Department of Transportation August 2016 – Federal Register Recent Federal Regulation Documents
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Eighteenth Meeting of SC-227 Navigation Information on Electronic Maps
The FAA is issuing this notice to advise the public of a meeting of Eighteenth Meeting of SC-227 Navigation Information on Electronic Maps.
Qualification of Drivers; Exemption Applications; Vision
FMCSA announces receipt of applications from 12 individuals for exemption from the vision requirement in the Federal Motor Carrier Safety Regulations. They are unable to meet the vision requirement in one eye for various reasons. The exemptions will enable these individuals to operate commercial motor vehicles (CMVs) in interstate commerce without meeting the prescribed vision requirement in one eye. If granted, the exemptions would enable these individuals to qualify as drivers of commercial motor vehicles (CMVs) in interstate commerce.
Agency Information Collection Activities: Request for Comments for a New Information Collection
The FHWA invites public comments about our intention to request the Office of Management and Budget's (OMB) approval for a new information collection, which is summarized below under SUPPLEMENTARY INFORMATION. We are required to publish this notice in the Federal Register by the Paperwork Reduction Act of 1995.
Qualification of Drivers; Exemption Applications; Vision
FMCSA announces its decision to exempt 30 individuals from the vision requirement in the Federal Motor Carrier Safety Regulations (FMCSRs). They are unable to meet the vision requirement in one eye for various reasons. The exemptions will enable these individuals to operate commercial motor vehicles (CMVs) in interstate commerce without meeting the prescribed vision requirement in one eye. The Agency has concluded that granting these exemptions will provide a level of safety that is equivalent to or greater than the level of safety maintained without the exemptions for these CMV drivers.
Eighty-Sixth SC-147 Traffic Collision & Avoidance Committee Plenary
The FAA is issuing this notice to advise the public of a meeting of Eighty-Sixth SC-147 Traffic Collision & Avoidance Committee Plenary.
Request for Comments of a Previously Approved Information Collection
In compliance with the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.), this notice announces that the Information Collection Request (ICR) abstracted below is being forwarded to the Office of Management and Budget (OMB) for review and comments. A Federal Register Notice with a 60-day comment period soliciting comments on the following information collection was published on June 2, 2016 (Federal Register 35440, Vol. 81, No.106).
Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes
We are revising an earlier NPRM for all PILATUS AIRCRAFT LTD. Models PC-12, PC-12/45, PC-12/47, and PC-12/47E airplanes that would supersede AD 2014-22-01. 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 a need to incorporate new revisions into the Limitations section, Chapter 4, of the FAA-approved maintenance program (e.g., maintenance manual). We are issuing this proposed AD to require actions to address the unsafe condition on these products.
Airworthiness Directives; The Boeing Company Airplanes
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200 and -300ER series airplanes. This AD requires replacing the low-pressure oxygen flex hoses with new non- conductive low-pressure oxygen flex hoses in the gaseous passenger oxygen system in airplanes equipped with therapeutic oxygen. This AD was prompted by a determination that the low-pressure oxygen flex hoses in the gaseous passenger oxygen system can potentially be conductive. We are issuing this AD to prevent electrical current from passing through the low-pressure oxygen flex hoses in the gaseous passenger oxygen system, which can cause the flex hoses to melt or burn, and a consequent oxygen-fed fire in the passenger cabin.
Airworthiness Directives; Bombardier, Inc. Airplanes
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by the need for more stringent inspection requirements for certain affected components. This AD requires revising the maintenance or inspection program to incorporate certain revised airworthiness limitations (AWL) and require repairs of affected components. We are issuing this AD to detect and correct fatigue cracking in the affected components; such cracking could result in loss of structural integrity.
Airworthiness Directives; Airbus Defense and Space S.A. (Formerly Known as Construcciones Aeronauticas, S.A.) Airplanes
We are adopting a new airworthiness directive (AD) for all Airbus Defense and Space S.A. Model CN-235, CN-235-200, and CN-235-300 airplanes. This AD was prompted by reports of main landing gear (MLG) access doors detaching from the airplane as a result of excessive vibration and metal fatigue in the attach fittings. This AD requires modification of the MLG access door by replacing seals in the MLG fairing and, for certain airplanes, adding an additional bolt. We are issuing this AD to prevent a fracture in the MLG access door associated with excessive vibration and metal fatigue in the attach fittings. This condition could lead to MLG access door detachment and consequent impact of flight controls, resulting in reduced control of an airplane.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, -200, and -300 series airplanes; and Airbus Model A340-500, and -600 series airplanes. This proposed AD was prompted by reports that non-conforming aluminum alloy was used to manufacture several structural parts on the inboard flap. This proposed AD would require identification of the potentially affected inboard flap parts, a one-time eddy current inspection to identify which material the parts are made of, and depending on findings, replacement with serviceable parts. We are proposing this AD to detect and correct structural parts of inboard flaps made of nonconforming aluminum alloy, which could result in reduced structural integrity of the airplane.
