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AGENCY: Federal Aviation Administration
(FAA), DOT.
ACTION: Final rule.
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:
Are consistent with the intent that was proposed in the NPRM for correcting
the unsafe condition; and
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:
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Labor Cost
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Parts Cost
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Total Cost
Per Airplane
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Total Cost
on U.S. Operators
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1 work-hour
X $85 per hour = $85
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Not applicable
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$85
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$6,035
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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:
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Labor Cost
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Parts Cost
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Total Cost
Per Airplane
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.5 work-hour
X $85 per hour = $42.50
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$50
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$92.50
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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:
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Labor Cost
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Parts Cost
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Total Cost
Per Airplane
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6 work-hours
X $85 per hour = $510
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$100
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$610
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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
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
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. FAA amends Sec. 39.13 by adding a new AD to read as follows:
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