KELPkid From , joined Dec 1969, posts, RR:
Reply 4, posted (6 years 3 months 1 week 6 days 14 hours ago) and read 23084 times:
Considering that you didn't read an accident report on the same day that the photo was taken, I'd say don't worry
It could have been anything, like the flight crew merely taxiing the aircraft from an overnight parking stand to the gate, or even from the gate to a maintenance hangar (and I doubt they'd bother de-icing it if it's not going for a flight).
Lowrider From , joined Dec 1969, posts, RR:
Reply 5, posted (6 years 3 months 1 week 6 days 14 hours ago) and read 23083 times:
Not always. Frequently deicing must be done over special drains for environmental reasons. The aircraft may simply be repositioning to one of these areas. Or it may be enroute from a hanger to the gate. I see no evidence that it is configured for take off.
Doona From , joined Dec 1969, posts, RR:
Reply 8, posted (6 years 3 months 1 week 6 days 14 hours ago) and read 22998 times:
Not everywhere. I don't know about OSL, but at CPH de-icing is done at designated aprons located on the way to the runways.
At ARN, however, it's done at the gate. Please correct me on that if I'm wrong. Still, seems more practical having it all located in one area instead of having de-icing equipment moved back and forth all over the airport...
KELPkid From , joined Dec 1969, posts, RR:
Reply 9, posted (6 years 3 months 1 week 6 days 14 hours ago) and read 22922 times:
Quoting 413X3 (Reply 3): As long as there is no ice on the control surfaces and static ports what do you think ice will do to the body itself?
Ice is bad news for lift surfaces. 1/100 of an inch worth of frost on a wing can reduce lift by 35%. Obviously, if there is so much snow and ice on the wing that it changes the shape of the wing (where the shape that the manufacturer intended the wing to be is critical), you are making yourself a test pilot if you take off with it adhering to the airframe.
7-5-14. Operations in Ground Icing Conditions
a. The presence of aircraft airframe icing during takeoff, typically caused by improper or no deicing of the aircraft being accomplished prior to flight has contributed to many recent accidents in turbine aircraft. The General Aviation Joint Steering Committee (GAJSC) is the primary vehicle for government-industry cooperation, communication, and coordination on GA accident mitigation. The Turbine Aircraft Operations Subgroup (TAOS) works to mitigate accidents in turbine accident aviation. While there is sufficient information and guidance currently available regarding the effects of icing on aircraft and methods for deicing, the TAOS has developed a list of recommended actions to further assist pilots and operators in this area.
While the efforts of the TAOS specifically focus on turbine aircraft, it is recognized that their recommendations are applicable to and can be adapted for the pilot of a small, piston powered aircraft too.
b. The following recommendations are offered:
1. Ensure that your aircraft's lift-generating surfaces are COMPLETELY free of contamination before flight through a tactile (hands on) check of the critical surfaces when feasible. Even when otherwise permitted, operators should avoid smooth or polished frost on lift-generating surfaces as an acceptable preflight condition
Richierich From , joined Dec 1969, posts, RR:
Reply 14, posted (6 years 3 months 1 week 6 days 13 hours ago) and read 22521 times:
Quoting KELPkid (Reply 4): Considering that you didn't read an accident report on the same day that the photo was taken, I'd say don't worry
Well this doesn't mean that risks weren't/have not been taken, but I agree that in this case there was little reason to worry.
Quoting Cumulus (Reply 7): It changes the whole aerodynamics of the aircraft itself, and the build up would increase at altitude.
Yes, but in my experience it is very thin rime (spelling?) ice that is very dangerous. The thick busy snow and ice deposits usually slide right off. Rime ice has definitive swirling characteristics that can be seen but it doesn't look like much - however it has brought down modern aircraft on several occasions. Air Florida comes to mind.
Barnesy2006 From , joined Dec 1969, posts, RR:
Reply 23, posted (6 years 3 months 1 week 6 days 6 hours ago) and read 17585 times:
Definately not ready for take-off with that much contamination. We wouldn't let the 737-800's out with that much snow, even on the fuselage! where i work the fuselage only needs doing if you can't read the writing underneath it.
As do DTW and MSP. And one of the Scandinavian airports has a huge deicing gantry thing that the plane just taxis through and gets the whole thing in one blow. Apparently uses about 1/3 less deicer, too.
: That plane was not taking off it was either repositioning to a stand for the night or going to get de-iced. If you look at the elevator's there trimme
: Airplanes w/o leading edge devices can be VERY sensitive to ice. From: http://www.ntsb.gov/Publictn/2006/AAB0603.pdf
: The Scandinavians really do know how to deice! And with this much ice/sow scattered over the entire aircraft i am in no doubt that the crew performed
: Didn't they build an infrared de-icing facility in Oslo a couple of years ago? Is it in use?