Sun Jan 09, 2000 11:48 am

In Norway is deiceeing a big issue.The DC 9 ,Fokker jets
and similar aircraft need twice as long time to be deiceed due to the fact that they must deice the entire aircraft ,-as the Boeing`s and Airbus`s with the engines on the wings.The Airbus 320 even have a sensor to tell them when to deice.

Will anybody tell a little about this issue ?

See You!
Posts: 694
Joined: Sun Nov 21, 1999 11:44 pm

Aircraft Deiceing

Sun Jan 09, 2000 10:16 pm

Hi Urp, Buzz here. We get some ice and snow here at PDX, so i'm familiar.
Let's see, The Fokker F-28's (Horizon air is a local carrier) and DC-9 series 10 didn't have Leading Edge Devices, slats and Kruger flaps. Any frozen crud on the wings would act like a stall strip and spoil the lift on that part of the wing. So if the pilot didn't want to suddenly become a test pilot and discover when one wing (or maybe the other?) would quit flying, they make sure the wings are clean before takeoff.
MD-80's are deiced in the summer too! Seems that the center wing area collects cold fuel during a long cruise (over 3 hours). When it lands somewhere, it starts icing up. Then, when the MD-80 takes off, the wing flexes, the ice flies off the upper surface of the wings, right into the hard working engines. Swissair had it happen right after liftoff, and had a sudden twin engine failure. A sad story. American Airlines has heat blankets inside to get the area above freezing. I guess it works.
So that airplane gets a clean wing check / deice in the summer too.
The A320's ice sensor is only made to detect inflight ice. Snow / freezing rain before she flies down the runway won't work.
The 727 / 737 have a similar, but low tech visual ice detector: there's a nut on both windshield wipers that gets inflight ice build up. If you can't see it, it's icy. (grin) UAL's pilots will turn on anti-ice heat (engine inlets and wing leading edges) if it's 08c and visible moisture. g'day
Buzz Fuselsausage: Line Mechanic by night, DC-3 Crew chief by choice.

Popular Searches On

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos