Summary
The FAA proposes to supersede Airworthiness Directive (AD) 2006-11-11, which applies to all The Boeing Company Model 757 airplanes. AD 2006-11-11 requires incorporating a new revision to the Airworthiness Limitations section of the Instructions of Continued Airworthiness to mandate certain repetitive inspections for fatigue cracking of principal structural elements (PSEs). Since AD 2006-11-11 was issued, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products.