Airworthiness Directive · Amendment 39-18527 · Operations information
Dassault Aviation Airplanes
This AD applies to the airplanes specified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD, certificated in any category.
(1) Dassault Aviation Model MYSTERE-FALCON 900 airplanes, all serial numbers.
(2) Dassault Aviation Model FALCON 900EX airplanes, all serial numbers, except airplanes with “EASy II” “2nd certification” avionics, which are defined as: Airplanes modified in production with Dassault Aviation modification M5595; or airplanes modified in service with Dassault Aviation Service Bulletin F900EX-400 or with Dassault Aviation Service Bulletin F900EX-414, except for airplanes modified in service with any of the service information specified in paragraphs (c)(2)(i) through (c)(2)(vii) of this AD.
(i) Dassault Aviation Service Bulletin F900EX-400, dated July 1, 2011.
(ii) Dassault Aviation Service Bulletin F900EX-400, Revision 1, dated July 5, 2012.
(iii) Dassault Aviation Service Bulletin F900EX-400, Revision 2, dated November 30, 2012.
(iv) Dassault Aviation Service Bulletin F900EX-414, dated July 20, 2011.
(v) Dassault Aviation Service Bulletin F900EX-414, Revision 1, dated July 5, 2012.
(vi) Dassault Aviation Service Bulletin F900EX-414, Revision 2, dated July 27, 2012.
(vii) Dassault Aviation Service Bulletin F900EX-414, Revision 3, dated November 30, 2012.
(3) Dassault Aviation Model FALCON 2000EX airplanes, all serial numbers, except airplanes with Dassault Aviation production modification M3254, or modified in service by Dassault Aviation Service Bulletin F2000EX-300 (“EASy II” avionics).
We are adopting a new airworthiness directive (AD) for certain Dassault Aviation Model MYSTERE-FALCON 900 airplanes, FALCON 900EX airplanes, and FALCON 2000EX airplanes. This AD was prompted by a report that during a test flight, it was found that the yaw damper on the takeoff roll can increase the Minimum Control Speed on Ground (Vmcg). This AD requires revising the airplane flight manual (AFM) to incorporate procedures for the flightcrew to check that the yaw damper is set to "off" before takeoff. We are issuing this AD to ensure that the flightcrew has procedures to set the yaw damper to "off" before takeoff, which, if activated, could result in reduced control of the airplane if one engine were to fail during takeoff.
Within 30 days after the effective date of this AD, revise the normal procedures and limitations sections of the AFM, as applicable, to include new yaw damper procedures, in accordance with using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA.
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.
