Airworthiness Directive · Amendment 39-21941 · Rudder control system
Textron Aviation Inc. (Type Certificate Previously Held by Raytheon Aircraft Company, Hawker Beechcraft Corporation, and Beechcraft Corporation) Airplanes
This AD applies to Textron Aviation Inc. (type certificate previously held by Raytheon Aircraft Company, Hawker Beechcraft Corporation, and Beechcraft Corporation) Model 300, 300LW, B300, and B300C airplanes, all serial numbers, certificated in any category, that are equipped with a Garmin International, Inc., G1000 integrated avionics system installed in accordance with Supplemental Type Certificate No. SA01535WI-D with GSA 9000 yaw servo software version 2.13 or earlier.
The FAA is adopting a new airworthiness directive (AD) for certain Textron Aviation Inc. (type certificate previously held by Raytheon Aircraft Company, Hawker Beechcraft Corporation, and Beechcraft Corporation) (Textron) Model 300, 300LW, B300, and B300C airplanes. This AD was prompted by a report of a timing issue where the yaw servo software can generate a motor position fault when the pilot applies rudder input at the same time the rudder boost system is activated, which disables the rudder boost function and leads to a reduced ability of the flight crew to maintain the safe flight and landing of the airplane or loss of control of the airplane. This AD requires updating the software version of the yaw servo. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Unless already done, within 100 hours time-in-service (TIS) after the effective date of this AD or within 90 days after the effective date of this AD, whichever occurs first, update the GSA 9000 yaw servo software to a version that is not 2.13 or earlier.
(2) As of the effective date of this AD, do not install yaw servo software version 2.13 or earlier on the Garmin G1000 integrated avionics system on any 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.
