Airworthiness Directives; Hawker Beechcraft Corporation Model G58 Airplanes

[Federal Register Volume 75, Number 47 (Thursday, March 11, 2010)]
[Rules and Regulations]
[Pages 11433-11435]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-5024]


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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; 
Amendment 39-16226; AD 2010-06-02]
RIN 2120-AA64


Airworthiness Directives; Hawker Beechcraft Corporation Model G58 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Hawker Beechcraft Corporation Model G58 airplanes. This AD requires 
inspecting the installation of stand-off hardware between the heater 
fuel line and the heater over-temperature sensor wires and also brake 
reservoir tubing and the heater fuel pump wiring for minimum clearance 
and installing acceptable stand-off hardware if stand-off hardware is 
missing or inadequate. 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.

DATES: This AD becomes effective on April 15, 2010.
    On April 15, 2010, the Director of the Federal Register approved 
the incorporation by reference of certain publications listed in this 
AD.

ADDRESSES: To get the service information identified 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://www.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. The docket number is FAA-2009-1176; 
Directorate Identifier 2009-CE-062-AD.

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

SUPPLEMENTARY INFORMATION: 

Discussion

    On December 8, 2009, we issued a proposal to amend part 39 of the 
Federal Aviation Regulations (14 CFR part 39) to include an AD that 
would apply to certain Hawker Beechcraft Corporation Model G58 
airplanes. This proposal was published in the Federal Register as a 
notice of proposed rulemaking (NPRM) on December 17, 2009 (74 FR 
66930). The NPRM proposed to require inspecting the installation of 
stand-off hardware between the heater fuel line and the heater over-
temperature sensor wires and also brake reservoir tubing and the heater 
fuel pump wiring for minimum clearance and installing acceptable stand-
off hardware if stand-off hardware is missing or inadequate.

Comments

    We provided the public the opportunity to participate in developing 
this AD. The following presents the comments received on the proposal 
and FAA's response to each comment:

Comment Issue No. 1: Effective Date

    Mr. Busby states we should make the effective date of the AD 
immediate.
    The FAA disagrees. We carefully reviewed the data for this safety 
concern to assess the risk level of this particular event. After 
reviewing the data, we compared this safety concern with similar safety 
concerns in the past. Then, we assigned a level of risk for this 
particular event equivalent to the level of risk assigned to the 
similar past safety concerns we used for comparison. With the 
information we have at this time, we set the time frame to comply with 
the actions for this AD similar to the time frame that was set for 
similar safety concerns that had equivalent risk levels. Without 
additional information to increase the risk level of this safety 
concern we have determined that the time frame set for complying with 
this safety concern is in line with past precedent.
    We are not changing the final rule AD action based on this comment.

Comment Issue No. 2: Work-Hours

    Mr. Busby states that the work-hours allotted to do the proposed 
inspection are not enough. We infer the commenter wants us to increase 
the work-hours to do the proposed inspection to relieve the pressure on 
mechanics.
    The FAA disagrees. For this AD, we derived the work-hours from the 
Hawker Beechcraft Corporation service information. Those work-hours 
were used to calculate the estimated cost impact on the owners/
operators of the affected airplanes. The FAA uses that cost estimate in 
the economic analysis to determine if the AD will have a substantial 
impact on small entities. In general, the direct cost to an operator is 
the most significant economic consideration of an AD. Since the work-
hours in the AD are estimates for determining cost impact to the 
operator, maintenance personnel may take more or less time to do the 
inspection and/or maintenance as is necessary for that particular 
aircraft or task. Moderately increasing the estimated work-hours for 
the initial inspection does not significantly increase the cost impact 
on the operator.
    We are not changing the final rule AD action based on this comment.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD as proposed 
except for minor editorial corrections. We have determined that these 
minor corrections:
    <bullet> Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
    <bullet> Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Costs of Compliance

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

[[Page 11434]]



----------------------------------------------------------------------------------------------------------------
                                                                               Total cost per     Total cost on
                 Labor cost                             Parts cost                airplane       U.S. operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $85 per hour = $85............  Not applicable................               $85            $6,035
----------------------------------------------------------------------------------------------------------------

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

------------------------------------------------------------------------
                                                            Total cost
               Labor cost                   Parts cost     per airplane
------------------------------------------------------------------------
.5 work-hour x $85 per hour = $42.50....             $50          $92.50
------------------------------------------------------------------------

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

------------------------------------------------------------------------
                                                            Total cost
               Labor cost                   Parts cost     per airplane
------------------------------------------------------------------------
6 work-hours x $85 per hour = $510......            $100            $610
------------------------------------------------------------------------

     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 AD.

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 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 summary of the costs to comply with this AD (and 
other information as included in the Regulatory Evaluation) and placed 
it in the AD Docket. You may get a copy of this summary by sending a 
request to us at the address listed under ADDRESSES. Include ``Docket 
No. FAA-2009-1176; Directorate Identifier 2009-CE-062-AD'' in your 
request.

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, 
the Federal Aviation Administration amends part 39 of the Federal 
Aviation Regulations (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. FAA amends Sec.  39.13 by adding a new AD to read as follows:

2010-06-02 Hawker Beechcraft Corporation: Amendment 39-16226; Docket 
No. FAA-2009-1176; Directorate Identifier 2009-CE-062-AD.

Effective Date

    (a) This AD becomes effective on April 15, 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 11435]]



 
------------------------------------------------------------------------
           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-         April 15, 2010 (the   Bulletin SB 32-
 temperature sensor wires      effective date of     3898, dated
 for minimum clearance.        this AD) or within    November 2008.
                               the next 12 months
                               after April 15,
                               2010 (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       Beechcraft
 heater power wire for         April 15, 2010 (the   Mandatory Service
 damage.                       effective date of     Bulletin SB 32-
                               this AD) or within    3898, dated
                               the next 12 months    November 2008.
                               after April 15,
                               2010 (the effective
                               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       Beechcraft
 between the brake reservoir   April 15, 2010 (the   Mandatory Service
 line and the fuel heater      effective date of     Bulletin SB 32-
 power wire for minimum        this AD) or within    3898, dated
 clearance.                    the next 12 months    November 2008.
                               after April 15,
                               2010 (the effective
                               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, FAA Wichita Aircraft 
Certification Office, 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.

Material Incorporated by Reference

    (h) You must use Hawker Beechcraft Mandatory Service Bulletin SB 
32-3898, dated November 2008, to do the actions required by this AD, 
unless the AD specifies otherwise.
    (1) The Director of the Federal Register approved the 
incorporation by reference of this service information under 5 
U.S.C. 552(a) and 1 CFR part 51.
    (2) For service information identified 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://www.hawkerbeechcraft.com.
    (3) You may review copies of the service information 
incorporated by reference for this AD at the FAA, Central Region, 
Office of the Regional Counsel, 901 Locust, Kansas City, Missouri 
64106. For information on the availability of this material at the 
Central Region, call (816) 329-3768.
    (4) You may also review copies of the service information 
incorporated by reference for this AD at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, call (202) 741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Kansas City, Missouri, on March 2, 2010.
Sandra J. Campbell,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2010-5024 Filed 3-10-10; 8:45 am]
BILLING CODE 4910-13-P

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