Department of Transportation 2021 – Federal Register Recent Federal Regulation Documents
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Modification of Class E Airspace; Saratoga, WY
This action modifies the Class E airspace extending upward from 700 feet above the surface at Shively Field Airport, Saratoga, WY. This action also removes the Class E airspace extending upward from 1,200 feet above the surface, and the Saratoga NDB and the Cherokee VOR/DME from the airspace's text header and description. This action also implements several updates to the airspace's legal description. The airspace is designed to support instrument flight rules (IFR) operations at the airport.
Airworthiness Directives; Hamilton Sundstrand Corporation Propellers; Initial Regulatory Flexibility Analysis
The FAA is publishing and requesting comments on this IRFA for the previously published notice of proposed rulemaking (NPRM), Project Identifier AD-2020-01314-P, applicable to Hamilton Sundstrand Corporation 54H model propellers with a 54H60 model propeller hub installed. That NPRM proposed to supersede Airworthiness Directive (AD) 2020-12-07, which applies to certain Hamilton Sundstrand Corporation (Hamilton Sundstrand) 54H model propellers.
Membership in the National Parks Overflights Advisory Group
By Federal Register notice on May 6, 2021, the Federal Aviation Administration (FAA) and the National Park Service (NPS) invited interested persons to apply to fill one existing and one upcoming vacancy on the National Parks Overflights Advisory Group (NPOAG). This notice informs the public of the selection made for the one upcoming vacancy representing air tour operator concerns. No selection was made for the existing opening representing Native American tribal concerns so this notice also invites persons interested in that opening to apply.
Airworthiness Directives; Pacific Aerospace Limited Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Pacific Aerospace Limited Model 750XL airplanes. This proposed AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as chafing damage in the port wing skin caused by the fuel system finger filters. This proposed AD would require inspecting the wing internal skin for chafing and taking any necessary corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Learjet Inc.
The FAA proposes to adopt a new airworthiness directive (AD) for certain Learjet Inc. (Learjet) Model 45 airplanes. This proposed AD was prompted by reports of corrosion found on the upper surface of the lower center wing mid spar splice plate. This proposed AD would require repetitively inspecting the center wing area for corrosion and deterioration of protective treatments, removing any corrosion, and treating any deteriorated areas. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
The FAA is withdrawing a notice of proposed rulemaking (NPRM) that proposed to adopt a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation (Gulfstream) Models G-IV and GIV-X airplanes. The NPRM was prompted by reports of disbonding and surface cracking of the composite aft pressure bulkhead. The NPRM proposed to require inspecting the forward and aft surfaces of the pressure bulkhead composite panels for damage and repairing any damage found. Since issuance of the NPRM, the FAA has determined that there is not an unsafe condition. Accordingly, the NPRM is withdrawn.
Airworthiness Directives; Pacific Aerospace Limited Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Pacific Aerospace Limited Model 750XL airplanes. This proposed AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as insufficient clearance between the engine mount, the Beta control rod, and the inter-turbine temperature (ITT) sensing probe that could lead to chafing damage. This proposed AD would require inspecting the engine mount, the temperature probe, and the reversing cable for damage, and taking any necessary corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Leonardo S.p.a. Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AW169 helicopters. This proposed AD was prompted by a report of a broken adjustable device that is part of the pilot and co-pilot yaw pedal assemblies. This proposed AD would require modification of the pilot and co-pilot yaw pedal assemblies, 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.
