Regulacje i polityka gospodarcza · 10.10.1996
Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Lockheed Model L-1011-385 series airplanes. This action requires inspections to detect cracking of the canted pressure bulkhead at fuselage station (FS) 1212, and inspections to detect cracking of the web at the fastener rows of the vertical stiffener-to-web; and repair or replacement of the web with a new web, if necessary. This amendment is prompted by a report of fatigue cracking of the canted pressure bulkhead at FS 1212. The actions specified in this AD are intended to detect and correct such fatigue cracking, which could result in blowout of a panel between adjacent stiffeners and consequent cabin depressurization.