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Browse 1,000 rules and proposed rules from the Federal Register.
1,000
Total Regulations
Showing 271–300 of 1,000
Page 10 / 34
This action proposes to modify the Class E2 airspace extending upward from the surface and Class E5 airspace extending upward from 700 feet above the surface to optimize instrument flight procedure containment at the Ralph Wien Memorial Airport, Kotzebue, AK. This proposal supports the safety and management of instrument flight rules (IFR) operations at the airport.
The FAA is superseding Emergency Airworthiness Directive (AD) 2025-23-51, which applied to all The Boeing Company Model MD-11 and MD- 11F airplanes. Emergency AD 2025-23-51 was prompted by an accident where the left-hand engine and pylon detached from the airplane during takeoff. Emergency AD 2025-23-51 prohibited further flight until the airplane is inspected and all applicable corrective actions are performed using a method approved by the FAA. Since the FAA issued Emergency AD 2025-23-51, the FAA has determined additional airplane models are subject to the same unsafe condition. This emergency AD continues to require the actions in AD 2025-23-51 and adds the Model MD-10-10F, MD-10-30F, DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10- 30F (KC-10A and KDC-10), DC-10-40, and DC-10-40F airplanes to the applicability. The FAA previously sent an emergency AD to all known U.S. owners and operators of these airplanes. The FAA is issuing this emergency 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 is removing Airworthiness Directive (AD) 2025-05-14, which applied to all Airbus SAS Model A350-941 and -1041 airplanes. AD 2025-05-14 required repetitively testing the pre-cooler exchanger (PCE) for air leaks and reporting the results, and, depending on findings, inspecting the thermal blankets for damage and replacing the PCE. The FAA issued AD 2025-05-14 to address PCE leaking air, which could result in thermal blanket damage that, if combined with an independent event of engine fire, could lead to a temporary uncontrolled fire. Since the FAA issued AD 2025-05-14, a risk re-assessment has shown that the airworthiness concern is not an unsafe condition that warrants an AD. Accordingly, AD 2025-05-14 is removed.
This action proposes to amend the Class E airspace at New Lexington, OH. The name and geographic coordinates of Ed Newlon Field, New Lexington, OH, would also be updated to coincide with the FAA's aeronautical database. The FAA is proposing this action as the result of airspace reviews conducted due to the decommissioning of the Zanesville very high frequency omnidirectional range (VOR) as part of the VOR Minimum Operational Network (MON) Program. This action would bring the airspace into compliance with FAA orders and support instrument flight rule (IFR) procedures and operations.
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC130B4 and EC130T2 helicopters. The FAA previously sent this AD as an emergency AD to all known U.S. owners and operators of these helicopters. This AD was prompted by a determination that the service life limit of the center shaft assembly needs to be corrected because a crack could initiate on the center shaft assembly. This AD requires replacing the center shaft assembly with a serviceable center shaft assembly (either a shaft with another part number (P/N) or the same P/N with lower hours time-in-service (TIS)). This AD also prohibits installing a center shaft assembly that is not a serviceable center shaft assembly on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products.
This action proposes to amend the Class D and Class E airspace at Mansfield, OH; and the Class E airspace at Ashland and Bucyrus, OH. The name of Mansfield Lahm Regional Airport, Mansfield, OH; the name and geographic coordinates of University Hospitals Samaritan Medical Center Heliport, Ashland, OH, and Port Bucyrus/Crawford County Airport, Bucyrus, OH, would also be updated to coincide with the FAA's aeronautical database. The FAA is proposing this action as the result of airspace reviews conducted due to the decommissioning of the Mansfield very high frequency omnidirectional range (VOR) as part of the VOR Minimum Operational Network (MON) Program. This action would bring the airspace into compliance with FAA orders and support instrument flight rule (IFR) procedures and operations.
The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A320-251N, -252N, -253N, -271N, -272N, and -273N airplanes. This proposed AD was prompted by a detected deviation to the manufacturing process of the angle fitting connection to side panel skin between certain frames (FR) at a certain stringer on both left hand (LH) and right hand (RH) sides. This proposed AD would require inspecting the fastener holes to ensure they are the nominal diameter, and applicable corrective 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 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 to amend the Class E airspace at Beeville, TX. The FAA is proposing this action as the result of an airspace review conducted due to the decommissioning of the Three Rivers very high frequency omnidirectional range (VOR) as part of the VOR Minimum Operational Network (MON) Program. This action would bring the airspace into compliance with FAA orders and support instrument flight rule (IFR) procedures and operations.
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 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.
PHMSA is withdrawing its proposed rulemaking that would have increased registration fees for persons who transport, or offer for transportation, certain categories and quantities of hazardous materials.
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.
FMCSA proposes amendments to its Hazardous Materials Safety Permits (HMSPs) regulations to incorporate by reference the updated Commercial Vehicle Safety Alliance (CVSA) handbook containing inspection procedures and Out-of-Service Criteria (OOSC) for inspections of shipments of transuranic waste and highway route- controlled quantities (HRCQs) of radioactive material (RAM). The OOSC provide enforcement personnel nationwide, including FMCSA's State partners, with uniform enforcement tolerances for inspections. Currently, the regulations reference the April 1, 2024 edition of the handbook. Through this notice, FMCSA proposes to incorporate by reference the April 1, 2025 edition.
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 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 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 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 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 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 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 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.