Federal Aviation Administration March 10, 2005 – Federal Register Recent Federal Regulation Documents

Pursuant to FAA's rulemaking provisions governing the application, processing, and disposition of petitions for exemption part 11 of Title 14, Code of Federal Regulations (14 CFR), this notice contains a summary of certain petitions seeking relief from specified requirements of 14 CFR, dispositions of certain petitions previously received, and corrections. The purpose of this notice is to improve the public's awareness of, and participation in, this aspect of FAA's regulatory activities. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of any petition or its final disposition.

These special conditions are issued for the Cessna Aircraft Company, Model 172R and 172S airplanes. These airplanes, as modified by Cessna Aircraft Company, will have a novel or unusual design feature(s) associated with the installation of a Garmin G1000 electronic flight instrument system (EFIS) and the protection of this system from the effects of high intensity radiated field (HIRF) environments. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

This rule establishes a Class E surface area at Newton, IA. It also modifies the Class E airspace area extending upward from 700 feet above the surface at Newton, IA. The effect of this rule is to provide appropriate controlled Class E airspace for aircraft departing from and executing instrument approach procedures to Newton Municipal Airport and to segregate aircraft using instrument approach procedures in instrument conditions from aircraft operating in visual conditions.

This action modifies Class E airspace at Hibbing, MN. Standard Instrument Approach Procedures have been developed for Chisholm-Hibbing Airport. Controlled airspace extending upward from 700 feet or more above the surface of the earth is needed to contain aircraft executing these approaches. This action modifies the area of existing controlled airspace for Chisholm-Hibbing Airport.

This document proposes to modify Class E airspace at Muskegon, MI. Standard Instrument Approach Procedures have been developed for Grand Haven Memorial Airpark, Grand Haven, MI. Controlled airspace extending upward from 700 feet or more above the surface of the earth is needed to contain aircraft executing these approach procedures. This action would increase the area of existing controlled airspace for Grand Haven Memorial Airpark.

The Federal Aviation Administration (FAA) announces its determination that the noise exposure maps submitted by Montgomery Airport Authority for Montgomery Regional Airport under the provisions of 49 U.S.C. 47501 et seq. (Aviation Safety and Noise Abatement Act) and 14 CFR part 150 are in compliance with applicable requirements. The FAA also announces that it is reviewing a proposed noise compatibility program update that was submitted for Montgomery Regional Airport under part 150 in conjunction with the noise exposure map, and that this program will be approved or disapproved on or before August 27, 2005.

This rule establishes a Class E surface area at Newton, KS. It also modifies the Class E airspace area extending upward from 700 feet above the surface at Newton, KS by correcting discrepancies in the extension to this airspace area. The effect of this rule is to provide appropriate controlled Class E airspace for aircraft executing instrument approach procedures to Newton-City-County Airport and to segregate aircraft using instrument approach procedures in instrument conditions from aircraft operating in visual conditions.

The FAA is superseding an existing airworthiness directive (AD) for Pratt & Whitney (PW) JT9D-59A, -70A, -7Q, and -7Q3 turbofan engines. That AD currently requires fluorescent penetrant inspection (FPI) of high pressure turbine (HPT) second stage airseals, part numbers (P/Ns) 5002537-01, 788945, 753187, and 807410, knife-edges for cracks, each time the engine's HPT second stage airseal is accessible. This AD requires replacing each existing HPT second stage airseal with an improved design HPT second stage airseal and modifying the 2nd stage HPT vane cluster assembly and 1st stage retaining blade HPT plate assembly at next piece-part exposure, but no later than five years after the effective date of this AD. These actions are considered terminating action to the repetitive inspections required by AD 2002- 10-07. This AD results from the manufacturer introducing an improved design HPT second stage airseal and modifications to increase cooling. We are issuing this AD to prevent failure of the HPT second stage airseal due to cracks in the knife-edges, which if not detected, could result in uncontained engine failure and damage to the airplane.

This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-135 and -145 series airplanes. This AD requires modification of the mid, aft, and forward upper liners in the baggage compartment. The modification involves replacing the plastic lens protection grids on all upper liners with new, light metal lens protection grids. This AD is necessary to prevent the plastic lens protection grids from breaking away and exposing the lens as a source of fire, which could lead to fire damage to the aircraft systems and structure, and expose the passengers and crew to hazardous quantities of smoke. This action is intended to address the identified unsafe condition.