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Document Number: 2016-02762
Type: Rule
Date: 2016-02-11
Agency: Federal Aviation Administration, Department of Transportation
These special conditions are issued for Boeing Model 737-8 airplanes. These airplanes will have a novel or unusual design feature associated with an electronic flight-control system that provides roll control of the airplane through pilot inputs to the flight computers. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These 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.
Document Number: 2016-02761
Type: Proposed Rule
Date: 2016-02-11
Agency: Federal Aviation Administration, Department of Transportation
This action proposes special conditions for the Boeing Model 737-8 airplane. This airplane will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport-category airplanes. This design feature is non-rechargeable lithium battery systems. 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.
Document Number: 2016-02674
Type: Proposed Rule
Date: 2016-02-11
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Coldwater, KS. Controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures developed at Commanche County Airport, for the safety and management of Instrument Flight Rules (IFR) operations at the airport.
Document Number: 2016-02672
Type: Rule
Date: 2016-02-11
Agency: Federal Aviation Administration, Department of Transportation
This action establishes Class E airspace extending upward from 700 feet above the surface at Clinton Municipal Airport, Clinton, AR, to accommodate new Standard Instrument Approach Procedures (SIAPs) for the safety and management of Instrument Flight Rules (IFR) operations at the airport. This action also corrects the state identifier in the legal airspace description.
Document Number: 2016-02547
Type: Notice
Date: 2016-02-11
Agency: Federal Aviation Administration, Department of Transportation
The FAA is issuing this notice to advise the public of the Seventh RTCA Special Committee 230 meeting.
Document Number: 2016-02668
Type: Notice
Date: 2016-02-10
Agency: Federal Aviation Administration, Department of Transportation
The Federal Aviation Administration (FAA) announces its determination that the noise exposure maps submitted by the City and County of San Francisco for San Francisco International Airport under the provisions of 49 U.S.C. 47501 et. seq (Aviation Safety and Noise Abatement Act) and 14 CFR part 150 are in compliance with applicable requirements.
Document Number: 2016-02549
Type: Proposed Rule
Date: 2016-02-10
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Ketchum, OK. Controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures developed at South Grand Lake Regional Airport, for the safety and management of Instrument Flight Rules (IFR) operations at the airport.
Document Number: 2016-02548
Type: Proposed Rule
Date: 2016-02-10
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Horseshoe Bend, AR. Controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures developed at Horseshoe Bend Airport, for the safety and management of Instrument Flight Rules (IFR) operations at the airport.
Document Number: 2016-02566
Type: Notice
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
This notice contains a summary of a petition seeking relief from specified requirements of Title 14 of the Code of Federal Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, the FAA's exemption process. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Document Number: 2016-02565
Type: Notice
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
This notice contains a summary of a petition seeking relief from specified requirements of Title 14 of the Code of Federal Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, the FAA's exemption process. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Document Number: 2016-02563
Type: Notice
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to rule and invite public comment on the release of land at the Monroe Regional Airport at Monroe, Louisiana under the provisions of Section 125 of the Wendell H. Ford Aviation Investment Reform Act for the 21st Century (AIR 21).
Document Number: 2016-02561
Type: Notice
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is issuing this notice to advise the public of the Sixty-Seventh RTCA Special Committee 135 meeting.
Document Number: 2016-02551
Type: Notice
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is issuing this notice to advise the public of the Seventh RTCA Special Committee 229 meeting.
Document Number: 2016-02550
Type: Notice
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
The FAA is issuing this notice to advise the public of the Twelfth RTCA Tactical Operations Committee meeting.
Document Number: 2016-02477
Type: Rule
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for all Turbomeca S.A. ARRIEL 2C, 2C1, 2C2, 2S1, and 2S2 turboshaft engines with modification TU34 or TU34A installed. This AD requires inspecting the torque conformation box (TCB) for correct resistance values and removing TCBs that fail inspection before further flight. This AD was prompted by TCB failures. We are issuing this AD to prevent failure of the TCB, loss of engine thrust control, and damage to the helicopter.
Document Number: 2016-02476
Type: Rule
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-535E4-37, RB211-535E4-B-37, and RB211-535E4- C-37 turbofan engines. This AD requires recalculating the cyclic life for certain engine life-limited rotating parts and removing those parts that have exceeded their cyclic life limit within specified compliance times. This AD was prompted by a review of operational data that determined certain RR RB211-535E4-37 engines have been operated to a more severe flight profile than is consistent with the flight profile used to establish the cyclic life limits for the rotating parts. We are issuing this AD to prevent failure of life-limited rotating parts, uncontained parts release, damage to the engine, and damage to the airplane.
