Airworthiness Directive · Amendment 39-8913 · The Boeing Company Airplanes
The Boeing Company Airplanes
This AD applies to The Boeing Company 707-100 Long Body, 707-100B Long Body, 707-100B Short Body, 707-200, 707-300 Series, 707-300B Series, 707-300C Series, 707-400 Series, 720 Series, 720B Series.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 707/720 series airplanes, that requires certain structural inspections of older airplanes. This amendment is prompted by reports of incidents involving fatigue cracking and corrosion in transport category airplanes that are approaching or have exceeded their economic design service goal. The actions specified by this AD are intended to prevent degradation of the structural capabilities of the affected airplanes. This amendment relates to the recommendations of the Airworthiness Assurance Task Force assigned to review Model 707/720 series airplanes, which indicate that, to assure long term continued operational safety, various structural inspections should be accomplished.