Airworthiness Directives; Bombardier, Inc. Airplanes
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by in-service reports of passenger door tensator spring failures, and qualification testing indicating that non-conforming tensator springs could be susceptible to failure prior to reaching their safe-life limit. This AD requires revising the maintenance or inspection program to incorporate certain temporary revisions, and replacing the passenger door tensator springs with new springs. We are issuing this AD to prevent tensator spring failure, resulting in the inability to open the main passenger door, which could impede evacuation in the event of an emergency.
Airworthiness Directives; The Boeing Company Airplanes
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD was prompted by reports of heavy corrosion and chrome damage on the forward and aft trunnion pin assemblies of the right and left main landing gears (MLGs). This AD requires repetitive lubrication of the forward and aft trunnion pin assemblies of the right and left MLGs; repetitive inspections of these assemblies for corrosion and chrome damage, and related investigative and corrective actions if necessary; and installation of new or modified trunnion pin assembly components, which will terminate the repetitive lubrication and repetitive inspections. We are issuing this AD to detect and correct heavy corrosion and chrome damage on the forward and aft trunnion pin assemblies of the right and left MLGs, which could result in cracking of these assemblies and collapse of the MLGs.
Airworthiness Directives; Bombardier, Inc. Airplanes
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes. This AD was prompted by two in-service incidents of a loss of all air data information in the flight deck. This AD requires a revision of the airplane flight manual (AFM) emergency procedures section to provide procedures to guide the crew on how to stabilize the airplane airspeed and attitude for continued safe flight when a loss of all air data information has occurred in the flight deck. We are issuing this AD to prevent loss of control when a loss of all air data information has occurred in the flight deck.
Lease and Interchange of Vehicles; Motor Carriers of Passengers
FMCSA announces its intent to issue a rulemaking concerning revisions to its May 27, 2015, final rule titled ``Lease and Interchange of Vehicles; Motor Carriers of Passengers.'' The Agency received numerous petitions for reconsideration of the final rule and determined that amendments should be considered in response to some of the petitions. The aspects of the 2015 final rule to be reconsidered are discussed later in this document. In addition, FMCSA will hold a roundtable discussion on the scope of the issues to be addressed in the forthcoming rulemaking. The meeting will be public and will seek public input regarding the assignment of responsibility for safety violations to the correct party. Individuals with diverse experience, expertise, and perspectives are encouraged to attend. If all comments have been exhausted prior to the end of the session, the session may conclude early. The Agency intends to complete any regulatory action(s) taken in response to the petitions before January 1, 2018.
Hazardous Materials: Notice of Applications for Special Permits
In accordance with the procedures governing the application for, and the processing of, special permits from the Department of Transportation's Hazardous Material Regulations (49 CFR part 107, subpart B), notice is hereby given that the Office of Hazardous Materials Safety has received the application described herein. Each mode of transportation for which a particular special permit is requested is indicated by a number in the ``Nature of Application'' portion of the table below as follows: 1Motor vehicle, 2Rail freight, 3Cargo vessel, 4Cargo aircraft only, 5Passenger-carrying aircraft.
Delayed Special Permit Applications
In accordance with the requirements of 49 U.S.C. 5117(c), PHMSA is publishing the following list of special permit applications that have been in process for 180 days or more. The reason(s) for delay and the expected completion date for action on each application is provided in association with each identified application.
Hazardous Materials: Notice of Applications for Special Permits
In accordance with the procedures governing the application for, and the processing of, special permits from the Department of Transportation's Hazardous Material Regulations (49 CFR part 107, subpart B), notice is hereby given that the Office of Hazardous Materials Safety has received the application described herein. Each mode of transportation for which a particular special permit is requested is indicated by a number in the ``Nature of Application'' portion of the table below as follows: 1Motor vehicle, 2Rail freight, 3Cargo vessel, 4Cargo aircraft only, 5Passenger-carrying aircraft.
Agency Requests for Renewal of a Previously Approved Information Collection(s): Information To Determine Seamen's Reemployment Rights-National Emergency
The Maritime Administration (MARAD) 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 determine if U.S. civilian mariners are eligible for re-employment rights under the Maritime Security Act of 1996. We are required to publish this notice in the Federal Register by the Paperwork Reduction Act of 1995, Public Law 104-13.
