Airworthiness Directives; Raytheon Model HS.125 Series 700A Airplanes, Model BAe.125 Series 800A Airplanes, and Model Hawker 800 and Hawker 800XP Airplanes

[Federal Register Volume 70, Number 147 (Tuesday, August 2, 2005)]
[Rules and Regulations]
[Pages 44273-44274]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-15011]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-20111; Directorate Identifier 2004-NM-154-AD; 
Amendment 39-14207; AD 2005-16-02]
RIN 2120-AA64


Airworthiness Directives; Raytheon Model HS.125 Series 700A 
Airplanes, Model BAe.125 Series 800A Airplanes, and Model Hawker 800 
and Hawker 800XP Airplanes

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

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Raytheon Model HS.125 series 700A airplanes, Model BAe.125 
series 800A airplanes, and Model Hawker 800 and Hawker 800XP airplanes. 
This AD requires inspecting to determine the current rating of the 
circuit breakers of certain cockpit ventilation and avionics cooling 
system blowers; and replacing the circuit breakers and modifying the 
blower wiring, as applicable. This AD results from a report indicating 
that a blower motor seized up and gave off smoke. We are issuing this 
AD to prevent smoke and fumes in the cockpit in the event that a blower 
motor seizes and overheats due to excessive current draw.

DATES: Effective September 6, 2005.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in the AD as of September 6, 
2005.

ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street, SW., Nassif Building, 
Room PL-401, Washington, DC.
    Contact Raytheon Aircraft Company, Department 62, P.O. Box 85, 
Wichita, Kansas 67201-0085, for service information identified in this 
AD.

FOR FURTHER INFORMATION CONTACT: Philip Petty, Aerospace Engineer, 
Electrical Systems Branch, 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:

Examining the Docket

    You may examine the AD docket on the Internet at http://dms.dot.gov 
or in person at the Docket Management Facility office between 9 a.m. 
and 5 p.m., Monday through Friday, except Federal holidays. The Docket 
Management Facility office (telephone (800) 647-5227) is located on the 
plaza level of the Nassif Building at the street address stated in the 
ADDRESSES section.

Discussion

    The FAA issued a supplemental notice of proposed rulemaking (NPRM) 
to amend 14 CFR part 39 to include an AD that would apply to certain 
Raytheon Model HS.125 series 700A airplanes, Model BAe.125 series 800A 
airplanes, and Model Hawker 800 and Hawker 800XP airplanes. That 
supplemental NPRM was published in the Federal Register on May 9, 2005 
(70 FR 24341). That supplemental NPRM proposed to require inspecting to 
determine the current rating of the circuit breakers of certain cockpit 
ventilation and avionics cooling system blowers; and replacing the 
circuit breakers and modifying the blower wiring, as applicable.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We received no comments on the NPRM 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.

Costs of Compliance

    There are about 350 airplanes of the affected design in the 
worldwide fleet. This AD will affect about 250 airplanes of U.S. 
registry. The required inspection will take about 1 work hour per 
airplane, at an average labor rate of $65 per work hour. Based on these 
figures, the estimated cost of this AD on U.S. operators is $16,250, or 
$65 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.

[[Page 44274]]

    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 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 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 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, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 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]

0
2. The Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):
2005-16-02 Raytheon Aircraft Company: Amendment 39-14207. Docket No. 
FAA-2005-20111; Directorate Identifier 2004-NM-154-AD.

Effective Date

    (a) This AD becomes effective September 6, 2005.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Raytheon Model HS.125 series 700A 
airplanes, BAe.125 series 800A airplanes, and Model Hawker 800 and 
Hawker 800XP airplanes; certificated in any category; equipped with 
Brailsford TBL-2.5 blowers; as identified in Raytheon Service 
Bulletin SB 24-3272, Revision 1, dated October 2000.

Unsafe Condition

    (d) This AD results from a report indicating that a cockpit 
ventilation and avionics cooling system blower motor seized up and 
gave off smoke. We are issuing this AD to prevent smoke and fumes in 
the cockpit in the event that a blower motor seizes and overheats 
due to excessive current draw.

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 Corrective Actions

    (f) Within 600 flight hours or 6 months after the effective date 
of this AD, whichever occurs first, inspect to determine the current 
rating of the circuit breakers of certain cockpit ventilation and 
avionics cooling system blowers; and, before further flight, replace 
the circuit breakers and modify the blower wiring, as applicable; by 
doing all the actions in accordance with the Accomplishment 
Instructions of Raytheon Service Bulletin SB 24-3272, Revision 1, 
dated October 2000; except as provided by paragraphs (g) and (h) of 
this AD.

Contacting the Manufacturer

    (g) Where the service bulletin specifies contacting the 
manufacturer for information if any difficulties are encountered 
while accomplishing the service bulletin, this AD requires you to 
contact the Manager, Wichita Aircraft Certification Office (ACO), 
FAA.

No Reporting Requirement

    (h) Although the service bulletin referenced in this AD 
specifies to submit certain information to the manufacturer, this AD 
does not include this requirement.

Alternative Methods of Compliance (AMOCs)

    (i) The Manager, Wichita ACO, has the authority to approve AMOCs 
for this AD, if requested in accordance with the procedures found in 
14 CFR 39.19.

Material Incorporated by Reference

    (j) You must use Raytheon Service Bulletin SB 24-3272, Revision 
1, dated October 2000, to perform the actions that are required by 
this AD, unless the AD specifies otherwise. The Director of the 
Federal Register approved the incorporation by reference of this 
document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. 
Contact Raytheon Aircraft Company, Department 62, P.O. Box 85, 
Wichita, Kansas 67201-0085, for a copy of this service information. 
You may review copies at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street SW., Room PL-401, 
Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration 
(NARA). For information on the availability of this material at the 
NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Renton, Washington, on July 21, 2005.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-15011 Filed 8-1-05; 8:45 am]
BILLING CODE 4910-13-P

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