Federal Aviation Administration April 2021 – Federal Register Recent Federal Regulation Documents

The FAA proposes to adopt a new airworthiness directive (AD) for MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 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 proposed AD was prompted by reports and a design review indicating that there could be possible corrosion on the main landing gear (MLG) outer cylinder at the interface with the gland nut on the shock strut installation and on the forward and aft trunnion pins in the MLG dressed shock strut assembly. This proposed AD would require detailed inspections for corrosion on the MLG outer cylinder assemblies, certain MLG dressed shock strut assemblies, and the MLG outer cylinder at the gland nut threads, thread relief groove, and chamfer; a detailed inspection for the presence of corrosion-inhibiting compound (CIC) on the MLG forward and aft trunnion pins and grease adapter assemblies; applicable corrective actions; application of primer, paint, and CIC as applicable; re-identification of certain part numbers; and marking of the MOD STATUS field of the nameplate of certain parts. The FAA is proposing this AD to address the unsafe condition on these products.

This action proposes to establish Class E domestic en route airspace extending upward from 1,200 feet above the surface at Missoula, MT. This airspace would facilitate vectoring of Instrument Flight Rules (IFR) aircraft and would properly contain IFR aircraft operating on direct routes under the control of Salt Lake City Air Route Traffic Control Center (ARTCC) and Seattle ARTCC. The FAA is proposing this action to enhance the safety and management of IFR operations within the National Airspace System (NAS).

The FAA is adopting a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes; Model CL-600-2C11 (Regional Jet Series 550) airplanes; Model CL-600-2D15 (Regional Jet Series 705) airplanes; Model CL-600- 2D24 (Regional Jet Series 900) airplanes; and Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by a determination that a new or more restrictive airworthiness limitation is necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate a new or more restrictive airworthiness limitation. The FAA is issuing this AD to address the unsafe condition on these products.

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This AD was prompted by reports of the failure of emergency locator transmitter (ELT) antennas. This AD requires repetitive replacements of the ELT antenna and repetitive inspections for damage of the exterior fuselage skin around the ELT antenna attachment area, as specified in a Transport Canada Civil Aviation (TCCA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

These special conditions are issued for the Airbus Helicopters (Airbus) Model H160B helicopter. This model helicopter will have a novel or unusual design feature associated with a 30-minute all engines operating (AEO) power rating. 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.

This action modifies the Class E airspace extending upward from 700 feet above the surface at Meeker Coulter Field Airport, Meeker, CO, by reducing the dimensions of the airspace area. Additionally, this action implements an administrative update to the airport's name.

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.

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Helicopters Deutschland GmbH (AHD) Model BO-105A, BO-105C, BO-105S, and BO-105LS A-3 helicopters equipped with a certain hoist system. This AD was prompted by an uncommanded activation of the hoist cable cutter function on an MBB-BK117 C-1 helicopter, which prompted a design review of the BO105 hoist control grip with coiled cable. This proposed AD would require inspections of the hoist control grip with coiled cable and deactivation of the hoist cuter function, 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.

The FAA is superseding Airworthiness Directive (AD) 2021-04-07 which applied to certain Piper Aircraft, Inc., (Piper) Models PA-46- 350P (Malibu Mirage), PA-46R-350T (Malibu Matrix), and PA-46-500TP (Malibu Meridian) airplanes. AD 2021-04-07 required identifying and correcting nonconforming stall warning heat control systems. Since AD 2021-04-07 was issued, the FAA was notified of an error in the stall warning heat control modification kit part number. This AD retains all of the actions in AD 2021-04-07 and corrects the incorrect modification kit part number. The FAA is issuing this AD to address the unsafe condition on these products.

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 and -1041 airplanes. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in two European Union Aviation Safety Agency (EASA) ADs, which are proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.

This action proposes to amend the Class E airspace extending upward from 700 feet above the surface at Scott City Municipal Airport, Scott City, KS. The FAA is proposing this action as the result of an airspace review caused by the decommissioning of the Scott City non- directional beacon (NDB). The geographic coordinates of the airport would also be updated to coincide with the FAAs aeronautical database.

The FAA proposes to adopt a new airworthiness directive (AD) for all General Electric Company (GE) GEnx-1B64, GEnx-1B64/P1, GEnx- 1B64/P2, GEnx-1B67, GEnx-1B67/P1, GEnx-1B67/P2, GEnx-1B70, GEnx-1B70/ 75/P1, GEnx-1B70/75/P2, GEnx-1B70/P1, GEnx-1B70/P2, GEnx-1B70C/P1, GEnx-1B70C/P2, GEnx-1B74/75/P1, GEnx-1B74/75/P2, GEnx-1B76/P2, GEnx- 1B76A/P2, GEnx-2B67, GEnx-2B67/P, and GEnx-2B67B model turbofan engines. This proposed AD was prompted by an in-service occurrence of loss of engine thrust control resulting in uncommanded high thrust. This proposed AD would require revising the operator's existing FAA- approved minimum equipment list (MEL) by incorporating into the MEL the dispatch restrictions listed in this AD. This proposed AD would also require initial and repetitive replacement of the electronic engine control (EEC) MN4 microprocessor. The FAA is proposing this AD to address the unsafe condition on these products.

