Results
2020-07-20: The FAA is superseding Airworthiness Directive (AD) 2004-06- 01, which applied to certain Dornier Model 328-100 series airplanes; and AD 2009-06-09, which applied to all Dornier Model 328-100 series airplanes. AD 2004-06-01 required replacement of the existing main landing gear (MLG) leg assembly with a modified assembly. AD 2009-06-09 required modifying the MLG main body and trailing arm bushings, and revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. This AD continues to require 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. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address the unsafe condition on theseproducts.
94-20-07: This amendment adopts a new airworthiness directive (AD), applicable to PTC Aerospace Model 91700 passenger oxygen system, installed in PTC Aerospace Model 881, 940, and 950 seats installed on McDonnell Douglas DC-10 series aircraft. This AD requires a one-time inspection to verify the proper configuration and functioning of the passenger oxygen system, and replacement, if necessary, with serviceable parts. This amendment is prompted by oxygen canisters failing to activate due to the installation of incorrect pin release brackets or defective oxygen canister release pins. The actions specified by this AD are intended to prevent failure of the passenger oxygen system to activate.
2007-25-12: 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: After a push back from the gate, an A320-200 aircraft was preparing to initiate taxi, when a NLG (nose landing gear) uncommanded retraction occurred, and then the aircraft abruptly hit the ground. * * * Untimely unlocking and/or retraction of the NLG, while on the ground, could cause injury to ground personnel and significant structural damage to the airplane. We are issuing this AD to require actions to correct the unsafe condition on these products.
2001-22-17: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9-81, -9-82, -9-83, and -9-87 series airplanes; Model MD-88 airplanes; and Model MD-90-30 series airplanes. This action requires repetitive inspections of the electric motors (or motors) of the auxiliary hydraulic pump for electrical resistance, continuity, mechanical rotation, and associated wiring resistance/voltage; and corrective actions, if necessary. The actions specified by this AD are intended to prevent various failures of the electric motor(s) 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. \n\n\tThe incorporation by reference of McDonnell Douglas Alert Service Bulletin MD80-29A067, dated October 21, 1999; and McDonnell Douglas Alert Service Bulletin MD90-29A018, dated October 21, 1999; as listed in the regulations, is approved by the Director of the Federal Register as of December 18, 2001.
2020-07-22: The FAA is adopting a new airworthiness directive (AD) for PZL Swidnik S.A. (PZL) Model PZL W-3A helicopters. This AD requires inspecting the main gearbox (MGB) bolts and washers to determine if they are properly locked and, depending on the inspection outcome, removing the engine, removing certain bolts from \n\n((Page 21755)) \n\nservice, and performing more in-depth inspections; and depending on the outcome of those inspections, replacing the graphite seal assembly or removing it from service. Finally, this AD prohibits installing any affected MGB on a helicopter unless it has met the requirements of this AD. This AD was prompted by reports that the bolts securing the input quill and graphite seal assembly of the MGB were not properly locked. The actions of this AD are intended to address an unsafe condition on these products.
94-21-06: This amendment adopts a new airworthiness directive (AD), applicable to certain Pacific Scientific lap belt assemblies and restraint systems, that requires removal of certain lap belt assemblies and restraint systems, and replacement with a differently designed assembly. This amendment is prompted by a report indicating that, subsequent to an accident involving a transport category airplane, some passengers experienced difficulty in attempting to release the buckle on their lap belts. The actions specified by this AD are intended to prevent the inability of passengers or crew to egress from their seats during an emergency situation, due to problems associated with the lap belt assembly.
2008-05-01: The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CF34-8C1/-8C5/-8C5B1/-8E5/-8E5A1, and CF34-10E series turbofan engines with certain part number (P/N) and serial number (SN) fuel metering units (FMU) installed. This AD requires a onetime test of the FMU for a miswired (reversed polarity) condition of the input wires to the overspeed solenoid. This AD results from the discovery of miswired FMU overspeed solenoids in the field. We are issuing this AD to prevent the engine from failing to shutdown during an overspeed which may lead to uncontained engine failure.
2001-22-15: This amendment adopts a new airworthiness directive (AD) that applies to all Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC-12/45 airplanes. This AD requires you to inspect the cargo doors to identify front and rear end frames with plain lightening holes and install reinforcing plates on any frame with plain lightening holes. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by this AD are intended to prevent cracking at the edges of the unflanged lightening holes, which could result in major structural damage to the airplane. Such damage could result in possible loss of control of the airplane.
