Federal Aviation Administration January 30, 2007 – Federal Register Recent Federal Regulation Documents
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Airworthiness Directives; Bombardier Model DHC-8-400 Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model DHC-8-400 series airplanes. This AD requires revising the Airworthiness Limitations Items (ALI) of the maintenance requirements manual to require additional inspection requirements of the maintenance requirements manual for certain principal structural elements (PSEs) related to fuselage cutouts and to reduce an inspection threshold for an existing ALI task on the aft entry door. This AD results from data obtained from the manufacturer's fatigue testing. We are issuing this AD to detect and correct fatigue cracking of certain PSEs, which could result in reduced structural integrity of the airplane.
Airworthiness Directives; Airbus Model A310-300 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Model A310-300 airplanes. This AD requires replacing the existing non-return valve (NRV) of the auxiliary center tanks (ACTs) of the fuel system with a new, improved NRV. This AD results from a report that it was not possible to transfer fuel from ACTs 1 and 2 during flight, and no electronic centralized aircraft monitor warnings were triggered. Investigation revealed a faulty static inverter and blown fuse, resulting in failure of certain fueling bus bars and subsequent failure of the automatic ACT fuel transfer. We are issuing this AD to prevent these failures, combined with failure of the NRV to close. If the NRV is open during flight, the fuel supply to the engines may be reduced during cross-feed operation to the extent that fuel starvation could occur and result in engine flameout.
Airworthiness Directives; Dassault Model Mystere-Falcon 50 and 900, and Falcon 900EX Airplanes; and Model Falcon 2000 and Falcon 2000EX Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Dassault Model Mystere-Falcon 50 and 900, and Falcon 900EX airplanes; and Model Falcon 2000 and Falcon 2000EX airplanes. This AD requires an inspection of the identification plates of the outboard slats to determine the type of identification plates and the part numbers. For certain airplanes, this AD also requires a revision to the Limitations and Normal Procedures sections of the airplane flight manual to provide procedures for operation in icing conditions; and replacement of the anti-icing manifold with an anti-icing manifold of the correct type design if necessary. For certain airplanes, this AD also requires related investigative and corrective actions if necessary. This AD results from a finding that the outboard slats for Model Mystere-Falcon 50 airplanes have been erroneously authorized, in limited cases, as interchangeable for use on Model Mystere-Falcon 900 and Falcon 900EX airplanes; and Model Falcon 2000 and Falcon 2000EX airplanes. We are issuing this AD to prevent failure of the anti-icing manifold of the outboard slats, which could result in loss of control of the airplane.
Inspection Authorization 2-Year Renewal
The Federal Aviation Administration (FAA) is amending the regulations for the Inspection Authorization (IA) renewal period. The current IA regulation has a 1-year renewal period. This rulemaking changes the renewal period to once every two years. By changing the renewal period, the FAA reduces the renewal administrative costs by 50%. Both the FAA and the mechanic holding the IA will realize this cost reduction. Aviation safety will not be affected because this rulemaking does not change the requirements of the prior rule for annual activity (work performed, training, or oral examination).
Establishment of Class E Airspace; Ridgway, PA
This action establishes Class E airspace at Ridgway Landing Zone, Ridgway, PA. Development of an Area Navigation (RNAV), Helicopter Point in Space Approach, for the Ridgway Landing Zone, Ridgway, PA, has made this action necessary. Controlled airspace extending upward from 700 feet Above Ground Level (AGL) is needed to contain aircraft executing the approach to the Ridgway Landing Zone. This is a correction to a final rule published on October 17, 2006. 71 FR 60817. This final rule corrects the spelling of ``Ridgeway'' to ``Ridgway''
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