Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

We propose to adopt a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation Model GV and GV-SP airplanes. This proposed AD was prompted by a new revision to the airworthiness limitations of the maintenance planning document based on fatigue and damage tolerance testing, and updated analysis. This proposed AD would require revising the maintenance or inspection program to update inspection requirements and life limits that address fatigue cracking of principal structural elements (PSEs). We are proposing this AD to ensure fatigue cracking of PSEs is detected and corrected; such fatigue cracking could result in reduced structural integrity of the PSEs and critical components.