Document Number: 2016-02233
Type: Rule
Date: 2016-02-09
Agency: Federal Aviation Administration, Department of Transportation
We are superseding airworthiness directive (AD) 2014-13-01 for Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model MBB-BK 117 C-2 helicopters with a certain Goodrich rescue hoist damper unit (damper unit) installed. AD 2014-13-01 required repairing or replacing the damper unit or deactivating the rescue hoist. AD 2014-13-01 was prompted by a report of an uncommanded detachment of a damper unit from the cable. This new AD retains the optional requirement of deactivating the rescue hoist, expands the applicability, and requires either replacing or modifying the damper unit with a newly developed single- piece retainer. These actions are intended to prevent the hoist damper unit detaching from the cable resulting in loss of an external load or person from the helicopter hoist and injury to persons being lifted by the hoist.
Document Number: 2016-02347
Type: Notice
Date: 2016-02-08
Agency: Federal Aviation Administration, Department of Transportation
This notice contains a summary of a petition seeking relief from specified requirements of Title 14 of the Code of Federal Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, the FAA's exemption process. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Document Number: 2016-02345
Type: Notice
Date: 2016-02-08
Agency: Federal Aviation Administration, Department of Transportation
This notice contains a summary of a petition seeking relief from specified requirements of Title 14 of the Code of Federal Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, the FAA's exemption process. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Document Number: 2016-02285
Type: Rule
Date: 2016-02-08
Agency: Federal Aviation Administration, Department of Transportation
This action amends the legal description of the Class E surface area airspace and Class E airspace designated as an extension at Alpena County Regional Airport, Alpena, MI, and Muskegon County Airport, Muskegon, MI, eliminating the Notice to Airmen (NOTAM) part- time status, and updates the geographic coordinates of Muskegon County Airport, to coincide with the FAA's aeronautical database.
Document Number: 2016-02284
Type: Rule
Date: 2016-02-08
Agency: Federal Aviation Administration, Department of Transportation
This action amends the legal description of Class E surface area airspace and Class E airspace designated as an extension at Wilmington Air Park, Wilmington, OH, eliminating the Notice to Airmen (NOTAM) part-time status. This action also updates the airport name of Wilmington Air Park, Wilmington, OH, to coincide with the FAA's aeronautical database.
Document Number: 2016-02283
Type: Rule
Date: 2016-02-08
Agency: Federal Aviation Administration, Department of Transportation
This action amends the legal description of the Class E surface area airspace and Class E airspace designated as an extension, at Rochester International Airport, Rochester, MN, and St. Cloud Regional Airport, St. Cloud, MN, eliminating the Notice to Airmen (NOTAM) part-time status. This action also updates the geographic coordinates of Rochester International Airport to coincide with the FAA's aeronautical database.
Document Number: 2016-02193
Type: Proposed Rule
Date: 2016-02-08
Agency: Federal Aviation Administration, Department of Transportation
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This proposed AD was prompted by a report of wire chafing damage, which caused an electrical arc to an adjacent hydraulic tube located on the forward bulkhead of the main landing gear (MLG) wheel well, resulting in a hole in a hydraulic tube and consequent total loss of system B hydraulic fluid. This proposed AD would require an inspection for chafing damage of wire bundles and a hydraulic tube in the right side of the MLG wheel well, and corrective action if necessary; and installation of clamps between the wire bundles and hydraulic tube. We are proposing this AD to prevent chafing damage, which could result in electrical arcing that can cause a hole in the hydraulic tube and consequent loss of hydraulic fluid, possibly resulting in a fire in the MLG wheel well.
Document Number: 2016-02171
Type: Notice
Date: 2016-02-05
Agency: Federal Aviation Administration, Department of Transportation
The FAA is issuing this notice to advise the public of the Seventeenth RTCA NextGen Advisory Committee (NAC) meeting.
