[Federal Register Volume 71, Number 101 (Thursday, May 25, 2006)]
[Rules and Regulations]
[Pages 30050-30051]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-4801]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-24084; Directorate Identifier 2006-NM-017-AD; 
Amendment 39-14611; AD 2006-11-07]
RIN 2120-AA64


Airworthiness Directives; Raytheon Model Hawker 800XP Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Raytheon Model Hawker 800XP airplanes. This AD requires 
inspecting certain bus bars in the DA-A panel to ensure that the bus 
bars match the panel configuration and clearance is adequate between 
the bus bars and adjacent components, and performing corrective action 
if necessary. This AD results from two reports of inadequate clearance 
between the bus bars in the DA-A panel. We are issuing this AD to 
prevent insufficient electrical isolation for the electrical bus 
configuration and inability of the flightcrew to isolate the bus bars 
in an emergency situation involving a dual generator failure, which 
could result in extra loads on the main ship batteries and consequent 
loss of power to the main essential bus.

DATES: This AD becomes effective June 29, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in the AD as of June 29, 
2006.

ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street, SW., Nassif Building, 
Room PL-401, Washington, DC.
    Contact Raytheon Aircraft Company, Department 62, P.O. Box 85, 
Wichita, Kansas 67201-0085, for service information identified in this 
AD.

FOR FURTHER INFORMATION CONTACT: Philip Petty, Aerospace Engineer, 
Electrical Systems and Avionics, ACE-119W, FAA, Wichita Aircraft 
Certification Office, 1801 Airport Road, Room 100, Mid-Continent 
Airport, Wichita, Kansas 67209; telephone (316) 946-4139; fax (316) 
946-4107.

SUPPLEMENTARY INFORMATION:

Examining the Docket

    You may examine the airworthiness directive (AD) docket on the 
Internet at http://dms.dot.gov or in person at the Docket Management 
Facility office between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. The Docket Management Facility office 
(telephone (800) 647-5227) is located on the plaza level of the Nassif 
Building at the street address stated in the ADDRESSES section.

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to include an AD that would apply to certain Raytheon Model 
Hawker 800XP airplanes. That NPRM was published in the Federal Register 
on March 7, 2006 (71 FR 11343). That NPRM proposed to require 
inspecting certain bus bars in the DA-A panel to ensure that the bus 
bars match the panel configuration and clearance is adequate between 
the bus bars and adjacent components, and performing corrective action 
if necessary.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We received no comments on the NPRM or on the 
determination of the cost to the public.

Explanation of Change Made to Proposed AD

    We have clarified the inspection requirement contained in the 
proposed AD. The proposed AD specifies a detailed inspection. We have 
revised this final rule to clarify the definition of a detailed 
inspection; Note 1 of this final rule defines that inspection.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD with the 
change described previously. We have determined that this change will 
neither increase the economic burden on any operator nor increase the 
scope of the AD.

Costs of Compliance

    There are about 164 airplanes of the affected design in the 
worldwide fleet. This AD will affect about 123 airplanes of U.S. 
registry. The required inspection will take about 1 work hour per 
airplane, at an average labor rate of $65 per work hour. Based on these 
figures, the estimated cost of the inspection for U.S. operators is 
$7,995, or $65 per airplane.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, Section 106, describes the 
authority of the FAA Administrator. Subtitle VII, Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701, ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We have determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will not have a 
substantial direct effect on the States, on the relationship between 
the national government and the States, or on the distribution of power 
and responsibilities among the various levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and
    (3) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this AD and placed it in the AD docket. See the ADDRESSES 
section for a location to examine the regulatory evaluation.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator,

[[Page 30051]]

the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

2006-11-07 Raytheon Aircraft Company: Amendment 39-14611. Docket No. 
FAA-2006-24084; Directorate Identifier 2006-NM-017-AD.

Effective Date

    (a) This AD becomes effective June 29, 2006.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Raytheon Model Hawker 800XP airplanes, 
certificated in any category; serial numbers 258541, 258556, 258567 
through 258609 inclusive, 258611 through 258628 inclusive, 258630 
through 258684 inclusive, and 258686 through 258728 inclusive.

Unsafe Condition

    (d) This AD results from two reports of inadequate clearance 
between the bus bars in the DA-A panel. We are issuing this AD to 
prevent insufficient electrical isolation for the electrical bus 
configuration and inability of the flightcrew to isolate the bus 
bars in an emergency situation involving a dual generator failure, 
which could result in extra loads on the main ship batteries and 
consequent loss of power to the main essential bus.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed within the compliance times specified, unless the 
actions have already been done.

Inspection/Corrective Action

    (f) Within 30 days after the effective date of this AD: Do a 
detailed inspection of the four bus bars in the DA-A panel to ensure 
that the bus bars match the panel configuration and clearance is 
adequate between the bus bars and adjacent components, by doing all 
the actions in accordance with the Accomplishment Instructions of 
Raytheon Service Bulletin SB 24-3745, Revision 1, dated September 
2005. Accomplish any applicable corrective action before further 
flight in accordance with the service bulletin.


    Note 1: For the purposes of this AD, a detailed inspection is: 
``An intensive examination of a specific item, installation, or 
assembly to detect damage, failure, or irregularity. Available 
lighting is normally supplemented with a direct source of good 
lighting at an intensity deemed appropriate. Inspection aids such as 
mirror, magnifying lenses, etc., may be necessary. Surface cleaning 
and elaborate procedures may be required.''


    Note 2: A note in the Accomplishment Instructions of the 
Raytheon service bulletin instructs operators to contact Raytheon if 
any difficulty is encountered in accomplishing the service bulletin. 
However, any deviation from the instructions provided in the service 
bulletin must be approved as an alternative method of compliance 
(AMOC) under paragraph (i)(1) of this AD.

Inspections Accomplished According to Previous Issue of Service 
Bulletin

    (g) Inspections accomplished before the effective date of this 
AD in accordance with Raytheon Service Bulletin SB 24-3745, dated 
September 2005, are considered acceptable for compliance with the 
inspections specified in paragraph (f) of this AD.

No Reporting Requirement

    (h) Although the Accomplishment Instructions of Raytheon Service 
Bulletin SB 24-3745, Revision 1, dated September 2005, specify 
submitting certain information to the manufacturer, this AD does not 
include that requirement.

Alternative Methods of Compliance (AMOCs)

    (i)(1) The Manager, Wichita Aircraft Certification Office (ACO), 
FAA, has the authority to approve AMOCs for this AD, if requested in 
accordance with the procedures found in 14 CFR 39.19.
    (2) Before using any AMOC approved in accordance with Sec.  
39.19 on any airplane to which the AMOC applies, notify the 
appropriate principal inspector in the FAA Flight Standards 
Certificate Holding District Office.

Material Incorporated by Reference

    (j) You must use Raytheon Service Bulletin SB 24-3745, Revision 
1, dated September 2005, to perform the actions that are required by 
this AD, unless the AD specifies otherwise. The Director of the 
Federal Register approved the incorporation by reference of this 
document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. 
Contact Raytheon Aircraft Company, Department 62, P.O. Box 85, 
Wichita, Kansas 67201-0085, for a copy of this service information. 
You may review copies at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street, SW., Room PL-401, 
Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration 
(NARA). For information on the availability of this material at the 
NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Renton, Washington, on May 15, 2006.
Kevin M. Mullin,
Acting Manager, , Transport Airplane Directorate, Aircraft 
Certification Service.
[FR Doc. 06-4801 Filed 5-24-06; 8:45 am]
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