Federal Aviation Administration March 2010 – Federal Register Recent Federal Regulation Documents

This action proposes to modify the Norton Sound Low and Control 1234L Offshore Airspace Areas in Alaska. This action would lower the airspace floors to provide controlled airspace beyond 12 miles from the coast of the United States given that there is a requirement to provide Instrument Flight Rules (IFR) en route Air Traffic Control (ATC) services and within which the United States is applying domestic ATC procedures.

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued 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 installation of TU250 CS boards, however, has resulted in a few occurrences of erratic engine behaviour, in the form of unexpected N1 variations and/or illumination of the ``GOV'' warning light. The conclusions from an investigation by Turbom[eacute]ca are that these malfunctions are due to a lapse of quality control in the varnishing process applied to the boards, and that only boards in a specific serial number range, as defined under ``Applicability'' and referred to below as the ``suspect batch,'' are affected.

The FAA is issuing this notice to advise the public of a meeting of RTCA Special Committee 220: Automatic Flight Guidance and Control.

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued 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: Investigation of an uncommanded in-flight shutdown (IFSD) revealed that a third stage turbine wheel rupture was not contained by the turbine casings. The released portion consisted of a turbine blade together with the rim piece immediately below the blade. The rim piece was bounded by two adjacent axial slots and a fatigue crack that had developed between the holes in which the slots terminate. The slots and holes, which are closed by riveted plugs, were introduced by modification AB 173 in order to improve the vibration characteristics of the turbine wheel. Modification AB 208 brings an improvement to modification AB 173 by changing only the riveting detail. SN 283 72 0805 provides instructions for re-boring the holes at overhaul or repair in order to improve their surface condition. A manufacturing process modification has been introduced to improve the surface condition of these holes in third stage turbine wheels. Wheels subject to the improved manufacturing process have S/Ns outside the range specified in Table 1. Although there is only one known event, and although it resulted only in an uncommanded IFSD, with no damage to the aircraft, the possibility exists that additional events may occur, potentially involving damage to the aircraft.

We propose to supersede Airworthiness Directive (AD) 2009-24- 13, which applies to certain Cessna Aircraft Company (Cessna) Model 525A airplanes. AD 2009-24-13 currently requires you to repetitively inspect the thrust attenuator paddle assemblies for loose and damaged fasteners and for cracks. AD 2009-24-13 also requires you to replace loose or damaged fasteners and replace cracked thrust attenuator paddles found during any inspection. Since we issued AD 2009-24-13, Cessna has developed new design thrust attenuator paddles and universal head rivets as terminating action for the repetitive inspections. Consequently, this proposed AD would retain the requirements of AD 2009-24-13 until replacement of both thrust attenuator paddles and the eight countersunk fasteners with new design thrust attenuator paddles and universal head rivets. We are proposing this AD to detect and correct loose and damaged fasteners and cracks in the thrust attenuator paddles, which could result in in-flight departure of the thrust attenuator paddles. This failure could lead to rudder and elevator damage and result in loss of control.

This notice contains a summary of a petition seeking relief from specified requirements of 14 CFR. 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 the petition or its final disposition.

We are revising an earlier NPRM for the products listed above. This action revises the earlier NPRM by expanding the scope. This 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: Several cases of corrosion and damage on the Down Drive Shafts (DDS), between the Down Drive Gear Box (DDGB) and the Input Gear Box (IPGB), on all 10 Flap Tracks (5 per wing), have been reported by AIRBUS Long Range Operators. Investigations have revealed that corrosion and wear due to absence of grease in the spline interfaces could cause [DDS] disconnection which could result in a free movable flap surface, potentially leading to aircraft asymmetry or even flap detachment.

This action proposes to remove Class E airspace at Brunswick, ME, as the airport has closed and the associated Standard Instrument Approach Procedures (SIAPs) removed, and to establish Class E airspace at Wiscasset, ME, to accommodate the SIAPs developed for the airport. This action enhances the safety and airspace management of Instrument Flight Rules (IFR) operations at Wiscasset Airport, Wiscasset, ME.

The FAA is superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product, and results from the risk of engine fuel-to-oil heat exchanger (FOHE) blockage. The MCAI describes the unsafe condition as:

We are adopting a new airworthiness directive (AD) for certain Model 767-200, -300, and -300F series airplanes. For certain airplanes, this AD requires installing support hardware and modifying the interfacing wiring of the fuel quantity indicating system (FQIS) densitometer. For certain other airplanes, this AD requires replacing the existing hot short protector (HSP) on the FQIS densitometer with a new HSP. This AD also requires revising the Airworthiness Limitations (AWL) section of the Instructions for Continued Airworthiness to incorporate AWL No. 28-AWL-22. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent the center tank fuel densitometer from overheating and becoming a potential ignition source inside the center fuel tank, which, in combination with flammable fuel vapors, could result in a center fuel tank explosion and consequent loss of the airplane.

The FAA is issuing this notice to advise the public of a meeting of RTCA Special Committee 223: Airport Surface Wireless Communications.

This action would remove Class D and Class E airspace areas at Panama City-Bay County Airport, Panama City, FL, as the old airport and control tower is scheduled to be closed. Controlled airspace will be established for the new airport under separate rulemaking.

