Thread: Rumor Mill
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Old 03-22-2018, 07:05 PM
  #33  
KodiakRS
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Joined APC: May 2015
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Originally Posted by flysooner9 View Post
When exactly do you plan on using icing speeds in Key West?
In the 175 if you encounter icing in the climb or cruise you have to use icing speeds even if you've clearly shed all the ice. It posts an EICAS message that doesn't go away and increases shaker activation point until landing.

So if you pick a tiny bit of ice on the climb, you still have to land with ice speeds even if it's been 2 hours and there's clearly no ice.

Originally Posted by FlyGood View Post
You can land ice speeds in EYW no problem unless they’re reporting less than 555
Edit: was looking at wrong numbers, should be no problem.
Second edit: was looking at correct numbers:

Lowest distance requirement flaps full with ice speeds and 5/5/5/ is 4830. EYW runway is 4801. That's at 50,000lbs. With anything resembling a normal load you're not landing.

With a dry runway things are tight, but not as bad. ISA, calm wind, flaps full, and ice accumulation you are good up to 67,500lbs (with interpolation). So light pax load, dry runway, and no alternate fuel you'll probably be ok but anything else is going to be a diversion.

I haven't looked at takeoff numbers but my guess is they're pretty tight as well. Although flaps 4 may alleviate a lot of that.
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