Request for Comments of a Previously Approved Information Collection
In compliance with the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.), this notice announces that the Information Collection Request (ICR) abstracted below is being forwarded to the Office of Management and Budget (OMB) for review and comments. A Federal Register Notice with a 60-day comment period soliciting comments on the following information collection was published on June 2, 2016 (35439 Federal Register, Vol. 81, No. 106).
Requested Administrative Waiver of the Coastwise Trade Laws: Vessel AFTER HOURS; Invitation for Public Comments
As authorized by 46 U.S.C. 12121, the Secretary of Transportation, as represented by the Maritime Administration (MARAD), is authorized to grant waivers of the U.S.-build requirement of the coastwise laws under certain circumstances. A request for such a waiver has been received by MARAD. The vessel, and a brief description of the proposed service, is listed below.
Notice of National Grain Car Council Meeting
Notice is hereby given of a meeting of the National Grain Car Council (NGCC), pursuant to the Federal Advisory Committee Act, 5 U.S.C., app. 2 10(a)(2).
Assumption of Authorities
The Fixing America's Surface Transportation (FAST) Act builds on the authorities and requirements in the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) and the Moving Ahead for Progress in the 21st Century Act (MAP-21). The FAST Act also builds on efforts under FHWA's Every Day Counts to accelerate delivery of surface transportation projects by institutionalizing best practices and expediting complex infrastructure projects. The Secretary, in cooperation with the States, must submit recommendations to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Environment and Public Works of the Senate recommendations on legislation to permit the assumption of additional authorities by States. The FAST Act specifically asks for recommendations in the areas of real estate acquisition and project design. In order to implement section 1316 of the FAST Act, FHWA is soliciting feedback from States and other stakeholders on additional authorities to assume under title 23, including real estate acquisition and project design. The FHWA will collect suggestions during a 60-day period. At the end of that period, FHWA will assess suggestions prior to providing a Report to Congress.
Commercial Space Transportation Reusable Launch Vehicle and Reentry Licensing Regulations; Technical Amendment
The FAA is publishing this action to correct minor, editorial errors in chapter III, part 431. The errors occurred in the Commercial Space Transportation Reusable Launch Vehicle and Reentry Licensing Regulations final rule, published in the Federal Register on September 19, 2000. That final rule amended commercial space transportation regulations for the launch and reentry of reusable launch vehicles (RLVs) to establish operational requirements for launches of RLVs and to implement the FAA's reentry licensing authority by prescribing requirements for obtaining a license to launch and reenter an RLV, to reenter a reentry vehicle, and to operate a reentry site. In that final rule, the FAA inadvertently made minor errors, which this technical amendment corrects.
Fixing America's Surface Transportation Act-Productive and Timely Expenditure of Funds
By this notice, FHWA announces a new Web site providing information and guidance on the use of programmatic approaches to project delivery in accordance with section 1421 of the Fixing America's Surface Transportation (FAST) Act (``Productive and Timely Expenditure of Funds''). The FHWA requests comments on what procedures, techniques, programmatic approaches, or best practices should be considered for inclusion on the Web site. In addition, FHWA is requesting comment on any information resources that are readily available regarding practices and procedures that avoid unnecessary delays, minimize cost overruns, and ensure the effective use of Federal funds.
Licensing and Safety Requirements for Launch; Technical Amendment
The FAA is publishing this action to correct minor, editorial errors in chapter III, parts 415 and 417. These errors occurred in the Licensing and Safety Requirements for Launch final rule, published in the Federal Register on August 25, 2006. That final rule amended the commercial space transportation regulations governing the launch of expendable launch vehicles to address licensing and safety requirements for a launch. In that final rule, the FAA inadvertently made minor errors, which this technical amendment corrects.
Petition for Exemption; Summary of Petition Received; Fusion Flight, LLC
This notice contains a summary of a petition seeking relief from specified requirements of 14 CFR. The purpose of this notice is to improve the public's awareness of, and participation in, this aspect of FAA's regulatory activities. 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.
