Airworthiness Directive · Amendment 39-13482 · Saab Model SAAB 2000 Series Airplanes
Saab Model SAAB 2000 Series Airplanes
Model SAAB 2000 series airplanes, as listed in Saab Service Bulletin 2000-29-020, dated August 14, 2001; on which Saab Modification 5952 (Saab Service Bulletin 2000-29-010) has been accomplished; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that requires replacing the dual shuttle valve in the number 2 hydraulic system with a new, improved valve. This action is necessary to prevent failure of the dual shuttle valve in the number 2 hydraulic system, with reduced maximum elevator rate on the left side, which could result in pilot-induced pitch oscillation and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
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.
Aircraft
