66-02-01 BEECHCRAFT: Amendment 39-179 Part 39 Federal Register January 8, 1966. Applies to all Airplanes Equipped with Model BAK-109 Air Conditioners. \n\n\tCompliance required within the next 100 hours' time in service after the effective date of this AD unless already accomplished. \n\n\tTo prevent further failures of the compressor motor fan, replace the fan in accordance with Beech Service Bulletin No. 65-4 dated March 1965. \n\n\tNOTE: The Beechcraft Model BAK-109 Air Conditioner is known to be installed in, but not limited to, Beech Models 18, 50, 65 Series; Douglas Model DC3; Lockheed Model 18; Viscount Models 744, 745D and 810 Series airplanes. \n\n\tThis directive effective February 10, 1966.