Federal Aviation Administration April 24, 2006 – Federal Register Recent Federal Regulation Documents
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Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 Airplanes
We propose to revise Airworthiness Directive (AD) 68-17-03, which applies to all Pilatus Aircraft Ltd. PC-6 series airplanes. AD 68-17-03 currently requires you to repetitively inspect the rudder end rib for cracks and replace the rudder end rib with a modified rudder end rib when you find cracks. Installing the modified rudder end rib terminates the repetitive inspection requirements of AD 68-17-03. Under a licensing agreement with Pilatus, Fairchild Republic Company (also identified as Fairchild Industries, Fairchild Heli Porter, or Fairchild-Hiller Corporation) produced Model PC-6 series airplanes (manufacturer serial numbers 2001 through 2092) in the United States. AD 68-17-03 was intended to apply to all affected serial numbers of Model PC-6 series airplanes listed on Type Certificate Data Sheet (TCDS) No. 7A15, including the Fairchild-produced airplanes. Consequently, this proposed AD would clarify that all models of the PC- 6 airplane on TCDS No. 7A15 (including those models produced under the licensing agreement by Fairchild Republic Company) are included in the applicability. We are proposing this AD to detect and correct cracks in the rudder end rib, which could result in failure of the rudder end rib. This failure could result in loss of directional control.
Airworthiness Directives; Mitsubishi Heavy Industries MU-2B Series Airplanes
The FAA proposes to revise an earlier proposed airworthiness directive (AD) that applies to all Mitsubishi Heavy Industries MU-2B series airplanes. The earlier NPRM would have required you to do the following: Remove and visually inspect the wing attach barrel nuts, bolts, and retainers for cracks, corrosion, and fractures; replace any cracked, corroded, or fractured parts; inspect reusable wing attach barrel nuts and bolts for deformation and irregularities in the threads; replace any deformed or irregular parts; and install new or reusable parts and torque to the correct value. The earlier NPRM resulted from a recent safety evaluation that used a data-driven approach to evaluate the design, operation, and maintenance of the MU- 2B series airplanes in order to determine their safety and define what steps, if any, are necessary for their safe operation. This proposed AD would retain the actions from the earlier NPRM, add airplanes to the applicability, revise the serial numbers of the affected airplanes, and update the manufacturer's contact information. This proposed AD results from the manufacturer revising the service information to include two additional airplane models. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these additional actions.
Revision of Class E Airspace; Herlong, CA
This final rule will revise the Class E airspace area at Herlong, CA. Additional controlled airspace is necessary for the safety of Instrument Flight Rules (IFR) aircraft during airborne holding. Holding airspace is designed with specific altitudes and lateral boundaries within controlled airspace. This airborne holding procedure is also an integral part of a new Area Navigation (RNAV) Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP) at the Amedee Army Air Field (AFF), Herlong, CA.
Establishment of Class E Airspace; Galbraith Lake, AK
This action establishes Class E airspace at Galbraith Lake, AK to provide adequate controlled airspace to contain aircraft executing two amended Special Standard Instrument Approach Procedures (SIAPs). This rule results in new Class E airspace established upward from 700 feet (ft.) above the surface at Galbraith Lake, AK.
Revision of Class E Airspace; Middleton Island, AK
This action revises Class E airspace at Middleton Island, AK to provide adequate controlled airspace to contain aircraft executing two new and two amended Standard Instrument Approach Procedures (SIAPs). This rule results in revised Class E airspace established upward from 700 feet (ft.) and 1,200 ft. above the surface at Middleton Island, AK.
Establishment of Class E Airspace; Kuparuk, AK
This action establishes Class E airspace at Kuparuk, AK to provide adequate controlled airspace to contain aircraft executing eight Special Standard Instrument Approach Procedures (SIAPs). This rule results in new Class E airspace established upward from 700 feet (ft.) above the surface at Ugnu-Kuparuk Airport, AK.
Revision of Class E Airspace; Togiak Village, AK
This action revises Class E airspace at Togiak Village, AK to provide adequate controlled airspace to contain aircraft executing two new and two amended Standard Instrument Approach Procedures (SIAPs). This rule results in revised Class E airspace established upward from 700 feet (ft.) above the surface at Togiak Village, AK.
Establishment of Class E Airspace; Minchumina, AK
This action corrects an error in the airspace description contained in a Final Rule that was published in the Federal Register on Wednesday, April 5, 2006 (71 FR 16997). Airspace Docket No. 05-AAL-41.
Interim Guidelines for Certification and Continued Airworthiness of Unbalanced Control Surfaces With Freeplay and Other Nonlinear Features
The Federal Aviation Administration (FAA) announces the availability of proposed Interim Guidelines for Certification and Continued Airworthiness of Unbalanced Control Surfaces with Freeplay and Other Nonlinear Features.
Agency Information Collection Activity Under OMB Review, Request for Comments; Renewal of an Approved Information Collection Activity, Operating Requirements: Commuter and On-Demand Operation
The FAA invites public comments about our intention to request the Office of Management and Budget's (OMB) renewal of a current information collection. The Federal Register Notices with a 60-day comment period soliciting comments on the following collection of information was published on January 18, 2006, volume 71, 11, page 2982. Standards have been established for the operation of agricultural aircraft and for the dispensing of chemicals, pesticides, and toxic substances. Information collected shows applicant compliance and eligibility for certification by FAA.
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