79-21-02 AVIONS MARCEL DASSAULT (A.M.D.): Amendment 39-3587. Applies to all models of the Fan Jet Falcon series airplanes, Serial Numbers 1 through 376, 378 through 380, 382, and 385 through 388, certificated in all categories.
Compliance required as specified in the body of this AD, unless already accomplished.
To prevent inadvertent opening of the passenger door due to incomplete manual engagement in closing, worn components, or poor adjustment of the latching mechanism, accomplish the following:
(a) For aircraft serial numbers 371 and 386, comply only with paragraph (e) of this AD. All other aircraft must comply with paragraphs (b) through (g) of this AD.
(b) Within the next 50 hours in service after the effective date of this AD, unless already accomplished, inspect the passenger door outer control handle and its catch for evidence of wear or inadequate mating of the engaging surfaces in accordance with Avions Marcel Dassault (A.M.D.) Service Bulletin (SB)No. 604 dated May 17, 1978, with Revision 1 dated June 8, 1978, or equivalent approved by the Chief, Aircraft Certification Staff, FAA, AEU-100, Europe, Africa, and Middle East Region.
(c) If during any inspection required by this AD, inadequate mating of the door outer control handle and its catch is found, before further flight, except that the airplane may be flown in accordance with FAR 21.197 and 21.199 to a base where repairs can be made, modify the door outer control handle assembly and its catch and install new steel lock bolts in accordance with AMD - SB No. 615, dated May 17, 1978, or an equivalent approved by Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, or if wear is localized on the door outer handle, replace it with a door outer handle of the same part number in accordance with the Falcon 20 service manuals referenced in paragraph "J" of AMD-SB No. 615 or equivalent approved by Chief, Aircraft Certification Staff, AEU-100, FAA, Europe, Africa, and Middle East Region.
(d) If during any inspection required by this AD, inadequate mating of the door outer control handle and its catch is found or if a new door outer control handle has been installed in accordance with paragraph (c) of this AD, inspect the door outer control handle and its catch in accordance with the method specified in paragraph (b) of this AD at intervals not to exceed 500 hours time in service from the last inspection until the door outer control handle assembly and its catch are modified and steel lock bolts are installed in accordance with AMD - SB No. 615, dated May 17, 1978, or equivalent approved by the Chief, Aircraft Certification Staff, AEU-100, FAA, Europe, Africa, and Middle East Region.
(e) Within the next 500 hours time in service after the effective date of this AD, install passenger door closing instruction placards and symbols in accordance with the Accomplishment Instructions, paragraph 2.k. of AMD - SB No. 616, dated May 17, 1978 or FAA-approved equivalent.
(f) Within the next 1000 hours time in service after the effective date of this AD, install a microswitch and associated electrical circuitry to the passenger door handle mechanism and accomplish associated modifications, in accordance with AMD - SB 616, dated May 17, 1978, or equivalent approved by the Chief, Aircraft Certification Staff, AEU-100, Federal Aviation Administration, Europe, Africa, and Middle East Region, c/o American Embassy, Brussels, Belgium.
(g) Upon accomplishment of each modification specified in this AD, incorporate appropriate revisions to the Aircraft Parts, Maintenance and Repair Manuals, and Wiring Diagrams related to AMD service bulletins referenced in this AD.
This amendment becomes effective November 12, 1979.