Airworthiness Directives; Pratt & Whitney Turbofan Engines
The FAA is adopting a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW2037, PW2037M, PW2040, and F117-PW-100 model turbofan engines. This AD was prompted by a report of an uncontained engine failure resulting from cracks in the knife edge of the high- pressure turbine (HPT) 2nd-stage air seal assembly. This AD requires fluorescent penetrant inspections (FPIs) and visual inspections of the HPT 2nd-stage air seal assembly and, depending on the results of the inspections, replacement of the HPT 2nd-stage air seal assembly with a part eligible for installation. This AD also requires replacement of the affected HPT 2nd-stage air seal assembly, depending on the engine model, at either the next engine shop visit or the next piece-part opportunity. The FAA is issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Airbus SAS Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A330-200, -200 Freighter, -300 and -900 series airplanes; and Model A340-200, -300, -500, and -600 series airplanes. This proposed AD was prompted by a report that during the frame of flight test clearance process, a detailed analysis of air data reference (ADR) failure scenarios led to the identification that compliance requirements for loads and handling qualities throughout the flight envelope could be impaired in case of dispatch with one ADR inoperative (master minimum equipment list (MMEL) item 34-10-01) during the maximum interval allowed by the current MMEL. This proposed AD would require revising the operator's existing FAA-approved minimum equipment list (MEL) for the air data/inertial reference system, 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.
Proposed Amendment of Class E Airspace; Marana, AZ
This action proposes to amend the Class E airspace extending upward from 700 feet above the surface at Marana Regional Airport, Marana, AZ. The FAA is proposing this action as the result of an airspace review conducted due to the decommissioning of the Marana non- directional beacon (NDB). The name of the airport would be updated to coincide with the FAA's aeronautical database.
Railroads' Requests To Amend Their Positive Train Control Safety Plans and Positive Train Control Systems
This document provides the public with notice that nineteen host railroads recently submitted requests for amendments (RFA) to their FRA-approved Positive Train Control Safety Plans (PTCSP). As these RFAs may involve requests for FRA's approval of proposed material modifications to FRA-certified positive train control (PTC) systems, FRA is publishing this notice and inviting public comment on railroads' RFAs to their PTCSPs.
Public Notice for Waiver of Aeronautical Land Use Assurance Colorado Springs Airport, Colorado Springs, Colorado
Notice is being given that the FAA is considering a proposal from the City of Colorado Springs Airport Director of Aviation to change a portion of the airport from aeronautical use to non- aeronautical use at Colorado Springs Airport, Colorado Springs, Colorado. The proposal involves a parcel of airport property on the Northeast side of the airfield.
Petition for Approval Extension: Canadian Pacific Railway Company
This document provides the public notice that on July 7, 2021, Canadian Pacific Railway (CP) petitioned the Federal Railroad Administration (FRA) to extend an existing temporary suspension of some visual track inspections to allow for continuation of a previously- approved Test Program designed to test track inspection technologies (i.e., an autonomous track geometry measurement system) and new operational approaches to track inspections (i.e., combinations of autonomous inspection and traditional visual inspections).
Uniform Relocation Assistance and Real Property Acquisition for Federal and Federally-Assisted Programs; Fixed Payment for Moving Expenses; Residential Moves
The purpose of this notice is to publish changes in the Fixed Residential Moving Cost Schedule (schedule) for the States and Territories of Alabama, Alaska, Arkansas, California, Connecticut, Delaware, Florida, Guam, Hawaii, Kentucky, Massachusetts, Michigan, Montana, Nebraska, Nevada, New Mexico, New York, North Dakota, N. Mariana Islands, Ohio, Oklahoma, Puerto Rico, South Dakota, Virgin Islands, Utah, Washington, West Virginia, and Wisconsin as provided for by section 202(b) of the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970, as amended (Uniform Act). The schedule amounts for the States and Territories not listed above remain unchanged. The Uniform Act applies to all programs or projects undertaken by Federal Agencies or with Federal financial assistance that cause the displacement of any person.
Amendment and Establishment of Class E Airspace; York, PA
This action amends Class E surface airspace at York Airport, York, PA. An airspace evaluation of the area determined the additional airspace is necessary to accommodate operations at the airport. This action also updates the name of York Airport (formerly York County Airport). This action also establishes Class E airspace extending upward from 700 feet above the surface at York Airport and Class E airspace extending upward from 700 feet above the surface for Wellspan York Hospital Heliport, to accommodate new area navigation (RNAV) global positioning system (GPS) standard instrument approach procedures serving the heliport. Controlled airspace is necessary for the safety and management of instrument flight rules (IFR) operations in the area.
