AD NUMBER: 2004-13-02
MANUFACTURER: Boeing
SUBJECT: Airworthiness Directive 2004-13-02
SUMMARY: This amendment adopts a new airworthiness
directive (AD), applicable to certain Boeing Model 747-100, -200B,
and -200F series airplanes. This action requires initial and
repetitive inspections to find discrepancies in the upper and lower
skins of the fuselage lap joints, and repair if necessary. This
action is necessary to find and fix such discrepancies, which could
result in sudden fracture and failure of a lap joint and rapid
in-flight decompression of the airplane fuselage. This action is
intended to address the identified unsafe condition.This amendment
adopts a new airworthiness directive (AD), applicable to certain
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