Airworthiness Directive · Amendment 39-18477 · Electrical power
Dassault Aviation
This AD applies to Dassault Aviation Model FALCON 7X airplanes, certificated in any category, all serial numbers.
We are adopting a new airworthiness directive (AD) for all Dassault Aviation Model FALCON 7X airplanes. This AD was prompted by reports of multiple cases of ram air turbine (RAT) blade damage. This AD requires deployment of the RAT, replacement of the RAT placard with a new RAT placard, and re-identification of the RAT. We are issuing this AD to prevent blade damage to the RAT, which could prevent RAT deployment in flight during an emergency, possibly resulting in reduced control of the airplane.
Except as provided by paragraph (h) of this AD: Within 28 months or during the next accomplishment of the RAT functional test, whichever occurs first after the effective date of this AD, deploy the RAT, replace the RAT placard with a new RAT placard, and re-identify the RAT part number (P/N) 1705673A to a part number identified in paragraph (g)(1) or (g)(2) of this AD, in accordance with the Accomplishment Instructions of Dassault Service Bulletin 7X-289, dated January 21, 2015.
(1) Change P/N 1705673A to P/N 1705673B.
(2) Change P/N 1705673A to a part number that is approved as a replacement for P/N 1705673A and approved as part of the type design by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (EASA); or Dassault Aviation's EASA Design Organization Approval (DOA); after the issue date of Dassault Service Bulletin 7X-289, dated January 21, 2015.
An airplane on which Dassault Aviation Modification M1428 has been embodied in production is not affected by the requirements of paragraph (g) of this AD, provided no RAT P/N 1705673A has been installed on that airplane since first flight.
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.
Appliances and equipment
