Department of Transportation March 21, 2025 – Federal Register Recent Federal Regulation Documents

Airworthiness Directives; Airbus Helicopters
Document Number: 2025-04802
Type: Proposed Rule
Date: 2025-03-21
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS332C helicopters. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the airworthiness limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness (ICAs) and the existing approved maintenance or inspection program, as applicable, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; The Boeing Company Airplanes
Document Number: 2025-04782
Type: Rule
Date: 2025-03-21
Agency: Federal Aviation Administration, Department of Transportation
The FAA is correcting an airworthiness directive (AD) that was published in the Federal Register. That AD applies to all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. As published, the service information referenced in certain paragraphs of the regulatory text is incorrect, and the dates specified in the "System Airworthiness Limitation No. 3Fan Blade Out Conditions" text and "System Airworthiness Limitation No. 4Engine Nacelle Maintenance Errors" text of figure 1 to paragraph (j) of the regulatory text are incorrect. This document corrects those errors. In all other respects, the original document remains the same.
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier Inc.) Airplanes
Document Number: 2025-04720
Type: Rule
Date: 2025-03-21
Agency: Federal Aviation Administration, Department of Transportation
The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 and 440), CL-600-2C10 (Regional Jet Series 700, 701, and 702), CL-600- 2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by the determination that radio altimeters cannot be relied upon to perform their intended function if they experience interference from wireless broadband operations in the 3.7-3.98 GHz frequency band (5G C-Band). This AD requires installing a new radio frequency (RF) bandpass filter on the coaxial line between the radio altimeter and the receive antenna in the aft equipment compartment. The FAA is issuing this AD to address the unsafe condition on these products.
Proposed Agency Information Collection Activities; Comment Request
Document Number: 2025-04893
Type: Notice
Date: 2025-03-21
Agency: Federal Railroad Administration, Department of Transportation
Under the Paperwork Reduction Act of 1995 (PRA) and its implementing regulations, FRA seeks approval of the Information Collection Request (ICR) summarized below. Before submitting this ICR to the Office of Management and Budget (OMB) for approval, FRA is soliciting public comment on specific aspects of the activities identified in the ICR.
Highway Systems
Document Number: 2025-04922
Type: Rule
Date: 2025-03-21
Agency: Federal Highway Administration, Department of Transportation
Notice of Final Federal Agency Actions on Proposed Transportation Project in Florida
Document Number: 2025-04841
Type: Notice
Date: 2025-03-21
Agency: Federal Highway Administration, Department of Transportation
The FHWA, on behalf of the Florida Department of Transportation (FDOT), is issuing this notice to announce actions taken by FDOT and other Federal Agencies that are final agency actions. These actions relate to the proposed State Road (S.R.) 5/U.S. 1 Over Pellicer Creek Bridge Replacement Project Development & Environment (PD&E) Study (Financial Management Number 447118-1). The project consists of replacing the parallel bridges at S.R. 5/U.S. 1 over Pellicer Creek (Existing Bridge Numbers 730008 and 730045) in Flagler (City of Palm Coast) and St. Johns Counties, Florida, and includes the necessary roadway and drainage elements to provide transitions to the existing roadway and drainage systems. These actions grant licenses, permits, or approvals for the project.
Notice of Final Federal Agency Actions on Transportation Project in Washington State
Document Number: 2025-04840
Type: Notice
Date: 2025-03-21
Agency: Federal Highway Administration, Department of Transportation
This notice announces actions taken by FHWA that are final. The action relates to the approval of the categorical exclusion for the SR 509/Clear Creek Restoration Project in Pierce County, State of Washington. Those actions grant licenses, permits, and approvals for the project.
Airworthiness Directives; Airbus SAS Airplanes
Document Number: 2025-04838
Type: Proposed Rule
Date: 2025-03-21
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to supersede Airworthiness Directive (AD) 2023-02-18, which applies to certain Airbus SAS Model A350-941 and - 1041 airplanes. AD 2023-02-18 requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2023-02-18, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This proposed AD would continue to require certain actions in AD 2023-02-18 and would 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 proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.
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