Results
2001-14-20: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737-100 and -200 series airplanes, that requires repetitive inspections to find fatigue cracking in the main deck floor beams located at certain body stations, and repair, if necessary. This AD also provides for optional terminating action for the repetitive inspections. This AD is prompted by reports of incidents involving fatigue cracking and corrosion in transport category airplanes that are approaching or have exceeded their design life goal. This AD relates to the recommendations of the Airworthiness Assurance Task Force assigned to review Model 737 series airplanes, which indicate that, to assure long term continued operational safety, various structural inspections should be accomplished. The actions specified by this AD are intended to prevent failure of the main deck floor beams at certain body stations due to fatigue cracking, which could result in rapid decompression and consequent reduced controllability of the airplane.
2008-06-06: The FAA is adopting a new airworthiness directive (AD) for all Boeing Model 767 airplanes. This AD requires the following actions for the drive mechanism of the horizontal stabilizer: Repetitive detailed inspections for discrepancies and loose ball bearings; repetitive lubrication of the ballnut and ballscrew; repetitive measurements of the freeplay between the ballnut and the ballscrew; and corrective action if necessary. This AD also requires initial and repetitive inspections of the ballscrew-to-ballnut freeplay for certain airplanes. This AD results from a report of extensive corrosion of a ballscrew in the drive mechanism of the horizontal stabilizer on a similar airplane model. We are issuing this AD to prevent an undetected failure of the primary load path for the ballscrew in the drive mechanism of the horizontal stabilizer and subsequent wear and failure of the secondary load path, which could lead to loss of control of the horizontal stabilizer and consequent loss ofcontrol of the airplane.
94-25-08: This amendment supersedes an existing airworthiness directive (AD), applicable to Turbomeca Arriel 1 series turboshaft engines, that currently requires a gearbox chip detector inspection prior to further flight, subsequent inspection at designated intervals, and if necessary, removal of the gearbox, and also requires modification of the gearbox if not accomplished previously. This amendment requires modification to the intermediate gear that would constitute terminating action to the repetitive chip detector inspections. On certain engines this amendment requires immediate modification of the intermediate gear prior to further flight. This amendment is prompted by the availability of design improvements to the intermediate gear. The actions specified by this AD are intended to prevent damage to the aircraft resulting from engine debris following an uncontained engine failure.
94-25-06: This amendment adopts a new airworthiness directive (AD), applicable to certain Model DC-9-80 series airplanes and Model MD-88 airplanes, that requires modification of the engine nose cowls. This amendment is prompted by several in-flight incidents in which the engine nose cowl separated or nearly separated from the airplane. The actions specified by this AD are intended to prevent separation of the engine nose cowl from the airplane during severe vibration of the engine.
2001-15-01: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727, 737, 757-200, 757-200CB, and 757-300 series airplanes. This AD requires modification of the latch assembly of the escape slides. For certain airplanes, this AD also requires installation of a cover assembly on the trigger housing of the inflation cylinder on the escape slides. This action is necessary to prevent failure of an escape slide to deploy or inflate correctly, which could result in the slide being unusable during an emergency evacuation and consequent injury to passengers or airplane crewmembers. This action is intended to address the identified unsafe condition.
2008-06-12: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Two incidents have been reported where the normal hydraulic supplies were lost due to failure/loss of the steering jack gland housing. This has been attributed to pre-existing thread damage on the steering jack gland housing. Three previous failures may also be due to this failure mechanism. Failure of the steering jack gland housing resulted in significant damage to the right hand undercarriage bay door, and could result in the nose landing gear jamming in a fully or partially retracted position. Landing in such a condition is considered as potentially unsafe due to the degraded control of the aircraft post touch down. We are issuing this AD to require actions to correct the unsafe condition on these products.
2001-15-02: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes, that currently requires repetitive inspections and torque checks of the hanger fittings and strut forward bulkhead of the forward engine mount and adjacent support structure, and corrective actions, if necessary. The existing AD also provides for optional terminating action for the repetitive inspections and checks. This amendment requires certain new repetitive torque checks and the previously optional terminating action. The actions specified by this AD are intended to prevent loose fasteners and associated damage to the hanger fittings and bulkhead of the forward engine mount, which could result in separation of the engine from the airplane.
