Airworthiness Directive · Amendment 39-11115 · Aerospatiale Model ATR42 Series Airplanes
Aerospatiale Model ATR42 Series Airplanes
Model ATR42-200, -300 -320, and -500 series airplanes; except for airplanes on which either Aerospatiale Modification 4052 or Avions de Transport Regional Service Bulletin ATR42-53-0097, dated November 7, 1997, or Revision 1, dated January 20, 1997, has been accomplished; certificated in any category.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Aerospatiale Model ATR42-300 and -320 series airplanes, that currently requires a one-time inspection of the main landing gear (MLG) actuator fitting bolt holes for correct alignment, and rework of the fitting surface and bolt replacement, if necessary. This amendment requires replacement of the MLG actuator fitting bolts with new, improved bolts. This amendment also revises the applicability of the existing AD. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent failure of the MLG actuator fitting bolts, which could result in the inability to retract the MLG and attain an adequate climb gradient.
