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Browse 1,000 rules and proposed rules from the Federal Register.
1,000
Total Regulations
Showing 301–330 of 1,000
Page 11 / 34
The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000-A, Trent 1000-AE, Trent 1000-C, Trent 1000-CE, Trent 1000-D, Trent 1000-E, Trent 1000-G, Trent 1000-H, Trent 1000-A2, Trent 1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 engines. This AD was prompted by an investigation which revealed that certain low- pressure compressor (LPC) fan blades are at risk of cracking due to incorrect dressing. This AD requires inspecting the LPC fan blades for evidence of incorrect dressing, and replacement if necessary. The FAA is issuing this AD to address the unsafe condition on these products.
This action proposes special conditions for a modified Robinson Model R66 helicopter. This helicopter, as modified by Skyryse, will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for normal category rotorcraft. This design features a four-axis full authority digital fly-by-wire (FBW) flight control system (FCS), which provides aircraft control through pilot input or coupled autopilot modes. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These proposed special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. This proposed AD was prompted by reports of door assist handles pulled loose from their lower attach point in the doorway support bracket during pre-flight checks. This proposed AD would require, for certain airplanes, installing a new retainer above the lower keyway of the support bracket assembly and installing a placard on certain support bracket assemblies or marking the part, and for certain airplanes would require an inspection of the forward and aft door assist handles and applicable on-condition actions. For certain other airplanes, this proposed AD would require installing a new retainer above the lower keyway of the support bracket assembly at certain locations and reidentifying the support bracket assembly. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model H160-B helicopters. This proposed AD was prompted by a report that several self-locking nuts of the window jettisoning system could be loosened by hand due to a non-conformity in the cable kit. This proposed AD would require modifying an affected window into a serviceable window. This proposed AD would also prohibit installing an affected window or an affected door on any helicopter. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA is superseding Airworthiness Directive (AD) 2019-19- 13, which applied to certain Airbus Helicopters Model EC225LP helicopters. AD 2019-19-13 required determining the total hours time- in-service (TIS) of the free wheel shafts of certain main rotor gearboxes (MGBs), replacing the MGB or right-hand side (RH) free wheel shaft, installing placard(s), and revising the rotorcraft flight manual (RFM) for the helicopter. Since the FAA issued AD 2019-19-13, an additional part-numbered MGB has been identified to have the same unsafe condition and the FAA determined that additional changes are necessary. This AD requires the actions of AD 2019-19-13 and expands the applicability by adding the additional part-numbered MGB, changes the requirement to determine the total hours TIS of a certain free wheel shaft, requires repetitive replacement of the MGB or the RH free wheel shaft, changes the requirements for who can replace parts, and expands the parts installation limitation conditions. The FAA is issuing this AD to address the unsafe condition on these products.
The FAA is superseding Airworthiness Directive (AD) 2024-09- 02, which applies to all Leonardo S.p.a. Model AW169 helicopters. AD 2024-09-02 required replacing certain aft float assemblies or, as an alternative, deactivating the emergency flotation system (EFS). AD 2024-09-02 also prohibited the installation of certain forward and aft float assemblies. Since the FAA issued AD 2024-09-02, the FAA has determined that replacing additional forward and aft float assemblies is necessary. This AD retains all the actions of AD 2024-09-02 and also requires replacing certain forward and aft float assemblies within 24 months or during the next accomplishment of a certain maintenance task. The FAA is issuing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model H160-B, EC 225LP, AS-365N3, and AS 332L2 helicopters; all Airbus Helicopters Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, and EC635T2+ helicopters; all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 C-2, MBB-BK 117 D-2, and MBB-BK 117 D-3 helicopters; and all Leonardo S.p.A. Model AB139, AW109SP, AW139, AW169, and AW189 helicopters. This proposed AD was prompted by reports that certain rescue hoist assemblies may have been equipped with a non- conforming overload clutch assembly. This proposed AD would require replacing each affected rescue hoist assembly with a serviceable rescue hoist assembly. This proposed AD would also prohibit installing an affected rescue hoist assembly unless certain requirements are met. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to supersede Airworthiness Directive (AD) 2024-04-06, which applies to certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-1A11 airplanes. AD 2024-04-06 requires repetitive operational checks of the gravity cross flow shut-off valve and, for certain airplanes, a one-time inspection of the motive flow fuel-feed tubes at the clamp blocks location, and applicable corrective action. Since the FAA issued AD 2024-04-06, the manufacturer developed additional corrective actions. This proposed AD would continue to require the actions in AD 2024-04-06 and would require replacement of the saddle clamp, inspection of the motive flow fuel-feed tubes, and applicable corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.
This action proposes to modify the Class E airspace extending upward from the surface and from 700 feet above the surface to optimize instrument flight procedure containment at Newport Municipal Airport, Newport, OR. This action would also remove an unnecessary descriptive reference from the text header within the airport's legal description. These actions would support the safety and management of instrument flight rules (IFR) operations at the airport.
