Airworthiness Directive · Amendment 39-9318 · British Aerospace Regional Aircraft Airplanes
British Aerospace Regional Aircraft Airplanes
This AD applies to British Aerospace Regional Aircraft H.P. 137 Jetstream Mk. 1, Jetstream Series 200.
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) that applies to Jetstream Aircraft Limited (JAL) HP137 Mk1 and Jetstream series 200 airplanes. This action requires incorporating operating limitations that revise the maximum flap operating speed for DOWN flaps to 120 knots indicated airspeed (KIAS), and prohibit extending the flaps beyond the take-off position if ice is visible on the airplane. An incident where an airplane of similar type design to the affected airplanes experienced sudden pitch down because of the accumulation of over one inch of ice prompted the proposed action. The actions specified by this AD are intended to prevent sudden pitch down of the airplane during icing conditions, which could lead to loss of control of the airplane.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