This action proposes to modify Class D and Class E airspace in the Yuma, AZ, area. Additional controlled airspace is necessary to accommodate aircraft arriving and departing Somerton Airport, Somerton, AZ. This action would enhance the safety and management of aircraft operations at the airport.

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued 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: Following a review of operational data of the Tay 651-54 engine, it has been found that the actual stress levels in the Tay 651- 54 engine High Pressure Compressor (HPC) stages 1, 3, 6, 7 and 12 discs were higher than those originally assumed and therefore the approved lives needed to be reduced.

The FAA proposes to adopt a new airworthiness directive (AD) for PW PW4052, PW4056, PW4060, PW4062, PW4062A, PW4074, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, PW4152, PW4156, PW4156A, PW4158, PW4164, PW4168, PW4168A, PW4460, and PW4462 turbofan engines. This proposed AD would require initial and repetitive fluorescent penetrant inspections (FPI) for cracks in the blade locking and loading slots of the high-pressure compressor (HPC) drum rotor disk assembly. This proposed AD results from reports of cracked locking and loading slots in the HPC drum rotor disk assembly. We are proposing this AD to detect cracks in the locking and loading slots in the HPC drum rotor disk assemblies, which could result in rupture of the HPC drum rotor disk assembly and damage to the airplane.

This notice contains a summary of a petition seeking relief from specified requirements of 14 CFR. 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 the petition or its final disposition.

This action changes the using agency of restricted areas R- 3005A, R-3005B, R-3005C, R-3005D and R-3005E, Fort Stewart, GA, to ``Commander, U.S. Army Garrison, Fort Stewart, GA.'' There are no changes to the boundaries; designated altitudes; time of designation; or activities conducted within the affected restricted area.

We are revising an earlier NPRM for the products listed above that would supersede an existing AD. This action revises the earlier NPRM by expanding the scope. 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 earlier MCAI, Brazilian Airworthiness Directive 2007-08-02, effective September 27, 2007, describes the unsafe condition as:

We propose to adopt a new airworthiness directive (AD) for all Model 382, 382B, 382E, 382F, and 382G airplanes. This proposed AD would require repetitive eddy current inspections to detect cracks in the center wing upper and lower rainbow fittings, and corrective actions if necessary; and repetitive replacements of rainbow fittings, which would extend the repetitive interval for the next inspection. This proposed AD results from a report of fatigue cracking of the wing upper and lower rainbow fittings during durability testing and on in-service airplanes. Analysis of in-service cracking has shown that these rainbow fittings are susceptible to multiple site fatigue damage. We are proposing this AD to detect and correct such fatigue cracks, which could grow large and lead to the failure of the fitting and a catastrophic failure of the center wing.

This action proposes to amend Class E airspace at Clemson, SC, to correct the airspace description and establish Class E airspace at Pickens, SC, to achieve an additional 1000' of airspace to support a new LPV Approach (Localizer Performance with Vertical Guidance) that has been developed for Pickens County Airport. This action enhances the safety and airspace management of Clemson-Oconee County Airport, SC and Pickens County Airport, Pickens, SC.

This action withdraws the Notice of Proposed Rulemaking (NPRM) published in the Federal Register on March 11, 2010, which proposed to establish Class D airspace and modify existing Class E airspace at Columbus Metropolitan Airport, Columbus, GA. The NPRM is being withdrawn so that the revocation of the existing Class C airspace at Columbus Metropolitan Airport will coincide with the establishment of the Class D airspace in Columbus, GA.

The FAA invites public comments about our intention to request the Office of Management and Budget's (OMB) revision of a current information collection. The Federal Register Notice with a 60-day comment period soliciting comments on the following collection of information was published on November 13, 2009, vol. 74, no. 218, page 58676. This information is needed to meet the requirements of Title 49, Section 40117(k), Competition Plans, and to carry out a passenger facility charge application.

This action amends Class E airspace at Georgetown, TX, to accommodate Area Navigation (RNAV) Standard Instrument Approach Procedures (SIAPs) at Georgetown Municipal Airport, Georgetown, TX. The FAA is taking this action to enhance the safety and management of Instrument Flight Rule (IFR) operations at the airport.

This action amends Class E airspace at Cedar Rapids, IA, to accommodate Area Navigation (RNAV) Standard Instrument Approach Procedures (SIAPs) at The Eastern Iowa Airport, Cedar Rapids, IA. The FAA is taking this action to enhance the safety and management of Instrument Flight Rule (IFR) operations at the airport.

The FAA proposes to revise an existing airworthiness directive (AD) for Turbomeca Arriel 2B1 turboshaft engines. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued 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: Since the issuance of AD 2007-0126 Turbom[eacute]ca has released modification TU157 which consists in modifying the pressure relief valve of the HMU by introducing a damping device into the valve. Introduction of this device has demonstrated to decrease the pressure fluctuations in the system, therefore reducing significantly the risk of wear of the delta-P diaphragm fabric. This will delete the need for a periodical replacement of the delta-P diaphragm before overhaul of the HMU. The modification TU157 is therefore considered as the terminating action for this AD.