Federal Aviation Administration July 2023 – Federal Register Recent Federal Regulation Documents

The FAA proposes to adopt a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000-A2, Trent 1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 engines. This proposed AD was prompted by reports of cracking and separation of certain low-pressure turbine (LPT) stage 1 blade assemblies. This proposed AD would require initial and repetitive inspections of affected LPT stage 1 blade assemblies for cracking or separation and, depending on the results of the inspections, reduction of the inspection interval or replacement of the LPT stage 1 blade set and disk, 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 superseding Airworthiness Directive (AD) 2020-09-11 and AD 2022-21-12, which applied to all Fokker Services B.V. Model F28 Mark 0070 and 0100 airplanes. AD 2020-09-11 and AD 2022-21-12 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2022-21-12, new or more restrictive tasks and limitations have been introduced. This AD continues to require the actions of AD 2022-21-12, and also requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations; 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.

The FAA proposes to supersede Airworthiness Directive (AD) 2021-10-20, which applies to certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72-212A airplanes. AD 2021-10-20 requires revising the existing aircraft flight manual (AFM) and applicable corresponding operational procedures to update a systems limitation, limiting dispatch with certain equipment inoperative, performing an operational test of a certain contactor and an electrical test of a certain battery toggle switch, and performing corrective actions if necessary. Since the FAA issued AD 2021-10-20, new procedures for modifying the wiring and replacing the battery toggle switch have been developed that would terminate the AD requirements. This proposed AD would continue to require certain actions in AD 2021- 10-20, and would require modifying the battery toggle switch wiring and replacing the battery toggle switch, and would revise the applicability to include additional airplanes, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). This proposed AD would also prohibit the installation of affected parts. The FAA is proposing this AD to address the unsafe condition on these products.

This notice announces the FAA's intent to designate Horizon Instruments, Inc., Supplemental Type Certificate (STC) No. SA5842NW as abandoned and make the related engineering data available upon request. The FAA has received a request to provide engineering data concerning this STC. The FAA has been unsuccessful in contacting Horizon Instruments, Inc., concerning the STC. This action is intended to enhance-aviation safety.

The FAA proposes to supersede Airworthiness Directive (AD) 2022-18-14, which applies to certain Airbus SAS Model A330-200 series, A330-200 Freighter series, A330-300 series, A330-800 series, and A330- 900 series airplanes. AD 2022-18-14 requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2022-18-14, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This proposed AD would continue to require the actions in AD 2022-18-14, and would require revising the existing maintenance or inspection program, as applicable, to incorporate additional new or more restrictive airworthiness limitations, as specified in two European Union Aviation Safety Agency (EASA) ADs, which are proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

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.

This action establishes Canadian Area Navigation (RNAV) route T-719, in the vicinity of Sitka, AK. This action is in support of a large and comprehensive RNAV T-route modernization project for the state of Alaska.

This action proposes to amend Class D airspace, and Class E airspace extending upward from 700 feet above the surface for William P. Gwinn Airport, Jupiter, FL. This action would increase the radius of the Class D airspace, as well as amend verbiage in the Class D description. This action would also update the geographic coordinates for the Class E airspace extending upward from 700 feet above the surface, and revoke Class E airspace designated as an extension to a Class D surface area.

This action amends United States Area Navigation (RNAV) route T-226 in the vicinity of Central, AK, in support of a large and comprehensive T-route modernization project for the state of Alaska.

The FAA proposes to supersede Airworthiness Directive (AD) 2017-19-22, which applies to British Aerospace Regional Aircraft Jetstream Series 3101 and Jetstream Model 3201 airplanes. AD 2017-19-22 requires incorporating BAE Systems' Corrosion Prevention and Control program into the Airworthiness Limitations Section (ALS) of the existing instructions for continued airworthiness (ICA) for your airplane, which adds new and more restrictive inspections for corrosion that include inspecting the door hinges/supporting structure and attachment bolts for the main spar joint and engine support, and the rudder hinge location on the vertical stabilizer, and applicable corrective actions. Since the FAA issued AD 2017-19-22, the Civil Aviation Authority (CAA) of the United Kingdom superseded the mandatory continuing airworthiness information (MCAI) issued by the European Aviation Safety Agency (EASA) to correct an unsafe condition on these products. This proposed AD would require revising the ALS of the existing ICA for your airplane. The FAA is proposing this AD to address the unsafe condition on these products.

This action amends one and establishes three low altitude United States Area Navigation (RNAV) routes. The purpose of the new RNAV routes is to expand the availability of the enroute structure and provide additional RNAV routing within the National Airspace System (NAS) in support of transitioning it from ground-based to satellite- based navigation.

A draft policy statement would state that proposed type design changes that would materially alter safety critical information have the potential to affect airworthiness, and therefore do not qualify as minor design changes.

This action amends United States Area Navigation (RNAV) route T-225 in the vicinity of Galena, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.

This action establishes United States Area Navigation (RNAV) route T-481 in the vicinity of Sitka, AK. This action is in support of a large and comprehensive RNAV T-route modernization project for the state of Alaska. Due to an error, this route was originally proposed as number T-383, which is already assigned as a RNAV T-Route in the vicinity of Gopher, MN. The FAA assigns number T-481 to this T-Route in the vicinity of Sitka, AK.