Federal Aviation Administration Commercial Space Transportation Advisory Committee-Public Teleconference
Pursuant to the Federal Advisory Committee Act, notice is hereby given of a teleconference of the Commercial Space Transportation Advisory Committee (COMSTAC). The Teleconference will take place on Wednesday, September 14, 2016 starting at 3:00 p.m. Eastern Standard Time and will last approximately one hour. The agenda and call-in number will be posted at least one week in advance at https:// www.faa.gov/go/ast. The purpose of this teleconference is to review draft legislation proposed by Representative Jim Bridenstine, Oklahoma, 1st District, that would authorize the Department of Transportation to perform an enhanced version of its current payload review process and consult with its interagency partners to ensure the compliance of proposed commercial space activities with U.S. treaty obligations, and national security and foreign policy interests. Examples of the types of activities that could fall under this authority include commercial space stations, satellite servicing, space resource utilization, and operations beyond Earth orbit. The FAA recently used an ad-hoc version of this approach to authorize a U.S. company to carry out the first private mission on the Moon. Interested members of the public may submit relevant written statements for the COMSTAC members to consider under the advisory process. Statements may concern the issues and agenda items mentioned above and/or additional issues that may be relevant for the U.S. commercial space transportation industry. Interested parties wishing to submit written statements should contact Michael Beavin, COMSTAC Executive Director, (the Contact Person listed below) in writing (mail or email) by September 9, 2016, so that the information can be made available to COMSTAC members for their review and consideration before the September 14 teleconference. Written statements should be supplied in the following formats: one hard copy with original signature and/or one electronic copy via email. An agenda will be posted on the FAA Web site at www.faa.gov/go/ast. Individuals who plan to participate and need special assistance should inform the Contact Persons listed below in advance of the meeting.
Noise Exposure Map Notice for Baltimore/Washington International Thurgood Marshall Airport, Anne Arundel County, Maryland
The Federal Aviation Administration (FAA) announces its determination that the noise exposure maps submitted by the Maryland Aviation Administration for Baltimore/Washington International Thurgood Marshall 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.
Waiver of Aeronautical Land-Use Assurance: Marshall Memorial Municipal Airport (MHL), Marshall, MO
The Federal Aviation Administration (FAA) is considering a proposal from the City of Marshall (sponsor), Marshall, MO, to release a 15.42 acres of land from the federal obligation dedicating it to aeronautical use and to authorize this parcel to be used for revenue-producing, non- aeronautical purposes.
Qualification of Drivers; Exemption Applications; Diabetes Mellitus
FMCSA confirms its decision to exempt 65 individuals from its rule prohibiting persons with insulin-treated diabetes mellitus (ITDM) from operating commercial motor vehicles (CMVs) in interstate commerce. The exemptions enable these individuals to operate CMVs in interstate commerce.
Qualification of Drivers; Exemption Applications; Diabetes Mellitus
FMCSA confirms its decision to exempt 70 individuals from its rule prohibiting persons with insulin-treated diabetes mellitus (ITDM) from operating commercial motor vehicles (CMVs) in interstate commerce. The exemptions enable these individuals to operate CMVs in interstate commerce.
Qualification of Drivers; Exemption Applications; Diabetes Mellitus
FMCSA confirms its decision to exempt 68 individuals from its rule prohibiting persons with insulin-treated diabetes mellitus (ITDM) from operating commercial motor vehicles (CMVs) in interstate commerce. The exemptions enable these individuals to operate CMVs in interstate commerce.
Qualification of Drivers; Exemption Applications; Diabetes Mellitus
FMCSA announces receipt of applications from 37 individuals for exemption from the prohibition against persons with insulin-treated diabetes mellitus (ITDM) operating commercial motor vehicles (CMVs) in interstate commerce. If granted, the exemptions would enable these individuals with ITDM to operate CMVs in interstate commerce.
Qualification of Drivers; Exemption Applications; Diabetes Mellitus
FMCSA confirms its decision to exempt 57 individuals from its rule prohibiting persons with insulin-treated diabetes mellitus (ITDM) from operating commercial motor vehicles (CMVs) in interstate commerce. The exemptions enable these individuals to operate CMVs in interstate commerce.
Airworthiness Directives; The Boeing Company Airplanes
The FAA withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD), which would have applied to certain The Boeing Company Model 737-700, -800, and -900ER series airplanes. The NPRM would have required repetitive inspections to detect cracking in the crown skin panel assembly. The NPRM would also have provided optional terminating action for the repetitive inspections. Since the NPRM was issued, all affected airplanes worldwide have had applicable terminating actions accomplished, and one airplane was mistakenly included in the applicability. Accordingly, the NPRM is withdrawn.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 series airplanes; Model A300 B4-600, B4-600R, and F4- 600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes); and Model A310 series airplanes. This proposed AD was prompted by reports of failure of an aft hinge bolt assembly in the nose landing gear (NLG) aft doors. This proposed AD would require replacement of the aft hinge bolt assembly in the left and right NLG aft doors, with new aft hinge bolt assemblies. We are proposing this AD to prevent failure of an aft hinge bolt assembly in an NLG aft door while the airplane is in flight, which could lead to an in-flight loss of an NLG aft door, and damage to the airplane.
