Federal Aviation Administration May 17, 2005 – Federal Register Recent Federal Regulation Documents
Results 1 - 6 of 6
Airworthiness Directives; Eurocopter France Model AS355E, F, F1, F2, and N Helicopters
This amendment supersedes an existing airworthiness directive (AD) for the specified Eurocopter France (ECF) model helicopters. That AD currently requires replacing certain main or combiner gearboxes with airworthy gearboxes. Further investigation has shown that the main gearbox is not affected, and this amendment requires replacing a certain combiner gearbox with a modified airworthy gearbox. This amendment is prompted by a report of a freewheel unit slipping resulting in an engine overspeed and shutdown. Also, this amendment is prompted by the conclusion of the investigation, which finds the freewheel slippage is due to the surface treatment applied to certain freewheel rollers in the combiner gearbox. The actions specified by this AD are intended to prevent an engine overspeed, an engine shutdown, and subsequent loss of control of the helicopter.
Airworthiness Directives; Bell Helicopter Textron Model 206A and 206B Helicopters
This document proposes adopting a new airworthiness directive (AD) for Bell Helicopter Textron (Bell) Model 206A and 206B helicopters modified by Aeronautical Accessories, Inc. Supplemental Type Certificate (STC) SH1392SO with certain part-numbered high crosstubes. The AD would require inspecting at specified time intervals and replacing any cracked crosstubes. This proposal is prompted by the discovery of a cracked high forward crosstube. The actions specified by the proposed AD are intended to detect a crack in the crosstube which could lead to failure of the crosstube, collapse of the landing gear, and subsequent loss of control of the helicopter.
Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD requires revising the Airworthiness Limitations section of the Instructions for Continued Airworthiness of the Canadair Regional Jet Maintenance Requirements Manual by incorporating new repetitive detailed inspections of the secondary load path indicator for the horizontal stabilizer trim actuator (HSTA). This AD is prompted by a report of a potential failure of the horizontal stabilizer trim actuator (HSTA) secondary nut in conjunction with a latent failure of the HSTA primary load path discovered during sampling program activities. We are issuing this AD to detect and correct latent failure of the primary load path of the HSTA, which, in conjunction with a failure of the HSTA secondary nut, could result in loss of horizontal trim control and consequent reduced controllability of the airplane.
Airworthiness Directives; Saab Model SAAB SF340A and SAAB 340B Series Airplanes
The FAA is superseding an existing airworthiness directive (AD), which applies to certain Saab Model SAAB SF340A and SAAB 340B series airplanes. That AD currently requires repetitive detailed inspections of the windshield wiper assembly for discrepant conditions, and corrective actions if necessary. This new AD requires repetitive detailed inspections of the left and right wiper arm assemblies for damage, and corrective/related investigative actions if necessary. This AD is prompted by an additional incident of a windshield wiper blade separating from the wiper arm. We are issuing this AD to prevent separation of a wiper arm from the airplane, which could result in damage to the fuselage skin and propeller.
Airworthiness Directives; Bombardier Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes. This AD requires operators to install torque tube catchers on the control columns of the flight controls. This AD is prompted by the discovery that a single malfunction of the torque tube could result in both flight control columns being supported by only one self-aligning bearing. We are issuing this AD to prevent the torque tube from fouling against the underfloor control cables, which could result in reduced controllability of the airplane.
Airworthiness Directives; Fokker Model F.28 Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Fokker Model F.28 series airplanes. This AD requires a one-time inspection of the area underneath the auxiliary power unit (APU) enclosure to determine if drain tubes in the area are correctly installed and to detect damaged wiring, and corrective action if necessary. This AD is prompted by a report of a fire under the APU enclosure. We are issuing this AD to prevent fuel from accumulating under the APU enclosure, which, in the presence of an ignition source, could result in a fire.
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