AD 79-06-02

79-06-02 BOEING: Amendment 39-3439. Applies to Boeing Model 747 series airplanes certificated in all categories. Compliance required as indicated on Group I and Group II airplanes as identified in Boeing Alert Service Bulletin 747-28-A2092. To prevent abrasion of fuel tank boost pump electrical wires, accomplish the following:

A. Within 750 hours time in service or two (2) months after the effective date of this Airworthiness Directive, whichever comes first, unless already accomplished on Group I airplanes with 30,000 hours or more time in service and Group II airplanes with 6000 hours or more time in service, inspect, repair and modify the Number 1 and Number 4 main fuel tank boost pump wiring in the conduits in main fuel tanks Numbers 2 and 3 in accordance with Boeing Alert Service Bulletin 747-28-A2092 dated February 12, 1979, or later FAA approved revision. Equivalent inspections, repairs and modifications may be used when approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108. 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, Post Office Box 3707, Seattle, Washington 98124. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108.

This amendment becomes effective April 19, 1979.