AD 79-18-02

79-18-02 BOEING: Amendment 39-3537 as amended by Amendment 39-3744. Applies to all Boeing Model 747 airplanes which are equipped with slide/raft assemblies. Compliance is required as indicated. Accomplish the following: A. Within the next 90 days from the effective date of this AD, unless accomplished within the last 180 days, inspect the firing and packboard lanyards for corrosion in accordance with Boeing Alert Service Bulletin 747-25A2467 and B.F. Goodrich Alert Service Bulletin 25- 051. B. Lanyards showing signs of corrosion are to be replaced with new parts in accordance with B.F. Goodrich Alert Service Bulletin 25-051. C. Repeat inspections, described in paragraph A, at intervals not to exceed one (1) year from the date of the last inspection unless the lanyards are replaced as described in Boeing Service Bulletin 747-25A2467, Revision 2, paragraph III E, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. This replacement is terminating action for this Airworthiness Directive. D. Upon request of the operator, an FAA Maintenance Inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Northwest Region may adjust the inspection interval if the request contains substantiating data to justify the increase for that operator. The manufacturer's specifications and procedures identified and described in this directive are incorproated 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. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108.

Amendment 39-3537 became effective September 4, 1979. This amendment 39-3744 becomes effective April 22, 1980.