Air Ambulance and Patient Billing Advisory Committee Notice of Public Meeting
The U.S. Department of Transportation (Department or DOT) is giving notice that a virtual public meeting of the Air Ambulance and Patient Billing (AAPB) Advisory Committee will take place on August 11, 2021. The AAPB Advisory Committee will discuss the impact of the Airline Deregulation Act (ADA) on States' ability to regulate air ambulance operations and whether to recommend that the ADA be amended as a means of improving the regulation of air ambulance providers.
Establishment of Area Navigation (RNAV) Routes T-322, T-392, T-403, and T-405; Central United States.
This action establishes area navigation (RNAV) routes T-322, T-392, T-403, and T-405 in the central United States. The new RNAV routes expand the availability of RNAV coverage in support of transitioning the National Airspace System (NAS) from ground-based to satellite-based navigation. Additionally, a portion of the new RNAV routes provide enroute structure where VHF Omnidirectional Range (VOR) Federal airway segments were removed due to the decommissioning of Sioux City, IA; Park Rapids, MN; and Huron, SD, VORs, in support of the FAA's VOR Minimum Operational Network (MON) program.
Amendment of V-175 and V-586; Establishment of T-397; and Revocation of V-424 in the Vicinity of Macon, MO
This action amends VHF Omnidirectional Range (VOR) Federal airways V-175 and V-586; establishes Area Navigation (RNAV) route T- 397; and removes VOR Federal airway V-424 in the vicinity of Macon, MO. The Air Traffic Service (ATS) route modifications are necessary due to the planned decommissioning of the VOR portion of the Macon, MO, VOR/ Distance Measuring Equipment (VOR/DME) navigational aid (NAVAID). With the exception of RNAV route T-397, the Macon VOR/DME NAVAID provides navigation guidance for portions of the affected air traffic service (ATS) routes. The VOR is being decommissioned as part of the FAA's VOR Minimum Operational Network (MON) program.
Positive Train Control Systems
FRA is revising its regulations governing changes to positive train control (PTC) systems and reporting on PTC system performance. First, recognizing that the railroad industry intends to enhance FRA- certified PTC systems to continue improving rail safety and PTC technology's reliability and operability, FRA is modifying the process by which a host railroad must submit a request for amendment (RFA) to FRA before making certain changes to its PTC Safety Plan (PTCSP) and FRA-certified PTC system. Second, to enable more effective FRA oversight, this final rule: Expands an existing reporting requirement by increasing the frequency from annual to biannual; broadens the reporting requirement to encompass positive performance-related information, including about the technology's positive impact on rail safety, not just failure-related information; and requires host railroads to utilize a new, standardized report form.
Parts and Accessories Necessary for Safe Operation; Application for an Exemption From EROAD Inc.
FMCSA requests public comment on an application for exemption from EROAD Inc. (EROAD) to allow its Dashcam system, which is equipped with cameras, to be mounted lower in the windshield on commercial motor vehicles than is currently permitted.
Removal of the Special Rule for Model Aircraft; Correction
The FAA is correcting a final rule published on December 11, 2020. In that final rule, which became effective on the date of publication, the FAA removed the regulations codifying the Special Rule for Model Aircraft as a result of a change in applicable law. The FAA inadvertently listed an incorrect amendment number for the final rule. This document corrects that error.
Petition for Exemption; Summary of Petition Received; Joshua Aaron Alameda
This notice contains a summary of a petition seeking relief from specified requirements of Federal Aviation Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, FAA's exemption process. Neither publication of this notice nor the inclusion nor omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Amendment of Area Navigation (RNAV) Route Q-29; Northeastern United States
This action amends Area Navigation (RNAV) route Q-29 in the northeastern United States in support of the Northeast Corridor Atlantic Coast Route Project (NEC ACR) for improved efficiency of the National Airspace System (NAS) while reducing the dependency on ground based navigational systems.
Amendment of Air Traffic Service (ATS) Routes; Northeast United States
This action amends VOR Federal airways V-39 and V-93 in support of the Northeast Corridor Atlantic Coast Route (NEC ACR), and the VOR Minimum Operational Network (VOR MON) Projects.
