🚁Proposed FAA Airworthiness Directive for Siam Hiller Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for Siam Hiller Holdings, Inc. (Siam Hiller), Model UH-12E (Army OH-23G and H-23F) and UH-12E-L helicopters. This proposed AD was prompted by reports of cracks found in a main rotor (M/R) transmission drive shaft (drive shaft). This proposed AD would require inspecting certain M/R drive shafts for a crack, prohibit installing certain M/R drive shafts unless the inspection is done, and prohibit using certain paint removers. The FAA is proposing this AD to address the unsafe condition on these products.
Learn More✈️FAA Airworthiness Directive for Embraer ERJ 190-300 Air
The FAA is superseding Airworthiness Directive (AD) 2023-23- 10, which applied to all Embraer S.A. Model ERJ 190-300 airplanes. AD 2023-23-10 required repetitive inspections of the press-fitted bushings of the wing ailerons for migration and broken sealant, measurements of the distance between the aileron surfaces and hinge fittings, functional checks of the backlash of the wing aileron control system, and all applicable related investigative and corrective actions. Since the FAA issued AD 2023-23-10, it was determined that certain requirements needed to be clarified. This AD continues to require all actions of ANAC AD 2023-06-01 with revised compliance requirements, as specified in an Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Learn More🌍EPA Withdraws Rule on Excess Emissions Compliance Requirements
Due to the receipt of adverse comment, the Environmental Protection Agency (EPA) is withdrawing the November 26, 2024, direct final rule to partially withdraw two final actions finding that 13 States and/or local air pollution control agencies failed to submit State Implementation Plan (SIP) revisions required by the Clean Air Act (CAA) in a timely manner to address the EPA's 2015 findings of substantial inadequacy and "SIP calls" for provisions applying to excess emissions during periods of startup, shutdown, and malfunction (SSM). The EPA will address all comments received in a subsequent final rule for which the EPA will not institute a second comment period.
Learn More🌍Air Quality Regulation Updates for Maricopa County Businesses
The Environmental Protection Agency (EPA) is finalizing a limited approval and limited disapproval of revisions to the Maricopa County Air Quality Department (MCAQD or "County") portion of the Arizona State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) from loading of organic liquids and gasoline. Under the authority of the Clean Air Act (CAA or "Act"), this action simultaneously approves local rules that regulate these emission sources and directs Arizona to correct rule deficiencies. We are also finalizing a disapproval of MCAQD's reasonably available control technology (RACT) demonstration for the source categories associated with these rules for the 2008 8-hour ozone national ambient air quality standard (NAAQS) in the Phoenix-Mesa ozone nonattainment area.
Learn More✈️FAA Issues Airworthiness Directive for Boeing 757 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 757 airplanes. This AD was prompted by reports of several occurrences of a power transfer unit (PTU) control valve that failed to open when commanded. This AD requires installing new relays and changing certain wire bundles leading to the PTU control valve. The FAA is issuing this AD to address the unsafe condition on these products.
Learn More✈️New Airworthiness Directive for Airbus CN-235
The FAA is adopting a new airworthiness directive (AD) for all Airbus Defense and Space S.A. Model CN-235, CN-235-200, and CN-235-300 airplanes. This AD was prompted by a torn bulkhead seal found jamming the nose landing gear (NLG) emergency cable pulley. Due to the similarity of design, the main landing gear (MLG) emergency cable pulley could be exposed to the same failure mode. This AD requires repetitive inspections and corrective actions for damage of affected bulkhead seals and retainer rings, and repetitive replacement of affected parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Learn More🚁New FCC Spectrum Rules for Uncrewed Aircraft Systems
In this document, the Federal Communications Commission (FCC or Commission) enables Uncrewed Aircraft System (UAS) operators to access dedicated spectrum for control-related communications. Specifically, this document adopts service rules under new rule part 88 that provide operators the ability to obtain direct frequency assignments in a portion of the 5030-5091 MHz band for non-networked operation. Under these rules, one or more dynamic frequency management systems (DFMSs) will manage and coordinate access to the spectrum and enable its safe and efficient use, by providing requesting operators with temporary frequency assignments to support UAS control link communications with a level of reliability suitable for operations in controlled airspace and other safety-critical circumstances. To address concerns regarding the impact of these aeronautical operations on adjacent services, this document locates these operations, for now, in the central part of the band, with substantial separation from the bands adjacent to the 5030- 5091 MHz band.
Learn More✈️FAA Issues Airworthiness Directive for Gulfstream Aircraft Compliance
The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation Model GVII-G500 and GVII-G600 airplanes. This AD was prompted by a report of cracking in the electrical grounding receptacles located on the left and right wings. This AD requires inspecting the electrical grounding receptacles for cracks and corrosion, performing applicable on-condition actions, and sealing over the grounding receptacles on the top of the wings to permanently disable the receptacle. The FAA is issuing this AD to address the unsafe condition on these products.
Learn More🔒Implications of Regulations on U.S. Sensitive Data Transactions
The Department of Justice is issuing a final rule to implement Executive Order 14117 of February 28, 2024 (Preventing Access to Americans' Bulk Sensitive Personal Data and United States Government- Related Data by Countries of Concern), by prohibiting and restricting certain data transactions with certain countries or persons.
Learn More🌍EPA's Proposed Air
The Environmental Protection Agency (EPA) is proposing to approve the state implementation plan (SIP) revisions submitted by the State of Alaska (Alaska or the State) on December 4, 2024, to address Clean Air Act requirements for the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards in the Fairbanks North Star Borough Serious PM<INF>2.5</INF> nonattainment area. Alaska's submission includes SIP revisions to meet nonattainment planning requirements for emissions inventories, modeling and sulfur dioxide precursor demonstration for major stationary sources, control measures, attainment projections and progress to attainment and associated motor vehicle emissions budgets, and contingency measures. The EPA is also starting the adequacy process for the budgets.
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