Department of Transportation July 23, 2010 – Federal Register Recent Federal Regulation Documents

This notice advises interested persons that the Pipeline and Hazardous Materials Safety Administration (PHMSA) is soliciting comments on the development of the 2012 Emergency Response Guidebook (ERG2012), particularly from those who have experience using the 2008 Emergency Response Guidebook (ERG). The ERG is for use by emergency services personnel to provide guidance for initial response to hazardous materials incidents. The ERG2012 will supersede the ERG2008. The development of the ERG2012 is a joint effort involving the transportation agencies of the United States, Canada, and Mexico.

The FHWA invites public comments about our intention to request the Office of Management and Budget's (OMB) approval for renewal of an existing information collection that is summarized below under SUPPLEMENTARY INFORMATION. We are required to publish this notice in the Federal Register by the Paperwork Reduction Act of 1995.

We propose to adopt a new airworthiness directive (AD) for the products listed above. 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:

We propose to adopt a new airworthiness directive (AD) for the products listed above. 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:

The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all Model 757 airplanes. The existing AD currently requires sealing the fasteners on the front and rear spars inside the left and right main fuel tanks and on the rear spar and lower panel of the center fuel tank. That AD also requires inspections of the wire bundle support installations to verify if certain clamps are installed and if Teflon sleeving covers the wire bundles inside the left and right equipment cooling system bays, on the left and right rear spars, and on the left and right front spars; and corrective actions if necessary. This proposed AD would also require sealing the additional fasteners on the rear spar inside the left and right main fuel tanks. This proposed AD results from a fuel system review conducted by the manufacturer. We have received reports from the manufacturer that additional fasteners in the main fuel tanks must be sealed for lightning strike protection. We are proposing this AD to detect and correct improper wire bundle support installation and sleeving and to prevent improperly sealed fasteners in the main and center fuel tanks from becoming an ignition source, in the event of a fault current or lightning strike, which could result in a fuel tank explosion and consequent loss of the airplane.

The FAA proposes to adopt a new airworthiness directive (AD) for GE CT7-9C and -9C3 turboprop engines with certain serial number (S/ N) gas generator turbine (GGT) shafts, part number (P/N) 6068T44P02, installed. This proposed AD would require inspecting the GGT shaft for nonconforming land balance-cuts, and if found, removing the shaft from service. This proposed AD results from reports of a manufacturing quality problem. We are proposing this AD to detect nonconforming GGT shaft land balance-cuts, which could result in the shaft failing before its published life limit, and which could result in an uncontained engine failure and damage to the airplane.