2020-09-13: The FAA is adopting a new airworthiness directive (AD) for all 328 Support Services GmbH Model 328-300 airplanes. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2001-14-16: This amendment adopts a new airworthiness directive (AD), applicable to certain Gulfstream Model G-V series airplanes, that requires repetitively replacing the existing nose wheel steering actuator with a new or reworked actuator having the same part number. The actions specified by this AD are intended to prevent loss of nose wheel steering control without a corresponding alert message annunciation due to the effects of moisture intrusion into the rotary variable displacement transducer (RVDT) inside the steering actuator, and consequently, an over steering condition. If an over steering condition were to occur during landing, the airplane could depart the runway. This action is intended to address the identified unsafe condition.
94-24-10: This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB SF340A and SAAB 340B airplanes, that requires repetitive inspections to detect cracking of the tray stop spindle and backrest spindle bosses on the inboard sections of certain seats; and replacement of the inboard sections, if necessary. This amendment also requires repair and identification of the modification plate, which would terminate the requirement to inspect repetitively. This amendment is prompted by reports of fatigue cracking in the vicinity of the tray stop spindle and backrest spindle bosses, which could lead to excessive movement and eventual failure of the backrest on these seats during aft loading. The actions specified by this AD are intended to prevent failure of the backrest on these seats, which could inhibit emergency egress.
2008-06-08: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Cracking has been found on the centre fuselage top aft longeron at Rib `0' on an in-service aircraft. * * * This condition could result in reduced structural integrity of the airplane. We are issuing this AD to require actions to correct the unsafe condition on these products.
2001-14-04: This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 767-300 series airplanes modified by Supplemental Type Certificate ST00118SE, that requires modification of the in-flight entertainment (IFE) system and revision of the Airplane Flight Manual. This action is necessary to ensure that the flight crew is able to remove electrical power from the IFE system when necessary and is advised of appropriate procedures for such action. Inability to remove power from the IFE system during a non-normal or emergency situation could result in inability to control smoke or fumes in the airplane flight deck or cabin. This action is intended to address the identified unsafe condition.
2020-10-04: The FAA is adopting a new airworthiness directive (AD) for all General Electric Company (GE) GE90-110B1 and GE90-115B model turbofan engines with a certain interstage high-pressure turbine (HPT) rotor seal installed. This AD requires initial and repetitive ultrasonic inspections (USIs) of the interstage HPT rotor seal and, depending on the results of the inspection, replacement of the interstage HPT rotor seal with a part eligible for installation. This AD also requires the removal of the interstage HPT rotor seal at the next engine shop visit. This AD was prompted by investigative findings from an event involving an uncontained interstage HPT rotor seal failure that resulted in debris penetrating the fuselage and the other engine. The FAA is issuing this AD to address the unsafe condition on these products.
2001-14-06: This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 737-300, -400, and -500 series airplanes, that requires repetitive inspections of certain connectors located in the main wheel wells to detect discrepancies; and corrective action, if necessary. This amendment is prompted by reports indicating engine shutdown during flight due to uncommanded movement of the engine shutoff valve. These actions are necessary to detect and correct discrepancies of certain connectors located in the main wheel wells, which could result in electrical arcing of the connectors, uncommanded closure of the engine fuel shut-off valves, and consequent in-flight loss of thrust or engine shutdown from lack of fuel.
2018-18-05: We are adopting a new airworthiness directive (AD) for certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42-200, -300, and -320 airplanes. This AD was prompted by a determination that more restrictive maintenance instructions and airworthiness limitations are necessary. This AD requires updating the maintenance or inspection program, as applicable, to incorporate new or more restrictive maintenance requirements and airworthiness limitations. We are issuing this AD to address the unsafe condition on these products.
2018-16-14: We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Inc. (Bell) Model 212, Model 412, and Model 412EP helicopters. This AD requires replacing the emergency flotation system (EFS) tube assembly. This AD was prompted by a report of an EFS tube assembly failure. The actions of this AD are intended to address an unsafe condition on these products.
2018-18-04: We are adopting a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 and -1041 airplanes. This AD was prompted by a report of protective caps that were not removed from fire extinguishing lines in certain areas of the engines. This AD requires an inspection for the presence of protective caps on fire extinguishing lines, and corrective action. We are issuing this AD to address the unsafe condition on these products.