Document Number: 2016-02161
Type: Proposed Rule
Date: 2016-02-05
Agency: Federal Aviation Administration, Department of Transportation
We are revising an earlier proposed airworthiness directive (AD) for certain Airbus Model A330-200 and -300 series airplanes; and Model A340-200 and -300 series airplanes. The NPRM proposed to supersede AD 2009-15-17 to continue to require inspections for damage to the protective treatments or any corrosion of all main landing gear (MLG) bogie beams, application of protective treatments, and corrective action if necessary. The NPRM also proposed to require modification of the MLG bogie beams, to allow optional methods of compliance for certain actions, and to add airplanes to the applicability. The first supplemental notice of proposed rulemaking (SNPRM) proposed to revise the compliance times and add a one-time inspection for certain airplanes. The NPRM was prompted by reports of thin paint coats and paint degradation on enhanced MLG bogie beams. This second SNPRM proposes to clarify the required actions and the specific configurations to which the actions must be applied. We are proposing this second SNPRM to detect and correct damage or corrosion of the MLG bogie beams, which could cause a runway excursion event, bogie beam detachment from the airplane, or MLG collapse, and could result in damage to the airplane and injury to the occupants. Since these actions impose an additional burden over those proposed in the first SNPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.
Document Number: C1-2016-00199
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
Document Number: 2016-02170
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
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. 49 U.S.C. Section 44707 empowers the Administrator of the Federal Aviation Administration (FAA) to provide for the examination and rating of civilian schools giving instruction in flying. This CFR prescribes the requirements for issuing pilot school certificates, provisional pilot school certificates and associated ratings to qualified applicants.
Document Number: 2016-02163
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
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 a previously approved information collection. The information collected is needed to determine applicant eligibility and compliance for certification of Civil Aviation mechanics and operation of aviation mechanic schools.
Document Number: 2016-02162
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
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 FAA's B4UFLY smartphone app will provide situational awareness of flight restrictionsincluding locations of airports, restricted airspace, special use airspaces, and temporary flight restrictionsbased on a user's current or planned flight location.
Document Number: 2016-02160
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
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. This information will be used to issue special flight authorizations for non-revenue transports and non-transport jet operations of Stage 2 airplanes at U.S. airports. Only a minimal amount of data is requested to identify the affected parties and determine whether the purpose for the flight is one of those enumerated by law.
Document Number: 2016-02158
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
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 reinstate a previously discontinued information collection. AC Form 8050-5 is an application for a dealer's Aircraft Registration Certificate which, under 49 United States Code 1404, may be issued to a person engaged in manufacturing, distributing, or selling aircraft.
Document Number: 2016-02157
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
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. Title 49 U.S.C., Section 44702 authorizes issuance of air carrier operating certificates. 14 CFR part 135 prescribes requirement for Air Carrier/Commercial Operators. The information collected shows compliance and applicant eligibility.
Document Number: 2016-02156
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
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 a previously approved information collection. The FAA uses the information collected related to public safety to ensure that a launch or reentry operation involving a human on board a vehicle will meet the risk criteria and requirements with regard to ensuring public safety.
Document Number: 2016-02046
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
The FAA assigned the Aviation Rulemaking Advisory Committee (ARAC) a continuation of a task to provide recommendations regarding standards, training guidance, test management, and reference materials for airman certification purposes. The FAA added the Aircraft Mechanic Certificate with Airframe and/or Powerplant ratings to the existing list of certificates and ratings for which the ARAC will provide recommendations. This notice informs the public of the continuing ARAC activity and solicits additional membership for the existing Airman Certification System Working Group (ACS WG).
Document Number: 2016-02040
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action amends Class E Airspace at Ithaca Tompkins Regional Airport, Ithaca, NY; and Kingston VORTAC, Poughkeepsie, NY, by eliminating the Notice to Airmen (NOTAM) part time status of the Class E surface airspace designated as an extension at the Ithaca and Poughkeepsie locations. This action also adds Dutchess County Airport to the Kingston VORTAC designation, updates the geographic coordinates of each navigation aid and Ithaca Tompkins Regional to coincide with the FAA's aeronautical database, and recognizes the airport name for Ithaca Tompkins Regional Airport. This is an administrative change to coincide with the FAA's aeronautical database.
Document Number: 2016-02037
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action amends the legal description of the Class E airspace area at Rapid City Regional Airport, Rapid City, SD, eliminating the Notice to Airmen (NOTAM) part-time status of the Class E surface area airspace, and Class E airspace designated as an extension, at the airport. This is an administrative change to coincide with the FAA's aeronautical database.
Document Number: 2016-02036
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action amends the legal description of the Class E surface area airspace and Class E airspace designated as an extension at Minot International Airport, Minot, ND, eliminating the Notice to Airmen (NOTAM) part-time status, and brings current the geographic coordinates of Minot International Airport to coincide with the FAA's database.
