Airworthiness Directives; Gulfstream Model GIV-X and GV-SP Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Model GIV-X and GV-SP series airplanes. This AD requires revising the Limitations section of the airplane flight manual by incorporating new procedures to follow in the event that the cockpit displays go blank or malfunction. This AD results from a report that all four of the cockpit flight panel display units simultaneously went blank during flight. We are issuing this AD to ensure that the flightcrew is advised of the appropriate procedures to follow in the event that the cockpit displays go blank or malfunction, which could result in a reduction of the flightcrew's situational awareness and possible loss of control of the airplane.
Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 Airplanes; and Model EMB-145, -145ER, -145MR, -145LR, -145XR, -145MP, and -145EP Airplanes
The FAA is adopting a new airworthiness directive (AD) for all EMBRAER Model EMB-135 airplanes; and Model EMB-145, -145ER, -145MR, - 145LR, -145XR, -145MP, and -145EP airplanes. This AD requires repetitive inspections of the pitot static heating relay K0057 for damage to the pin-type contacts, relay enclosure, and finishing material and corrective actions if necessary. This AD also requires doing a terminating modification, which ends the repetitive inspections. This AD results from a report of a burning drain hose and smoke caused by an overheated pitot static heating relay. We are issuing this AD to prevent over-heating of a certain pitot static heating relay, which could result in the burning of the windowsill drain hoses and consequent smoke or fire in the airplane cockpit.
Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies
The FAA proposes to supersede an existing airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, ``Parallel Valve'' reciprocating engines, with certain Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series ``Classic Cast'', installed. That AD currently requires replacing these ECi cylinder assemblies. This proposed AD would require the same actions, but would replace the ``Engine Models'' Table 1 and ``Engines Installed On, But Not Limited To'' Table 2 with corrected tables. Also, this proposed AD would correct a casting part number. This proposed AD results from reports of applicability errors found in AD 2005-26-10. We are proposing this AD to prevent loss of engine power due to cracks in the cylinder assemblies and possible engine failure caused by separation of a cylinder head.
Delayed Implementation of the Airspace Modification Final Rule for the Grand Canyon National Park Special Flight Rule Area and Flight Free Zones
This action stays the effective date for the implementation of the Airspace Modification final rule for the east end of the Grand Canyon National Park (GCNP) until February 20, 2011. In a case decided in August 2002, the U.S. Court of Appeals for the District of Columbia Circuit returned the GCNP rules to the FAA for further consideration of ways to ensure the substantial restoration of natural quiet. After several attempts in resolving the routes issue in the east end, in February 2003, the FAA stayed the east end routes and airspace changes until February 20, 2006. Because of an ongoing mediation action, which involves consideration of the routes in the east end of the GCNP, the FAA finds it necessary to extend the date for the effectiveness of the Airspace Modification rule for the east end until February 20, 2011.