94-23-04: This amendment adopts a new airworthiness directive (AD), applicable to Garrett Turbine Engine Company ATF3 series turbofan engines, that requires a one-time inspection for cracks of the curvic and bore area of the high pressure turbine (HPT) rotor assembly disk, and replacement, if necessary, with a serviceable disk. This amendment is prompted by several reports of cracks discovered during routine inspections of HPT rotor assembly disks. The actions specified by this AD are intended to prevent an uncontained failure of the HPT rotor assembly disk.
94-24-08: This amendment adopts a new airworthiness directive (AD), applicable to Raytheon Corporate Jets Model BAe 125-1000A and Hawker 1000 series airplanes, that requires installation of additional vent areas in the central fuselage. This amendment is prompted by an analysis which indicated that an explosive decompression could not be vented adequately with the currently installed floor venting system on these airplanes. The actions specified by this AD are intended to prevent collapse of the floor and subsequent injury to passengers and crew in the event of an explosive decompression of the fuselage.
2008-04-15: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Defective inlet self-seal valves have been identified. Detachment of a seal inside the valve could result in partial or complete blockage of the burner supply. On a hopper balloon this failure would result in an uncontrolled descent. In some circumstances this could result in serious injury. This AD requires actions that are intended to address the unsafe condition described in the MCAI.
2001-14-08: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-10 series airplanes, Model MD-10 series airplanes, and Model MD-11 series airplanes, that requires repetitive inspections of the number 1 and 2 electric motors of the auxiliary hydraulic pump for electrical resistance, continuity, mechanical rotation, and associated wiring resistance/voltage; and corrective actions, if necessary. This amendment is necessary to prevent various failures of electric motors of the auxiliary hydraulic pump and associated wiring, which could result in fire at the auxiliary hydraulic pump and consequent damage to the adjacent electrical equipment and/or structure. This action is intended to address the identified unsafe condition.
2020-09-10: The FAA is superseding Airworthiness Directive (AD) 2018-25- 04, which applied to certain C Series Aircraft Limited Partnership (CSALP) Model BD-500-1A10 and BD-500-1A11 airplanes. AD 2018-25-04 required repetitive inspections for any dislodged blow-out panel in the forward and aft cargo compartments, reporting of the inspection findings, and reinstallation if necessary. This new AD continues to require repetitive inspections, with a revised inspection interval, for affected panels that have not been replaced. This new AD also requires the replacement of affected blow-out panels with redesigned panels, which terminates the inspection requirement. This new AD also revises the applicability by removing certain airplanes. This AD was prompted by reports of dislodged cargo compartment blow-out panels. The FAA is issuing this AD to address the unsafe condition on these products.
2008-05-06: We are adopting a new airworthiness directive (AD) for certain Boeing Model 737-100, -200, -300, -400, and -500 series airplanes. This AD requires repetitive inspections for fatigue cracking in the longitudinal floor beam web, upper chord, and lower chord located at certain body stations, and repair if necessary. This AD results from several reports of cracks in the center wing box longitudinal floor beams, upper chord, and lower chord. We are issuing this AD to detect and correct fatigue cracking of the upper and lower chords and web of the longitudinal floor beams, which could result in rapid loss of cabin pressure.
2012-21-20: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 freighter series airplanes, Model A330-200 and - 300 series airplanes, and Model A340-200, -300, -500, and -600 series airplanes. This AD was prompted by reports of the ram air turbine (RAT) not deploying when tested. This AD requires identification of the supplier, part number, and serial number of the installed RAT actuator, and re-identification of the actuator and RAT, or replacement of the RAT actuator with a serviceable unit and re-identification of the RAT, if necessary. We are issuing this AD to prevent non-deployment of the RAT, which if occurred following a total engine flame-out, or during a total loss of normal electrical power generation, could result in reduced control of the airplane.
2001-23-11: This amendment supersedes an airworthiness directive (AD) for Eurocopter France Model EC 155B helicopters that currently requires, before each flight, visually checking each sliding door to ensure that each door roller is inside its rail. This amendment requires modifying the cabin sliding door rails and replacing the roller fitting. This amendment is prompted by the development of a modification that mechanically restrains the roller within its rail. The actions specified by this AD are intended to prevent in-flight loss of a cabin sliding door, impact with the main rotor or fenestron, and subsequent loss of control of the helicopter.