Establishment and Amendment of Area Navigation Routes, Northeast Corridor Atlantic Coast Routes; Northeastern United States
This action modifies three existing high altitude area navigation (RNAV) routes (Q-routes), and establishes one new Q-route, in support of the Northeast Corridor Atlantic Coast Route (NEC ACR) Project. This action improves the efficiency of the National Airspace System (NAS) by expanding the availability of RNAV routing and reducing the dependency on ground-based navigational systems.
Establishment of Area Navigation (RNAV) Route Q-437; Northeastern United States
This action establishes Area Navigation (RNAV) route Q-437 in the northeastern United States in support of the Northeast Corridor Atlantic Coast Route Project (NEC ACR) for improve efficiency of the National Airspace System (NAS) while reducing the dependency on ground based navigational systems.
Amendment of V-9, V-63, V-100, V-158, V-171, and T-325; and Revocation of V-127 in the Vicinity of Rockford, IL
This action amends VHF Omnidirectional Range (VOR) Federal airways V-9, V-63, V-100, V-158, and V-171; amends Area Navigation (RNAV) route T-325; and removes VOR Federal airway V-127 in the vicinity of Rockford, IL. The air traffic service (ATS) route modifications are necessary due to the planned decommissioning of the VOR portion of the Rockford, IL, VOR/Distance Measuring Equipment (VOR/ DME) navigational aid (NAVAID). Except for RNAV route T-325, the Rockford VOR/DME NAVAID provides navigation guidance for portions of the affected routes listed above. The Rockford VOR is being decommissioned as part of the FAA's VOR Minimum Operational Network (MON) program.
Airworthiness Directives; Leonardo S.p.a. Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This proposed AD was prompted by a report of several occurrences of a cracked main gearbox (MGB) spherical bearing lock nut (lock nut). This proposed AD would require removing from service a certain part-numbered MGB lock nut that is installed on certain part- numbered MGBs and replacing it with newly designed MGB lock nut. This proposed AD would also would prohibit installing any MGB with the affected MGB lock nut and would prohibit installing any affected MGB lock nut on any helicopter. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Various Restricted Category Helicopters
The FAA is adopting a new airworthiness directive (AD) for various restricted category helicopters, originally manufactured by Bell Textron Inc. (Bell). This AD was prompted by multiple events involving failure of the tail boom attach structure including the bolts. This AD requires revising the existing Rotorcraft Flight Manual (RFM) for your helicopter to incorporate pre-flight checks; removing paint and sealant, and cleaning; repetitive inspections of structural components that attach the tail boom to the fuselage; and depending on the outcome of the inspections, repairing or replacing components, or re-bonding the structure. The FAA is issuing this AD to address the unsafe condition on these products.
Proposed Modification of Class D Airspace; McChord Field (Joint Base Lewis-McChord), WA; Supplemental
This action proposes to modify the Class D airspace at McChord Field (Joint Base Lewis-McChord), Tacoma, WA. After a review of the airspace, the FAA found it necessary to amend the existing airspace for the safety and management of Instrument Flight Rules (IFR) operations at this location and Visual Flight Rules (VFR) at a satellite airport. This proposal would also remove a reference to the McChord Very High Frequency Omnidirectional Range beacon (VOR) from the legal description, update the airport name and city, and amend the geographical coordinates for the airport to match the FAA's database.
Establishment of Class E Airspace; Craig, AK
This action establishes Class E airspace extending upward from 700 feet above the surface of the earth at El Capitan Lodge, Craig, AK. This action accommodates a new area navigation (RNAV) procedure and ensures the safety and management of instrument flight rule (IFR) operations within the National Airspace System.
