SAIB: NM-11-53 Transport category airplanes certificated under 14 CFR part 25

This Special Airworthiness Information Bulletin (SAIB) identifies new and revised guidance for industry related to Airworthiness Directive (AD) development and implementation processes.

This SAIB provides recommendations for design approval holders (DAH) and owners/operators of transport category airplanes certificated under 14 CFR part 25.

Implementation of the recommendations in this SAIB will improve the AD development and implementation processes which support continued operational safety of the existing airplane fleet.