Airworthiness Directives; Hawker Beechcraft Corporation Model 390 Airplanes

[Federal Register Volume 73, Number 222 (Monday, November 17, 2008)]
[Rules and Regulations]
[Pages 67714-67716]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E8-26879]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0492; Directorate Identifier 2008-CE-023-AD; 
Amendment 39-15734; AD 2008-23-13]
RIN 2120-AA64


Airworthiness Directives; Hawker Beechcraft Corporation Model 390 
Airplanes

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

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Hawker Beechcraft Corporation (HBC) Model 390 airplanes. This AD 
requires you to remove the current preformed packing, elbow fitting, 
and jam nut from the left and right hydraulic pump pressure output port 
and replace with new parts. This AD also requires you to install a 
hydraulic pump case drain check valve. This AD results from nine 
occurrences of hydraulic fluid leaking from the engine hydraulic pump 
output fitting as a result of an improperly installed elbow connecting 
the output port to the pulse dampener hose. We are issuing this AD to 
prevent hydraulic fluid leaks from the left and right hydraulic fluid 
pump and to prevent the flow of hydraulic fluid into the engine 
compartment. The loss of hydraulic fluid can result in loss of airplane 
hydraulic system pressure and the consequent loss of hydraulic system 
functions including gear extension/retraction, spoiler functions, and 
anti-skid braking system actuation. The inability of the hydraulic 
installation to isolate flow of hydraulic fluid could result in a 
hazardous amount of flammable fluid in the corresponding engine 
compartment. These conditions, if not corrected, could result in loss 
of system functions and/or fire in the engine compartment.

DATES: This AD becomes effective on December 22, 2008.
    On December 22, 2008, the Director of the Federal Register approved 
the incorporation by reference of certain publications listed in this 
AD.

ADDRESSES: For service information identified in this AD, contact 
Hawker Beechcraft Corporation, 9709 East Central, Wichita, Kansas 
67201; telephone: (316) 676-5034; fax: (316) 676-6614; Internet: 
https://www.hawkerbeechcraft.com/service_support/pubs/.
    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-2008-0492; 
Directorate Identifier 2008-CE-023-AD.

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

SUPPLEMENTARY INFORMATION:

Discussion

    On April 24, 2008, 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 Model 390 airplanes. This proposal was published 
in the Federal Register as a notice of proposed rulemaking (NPRM) on 
May 1, 2008 (73 FR 23988). The NPRM proposed to require you to remove 
the current preformed packing, elbow fitting, and jam nut from the left 
and right hydraulic pump pressure output port and replace with new 
parts. The NPRM also proposed to require you to install a hydraulic 
pump case drain check valve.

Comments

    We provided the public the opportunity to participate in developing 
this AD. We received no comments on the proposal or on the 
determination of the cost to the public.

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 182 airplanes in the U.S. 
registry.
    We estimate the following costs to do the modifications:

[[Page 67715]]



 
------------------------------------------------------------------------
                                                 Total cost   Total cost
            Labor cost              Parts cost      per        on U.S.
                                                  airplane    operators
------------------------------------------------------------------------
Hydraulic pressure output fitting         $100         $740     $134,680
 assembly: 8 work-hours x $80 per
 hour = $640.....................
Hydraulic pump case drain check          4,353        5,633    1,025,206
 valve: 16 work-hours x $80 per
 hour = $1,280...................
------------------------------------------------------------------------

    HBC will provide warranty credit as specified in Hawker Beechcraft 
Mandatory Service Bulletin SB 29-3869, dated January 2008; and Hawker 
Beechcraft Mandatory Service Bulletin SB 29-3851, dated January 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-2008-0492; Directorate Identifier 2008-CE-023-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 the following new AD:
2008-23-13 Hawker Beechcraft Corporation: Amendment 39-15734; Docket 
No. FAA-2008-0492; Directorate Identifier 2008-CE-023-AD.

Effective Date

    (a) This AD becomes effective on December 22, 2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Model 390 airplanes, serial numbers RB-4 
through RB-224, that are certificated in any category.

Unsafe Condition

    (d) This AD results from nine occurrences of hydraulic fluid 
leaking from the engine hydraulic pump output fitting as a result of 
an improperly installed elbow connecting the output port to the 
pulse dampener hose. We are issuing this AD to prevent hydraulic 
fluid leaking from the left and right hydraulic fluid pump and to 
prevent the flow of hydraulic fluid into the engine compartment. The 
loss of hydraulic fluid can result in loss of airplane hydraulic 
system pressure and the consequent loss of hydraulic system 
functions including gear extension/retraction, spoiler functions, 
and anti-skid braking system actuation. The inability of the 
hydraulic installation to isolate flow of hydraulic fluid could 
result in a hazardous amount of flammable fluid in the corresponding 
engine compartment. These conditions, if not corrected, could result 
in loss of system functions and/or fire in the engine compartment.

Compliance

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

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Remove current preformed  Within the next 200   Follow Hawker
 packing (part number (P/N)    hours time-in-        Beechcraft
 MS28778-6), elbow fitting     service (TIS) after   Mandatory Service
 (P/N MS21908J6), and jam      December 22, 2008     Bulletin SB 29-
 nut (P/N AN924-6J) from the   (the effective date   3869, dated January
 left and right hydraulic      of this AD) or        2008.
 pump pressure output port     within the next 6
 and install new preformed     months after
 packing (P/N MS28778-6),      December 22, 2008
 union (P/N MS21902J6), and    (the effective date
 swivel fitting (P/N           of this AD),
 NAS1762J0606) in the left     whichever occurs
 and right hydraulic           first.
 pressure pump output port.
(2) Install hydraulic pump    Within the next 200   Hawker Beechcraft
 case drain check valve Kit    hours TIS after       Mandatory Service
 No. 390-5803-0001.            December 22, 2008     Bulletin SB 29-
                               (the effective date   3851, dated January
                               of this AD) or        2008.
                               within the next 6
                               months after
                               December 22, 2008
                               (the effective date
                               of this AD),
                               whichever occurs
                               first.
------------------------------------------------------------------------


[[Page 67716]]

Alternative Methods of Compliance (AMOCs)

    (f) 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: Aaron Waters, Aerospace Engineer, Wichita ACO, 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

    (g) You must use Hawker Beechcraft Mandatory Service Bulletin SB 
29-3869, dated January 2008; and Hawker Beechcraft Mandatory Service 
Bulletin SB 29-3851, dated January 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, 9709 East Central, Wichita, Kansas 
67201; telephone: (316) 676-5034; fax: (316) 676-6614; Internet: 
https://www.hawkerbeechcraft.com/service_support/pubs/.
    (3) You may review copies at the FAA, Central Region, Office of 
the Regional Counsel, 901 Locust, Kansas City, Missouri 64106; or 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 November 5, 2008.
Patrick R. Mullen,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E8-26879 Filed 11-14-08; 8:45 am]
BILLING CODE 4910-13-P

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