AD 74-24-06

74-24-06 BOEING: Amendment 39-2018. Applies to Boeing Model 727-200 airplanes, listed in Boeing Service Bulletin 727-32-222 dated September 6, 1974, or later FAA approved revisions. (1) To detect broken wires or a failed nose landing gear position indicator lock switch, perform an operational test of the nose landing gear position indication system per Boeing 727 Maintenance Manual, Chapter 32-61-71, within the next 300 hours time in service after the effective date of this AD, unless Service Bulletin 727-32-222 is already accomplished. (2) As terminating action to prevent false "Down and Locked" nose landing gear position indication, within the next 1,000 hours time in service after the effective date of this AD, unless already accomplished, modify the wiring in accordance with Boeing Service Bulletin 727-32-222 dated September 6, 1974, or Boeing Service Bulletin 727-32-222, Revision 1, dated November 15, 1974, or later FAA approved revisions, or an equivalent modificationapproved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. 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 Boeing Commercial Airplane Company, P. O. Box 3707, Seattle, Washington 98124. The documents may be examined at FAA Northwest Region, 9010 East Marginal Way, Seattle, Washington 98108.

This amendment becomes effective November 26, 1974.