
[Federal Register: December 17, 2009 (Volume 74, Number 241)]
[Proposed Rules]               
[Page 66930-66932]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr17de09-10]                         


[[Page 66930]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-1176; Directorate Identifier 2009-CE-062-AD]
RIN 2120-AA64

 
Airworthiness Directives; Hawker Beechcraft Corporation Model G58 
Airplanes

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

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Hawker Beechcraft Corporation Model G58 airplanes. This 
proposed AD would require inspecting the installation of stand-off 
hardware between the heater fuel line and the heater over-temperature 
sensor wires for minimum clearance and installing acceptable stand-off 
hardware if stand-off hardware is missing or inadequate. This proposed 
AD would also require inspecting the brake reservoir line and the fuel 
heater power wire for damage and minimum clearance, replacing any 
damaged wires and/or lines, and installing stand-off hardware if 
minimum clearance is not met. This proposed AD results from reports 
received of a power wire shorting out on the brake reservoir tube. We 
are proposing this AD to detect and correct inadequate clearance of the 
brake reservoir tubing and the heater fuel pump wiring, which could 
result in chafing and shorting out of the electrical wiring and chafing 
of the tubing carrying flammable fluids. This condition could lead to a 
fire in the nose wheel well.

DATES: We must receive comments on this proposed AD by February 1, 
2010.

ADDRESSES: Use one of the following addresses to comment on this 
proposed AD:

     Federal eRulemaking Portal: Go to http://
www.regulations.gov. Follow the instructions for submitting comments.
     Fax: (202) 493-2251.
     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.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
Hawker Beechcraft Corporation, P.O. Box 85, Wichita, Kansas 67201-0085; 
telephone: 1 (800) 429-5372 or (316) 676-3140; fax: (316) 676-3340; 
Internet: http://hawkerbeechcraft.com.

FOR FURTHER INFORMATION CONTACT: Kevin Schwemmer, Aerospace Engineer, 
1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 
946-4174; fax: (316) 946-4107.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments regarding this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include the docket number, ``FAA-
2009-1176; Directorate Identifier 2009-CE-062-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://
www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive concerning this proposed AD.

Discussion

    We have received reports that on a Hawker Beechcraft Corporation 
Model G58 airplane a power wire shorted out on the brake reservoir 
tube, resulting in a fire in the nose wheel well. The 0.50-inch minimum 
clearance requirements may not have been met between the brake 
reservoir tube and the combustion heater fuel pump power wire below the 
left side of the nose baggage compartment.
    This condition, if not corrected, could result in chafing and 
shorting out of the electrical wiring and chafing of the tubing 
carrying flammable fluids, which could lead to a fire in the nose wheel 
well.

Relevant Service Information

    We have reviewed Hawker Beechcraft Mandatory Service Bulletin SB 
32-3898, dated November 2008.
    The service information describes procedures for:

     Inspecting the installation of stand-off hardware between 
the heater fuel line and the heater over-temperature sensor wires for 
minimum clearance;
     Installing acceptable stand-off hardware if stand-off 
hardware is missing or inadequate;
     Inspecting the brake reservoir line and the fuel heater 
power wire for damage and minimum clearance;
     Replacing any damaged wires and/or lines; and
     Installing stand-off hardware between the brake reservoir 
line and the fuel heater power wire if minimum clearance is not met.

FAA's Determination and Requirements of the Proposed AD

    We are proposing this AD because we evaluated all information and 
determined the unsafe condition described previously is likely to exist 
or develop on other products of the same type design. This proposed AD 
would require inspecting the installation of stand-off hardware between 
the heater fuel line and the heater over-temperature sensor wires for 
minimum clearance and installing acceptable stand-off hardware if 
stand-off hardware is missing or inadequate. This proposed AD would 
also require inspecting the brake reservoir line and the fuel heater 
power wire for damage and minimum clearance, replacing any damaged 
wires and/or lines, and installing stand-off hardware if minimum 
clearance is not met.

Costs of Compliance

    We estimate that this proposed AD would affect 71 airplanes in the 
U.S. registry.
    We estimate the following costs to do the proposed inspection of 
the heater fuel line, the heater over-temperature sensor wires, the 
brake reservoir line, and the fuel heater power wire:

----------------------------------------------------------------------------------------------------------------
                                                                                  Total cost per   Total cost on
                  Labor cost                               Parts cost                airplane     U.S. operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $80 per hour = $80..............  Not applicable..................             $80          $5,680
----------------------------------------------------------------------------------------------------------------


[[Page 66931]]

    We estimate the following costs to do any necessary stand-off 
hardware installation that would be required based on the results of 
the proposed inspection. We have no way of determining the number of 
airplanes that may need this installation:

------------------------------------------------------------------------
                                                          Total cost per
               Labor cost                   Parts cost       airplane
------------------------------------------------------------------------
.5 work-hour x $80 per hour = $40.......             $50             $90
------------------------------------------------------------------------

     We estimate the following costs to do any necessary replacement of 
the brake line that would be required based on the results of the 
proposed inspection. We have no way of determining the number of 
airplanes that may need this installation:

------------------------------------------------------------------------
                                                          Total cost per
               Labor cost                   Parts cost       airplane
------------------------------------------------------------------------
6 work-hours x $80 per hour = $480......            $100            $580
------------------------------------------------------------------------

    Hawker Beechcraft Corporation will allow warranty credit as 
specified in Hawker Beechcraft Mandatory Service Bulletin SB 32-3898, 
dated November 2008.

