Results
2019-06-12: We are adopting a new airworthiness directive (AD) for all [[Page 14600]] Airbus SAS Model A330-201, -202, and -203; and Model A330-301, -302, and -303 airplanes. This AD was prompted by reports of disbonds on the engine air inlet cowl inner barrel lower panel between the back skins and the honeycomb core of airplanes equipped with certain engines. This AD requires repetitive detailed inspections of the engine air inlet cowls, and corrective actions if necessary, as specified in an European Aviation Safety Agency (EASA) AD, which is incorporated by reference. We are issuing this AD to address the unsafe condition on these products.
99-21-29: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A320 series airplanes, that requires modification of the autopilot mode engagement/disengagement lever of the rudder artificial feel unit. 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 reduced controllability of the airplane due to the failure of the rudder artificial feel unit to properly disengage from autopilot mode during approach and landing.
2007-07-02: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 737-300, -400, -500, -600, -700, -800 and -900 series airplanes; and Model 757-200 and -300 series airplanes. This AD requires modifying the activation mechanism in the chemical oxygen generator of each passenger service unit (PSU). This AD results from several reports indicating that some chemical oxygen generators failed to activate during in-flight decompression events. These failures were due to fracture of components between the passenger oxygen mask and the release pin in the oxygen generator. We are issuing this AD to prevent failure of the activation mechanism in the chemical oxygen generator, which could result in the unavailability of supplemental oxygen and possible incapacitation of passengers and cabin crew during an in- flight decompression.
2000-23-13: This amendment adopts a new airworthiness directive (AD) that is applicable to all Israel Aircraft Industries, Ltd., Model 1121, 1121A, 1121B, 1123, 1124, and 1124A series airplanes. This action requires a one-time inspection, and corrective action if necessary, to ensure the proper installation of the tie rod through the dust shield and both jackscrew assemblies on the horizontal stabilizer trim actuator. This action is necessary to prevent jamming or disconnection of the horizontal stabilizer trim actuator, which could result in reduced pitch control of the airplane. This action is intended to address the identified unsafe condition.
2017-25-08: We are adopting a new airworthiness directive (AD) for certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72- 212A airplanes. This AD requires revising the airplane flight manual to provide procedures to the flightcrew for operational restrictions affecting in-flight use of the autopilot (AP) or yaw damper (YD) during single source operation. This AD was prompted by flight test evaluations that revealed discrepancies with the YD and AP when in single source operation on certain airplanes. We are issuing this AD to address the unsafe condition on these products.
2007-06-19: The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-102, -103, and -106 airplanes and Model DHC-8-200 and DHC-8-300 series airplanes. This AD requires modifying the main landing gear (MLG) and nose landing gear (NLG) handle assemblies for alternate release and the MLG retaining plate. This AD also requires doing a related investigative action and corrective action if necessary. This AD results from reports of broken or damaged MLG and NLG alternate release cables caused by rubbing and fraying at the cable-to-handle interface. We are issuing this AD to prevent breakage of the MLG and NLG alternate release cables, which, if the normal gear extension fails, could result in the inability to extend the MLG or NLG and consequent collapse of the landing gear during ground maneuvers or upon landing.
2019-05-14: We are removing AD 2012-02-18, which applied to all Dassault [[Page 11641]] Aviation Model MYSTERE-FALCON 50 airplanes. AD 2012-02-18 required revising the maintenance program to include revised airworthiness limitations. We issued AD 2012-02-18 to address cracking of the flap tracks, which could lead to flap asymmetry and loss of control of the airplane. Since we issued AD 2012-02-18, we have issued AD 2017-09-03 to address the unsafe condition. Accordingly, AD 2012-02-18 is removed.
2000-22-06: This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney (PW) JT8D series turbofan engines, that requires inspections of main fuel pump control shafts for excessive spline wear. Additionally, as terminating action to the inspections, this action requires the replacement of the main fuel pump control shaft with parts of improved design, and reworking the main fuel pump impeller, impeller gear train plate assembly, and impeller cover assembly. This amendment is prompted by reports of failed main fuel pump control shafts caused by excessive spline wear. The actions specified by this AD are intended to prevent loss of engine throttle control, uncommanded acceleration, uncommanded deceleration or inflight shutdown, which could result in reduced airplane control during a critical phase of flight.
2004-12-07: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes equipped with Rolls Royce RB211 engines, that currently requires modification of the nacelle strut and wing structure. This amendment requires, for certain airplanes, repetitive detailed inspections of certain aft bulkhead fasteners for loose or missing fasteners, and corrective action if necessary. For certain other airplanes, this amendment requires a one-time detailed inspection of the middle gusset of the inboard side load fitting for proper alignment and realignment if necessary; a one-time eddy current inspection of certain fastener holes for cracking, and repair if necessary; and a detailed inspection of certain fasteners for loose or missing fasteners; and replacement with new fasteners if necessary. The actions specified by this AD are intended to prevent fatigue cracking in primary strut structure and consequent reduced structural integrity of the strut. These actions are intended to address the identified unsafe condition.
99-22-07: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A330 and A340 series airplanes, that requires a one-time inspection of the rail release pins and parachute pins of the escape slide/raft pack assembly for correct installation, and corrective actions, if necessary. 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 improper deployment of the escape slide/raft and blockage of the door in the event of an emergency evacuation.