Airworthiness Directive · Amendment 39-9501 · Kelowna Flightcraft R & D Ltd. Airplanes
Kelowna Flightcraft R & D Ltd. Airplanes
This AD applies to Kelowna Flightcraft R & D Ltd. 240 Series, 340, 440, Military C-131B, Military C-131D, Military C-131E, Military C-131F/R4Y-1.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to various General Dynamics (Convair) airplanes, that requires revising the Airplane Flight Manual to require that the flight crew limit the flap settings during certain icing conditions and air temperatures. This amendment is prompted by reports indicating that incidents involving uncommanded pitch excursions have occurred due to ice contaminated tailplane stall (ICTS) that occurred during or following flight in icing conditions. If flap settings are increased for landing when conditions for ICTS are present, elevator control could be affected adversely and the airplane could descend uncontrollably. The actions specified by this AD are intended to ensure that the flight crew is advised of the potential hazard related to increasing the flap settings when conditions for ICTS are present, and the procedures necessary to address it.