Airworthiness Directives; Bombardier, Inc. Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of interior emergency lights remaining ``ON'' following routine operational checks of the emergency light system. We are proposing this AD to require changing the wiring gauge for the affected emergency lights power supplies wiring to prevent overheating in the wires. Overheating can damage the wire insulation, causing a fire.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-603, B4-620, and B4-622 airplanes; Model A300 B4- 605R and A300 B4-622R airplanes; and Model A300 C4-605R Variant F airplanes. This proposed AD was prompted by an in-service detection of cracks in the fuselage skin lap joints. This proposed AD would require an ultrasonic inspection of certain skin lap joints, and repair if necessary. We are proposing this AD to detect and correct cracks in certain skin lap joints. Such cracking could result in reduced structural integrity of the airplane.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (Embraer) Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Empresa Brasileira de Aeronautica S.A. (Embraer) Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135BJ, -135ER, - 135KE, -135KL, and -135LR airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP airplanes. This proposed AD was prompted by reports of main airspeed indication discrepancies during flight; these discrepancies resulted from ice blockages in certain pitot total pressure lines. This proposed AD would require an inspection for tube misalignment of the pitot number 1 and pitot number 2 tube assembly lines, and corrective actions if necessary; installation or replacement (as applicable) of a tube ribbon heater on the pitot number 1 and pitot number 2 tube assembly lines; and revision of the airplane flight manual (AFM) to provide certain procedures and airspeed tables for the flightcrew. We are proposing this AD to detect and correct water accumulating and freezing in the pitot number 1 and pitot number 2 total pressure lines, which could result in erroneous main airspeed indications and consequent reduced ability of the flightcrew to maintain safe flight and landing of the airplane.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-400, -400D, and -400F series airplanes. This proposed AD was prompted by widespread corrosion damage that was found on the skin inner surface along the upper bulkhead at certain stations between certain stringers. This proposed AD would require repetitive inspections of the fuselage crown skin inner surface, and related investigative and corrective actions if necessary. This AD would also allow for terminating actions for some of the repetitive inspections. We are proposing this AD to detect and correct cracks and corrosion on the crown skin inner surface. If the cracks or corrosion are not repaired, the cracks can rapidly join together and can cause a sudden decompression and loss of structural integrity of the airplane.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-223F, -223, -321, -322, and -323 airplanes. The proposed AD was prompted by fatigue load analysis that determined the need for certain reduced inspection intervals and updated torque values of the forward mount pylon bolts. This proposed AD would require repetitive torque checks to determine if there are any loose or broken forward engine mount bolts, and, if necessary, replacement of all four forward engine mount bolts and associated nuts, inspection of the forward mount assembly, and repair. We are proposing this AD to detect and correct loose or broken bolts, which could lead to engine detachment in flight, and damage to the airplane.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 767-200 and -300 series airplanes. This proposed AD was prompted by a report of a fire in the bilge area of the cargo compartment that burned through the insulation blankets that were intended to prevent smoke from migrating behind the cargo compartment sidewall liners and upward into the main cabin. This proposed AD would require replacing the cargo compartment insulation blankets on the left and right sides with new insulation blankets that incorporate fire stops. We are proposing this AD to prevent a fire in the bilge area of the cargo compartment burning through the insulation blankets and consequently allowing smoke to migrate behind the cargo compartment sidewall liners and upward into the main cabin.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the fuselage skin is subject to widespread fatigue damage (WFD). This proposed AD would require modification of the lap joint, including related investigative actions and corrective actions if necessary. This proposed AD also would require repetitive post-modification inspections for cracking of the skin at critical fastener rows, and corrective actions if necessary. We are proposing this AD to detect and correct cracks at the lap joint skin that could link up and result in rapid decompression and loss of structural integrity of the airplane.
Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
We propose to adopt a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This proposed AD would require removing from service the tail gearbox center housing (housing) when it has 12,200 or more hours time-in-service (TIS). This proposed AD is prompted by fatigue analysis conducted by Sikorsky that determined the housing required a retirement life. The proposed actions are intended to prevent a crack in the housing, which could lead to loss of tail rotor drive and loss of helicopter control.
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 747-8 and 747-8F series airplanes. This proposed AD was prompted by reports of damaged vapor seals, block seals, and heat shield seals on the outboard pylons between the engine strut and aft fairing. This proposed AD would require repetitive inspections for heat damage of the vapor seals between the engine strut and aft fairing, and replacement of the seals with new seals if necessary. We are proposing this AD to detect and correct heat damage to the vapor seals between the engine strut and aft fairing. Such damage could allow flammable fluid leakage into the aft fairing, which could result in an uncontrolled fire in the engine strut.
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