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.

Examining the AD Docket

    You may examine the AD docket that contains the proposed AD, the 
regulatory evaluation, any comments received, and other information on 
the Internet at http://www.regulations.gov; or in person at the Docket 
Management Facility between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. The Docket Office (telephone (800) 647-5527) 
is located at the street address stated in the ADDRESSES section. 
Comments will be available in the AD docket shortly after receipt.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, 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 FAA amends Sec.  39.13 by adding the following new AD:

Hawker Beechcraft Corporation: Docket No. FAA-2009-1176; Directorate 
Identifier 2009-CE-062-AD.

Comments Due Date

    (a) We must receive comments on this airworthiness directive 
(AD) action by February 1, 2010.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Model G58 airplanes, serial numbers TH-
2125 through TH-2172 and TH-2174 through TH-2220, that are 
certificated in any category.

Subject

    (d) Air Transport Association of America (ATA) Code 32: Landing 
Gear.

Unsafe Condition

    (e) This AD results from reports received of a power wire 
shorting out on the brake reservoir tube. We are issuing this AD to 
detect and correct inadequate clearance of the brake reservoir 
tubing and the heater fuel pump wiring, which could result in 
chafing and shorting out of the electrical wiring and chafing of the 
tubing carrying flammable fluids. This condition could lead to a 
fire in the nose wheel well.

Compliance

    (f) To address this problem, you must do the following, unless 
already done:

[[Page 66932]]



------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Inspect the installation  Within the next 50    Follow Hawker
 of the stand-off hardware     hours time-in-        Beechcraft
 between the heater fuel       service (TIS) after   Mandatory Service
 line and heater over-         the effective date    Bulletin SB 32-
 temperature sensor wires      of this AD or         3898, dated
 for minimum clearance.        within the next 12    November 2008.
                               months after the
                               effective date of
                               this AD, whichever
                               occurs first.
(2) If, during the            Before further        Follow Hawker
 inspection required in        flight after the      Beechcraft
 paragraph (f)(1) of this      inspection where      Mandatory Service
 AD, the stand-off hardware    the missing stand-    Bulletin SB 32-
 is not installed or it does   off hardware and/or   3898, dated
 not maintain the minimum      inadequate            November 2008.
 clearance, install stand-     clearance was found.
 off hardware as specified
 in the service information.
(3) Inspect the brake         Within the next 50    Follow Hawker
 reservoir line and the fuel   hours TIS after the   Beechcraft
 heater power wire for         effective date of     Mandatory Service
 damage.                       this AD or within     Bulletin SB 32-
                               the next 12 months    3898, dated
                               after the effective   November 2008.
                               date of this AD,
                               whichever occurs
                               first.
(4) If, during the            Before further        Follow Hawker
 inspection required in        flight after the      Beechcraft
 paragraph (f)(3) of this      inspection where      Mandatory Service
 AD, damage is found, repair   damaged tubing and/   Bulletin SB 32-
 or replace damaged tubing     or wiring was found.  3898, dated
 and/or wiring found.                                November 2008.
(5) Inspect the installation  Within the next 50    Follow Hawker
 of the stand-off hardware     hours TIS after the   Beechcraft
 between the brake reservoir   effective date of     Mandatory Service
 line and the fuel heater      this AD or within     Bulletin SB 32-
 power wire for minimum        the next 12 months    3898, dated
 clearance.                    after the effective   November 2008.
                               date of this AD,
                               whichever occurs
                               first.
(6) If, during the            Before further        Follow Hawker
 inspection required in        flight after the      Beechcraft
 paragraph (f)(5) of this      inspection where      Mandatory Service
 AD, the stand-off hardware    the missing stand-    Bulletin SB 32-
 is not installed or it does   off hardware and/or   3898, dated
 not maintain the minimum      inadequate            November 2008.
 clearance, install stand-     clearance was found.
 off hardware as specified
 in the service information.
------------------------------------------------------------------------

Alternative Methods of Compliance (AMOCs)

    (g) The Manager, Wichita Aircraft Certification Office (ACO), 
FAA, has the authority to approve AMOCs for this AD, if requested 
using the procedures found in 14 CFR 39.19. Send information to 
ATTN: Kevin Schwemmer, Aerospace Engineer, 1801 Airport Road, Room 
100, Wichita, Kansas 67209; telephone: (316) 946-4174; fax: (316) 
946-4107. 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.

Related Information

    (h) To get copies of the service information referenced in this 
AD, contact Hawker Beechcraft Corporation, P.O. Box 85, Wichita, 
Kansas 67201-0085; telephone: 1 (800) 429-5372 or (316) 676-3140; 
fax: (316) 676-3340; Internet: http://hawkerbeechcraft.com. To view 
the AD docket, go to U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue, SE., Washington, DC 20590, or on the Internet at 
http://www.regulations.gov.

    Issued in Kansas City, Missouri on December 8, 2009.
Margaret Kline,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E9-29984 Filed 12-16-09; 8:45 am]

BILLING CODE 4910-13-P
