Regulacje i polityka gospodarcza · 22.09.2015

Airworthiness Directives; Airbus Airplanes

We are revising an earlier proposed airworthiness directive (AD) for all Airbus Model A318, A319, A320, and A321 series airplanes. The NPRM proposed to supersede Airworthiness Directives (AD) 2011-13-11 and AD 2013-16-09. AD 2011-13-11 currently requires an amendment of the airplane flight manual (AFM), repetitive checks of specific centralized fault display system (CFDS) messages, an inspection of the opening sequence of the main landing gear (MLG) door actuator for discrepancies if certain messages are found, and corrective actions if necessary. AD 2013-16-09 currently requires an inspection to determine airplane configuration and part numbers of the landing gear control interface unit and MLG door actuators; and, for affected airplanes, repetitive inspections of the opening sequence of the MLG door actuator, and replacement of the MLG door actuator if necessary; and provides optional terminating action for the repetitive inspections. The NPRM was prompted by a determination that the interval of the MLG door opening sequence inspection must be reduced. The NPRM proposed to reduce the interval of the MLG door opening sequence inspection, and also to replace or modify certain MLG d