AD 69-22-03

69-22-03 AVIONS MARCEL DASSAULT: Amdt. 39-866. Applies to all Fan Jet Falcon and Fan Jet Falcon Series D Airplanes having Serial Numbers 73 and subsequent on which the production microswitch has been replaced with a switch that has not been modified.

Compliance is required as indicated, unless already accomplished.

To prevent the ingress of moisture in the landing gear microswitch assembly, within the next 50 hours' time in service after the effective date of this AD, replace the unmodified microswitch with a modified switch in accordance with Avions Marcel Dassault Service Bulletin No. 333, Revision 2, dated March 28, 1969, or later SGAC-approved issue, or an FAA-approved equivalent as follows:

(a) NOSE LANDING GEAR, TELESCOPIC BAR

Replace the switch P/N A1.23802 with modified switch P/N A1.23802 V1 V2.

(b) NOSE LANDING GEAR, DOOR ACTUATING CYLINDER

Replace the switch P/N A1.23801 with modified switch P/N A1.23801 V1 V2.

(c) MAIN LANDING GEAR,DRAG STRUT ACTUATOR CYLINDER

Replace the switch P/N A2.23802 with modified switch P/N A2.23802 V1 V2.

(d) MAIN LANDING GEAR, DOOR ACTUATING CYLINDER

Replace the switch P/N A2.23801 with modified switch P/N A2.23801 V1 V2.

This amendment becomes effective November 26, 1969.