This action prohibits certain flight operations in the Kabul Flight Information Region (FIR) (OAKX) at altitudes below Flight Level (FL) 320 by all: U.S. air carriers; U.S. commercial operators; persons exercising the privileges of an airman certificate issued by the FAA, except when such persons are operating U.S.-registered aircraft for a foreign air carrier; and operators of U.S.-registered civil aircraft, except when the operator of such aircraft is a foreign air carrier. The FAA finds this action necessary to address hazards to persons and aircraft engaged in such flight operations due to the risk posed by violent extremist and militant activity and the lack of adequate risk mitigation capabilities to counter such activity. However, the FAA has determined that U.S. civil overflights of the Kabul FIR (OAKX) at altitudes at and above FL320 may resume due to diminished risks to U.S. civil aviation operations at those altitudes. This action also provides information regarding the approval and exemption processes for this Special Federal Aviation Regulation (SFAR), consistent with other recently published flight prohibition SFARs.

This action amends six United States Area Navigation (RNAV) Q- routes in the eastern United States. This action supports the Northeast Corridor Atlantic Coast Routes (NEC ACR) Optimization Project to improve the efficiency of the National Airspace System (NAS).

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900 and -900ER airplanes. This proposed AD was prompted by reports of cracks in the forward galley door cutout forward upper corner bear strap. It has been determined that the cracks were caused by high operating stresses in the fuselage skin door cutout corner area due to stress concentration at the door cutout. This proposed AD would require an inspection of the fuselage skin and the bear strap at the forward galley door cutout forward upper corner for existing repairs, and applicable related investigative and corrective inspections. The FAA is proposing this AD to address the unsafe condition on these products.

The FAA is superseding Airworthiness Directive (AD) 2021-05-03 for certain Airbus Helicopters Model EC225LP helicopters. AD 2021-05-03 required various inspections of a certain part-numbered left-hand (LH) engine fuel supply (fuel supply) hose and depending on the inspection results, reinstalling or removing the fuel supply hose from service. AD 2021-05-03 also required installing an improved part and prohibited installing an affected fuel supply hose on any helicopter unless it was installed by following certain procedures. Since the FAA issued AD 2021-05-03, there were reports of difficulties using an adjusting tool to install the improved fuel supply hose. This AD continues to require the actions of AD 2021-05-03, expands the applicability, expands the parts installation limitations, and requires using an improved adjusting tool and updated procedures. This AD also updates certain compliance times and clarifies certain requirements. The FAA is issuing this AD to address the unsafe condition on these products.

This action amends United States Area Navigation (RNAV) route T-271, in the vicinity of Iliamna, AK in support of a large and comprehensive T-route modernization project for the state of Alaska.

This action amends United States Area Navigation (RNAV) route T-260, in the vicinity of Nome, AK. The RNAV route amendments are necessary due to the planned decommissioning of the Non-Directional Beacon (NDB) portion of the Tin City, AK (TNC), NDB/Distance Measuring Equipment (NDB/DME) and the Point Hope, AK, (PHO) NDB. Although the Tin City, AK, (TNC) NDB will decommission, the co-located Distance Measuring Equipment (DME) will remain for use within the National Airspace System (NAS).

This action establishes United States Area Navigation (RNAV) T-route T-379, in the vicinity of Discovery, AK, in support of a large and comprehensive T-route modernization project for the state of Alaska.

This action amends the Class E airspace designated as an extension to a Class C surface area and Class E airspace extending upward from 700 feet above the surface in Nashville, TN, as the result of a Class C Airspace modification and a biennial evaluation. This action reduces the Class E airspace designated as an extension to the Nashville International Airport Class C airspace. This action also extends the Class E airspace extending upward from 700 feet above the surface surrounding Music City Executive Airport and reduces the Class E airspace extending upward from 700 feet above the surface surrounding Lebanon Municipal Airport, Murfreesboro Municipal Airport, and John C. Tune Airport.

The FAA is superseding Airworthiness Directive (AD) 2022-19-08 which applied to all Airbus Helicopters Model SA341G and SA342J helicopters. AD 2022-19-08 was prompted by a report of manufacturing defects on multiple tail rotor blades (TRBs) and required visually inspecting certain part-numbered TRBs for the presence of a linear indication, and, depending on the inspection results, fluorescent penetrant inspecting the TRB and further corrective actions if necessary. AD 2022-19-08 also prohibited installing an affected TRB unless certain requirements had been met. This AD was prompted by the determination that parts that have accumulated more than 500 flight hours (FH) since new are also affected by the unsafe condition. In addition, the defined compliance time for the visual inspection of the root area of each affected part was determined to be too strict. This AD retains certain requirements of AD 2022-19-08, includes all TRBs in the inspection requirements, and increases a compliance time as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA previously sent this AD as an emergency AD to all known U.S. owners and operators of these helicopters. The FAA is issuing this AD to address the unsafe condition on these products.

The FAA proposes to supersede Airworthiness Directive (AD) 2023-04-10, which applies to all Dassault Aviation Model MYSTERE-FALCON 900 airplanes. AD 2023-04-10 requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2023-04- 10, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This proposed AD would continue to require the actions in AD 2023-04-10 and would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, 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.

These special conditions are issued for the Textron Aviation, Inc. (Textron) Model 560XL(XLS+) 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 associated with the installation of a digital system that contains a wireless and hardwired network with hosted application functionality that allows access, from a source internal to the airplane, to the airplane's internal electronic component. 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.