Qualification of Drivers; Exemption Applications; Implantable Cardioverter Defibrillator (ICD)
FMCSA announces its decision to deny the application from one individual treated with an Implantable Cardioverter Defibrillator (ICD) who requested an exemption from the Federal Motor Carrier Safety Regulations (FMCSRs) prohibiting operation of a commercial motor vehicle (CMV) in interstate commerce by persons with a current clinical diagnosis of myocardial infarction, angina pectoris, coronary insufficiency, thrombosis, or any other cardiovascular disease of a variety known to be accompanied by syncope (transient loss of consciousness), dyspnea (shortness of breath), collapse, or congestive heart failure.
Notice of Final Federal Agency Actions of Proposed Highway in California
The FHWA, on behalf of Caltrans, is issuing this notice to announce actions taken by Caltrans that are final within the meaning of the regulation. The actions relate to a proposed highway project on State Route 198 from post mile R11.3/R12.0 and on State Route 216 from post mile R0.0/R2.56 in Tulare County for the Lovers Lane Operational Improvements and Rehabilitation Project. Those actions grant licenses, permits, and approvals for the project.
Availability of Record of Decision for the Environmental Impact Statement (EIS) for the Proposed LaGuardia Access Improvement Project at LaGuardia Airport (LGA), New York City, Queens County, New York
This notice is intended to advise the public that on July 20, 2021, the FAA issued a Record of Decision (ROD) for the federal actions reviewed in the Final Environmental Impact Statement (EIS) for the proposed LaGuardia Airport (LGA) Access Improvement Project and its connected actions (the Proposed Action). The ROD includes numerous environmental findings by the FAA, as well as environmental determinations related to funding opportunities that are subject to federal oversight. The Final EIS and ROD are available for download on the project website at https://www.lgaaccesseis.com.
Agency Information Collection Activities: Requests for Comments; Clearance of a Renewed Approval of Information Collection: Rotorcraft External Load Operator Certificate Application
In accordance with the Paperwork Reduction Act of 1995, FAA invites public comments about our intention to request the Office of Management and Budget (OMB) approval to renew an information collection. The Federal Register Notice with a 60-day comment period soliciting comments on the following collection of information was published on February 26, 2021. The collection involves the submission of FAA Form 8710-4 for the certification process of rotorcraft external-load operators. The information to be collected is necessary to evaluate the applicants' qualifications for certification.
Airworthiness Directives; General Electric Company Turbofan Engines
The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CF6-80A and CF6-80C2 model turbofan engines. This AD was prompted by an inspection by the manufacturer that revealed cracking of the high-pressure turbine (HPT) rotor stage 1 disk. This AD requires visual inspection and fluorescent penetrant inspection (FPI) of the HPT thermal shield and, if cracking is detected, removal from service of the HPT thermal shield, HPT rotor stage 1 disk and HPT rotor stage 2 disk. The FAA is issuing this AD to address the unsafe condition on these products.
Commercial Driver's License Standards, Requirements and Penalties; Exclusively Electronic Exchange of Driver History Record Information
FMCSA codifies the statutory requirement that State driver licensing agencies (SDLAs) implement a system and practices for the exclusively electronic exchange of driver history record (DHR) information through the Commercial Driver's License Information System (CDLIS), including the posting of convictions, withdrawals, and disqualifications. The rule aligns FMCSA's regulations with existing statutory requirements set forth in the Moving Ahead for Progress in the 21st Century Act (MAP-21). The rule also establishes a date by which States must be in substantial compliance with this final rule.
Amendment of Class D and E Airspace and Revocation of Class E Airspace; Cape Girardeau, MO
This action amends the Class D and Class E airspace and revokes Class E airspace at Cape Girardeau Regional Airport, Cape Girardeau, MO. The FAA is making this action as the result of an airspace review caused by the decommissioning of the Marion very high frequency (VHF) omnidirectional range (VOR) navigation aid as part of the VOR Minimum Operational Network (MON) Program. The name of the localizer is also updated to coincide with the FAA's aeronautical database. Controlled airspace is necessary for the safety and management of instrument flight rules (IFR) operations in the area.
Notice of Intent To Rule on Request To Release Airport Property at the Roswell Air Center, Roswell, New Mexico
The FAA proposes to rule and invite public comment on the release of land at the Roswell Air Center under the provisions of Section 125 of the Wendell H. Ford Aviation Investment Reform Act for the 21st Century (AIR 21).
