✈️Proposed Airworthiness Directive for Pilatus Aircraft PC-24
The FAA proposes to adopt a new airworthiness directive (AD) for all Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This proposed AD was prompted by a report of an inaccurate flight director calculation on approach. This proposed AD would require incorporating a temporary revision into the existing airplane flight manual (AFM) for the affected airplanes, which revises the Abnormal Procedures Section. The FAA is proposing this AD to address the unsafe condition on these products.
Learn More🌫️California Regional Haze Plan Approval
The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) revision submitted by California on August 9, 2022 (hereinafter the "2022 California Regional Haze Plan" or "the Plan"), under the Clean Air Act (CAA) and the EPA's Regional Haze Rule for the program's second implementation period. California's SIP submission addresses the requirement that states must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is proposing this action pursuant to CAA sections 110 and 169A. The EPA is also withdrawing its previous proposed rule to partially approve and partially disapprove California's regional haze SIP revision as published in the Federal Register on December 19, 2024.
Learn More🌬️EPA Proposes Approval of Texas SIP for Sulfur Dioxide Standards
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve the portion of the State Implementation Plan (SIP) submittal from the State of Texas demonstrating that the State satisfies the interstate transport requirements, also known as the "good neighbor" provision of the Clean Air Act, for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary National Ambient Air Quality Standard (NAAQS). The good neighbor provision requires each State's implementation plan to contain adequate provisions prohibiting the interstate transport of air pollution in amounts that will contribute significantly to nonattainment, or interfere with maintenance, of a NAAQS in any other State.
Learn More🚁Proposed Airworthiness Directive for Airbus Helicopters by FAA
The FAA proposes to adopt 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 proposed AD was prompted by reports of airspeed and altitude indication errors. This proposed AD would require revising the existing rotorcraft flight manual supplement (RFMS) for the helicopter and replacing the air conditioning system (ACS) condenser outlet grids with ACS condenser outlet covers, and would prohibit installing ACS condenser outlet grids. The FAA is proposing this AD to address the unsafe condition on these products.
Learn More🌫️EPA Defers Sanctions in Colorado Ozone Nonattainment Area
In the Proposed Rules section of this Federal Register, EPA is proposing approval of portions of State Implementation Plan (SIP) submissions from the State of Colorado dated June 26, 2023, May 23, 2024, May 30, 2024, and April 2, 2025. The submissions relate to Colorado Air Quality Control Commission Regulation Number 7 (Reg. 7) and Regulation Number 26 (Reg. 26), and address Colorado's SIP obligations for the Reasonably Available Control Technology (RACT) Serious ozone nonattainment area requirement for the 2008 ozone National Ambient Air Quality Standard (NAAQS). In this action, the EPA is making an interim final determination based on that proposed approval. The effect of this interim final determination is that the imposition of sanctions that were triggered by the EPA's December 8, 2023 disapproval are now deferred. Although this action is effective on publication, the EPA will take comment on this interim final determination.
Learn More✈️New Airworthiness Directive Proposed for Boeing 787 Models
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 a report of multiple instances of loss of transponder for airplanes entering airspace in the presence of continuous wave (CW) interference, where the transponder did not meet the minimum operational performance standards (MOPS) requirement for transponder response. This proposed AD would require replacing the left and right integrated surveillance system processor unit (ISSPU) hardware. The FAA is proposing this AD to address the unsafe condition on these products.
Learn More✈️New FAA Airworthiness Directives Affecting Ipeco Pilot Seats
The FAA is adopting a new airworthiness directive (AD) for certain Ipeco Holdings Limited (Ipeco) pilot and co-pilot seats. This AD was prompted by reports of unexpected rearward movement of pilot and co-pilot seats during take-off and landing. This AD requires a one-time visual inspection of each affected seat, accomplishment of applicable corrective actions, and operational tests. The FAA is issuing this AD to address the unsafe condition on these products.
Learn More✈️Proposed Airworthiness Directive for International Aero Engines
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 a quality escape following angled ultrasonic inspections (AUSIs) performed on certain high- pressure turbine (HPT) 1st-stage hubs and HPT 2nd-stage hubs. This proposed AD would require removal and replacement of certain HPT 1st- stage hubs and HPT 2nd-stage hubs. The FAA is proposing this AD to address the unsafe condition on these products.
Learn More✈️Amendment of Class E Airspace Regulations for Hagerstown, MD
This action amends the Class E airspace extending upward from 700 feet above the surface designated for Hagerstown, MD, by updating the reference to the St. Thomas Very High Frequency Omnidirectional Range Station and Tactical Air Navigation System (VORTAC) to show it as the St. Thomas Tactical Air Navigation System (TACAN). This action supports the safety and management of instrument flight rule (IFR) operations in the area.
Learn More✈️FAA Airworthiness Directive for Bombardier BD-700 Aircraft
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Inc. Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by a report that incorrect information was found in certain calculation tables in a section of the airplane flight manual (AFM) that addresses certain slat-flap conditions. This AD requires revising the Non-Normal Procedures section of the existing AFM to provide the flightcrew with corrected procedures to use in certain slat-flap conditions. The FAA is issuing this AD to address the unsafe condition on these products.
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