AAR90 From United States of America, joined Jan 2000, 3568 posts, RR: 43
Reply 3, posted (15 years 2 months 3 weeks 3 days 15 hours ago) and read 1332 times:
Used at all altitudes where required. Where required depends upon aircraft type and airline operating specifications. For example, AA MD90 Operating manual requires use of airfoil anti-ice "...when icing conditions exist or are anticipated." AA B757 Operating manual lists a minimum temperature below which anti-ice is not required (I think it's -43C, but don't quote me on that -- I've been trying to forget B757 limits for a year).
*NO CARRIER* -- A Naval Aviator's worst nightmare!