the aircraft frost free for a period of time, on the ground this can stretch to hours.

In the air I believe there are systems using engine bleed air and electronics to help keep the aircraft frost and ice free.

[spannersatcx]

nice picture.. no wonder, a picture speaks a thousand words!

Suppose wings are ice-free, you taxied out for take-off. there is a long queue for takeoff. now there is frost on the wings. is there a provision to provide deicing service on the taxiways with engines running? or the aircraft has to come back to the bay?
yes and no, depends entirely on the airport.

[IFLY_INDIGO]

Do you know some airport where deicing service is available to the airplanes in takeoff queue on taxiways?

[MarkerInbound]

Not exactly in the queue but DFW and PIT both deice on pads at the departure end of the runway.

[lexxie747]

and malpensa