Proposed Amendment of Class E Airspace; Galesburg, IL
This action proposes to amend the Class E airspace at Galesburg Municipal Airport, Galesburg, IL. The FAA is proposing this action as the result of airspace reviews caused by the decommissioning of the Galesburg very high frequency (VHF) omnidirectional range (VOR) as part of the VOR Minimal Operational Network (MON) Program.
Proposed Amendment of Class E Airspace; Salem, MO
This action proposes to amend the Class E airspace extending upward from 700 feet above the surface at Salem Memorial Airport, Salem, MO. The FAA is proposing this action as the result of an airspace review caused by the decommissioning of the Maples very high frequency (VHF) omnidirectional range (VOR) as part of the VOR Minimal Operational Network (MON) Program.
Airworthiness Directives; Leonardo S.p.a. Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a Model AW169 helicopters. This proposed AD was prompted by reports of in-flight pilot collective stick oscillation. This proposed AD would require a one-time measurement of the friction of the pilot collective stick assembly to verify that it is within the allowable range and, depending on findings, making an adjustment to restore the acceptable level of friction, as specified in a European Aviation Safety Agency (now 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.
Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) (Bell) Model 429 helicopters. This proposed AD was prompted by reports of incorrectly staked spherical bearings in the directional control bellcrank assembly. This proposed AD would require a one-time inspection of the lower surface of the spherical bearing in the directional control bellcrank assembly to determine if it is properly staked and, depending on the findings, applicable corrective actions. For certain helicopters, this proposed AD would also require repetitive inspections and, depending on the findings, applicable corrective actions. This proposed AD would also provide a terminating action for the repetitive inspections. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
The FAA is withdrawing a notice of proposed rulemaking (NPRM) that proposed to adopt a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation (Gulfstream) Model GVII-G500 airplanes. The NPRM was prompted by a report of a fuel quantity disparity between the overhead panel touch screens and the touch screen controllers. The NPRM proposed to require incorporating operating limitations into the airplane flight manual (AFM) until the fuel quantity management system (FQMS) software is updated. Since issuance of the NPRM, the FAA has determined that there is not an unsafe condition because all affected airplanes have updated software. Accordingly, the NPRM is withdrawn.
Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
The FAA proposes to supersede Airworthiness Directive (AD) 2021-05-16, which applies to certain Pratt & Whitney Division (PW) PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, and PW4170 model turbofan engines. AD 2021-05-16 requires initial and repetitive replacements of the low-pressure turbine (LPT) 4th-stage air sealing ring segment assemblies with parts eligible for installation. AD 2021- 05-16 also requires initial and repetitive dimensional inspections of the LPT case for bulging and, depending on the results of the dimensional inspections, repair or replacement of the LPT case. Since the FAA issued AD 2021-05-16, the FAA was notified of an inadvertent omission in the LPT 4th-stage air sealing ring segment assembly part numbers. This proposed AD would correct this omission. The FAA is proposing this AD to address the unsafe condition on these products.
Establishment of Class E Airspace; Wilder Runway LLC, AK
This action establishes Class E airspace extending upward from 700 feet above the surface of the earth at Wilder Runway LLC Airport, Port Alsworth, AK. This action will accommodate new area navigation (RNAV) procedures and ensure the safety and management of instrument flight rule (IFR) operations within the National Airspace System. This action will also correct an error in the airport name to match the FAA's database.
Establishment of Class E Airspace; Crooked Creek, AK
This action establishes Class E airspace extending upward from 700 feet above the surface of the earth at Crooked Creek Airport, Crooked Creek, AK. This action will accommodate new area navigation (RNAV) procedures and ensure the safety and management of instrument flight rule (IFR) operations within the National Airspace System.
Airworthiness Directives; Leonardo S.p.a. Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by two events of uncommanded emergency flotation system (EFS) deployment during flight. This AD requires replacing certain part- numbered EFS control panels and prohibits installing them. The FAA is issuing this AD to address the unsafe condition on these products.
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