2020-07-21: The FAA is adopting a new airworthiness directive (AD) for certain Yabor(atilde) Ind(uacute)stria Aeron(aacute)utica S.A. Model ERJ-170 airplanes and Model ERJ 190-100 STD, -100 LR, -100 ECJ, -100 IGW, -200 STD, -200 LR, and -200 IGW airplanes. This AD was prompted by a determination that certain main landing gear (MLG) aft pintle pins repaired using a sulphamate nickel plating have a life limit that is less than the certified life limit. This AD requires a one-time records review or a general visual inspection (GVI) of the MLG aft pintle pins to determine if certain repairs were done, and replacement of certain MLG aft pintle pins with serviceable MLG aft pintle pins, as specified in an Ag(ecirc)ncia Nacional de Avia(ccedil)(atilde)o Civil (ANAC) Brazilian AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2008-04-16: 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: Corrosion has been reported beneath the heat shield which is located around the APU (auxiliary power unit) exhaust outlet. Such corrosion could result in the fuselage being unable to sustain horizontal and vertical stabiliser loads. This is considered as potentially hazardous/catastrophic. * * * The unsafe condition is that the horizontal or vertical stabilizer might collapse under excessive load, resulting in loss of control of the airplane. We are issuing this AD to require actions to correct the unsafe condition on these products.
94-20-09: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Pratt & Whitney (PW) JT8D series turbofan engines, that currently requires initial and repetitive inspections of installed third and fourth stage low pressure turbine (LPT) blade sets for blade shroud crossnotch wear, and removal of blade sets found with excessively worn blade shroud crossnotches. This amendment continues to require inspections, and removal, if necessary, of blade sets, but also requires, as a terminating action to the inspections: installation of improved LPT containment hardware, installation of an improved No. 6 bearing scavenge pump bracket bushing, and modification and remarking with a new identification number third and fourth stage LPT vanes with a reduced platform leading edge dimension. This amendment is prompted by reports of additional uncontained engine failures since publication of the current AD, and the availability of improved LPT containment hardware.The actions specified by this AD are intended to prevent damage to the aircraft resulting from engine debris following an LPT blade or shaft failure.
2008-04-14: The FAA is superseding an existing airworthiness directive (AD), which applies to all Dassault Model Falcon 2000, Mystere-Falcon 900, Falcon 900EX, Fan Jet Falcon, Mystere-Falcon 50, Mystere-Falcon 20, Mystere-Falcon 200, and Falcon 10 series airplanes. That AD currently requires repetitive tests and inspections to detect discrepancies of the overwing emergency exit, and corrective action if necessary. This new AD expands the applicability of the existing AD and extends the repetitive test and inspection intervals for all airplanes. This AD results from reports of incorrect operation of the overwing emergency exit due to interference between the emergency exit and the interior accommodation. We are issuing this AD to prevent failure of the overwing emergency exits to open, and consequent injury to passengers or crewmembers during an emergency evacuation.
94-20-10: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-10-10, -15, -30, and -40 series airplanes and KC-10A (military) airplanes, that requires inspections to detect fatigue-related cracking in certain areas of the horizontal stabilizer; and repair of cracked parts. It also requires installation of terminating modifications, which, when accomplished, would eliminate the repetitive inspections. This amendment is prompted by reports of fatigue-related cracks found on the horizontal stabilizer. The actions specified by this AD are intended to prevent loss of the load carrying and fail safe capability of the horizontal stabilizer, damage to the adjacent structure, and subsequent reduced structural integrity of the airplane, due to the problems associated with fatigue cracking.
2001-14-12: This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 737-700IGW series airplanes modified by Supplemental Type Certificate (STC) ST09100AC-D, ST09104AC-D, ST09105AC-D, or ST09106AC-D. This AD requires modifying the passenger entertainment system (PES) installed by those STC's and revising the Airplane Flight Manual. This action is necessary to ensure that the flight crew is able to remove electrical power from the PES when necessary and is advised of appropriate procedures for such action. Inability to remove power from the PES 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.
2020-07-16: The FAA is superseding Airworthiness Directive (AD) 2016-16-09 and AD 2019-03-20, which applied to Dassault Aviation Model FALCON 7X airplanes. Those ADs required revising the existing maintenance or inspection program, as applicable, to incorporate new and more restrictive maintenance requirements and airworthiness limitations for airplane structures and systems. 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. This AD was prompted by the FAA's determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address the unsafe condition on these products.
2004-07-22 R1: The FAA is revising an existing airworthiness directive (AD) that applies to all Boeing Model 747 series airplanes. That AD currently requires that the FAA-approved maintenance inspection program be revised to include inspections that will give no less than the required damage tolerance rating for each structural significant item, and repair of cracked structure. We issued that AD to ensure the continued structural integrity of the entire fleet of Model 747 series airplanes. This new AD clarifies the applicability of the existing AD by specifying which Boeing Model 747 airplanes are affected by this AD because we have determined that certain new variants that have not yet been certified will not be subject to the requirements of this AD. This AD results from a report of incidents involving fatigue cracking in transport category airplanes that are approaching or have exceeded their design service objective. We are issuing this AD to ensure the continued structural integrity ofall Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes.