Document Number: 2016-02034
Type: Proposed Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Hollis, OK. Controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures developed at Hollis Municipal Airport, for the safety and management of Instrument Flight Rules (IFR) operations at the airport.
Document Number: 2016-02033
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action amends Class E Airspace at Lynchburg, VA, by adjusting the geographic coordinates at Lynchburg Regional-Preston Glenn Field Airport and Falwell Airport, to be in concert with the FAA's aeronautical database.
Document Number: 2016-02025
Type: Proposed Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Beach, ND. Controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures developed at Beach Airport, for the safety and management of Instrument Flight Rules (IFR) operations at the airport.
Document Number: 2016-02023
Type: Proposed Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to amend Class E Airspace Designated as an Extension to a Class D Surface Area by removing the Notice to Airmen (NOTAM) part time status for Hagerstown Regional Airport-Richard A. Henson Field, Hagerstown, MD. Also, this action would amend Class D and Class E airspace at Hagerstown, MD by recognizing the name change to Hagerstown Regional Airport-Richard A. Henson Field, and updating the geographic coordinates of the airport. This action would enhance the safety and management of Instrument Flight Rules (IFR) operations at the airport.
Document Number: 2016-02022
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
This action establishes 13 high altitude Area Navigation (RNAV) routes (Q-routes) in the western United States. The routes promote operational efficiencies for users and provide connectivity to current and proposed RNAV en route and terminal procedures. The low altitude RNAV route, T-326, published in the Notice of Proposed Rulemaking, requires more coordination and is removed from this rule.
Document Number: 2016-02020
Type: Notice
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
The Federal Aviation Administration (FAA) announces its determination that the Noise Exposure Maps submitted by the Great Falls International Airport Authority for the Great Falls International Airport under the provisions of 40 U.S.C. 47501 et seq. (Aviation Safety and Noise Abatement Act) and 14 CFR 150 are in compliance with applicable requirements.
Document Number: 2016-01962
Type: Proposed Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
We propose to adopt a new airworthiness directive (AD) for DG Flugzeugbau GmbH Model DG-1000T gliders equipped with a Solo Kleinmotoren Model 2350 C engine that would revise AD 2015-09-04. This proposed AD results from 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 engine shaft failure and consequent propeller detachment. We are issuing this proposed AD to require actions to address the unsafe condition on these products.
Document Number: 2016-01827
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by a report of a crack of the forward leg of the left front spar lower chord and cracks on the lower wing skin at three fastener holes common to the nacelle outboard side load fitting. This AD requires repetitive inspections for cracks on the front spar lower chord, inspar skin, and wing skin, and corrective action if necessary. We are issuing this AD to detect and correct fatigue cracking of the forward leg of the front spar lower chord, inspar skin, and wing skin common to the nacelle outboard side load fitting, which could adversely affect the structural integrity of the wing.
Document Number: 2016-00379
Type: Rule
Date: 2016-02-04
Agency: Federal Aviation Administration, Department of Transportation
We are superseding Airworthiness Directive (AD) 2004-20-14, for all Airbus Model A300 B4-2C, B4-103, and B4-203 airplanes; and all Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes. AD 2004-20-14 required repetitive inspections to detect cracking of the splice fitting at fuselage frame (FR) 47 between stringers 24 and 26 (left- and right-hand sides), and corrective actions if necessary. This new AD reduces the inspection compliance time and repetitive inspection intervals, and adds Airbus Model A300 C4-605R Variant F airplanes to the applicability. This AD was prompted by a determination that the inspection compliance time and repetitive inspection interval must be reduced to allow timely detection of cracks in the splice fitting at fuselage FR 47. We are issuing this AD to detect and correct cracking of the splice fitting at fuselage FR 47; such cracking could result in reduced structural integrity of the airplane.
Document Number: 2016-01877
Type: Proposed Rule
Date: 2016-02-03
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to establish Class E airspace at Moriarty, NM. Controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures developed at Moriarty Airport, for the safety and management of Instrument Flight Rules (IFR) operations at the airport.
Document Number: 2016-01864
Type: Rule
Date: 2016-02-03
Agency: Federal Aviation Administration, Department of Transportation
This rule establishes, amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures (ODPs) for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.
Document Number: 2016-01858
Type: Rule
Date: 2016-02-03
Agency: Federal Aviation Administration, Department of Transportation
This rule amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide for the safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.
Document Number: 2016-01857
Type: Rule
Date: 2016-02-03
Agency: Federal Aviation Administration, Department of Transportation
This rule establishes, amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures (ODPs) for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.
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