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS-350B, AS 350BA, AS 350B1, AS 350B2, AS 350B3, and AS-350D helicopters. This proposed AD was prompted by a report of non-conformity of a certain cargo hook. This proposed AD would require inspecting the gap between the filler and the side plates of the affected cargo hook and, depending on the results, replacing the cargo hook. This proposed AD would also prohibit installing an affected cargo hook on any helicopter. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) Model CF34-8C1, CF34-8C5, CF34-8C5A1, CF34-8C5A2, CF34-8C5B1, CF34-8E2, CF34-8E2A1, CF34-8E5, CF34-8E5A1, CF34-8E5A2, CF34-8E5A2HA, CF34-8E6, and CF34-8E6A1 engines. This proposed AD was prompted by reports of in-flight "Engine Degraded" messages from the engine indicating and crew alerting system (EICAS) due to corrosion of the variable geometry (VG) system actuator. This proposed AD would require removing certain electronic engine control (EEC) full authority digital electronic control (FADEC) software versions from service and installing an updated EEC FADEC software that is eligible for installation. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Canada Limited (Bell) Model 407 helicopters. This proposed AD was prompted by a report of a fractured pilot cyclic stick tube and subsequent findings of other pilot cyclic stick tubes with fatigue cracking. This proposed AD would require repetitively inspecting the pilot cyclic stick tube assembly for a crack and, depending on the results, repairing or replacing the pilot cyclic stick tube assembly. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for all Twin Commander Aircraft LLC (Twin Commander) Model 685, 690, 690A, 690B, 690C, 690D, 695, and 695A airplanes. This proposed AD was prompted by reports of fatigue cracking affecting structural components within the fuselage and empennage structure. This proposed AD would require inspecting certain structural components within the fuselage and vertical stabilizer for any evidence of cracks, corrosion, or loose hardware, and inspecting the working fasteners at the diagonal braces of fuselage station (FS) 386 for cracks, elongation, or deformation; and depending on the results of the inspections, replacing with new parts or used parts or repairing, as applicable; and reporting inspection results to the FAA. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for certain Embraer S.A. (Embraer) Model EMB-505 airplanes. This proposed AD was prompted by the possibility that some airplanes may have invalid horizontal stabilizer (HS) backlash test results due to the use of incorrect procedures. This proposed AD would require inspecting the airplane's left-hand (LH) and right-hand (RH) HS backlash and replacement, as applicable, of certain hinge point and pitch trim actuator attachment parts and the pitch trim actuator. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for certain International Aero Engines AG (IAE AG) Model V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2531-E5, and V2533-A5 engines. This proposed AD was prompted by a manufacturer investigation that revealed that certain 3rd stage HPC rotor blades were susceptible to shroud wear and blade failure. This proposed AD would require replacement of affected 3rd stage HPC rotor blades with parts eligible for installation. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to supersede Airworthiness Directive (AD) 2017-19-26, which applies to certain The Boeing Company Model 737-600, -700, -700C, -800, and -900 series airplanes. AD 2017-19-26 requires repetitive inspections for cracks along the chem-milled steps of the fuselage skin and missing or loose fasteners in the area of the preventive modification or repairs; replacement of the time-limited repair with a permanent repair, if applicable; and applicable corrective actions that end certain repetitive inspections. AD 2017-19- 26 also requires repetitive inspections for modified airplanes. Since the FAA issued AD 2017-19-26, the FAA has determined that the compliance times are not adequate. This proposed AD would continue to require certain actions in AD 2017-19-26 but at reduced compliance times. This proposed AD would also revise instructions for the preventative modification and remove instructions for the permanent and time-limited repairs. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA is adopting a new airworthiness directive (AD) for all Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This AD was prompted by reports that the flap system on-board recorder (FSOBR) interfaces with the flap control unit signals and may result in the flap control unit monitors tripping, causing Flap Fail messages and possibly an uncommanded flap movement. This AD requires the disconnection of the FSOBR and prohibits future installation of this system. The FAA is issuing this AD to address the unsafe condition on these products.
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-2 and MBB-BK 117 D-3 helicopters. This AD was prompted by reports of airspeed and altitude indication errors. This AD requires revising the existing rotorcraft flight manual supplement (RFMS) for the helicopter, replacing the air conditioning system (ACS) condenser outlet grids with ACS condenser outlet covers, and prohibiting the installation of ACS condenser outlet grids. The FAA is issuing this AD to address the unsafe condition on these products.