2017-20-06: We are adopting a new airworthiness directive (AD) for certain Honeywell International Inc. (Honeywell) AS907-1-1A turbofan engines. This AD was prompted by reports of loss of power due to failure of the second stage low-pressure turbine (LPT2) blade. This AD requires a one- time inspection of the LPT2 blades and, if the blades fail the inspection, the replacement of the blades with a part eligible for installation. We are issuing this AD to address the unsafe condition on these products.
2001-14-02: This amendment adopts a new airworthiness directive (AD), applicable to all McDonnell Douglas Model DC-9-51 and DC-9-83 series airplanes modified by Supplemental Type Certificate SA8026NM, that requires deactivation of the in-flight entertainment (IFE) system and removal of the system from the airplane. This action is necessary to prevent the inability of the flight crew to remove power from the IFE system when necessary. 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.
94-20-05: This amendment adopts a new airworthiness directive (AD) that applies to certain Beech Aircraft Corporation (Beech) 1900 series airplanes. This action requires inspecting the hot battery bus fuse assembly for proper wiring, correcting the wiring if incorrect, and modifying the wiring to add a redundant power source for the hot battery bus. This action results from a report of the hot battery bus bar wrongly installed on the lower (load) side of the hot battery bus fuse assembly on one of the affected airplanes. Correct installation is the upper (power) side of the circuit. The actions specified by this AD are intended to protect from overloads to either circuit connected to the hot battery bus from overloads, which, if not protected, could result in loss of certain emergency equipment.
94-19-04: This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Corporate Jets Model BAe 125-1000A series airplanes, that requires modification of the control circuit wiring for the engine thrust reversers and of the wiring for annunciation of rudder bias status. This amendment is prompted by a report that a single dormant electrical fault in the control circuit of the thrust reversers could cause a thrust reverser to deploy if the pilot selects reverse thrust during the approach phase of flight; and by reports that if an asymmetric thrust reverser condition occurs, the correct rudder bias may not be annunciated before the flight crew applies high reverse thrust. The actions specified by this AD are intended to prevent adversely affected controllability of the airplane.
2008-04-02: The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-400 series airplanes. This AD requires inspecting all barrel nuts to determine if the barrel nuts have a certain marking, inspecting affected bolts to determine if the bolts are pre-loaded correctly, and replacing all hardware if the pre-load is incorrect. For airplanes on which the pre-load is correct, this AD requires doing repetitive visual inspections for cracking of the barrel nuts and cradles and replacing all hardware for all cracked barrel nuts. This AD also requires replacement of all hardware for certain affected barrel nuts that do not have cracking, which would end the repetitive inspections for those airplanes. This AD also provides an optional replacement for all affected barrel nuts. This AD results from reports of cracking in the barrel nuts at the four primary front spar wing-to-fuselage attachment joints. We are issuing this AD to detect and correct cracking of the barrel nuts at the wing front spar wing-to- fuselage joints, which could result in reduced structural integrity of the wing-to-fuselage attachments and consequent detachment of the wing.
2001-14-13: This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 767-200 series airplanes modified by Supplemental Type Certificate ST09022AC-D, that requires modifying the passenger entertainment system (PES) and revising the Airplane Operations Manual. This action is necessary to ensure that the flight crew is able to remove electrical power from the entire PES when necessary and is advised of appropriate procedures for such action. Inability to remove power from the PES 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.
94-19-06: This amendment adopts a new airworthiness directive (AD) that is applicable to certain Puritan Bennett Sweep-On Model 2000 crew masks installed on various transport and commuter category airplanes. This action requires modification of certain crew oxygen masks. This amendment is prompted by reports of difficulty in exhaling into certain crew oxygen masks due to misalignment of the demand diaphragm. The actions specified in this AD are intended to prevent the flight crew from experiencing difficulty in exhaling into the affected crew oxygen masks in the event oxygen masks are required for the crew, such as during depressurization of the airplane.
2008-03-21: 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: * * * * * Recently, it was discovered that the inspection procedure as described by Fokker 50 Non-Destructive Testing Manual (NDTM), Part 6, Chapter 53-30-02, which is referenced by Fokker 50 Maintenance Review Board (MRB) Tasks Number 530000-00-04 and 530000-00-08 [currently required per AD (BLA) 2002-061], did not show the correct inspection areas. In addition to the existing procedure, the area at the kink in the bottom fuselage skin, the actual chine line, must be inspected. Investigation revealed that a number of aircraft have already passed the relevant inspection thresholds of 20,000 and 45,000 flight cycles by a considerable margin. As a result, it may be possible that cracks have developed and remained undetected. * * * * * * * * The unsafe condition is cracking and subsequent failure of the fuselage bottom skin, which could result in reduced structural integrity of the fuselage. This AD requires actions that are intended to address the unsafe condition described in the MCAI.
2017-18-07: We are adopting a new airworthiness directive (AD) for certain Dassault Aviation Model FALCON 7X airplanes. This AD was prompted by a discovery of noncompliant rivets in the flight deck upper skin. This AD requires replacement of noncompliant rivets. We are issuing this AD to address the unsafe condition on these products.