AD 81-19-06

81-19-06 AVIONS MARCEL DASSAULT - BREGUET AVIATION: Amendment 39-4218. Applies to Model Falcon 10 series airplanes, certificated in all categories.

Compliance is required as indicated, unless already accomplished.

To prevent loosening of seat belt screws, jamming of movement locking spigots, rupture of movement actuator coupling endfitting, and rupture of backrest housings in pilot and co-pilot seats, accomplish the following:

(a) Within the next 300 hours time in service after the effective date of this AD, on Falcon 10 airplanes serial numbers 1 through 20, 22 through 31, 33 through 38, 41 and 42, modify the pilot and co-pilot seat belt attachments in accordance with paragraph 2, "ACCOMPLISHMENT INSTRUCTIONS," of Avions Marcel Dassault - Breguet Aviation Service Bulletin No. F10 0085, Revision 1, dated November 30, 1979, or an FAA-approved equivalent.

(b) Within the next 300 hours time in service after the effective date of this AD, on Falcon 10 airplanes serialnumbers 1 through 49, 51 through 90, 92, 94 through 97, 99, 100, 102 and 104, modify the pilot and co-pilot seat fore and aft movement locking control in accordance with paragraph 2, "ACCOMPLISHMENT INSTRUCTIONS," of Avions Marcel Dassault - Breguet Aviation Service Bulletin No. F10 0143, Revision 1, dated November 30, 1979, and SICMA AERO-SEAT Service Bulletin No. 376/F10/BS02, Revision 1, dated November 30, 1979, or an FAA-approved equivalent.

(c) Within the next 600 hours time in service after the effective date of this AD, or before the accumulation of 1600 hours time in service, whichever occurs later, modify and improve greasing of the actuator endfitting on the following pilot and co-pilot seats in accordance with the instructions in paragraph 2, "ACCOMPLISHMENT INSTRUCTIONS," of Avions Marcel Dassault - Breguet Aviation Service Bulletin No. F10 0148, Revision 2, dated February 1, 1980, and SICMA AERO-SEAT Service Bulletin No. 376/F10/BS03, Revision 1, dated November 30, 1979, or an FAA-approved equivalent:

Part No. Seat Serial Numbers Pilot Seat 376-2R1 1 through 52

376-211 53 through 117

376-22 118 through 123 Co-Pilot Seat 376-3R1 1 through 52

376-311 53 through 83 and 85 through 117

376-32 118 through 122

(d) Within the next 600 hours time in service after the effective date of this AD or before the accumulation of 1600 hours time in service, whichever occurs later, on Falcon 10 airplanes serial numbers 1 through 102, 104 through 123, 125 through 128, and 133, modify the pilot and co-pilot seat backrest housings in accordance with the instructions in paragraph 2, "ACCOMPLISHMENT INSTRUCTIONS," of Avions Marcel Dassault - Breguet Aviation Service Bulletin No. F10 0193, Revision 1, dated November 30, 1979, and SICMA AERO-SEAT Service Bulletin No. 376-0017, Revision 2, dated November 30, 1979, or an FAA-approved equivalent.

(e) If an equivalent means of compliance is used in complying with this AD, thatequivalent means must be approved by the Chief, Aircraft Certification Staff, AEU-100, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium.

The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Falcon Jet Corporation, 90 Moonachie Avenue, Moonachie, New Jersey 07074. These documents may be examined at FAA Headquarters, Room 916, 800 Independence Avenue, SW., Washington DC 20591.

This amendment becomes effective October 14, 1981.