Airworthiness Directive · Amendment 39-11232 · Saab Model SAAB 2000 Series Airplanes
Saab Model SAAB 2000 Series Airplanes
Model SAAB 2000 series airplanes having serial numbers -004 through -011 inclusive and -013 through -016 inclusive, certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes. This action requires repetitive detailed inspections to detect looseness or gap of the press fit bushing installation of the actuator fittings of the aileron trim tabs, and eventual replacement of the bushings with new, staked bushings. Accomplishment of such replacement terminates the repetitive inspections. This action also provides for an optional temporary preventive action, which, if accomplished, would terminate the repetitive inspections until the terminating action is accomplished. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent looseness or gap of the bushings. In the event of failure of the redundant trim tab actuator, such looseness or gap of the bushings could lead to trim tab flutter and consequent structural failure of the trim tab and reduced controllability 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.
Aircraft
