[Federal Register Volume 72, Number 153 (Thursday, August 9, 2007)]
[Proposed Rules]
[Pages 44813-44814]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-15424]


 ========================================================================
 Proposed Rules
                                                 Federal Register
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 This section of the FEDERAL REGISTER contains notices to the public of 
 the proposed issuance of rules and regulations. The purpose of these 
 notices is to give interested persons an opportunity to participate in 
 the rule making prior to the adoption of the final rules.
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  Federal Register / Vol. 72, No. 153 / Thursday, August 9, 2007 / 
Proposed Rules  

[[Page 44813]]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-28883; Directorate Identifier 2007-NM-106-AD]
RIN 2120-AA64


Airworthiness Directives; Hawker Beechcraft Model 400A Series 
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 400A series airplanes. This 
proposed AD would require inspecting the galley cabinets to determine 
if a certain part number is installed or if a certain size of wire 
already exists, and doing related investigative/corrective actions if 
necessary. This proposed AD results from reports of undersized, and 
consequently unprotected, wire in the galley cabinets. We are proposing 
this AD to prevent overheating of wire insulation and consequent fire 
or smoke in the airplane cabin.

DATES: We must receive comments on this proposed AD by September 24, 
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-
28883; Directorate Identifier 2007-NM-106-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 undersized, and consequently 
unprotected, wire in the galley cabinets, on Hawker Beechcraft Model 
400A series airplanes. The electrical current-carrying capacity of the 
main bus power wiring installed in the galley cabinet(s) is not capable 
of supporting the trip rating of the airframe 50 amp galley power (50A) 
circuit breaker. This condition, if not corrected, could result in 
overheating of wire insulation and consequent fire or smoke in the 
airplane cabin.

Relevant Service Information

    We have reviewed Raytheon Service Bulletin SB 25-3758, dated June 
2006. The service information describes procedures for inspecting the 
galley cabinets to determine if Precision Pattern galley cabinet, part 
number (P/N) 20917, 20918, or 20921, is installed, or if 8AWG (American 
Wire Gauge) wire already exists; and doing any related investigative 
and applicable corrective actions, if necessary. The related 
investigative action is a visual inspection of the galley power wire 
for presence of 10AWG wire. The corrective action is replacing the 
undersized 10AWG wire with 8AWG wire in the gallery power circuit. 
Accomplishing the actions specified in the service information is 
intended to adequately address the unsafe condition.
    Raytheon Service Bulletin SB 25-3758, dated June 2006, refers to 
Raytheon Kit 128-3068-0001, Revision 3, dated April 18, 2006, as an 
additional source of service information for replacing the undersized 
10AWG wire with 8AWG wire in the gallery power circuit.

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

[[Page 44814]]

type design. For this reason, we are proposing this AD, which would 
require accomplishing the actions specified in the service information 
described previously.

Differences Between the Proposed AD and Service Information

    Raytheon Service Bulletin SB 25-3758 does not specify a compliance 
time for accomplishing the related investigative and applicable 
corrective actions after inspecting the galley cabinets. This proposed 
AD would require those applicable actions within 20 flight hours or 30 
days after inspecting the galley cabinets. In developing an appropriate 
compliance time, we considered the safety implications, the time 
necessary to perform the related investigative and applicable 
corrective actions, and normal maintenance schedules for timely 
accomplishment of those actions. In light of these items, we have 
determined that a compliance time of 20 flight hours or 30 days after 
inspecting the galley cabinet is appropriate. We have coordinated this 
difference with Hawker Beechcraft.

Costs of Compliance

    There are about 285 airplanes of the affected design in the 
worldwide fleet. This proposed AD would affect about 214 airplanes of 
U.S. registry. The proposed inspection would take about 1 work hour per 
airplane, at an average labor rate of $80 per work hour. Based on these 
figures, the estimated cost of the proposed AD for U.S. operators is 
$17,120, or $80 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-2007-28883; 
Directorate Identifier 2007-NM-106-AD.

Comments Due Date

    (a) The FAA must receive comments on this AD action by September 
24, 2007.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Hawker Beechcraft Model 400A series 
airplanes, certificated in any category; as identified in Raytheon 
Service Bulletin SB 25-3758, dated June 2006.

Unsafe Condition

    (d) This AD results from reports of undersized, and consequently 
unprotected, wire in the galley cabinets. We are issuing this AD to 
prevent overheating of wire insulation and consequent fire or smoke 
in the airplane 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 Related Investigative/Corrective Actions

    (f) Within 200 flight hours or 12 months after the effective 
date of this AD, whichever occurs first, inspect the galley cabinets 
to determine if Precision Pattern galley cabinet, part number (P/N) 
20917, 20918, or 20921, is installed, or if 8 American Wire Gauge 
(AWG) wire already exists, and within 20 flight hours or 30 days 
after the inspection, do all applicable related investigative and 
corrective actions, if necessary. The actions must be done in 
accordance with the Accomplishment Instructions of Raytheon Service 
Bulletin SB 25-3758, dated June 2006.

    Note 1: Raytheon Service Bulletin SB 25-3758, dated June 2006, 
refers to Raytheon Kit 128-3068-0001, Revision 3, dated April 18, 
2006, as an additional source of service information for replacing 
the undersized 10AWG wire with 8AWG wire in the gallery power 
circuit.

Alternative Methods of Compliance (AMOCs)

    (g)(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) 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 30, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
 [FR Doc. E7-15424 Filed 8-8-07; 8:45 am]
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