Airworthiness Directives; BAe Systems (Operations) Limited Model ATP Airplanes

The FAA is superseding an existing airworthiness directive (AD), which applies to all BAe Systems (Operations) Limited Model ATP airplanes. That AD currently requires revising the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate life limits for certain items and inspections to detect fatigue cracking in certain structures. This new AD requires a revision to the ALS of the Instructions for Continued Airworthiness to incorporate new inspections to detect fatigue cracking of certain significant structural items (SSIs) and to revise life limits for certain equipment and various components. This AD is prompted by a determination that existing inspection techniques are not adequate for certain SSIs and by the revision of certain life limits. We are issuing this AD to detect and correct fatigue cracking of certain structural elements, which could adversely affect the structural integrity of these airplanes.