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, 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.

The FAA hereby provides notice of intent to release 4.93 acres at the Melbourne International Airport, Melbourne, FL from the conditions, reservations, and restrictions as contained in a Quitclaim Deed agreement between the FAA and the City of Melbourne, dated August 6, 1947. The release of property will allow the City of Melbourne to use the property for other than aeronautical purposes. The property is located located on the northwest corner of West NASA Blvd. and Air Terminal Parkway at the Melbourne International Airport in Brevard County. The parcel is currently designated as surplus property. The property will be released of its federal obligations for the purpose of providing a long-term non-aeronautical lease to a private developer to build a hotel, hotel parking area, and storm water detention pond. The fair market value lease of this parcel has been determined to be $197,570,74. Documents reflecting the Sponsor's request are available, by appointment only, for inspection at the Melbourne International Airport and the FAA Airports District Office.

The FAA is superseding Airworthiness Directive (AD) 2021-04-16 which applied to certain Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. AD 2021-04-16 required a one-time inspection of the landing gear for components with non-conforming threads and removal of any non-conforming threaded hinge pin and main landing gear (MLG) and nose landing gear (NLG) actuator pins. AD 2021-04-16 also prohibited installing certain part-numbered hinge and actuator pins on any helicopter. This AD requires the same actions but corrects erroneous part numbers. This AD was prompted by the discovery that certain part numbers listed in AD 2021-04-16 are incorrect. The FAA is issuing this AD to address the unsafe condition on these products.

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-400, 747-400D, and 747-400F series airplanes. This proposed AD was prompted by reports of burned Boeing Material Specification (BMS) 8-39 urethane foam found in certain locations on the airplane; investigation revealed that the fire- retardant properties degrade with age. This proposed AD would require inspecting the insulation blankets in certain areas of the forward cargo compartment for exposed BMS 8-39 urethane foam, not encapsulated by a protective fire resistant barrier, and for seal integrity, and replacing the BMS 8-39 urethane foam and seal if necessary. The FAA is proposing this AD to address the unsafe condition on these products.

The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Model SA330J helicopters, all serial numbers. This proposed AD was prompted by reports of the failure of the lower bearing cage of the main rotor hub (MRH) flapping hinges and of the presence of metallic particles at the bottom of a drag hinge. This proposed AD would require repetitive inspections of the MRH chip detectors, or for helicopters not equipped with chip detectors, repetitive inspections of the oil for contamination by metallic particles, and corrective actions if necessary, 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.

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 reports of one or both roll control input modules (RCIMs) being incorrectly installed. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate certain aircraft maintenance manual (AMM) tasks. The FAA is issuing this AD to address the unsafe condition on these products.

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by a report that certain airplanes have navigation units with outdated magnetic variation (MagVar) tables. This proposed AD would require revising the existing airplane flight manual (AFM) and applicable corresponding operational procedures to update the flight management system (FMS) limitations. The FAA is proposing this AD to address the unsafe condition on these products.

The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 777 airplanes. This proposed AD was prompted by a report that an operator found solid rivets with missing heads at the left buttock line 25 on the sloping pressure deck web. This proposed AD would require doing a detailed inspection of the left and right side sloping pressure deck at certain stations for any damaged solid rivets, and applicable on-condition actions. The FAA is proposing this AD to address the unsafe condition on these products.

This action proposes to modify the Class E airspace extending upward from 1,200 feet above the surface at Dillon Airport, Dillon, MT. This action would ensure the safety and management of instrument flight rules (IFR) operations at the airport.

This action proposes to amend the Class E airspace at Huron Regional Airport, Huron, SD. The FAA is proposing this action as the result of an airspace review caused by the decommissioning of the Huron VHF omnidirectional range (VOR) navigation aid as part of the VOR Minimum Operational Network (MON) Program. The geographic coordinates of the airport would also be updated to coincide with the FAA's aeronautical database.

This action proposes to establish Class E domestic en route airspace extending upward from 1,200 feet above the surface at Great Falls, MT. This airspace would facilitate vectoring of Instrument Flight Rules (IFR) aircraft and it would properly contain IFR aircraft operating on direct routes under the control of Salt Lake City Air Route Traffic Control Center (ARTCC). The FAA is proposing this action to enhance the safety and management of IFR operations within the National Airspace System (NAS).

In accordance with the Paperwork Reduction Act of 1995, the Federal Aviation Administration (FAA) invites public comments about our intention to request the Office of Management and Budget's (OMB) approval to renew an information collection. The collection involves information on voluntary airport noise compatibility programs. The information to be collected is necessary because noise compatibility program measures are eligible for Federal grants in-aid if they are provided to FAA for review and approval in advance. The respondents are airport sponsors that voluntarily submit noise exposure maps and noise compatibility programs to the FAA for review and approval.

The FAA proposes to adopt a new airworthiness directive (AD) for Bell Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) (Bell) Model 429 helicopters. This proposed AD was prompted by the identification of certain parts needing life limits and certification maintenance requirement (CMR) tasks. This proposed AD would require establishing life limits and CMR tasks for various parts. Depending on the results of the CMR tasks, this proposed AD would require corrective action. The FAA is proposing this AD to address the unsafe condition on these products.