[Federal Register Volume 72, Number 145 (Monday, July 30, 2007)]
[Proposed Rules]
[Pages 41465-41466]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-14637]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-28810; Directorate Identifier 2007-NM-104-AD]
RIN 2120-AA64


Airworthiness Directives; Hawker Beechcraft Model Hawker 800XP 
Airplanes

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

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for certain Hawker Beechcraft Model Hawker 800XP airplanes. This 
proposed AD would require doing an inspection of panel DA wiring for 
clearance and for signs of chafing or exposed conductors, and repairing 
or replacing the wires and cable ties if necessary. This proposed AD 
results from reports of wire bundle interference in the DA panel, 
chafed wire bundles, and exposed conductors. We are proposing this AD 
to prevent chafing of wire bundles, which could cause an electrical 
short and consequent loss of several functions essential for safe 
flight and smoke or fire in the flight compartment and main cabin.

DATES: We must receive comments on this proposed AD by September 13, 
2007.

ADDRESSES: Use one of the following addresses to submit comments on 
this proposed AD.
     DOT Docket Web site: Go to http://dms.dot.gov and follow 
the instructions for sending your comments electronically.
     Government-wide rulemaking Web site: Go to http://www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Fax: (202) 493-2251.
     Hand Delivery: Room W12-140 on the ground floor of the 
West Building, 1200 New Jersey Avenue SE., Washington, DC, between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    Contact Hawker Beechcraft Corporation, 9709 East Central, Wichita, 
Kansas 67206, for the service information identified in this proposed 
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:

Comments Invited

    We invite you to submit any relevant written data, views, or 
arguments regarding this proposed AD. Send your comments to an address 
listed in the ADDRESSES section. Include the docket number ``FAA-2007-
28810; Directorate Identifier 2007-NM-104-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of the proposed AD. We will 
consider all comments received by the closing date and may amend the 
proposed AD in light of those comments.
    We will post all comments we receive, without change, to http://dms.dot.gov, including any personal information you provide. We will 
also post a report summarizing each substantive verbal contact with FAA 
personnel concerning this proposed AD. Using the search function of 
that Web site, anyone can find and read the comments in any of our 
dockets, including the name of the individual who sent the comment (or 
signed the comment on behalf of an association, business, labor union, 
etc.). You may review DOT's complete Privacy Act Statement in the 
Federal Register published on April 11, 2000 (65 FR 19477-78), or you 
may visit http://dms.dot.gov.

Examining the Docket

    You may examine the AD docket on the Internet at http://dms.dot.gov, or in person at the Docket Operations office between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The 
Docket Operations office (telephone (800) 647-5527) is located on the 
ground level of the West Building at the DOT street address stated in 
the ADDRESSES section. Comments will be available in the AD docket 
shortly after the Docket Management System receives them.

Discussion

    We have received reports of wire bundle interference in the DA 
panel, chafed wire bundles, and exposed conductors, on Hawker 
Beechcraft Model Hawker 800XP airplanes. These wire bundles consist of 
wiring for various airplane systems (e.g., primary or secondary flight 
displays, air data systems, communications, navigation, warnings, and 
numerous other airplane systems). The cause has been attributed to 
improper wire routing resulting from inadequate detailed assembly and 
installation instructions during production of the airplanes. Chafing 
of wire bundles, if not corrected, could cause an electrical short and 
consequent loss of several functions essential for safe flight and 
smoke or fire in the flight compartment and main cabin.

Relevant Service Information

    We have reviewed Raytheon Service Bulletin SB 24-3772, dated 
February 2006. The service information describes procedures for doing a 
detailed inspection of panel DA wiring for clearance and for signs of 
chafing or exposed conductors, and repairing or replacing the wires and 
cable ties with new ones, if necessary. Accomplishing the actions 
specified in the service information is intended to adequately address 
the unsafe condition.

FAA's Determination and Requirements of the Proposed AD

    We have evaluated all pertinent information and identified an 
unsafe condition that is likely to exist or develop on other airplanes 
of this same type design. For this reason, we are proposing this AD, 
which would require accomplishing the actions specified in the service 
information described previously, except as discussed under 
``Difference Between the Proposed AD and Referenced Service 
Information.''

Difference Between Proposed Rule and Referenced Service Information

    Operators should note that, although the Accomplishment 
Instructions of the referenced service information describe procedures 
for submitting a sheet recording compliance with the service 
information, this proposed AD would not require that action.

Costs of Compliance

    There are about 438 airplanes of the affected design in the 
worldwide fleet. This proposed AD would affect about 292 airplanes of 
U.S. registry. The proposed inspection would take about 2 work hours 
per airplane, at an average labor rate of $80 per work hour. Based on 
these figures, the estimated cost of

[[Page 41466]]

the proposed AD for U.S. operators is $46,720, or $160 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 proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would 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 the proposed 
regulation:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866;
    2. Is not a ``significant rule'' under the 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 proposed 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, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

    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]

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

Hawker Beechcraft Corporation: Docket No. FAA-2007-28810; 
Directorate Identifier 2007-NM-104-AD.

Comments Due Date

    (a) The FAA must receive comments on this AD action by September 
13, 2007.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Hawker Beechcraft Model Hawker 800XP 
airplanes, certificated in any category; as identified in Raytheon 
Service Bulletin SB 24-3772, dated February 2006.

Unsafe Condition

    (d) This AD results from reports of wire bundle interference in 
the DA panel, chafed wire bundles, and exposed conductors. We are 
issuing this AD to prevent chafing of wire bundles, which could 
cause an electrical short and consequent loss of several functions 
essential for safe flight and smoke or fire in the flight 
compartment and main cabin.

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 and Corrective Actions

    (f) Within 600 flight hours or 12 months after the effective 
date of this AD, whichever occurs first, do a detailed inspection of 
panel DA wiring for clearance and for signs of chafing or exposed 
conductors, in accordance with the Accomplishment Instructions of 
Raytheon Service Bulletin SB 24-3772, dated February 2006. If any 
wire is touching the panel, structure, or equipment, or if evidence 
of chafing or exposed conductors exists, before further flight, 
repair or replace the wires and cable ties with new ones, 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.''

    (g) Although Raytheon Service Bulletin SB 24-3772, dated 
February 2006, specifies to submit certain information to the 
manufacturer, this AD does not include that requirement.

Alternative Methods of Compliance (AMOCs)

    (h)(1) The Manager, Wichita Aircraft Certification Office, FAA, 
has the authority to approve AMOCs for this AD, if requested in 
accordance with the procedures found in 14 CFR 39.19.
    (2) To request a different method of compliance or a different 
compliance time for this AD, follow the procedures in 14 CFR 39.19. 
Before using any approved AMOC on any airplane to which the AMOC 
applies, notify your appropriate principal inspector (PI) in the FAA 
Flight Standards District Office (FSDO), or lacking a PI, your local 
FSDO.

    Issued in Renton, Washington, on July 18, 2007.
Stephen P. Boyd,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E7-14637 Filed 7-27-07; 8:45 am]
BILLING CODE 4910-13-P