The FAA proposes to supersede Airworthiness Directive (AD) 2024-23-06, which applies to certain MD Helicopters, LLC (MDHI) Model 369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N helicopters. AD 2024-23-06 requires repetitively inspecting the torque tube assembly and roller bearings, and depending on the results, replacing parts or accomplishing additional inspections. Since the FAA issued AD 2024-23-06, it has been determined that additional torque tube assemblies are affected by this unsafe condition. This proposed AD would continue to require the actions of AD 2024-23-06 and would expand the applicability. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Helicopters (Airbus) Model EC 130 T2 helicopters. This proposed AD was prompted by the determination that helicopter operators received main rotor blades (MRB) that are not certified to be installed on their helicopters and thus, without instructions for continued airworthiness, cannot be properly maintained. This proposed AD would require replacing the affected parts with serviceable parts and would prohibit installing the affected MRBs on Airbus Model EC 130 T2 helicopters. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for all LAVIA ARGENTINA S.A. (LAVIASA) Model PA-25, PA-25-235, and PA- 25-260 airplanes. This proposed AD was prompted by reports of corrosion in the front and rear wing spars and cracks in the front wing spar. This proposed AD would require inspecting the front and rear wing spars for corrosion and crack(s); inspecting the upper/lower spar flange of the front wing spar for any crack(s); repairing or replacing front and rear wing spars if crack(s) or corrosion are found, as applicable. The FAA is proposing this AD to address the unsafe condition on these products.
This action amends Colored Federal Airway Green 8 (G-8), Jet Route J-115, and United States Area Navigation (RNAV) Route T-227 and establishes RNAV Route Q-188 in Alaska. The FAA is taking this action due to the pending decommissioning of the Shemya, AK, Nondirectional Radio Beacon (NDB).
The FAA proposes to supersede Airworthiness Directive (AD) 2024-19-13, which applies to certain Airbus SAS Model A318 and A320 series airplanes, and Model A319-111, -112, -113, -114, -115, -131, - 132, -133, -151N, -153N, and -171N airplanes, and Model A321-111, -112, -131, -211, -212, -213, -231, -232, -251N, -251NX, -252N, -252NX, - 253N, -253NX, -271N, -271NX, -272N, and -272NX airplanes. AD 2024-19-13 requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2024-19-13, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This proposed AD would continue to require certain actions in AD 2024- 19-13 and would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. This proposed AD would also add Model A319- 173N and Model A321-253NY airplanes to the applicability. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This proposed AD was prompted by a report of overheated alternating current motor pumps (ACMP) that caused a fire in the main landing gear (MLG) wheel well. This proposed AD would require a records check or inspection for any installed ACMP with a certain part number and applicable on-condition actions. This proposed AD would also prohibit the installation of affected parts. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA proposes to supersede Airworthiness Directive (AD) 2025-03-06 and AD 2025-17-07, which apply to certain Airbus SAS Model A318 and A320 series airplanes; Model A319-111, -112, -113, -114, -115, -131, -132, -133, -151N, -153N, and -171N airplanes; and Model A321- 111, -112, -131, -211, -212, -213, -231, -232, -251N, -251NX, -252N, - 252NX, -253N, -253NX, -271N, -271NX, -272N, and -272NX airplanes. AD 2025-17-07 also applies to Airbus SAS Model A321-253NY airplanes. AD 2025-03-06 and AD 2025-17-07 require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2025-03- 06 and AD 2025-17-07, the FAA has determined that additional new or more restrictive airworthiness limitations are necessary. This proposed AD would continue to require certain actions in AD 2025-03-06 and all actions in AD 2025-17-07. This proposed AD would also require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations and add new airplane models. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA is superseding Airworthiness Directive (AD) 2023-05- 13, which applied to all Airbus SAS Model A300 B4-600, B4-600R, and F4- 600R series airplanes; and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). AD 2023-05-13 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2023-05-13, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This AD continues to require the actions in AD 2023-05-13 and requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.
The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-8F series airplanes. This proposed AD was prompted by reports of cracking in stringers and splice fittings located at stringer splices at multiple body stations. This proposed AD would require an inspection of each free flange of the stringers at the stringer splice for radius fillers at certain fastener locations, an inspection for cracking of the stringers and stringer splice fittings at certain stringer splice locations, and applicable on-condition actions. The FAA is proposing this AD to address the unsafe condition on these products.
The FAA is adopting a new airworthiness directive (AD) for certain Textron Aviation Inc. Model 182Q and 182R airplanes. This AD was prompted by reports of damaged intercooler inlet and outlet hoses. This AD requires repetitive visual inspections of the intercooler inlet and outlet hoses for cracks and, at a certain compliance time or if any cracks are found, replacement of the intercooler inlet and outlet hoses. The FAA is issuing this AD to address the unsafe condition on these products.
This action corrects a final rule published by the FAA in the Federal Register on September 3, 2025, amending Very High Frequency Omnidirectional Range (VOR) Federal Airways V-55, V-100, and V-277 due to the planned decommissioning of the VOR portion of the Keeler (ELX), MI, VOR/Distance Measuring Equipment (VOR/DME) in support of the FAA's VOR Minimum Operational Network (MON) program. Specifically, this action administratively corrects errors within the description of V-55 in the final rule as published on September 3, 2025.
The FAA is correcting a final rule published in the Federal Register on September 3, 2025. The final rule amends Jet Routes J-6, J- 14, J-66, J-101, J-131, and J-180; amends Very High Frequency Omnidirectional Range (VOR) Federal Airways V-54, V-74, V-124, V-305, V-532, and V-573; and revokes VOR Federal Airway V-534 in the eastern United States. This action corrects a typographical error in the route description of VOR Federal Airway V-124.