Department of Transportation July 5, 2005 – Federal Register Recent Federal Regulation Documents
Results 1 - 15 of 15
Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes. This proposed AD would require modification of certain wire bundles located above the center fuel tank. This proposed AD is prompted by the results of fuel system reviews conducted by the manufacturer. We are proposing this AD to prevent chafed wire bundles near the center fuel tank, which could cause electrical arcing through the tank wall and ignition of fuel vapor in the fuel tank, and result in a fuel tank explosion.
Airworthiness Directives; Boeing Model 767-400ER Series Airplanes; and Model 777-200 and -300 Series Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Model 767-400ER series airplanes; and Model 777-200 and - 300 series airplanes. This proposed AD would require, for certain airplanes, repetitive testing of the fill and safety fittings of the fire extinguishing bottles in the forward cargo compartment for leaks; and repetitive application of a corrosion inhibiting compound (CIC) or replacement of the fire extinguishing bottles with reworked fire extinguishing bottles, as necessary. For all airplanes, this proposed AD would require replacement of the fire extinguishing bottles with reworked fire extinguishing bottles, which would end the repetitive tests and CIC applications if applicable. This proposed AD is prompted by failure of the safety fittings for the fire extinguishing bottles. We are proposing this AD to prevent failure of the safety fittings for the fire extinguishing bottles due to corrosion, which could result in leakage of extinguishing agent. If a fire occurs in the cargo bay, the fire extinguishing bottles could have less than enough extinguishing agent to control a fire.
Airworthiness Directives; Boeing Model 737 Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 737 airplanes. This proposed AD would require modifying the elevator input torque tube assembly. This proposed AD is prompted by a report of a restriction in the pilots' elevator input control system. We are proposing this AD to prevent loss of elevator control and consequent reduced controllability of the airplane.
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Formerly Rolls-Royce Deutschland GmbH, formerly BMW Rolls-Royce GmbH) Models BR700-710A1-10 and BR700-710A2-20 Turbofan Engines
The FAA proposes to supersede an existing airworthiness directive (AD) for Rolls-Royce Deutschland Ltd & Co KG (RRD) (formerly Rolls-Royce Deutschland GmbH, formerly BMW Rolls-Royce GmbH) models BR700-710A1-10 and BR700-710A2-20 turbofan engines. That AD currently requires initial and repetitive visual and ultrasonic inspections of fan discs, part numbers (P/Ns) BRR18803, BRR19248, and BRR20791 for cracks, and if necessary, replacement with serviceable parts. This proposed AD would require the same inspections of these fan discs, with certain old design P/N fan blades installed. This proposed AD would extend the inspection interval for certain fan discs having new design P/N fan blades installed. Also, this proposed AD would add as optional terminating action to the repetitive inspections, installation of certain P/N new fan discs, certain P/N new fan blades, and engine fan speed (N1) Keep Out Zone software. This proposed AD results from a revised RRD service bulletin (SB) that introduces relaxed inspection intervals for certain P/N combinations of fan discs and fan blades, and introduces improved design fan discs and fan blades. We are proposing this AD to detect and prevent cracks in the fan disc that could result in an uncontained engine failure and damage to the airplane.
Airworthiness Directives; Hamilton Sundstrand Power Systems (formerly Sundstrand Power Systems) Auxiliary Power Units Models T-62T-46C2, T-62T-46C2A, T-62T-46C3, T-62T-46C7, and T-62T-46C7A
The FAA proposes to adopt a new airworthiness directive (AD). The new AD is for Hamilton Sundstrand Power Systems (formerly Sundstrand Power Systems) auxiliary power units (APUs) models T-62T- 46C2, T-62T-46C2A, T-62T-46C3, T-62T-46C7, and T-62T-46C7A, with compressor impeller assembly, part number (P/N) 4502020 or 4502020A, installed. This proposed AD would require removal from service of those compressor impeller assemblies at reduced service life limits. This proposed AD results from two reports of uncontained failures of compressor impeller assemblies. We are proposing this AD to prevent an uncontained APU failure and damage to the airplane.
Office of Hazardous Material Safety; Notice of Delays in Processing of Exemption Applications
In accordance with the requirements of 49 U.S.C. 5117(c), PHMSA is publishing the following list of exemption 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.
Stage 4 Aircraft Noise Standards
The FAA is adopting a new noise standard for subsonic jet airplanes and subsonic transport category large airplanes. This noise standard ensures that the latest available noise reduction technology is incorporated into new aircraft designs. This noise standard, Stage 4, applies to any person submitting an application for a new airplane type design on and after January 1, 2006. The standard may be chosen voluntarily prior to that date. This noise standard is intended to provide uniform noise certification standards for Stage 4 airplanes certificated in the United States and those airplanes that meet the new International Civil Aviation Organization Annex 16 Chapter 4 noise standard.
Airworthiness Directives; Airbus Model A321-100 and -200 Series Airplanes
The FAA is superseding an existing airworthiness directive (AD), which applies to Airbus Model A321 series airplanes. That AD currently requires revising the Limitations section of the airplane flight manual to include an instruction to use Flap 3 for landing when performing an approach in conditions of moderate to severe icing, significant crosswind (i.e., crosswinds greater than 20 knots, gust included), or moderate to severe turbulence. This new AD requires replacing existing elevator and aileron computers (ELACs) with ELACs having either L83 or L91 software, as applicable, which terminates the requirements of the existing AD. This AD also requires a related concurrent action. In addition, this AD revises the applicability by removing airplanes with these ELAC software standards incorporated in production. This AD is prompted by issuance of mandatory continuing airworthiness information by a civil airworthiness authority. We are issuing this AD to prevent roll oscillations during approach and landing in certain icing, crosswind, and turbulent conditions, which could result in reduced controllability of the airplane.
Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), and 36 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C- 21A), and 36 airplanes. This AD requires a one-time inspection of the center ball of the aileron control cable or cables for a defective swage, and corrective actions if necessary. This AD is prompted by a report indicating that an aileron cable failed on one affected airplane when the cable underwent a tension check. We are issuing this AD to prevent severe weakening of the aileron cable, and consequent reduced controllability of the airplane.
Airworthiness Directives; Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 series airplanes. This AD requires revising the airworthiness limitations section of the Instructions for Continued Airworthiness by incorporating new and revised structural inspection procedures and new and revised inspection intervals for the longitudinal skin joints in the fuselage pressure shell. This proposed AD also requires phase-in inspections and repair of any crack found during any phase-in inspection. This AD is prompted by a report indicating that visual inspections were not adequate for detecting fatigue cracking in portions of the longitudinal skin joints in the fuselage pressure shell. We are issuing this AD to detect and correct fatigue cracking of the longitudinal skin joints in the fuselage pressure shell, which could affect the structural integrity of the airplane, and result in loss of cabin pressurization during flight.
Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100 Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Fokker Model F.28 Mark 0070 and 0100 airplanes. This AD requires repetitive inspections for damage of the drive rod assembly of the aileron tab on each aileron actuator; repetitive measurements of the clearance between the aileron hydraulic lines and the drive rod; and related investigative and corrective actions if necessary. This AD is prompted by a report of an aileron 2 fault caused by severe wear of the polyamide washer that is part of an anti-rotation bush assembly in the aileron attachment lug. We are issuing this AD to prevent excessive wear of the polyamide washer of the aileron actuator bush assembly, which could result in aileron flutter and loss of control of the airplane.
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