Federal Aviation Administration February 12, 2007 – Federal Register Recent Federal Regulation Documents

The Clean Air Act (CAA) section 176(c), 42 U.S.C. 7506(c) and Amendments of 1990 \1\ require that all Federal actions conform to an applicable State Implementation Plan (SIP). The U.S. Environmental Protection Agency (EPA) has established criteria and procedures for Federal agencies to use in demonstrating conformity with an applicable SIP that can be found at 40 CFR 93.150 et.seq. (``The Rule'').

This action corrects a final rule published in the Federal Register on January 18, 2007 (72 FR 2182), Airspace Docket No. 06-ASW- 1, FAA Docket No. FAA-2006-24926. In that rule, an inadvertent error was made in the legal description for VOR Federal Airway V-75. Specifically, the description did not exclude the portion of the airway that is in Canadian airspace. This action corrects that error.

The FAA is superseding an existing airworthiness directive (AD) for CFM International CFM56-5 and -5B series turbofan engines. That AD requires exhaust gas temperature (EGT) harness replacement or the establishment of an EGT baseline and trend monitoring. That AD also requires replacement, if necessary, of certain EGT harnesses and EGT couplings as soon as a slow and continuous EGT drift downward is noticed after the effective date of that AD. This AD requires the same actions but for an increased population of affected EGT harnesses. This AD results from CFM International adding subsequently certified engine models to the list of engines that could have affected harnesses installed. We are issuing this AD to prevent unexpected deterioration of critical rotating engine parts due to higher than desired engine operating EGTs.

This action proposes to modify the Phoenix (PHX), AZ, Class B airspace area. Specifically, this action proposes to lower the ceiling to 9,000 feet mean sea level (MSL) and expand the arrival extension boundaries to 30 Nautical Miles (NM) to ensure the containment of the PHX Standard Terminal Arrival Routes (STAR) at the Phoenix Sky Harbor International Airport, and correct the inefficiencies of several existing areas identified during public meetings, and reviews of the airspace by the Phoenix Airspace Users Work Group (PAUWG) and Phoenix Terminal Radar Approach Control (TRACON P50). The FAA is proposing this action to improve the flow of air traffic, enhance safety, and reduce the potential for midair collision in the PHX Class B airspace area, while accommodating the concerns of airspace users. Further, this effort supports the FAA's national airspace redesign goal of optimizing terminal and en route airspace areas to reduce aircraft delays and improve system capacity.