[Federal Register Volume 70, Number 207 (Thursday, October 27, 2005)]
[Proposed Rules]
[Pages 61914-61916]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-21438]


 ========================================================================
 Proposed Rules
                                                 Federal Register
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 This section of the FEDERAL REGISTER contains notices to the public of 
 the proposed issuance of rules and regulations. The purpose of these 
 notices is to give interested persons an opportunity to participate in 
 the rule making prior to the adoption of the final rules.
 
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 

  Federal Register / Vol. 70, No. 207 / Thursday, October 27, 2005 / 
Proposed Rules  

[[Page 61914]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-22749; Directorate Identifier 2005-NM-188-AD]
RIN 2120-AA64


Airworthiness Directives; Raytheon Model Hawker 800XP Airplanes

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

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for certain Raytheon Model Hawker 800XP airplanes. This proposed AD 
would require inspecting to determine if the correct fuse is installed 
on the hydraulic over-temperature switch on panel ZK in the rear 
equipment bay, and replacing the existing fuse if necessary. This 
proposed AD results from a report of the installation of an incorrect 
fuse on the over-temperature switch on panel ZK in the rear equipment 
bay during airplane maintenance. We are proposing this AD to prevent a 
short circuit in the fuse and consequent heat damage to associated 
wiring and surrounding equipment, which could result in smoke or fire 
on the airplane.

DATES: We must receive comments on this proposed AD by December 12, 
2005.

ADDRESSES: Use one of the following addresses to submit comments on 
this proposed AD.
     DOT Docket Web site: Go to http://dms.dot.gov and follow 
the instructions for sending your comments electronically.
     Government-wide rulemaking Web site: Go to http://www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, room PL-401, 
Washington, DC 20590.
     Fax: (202) 493-2251.
     Hand Delivery: Room PL-401 on the plaza level of the 
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    Contact Raytheon Aircraft Company, Department 62, P.O. Box 85, 
Wichita, Kansas, 67201-0085 for the service information identified in 
this proposed AD.

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

Comments Invited

    We invite you to submit any relevant written data, views, or 
arguments regarding this proposed AD. Send your comments to an address 
listed in the ADDRESSES section. Include the docket number ``FAA-2005-
22749; Directorate Identifier 2005-NM-188-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://dms.dot.gov, including any personal information you provide. We will 
also post a report summarizing each substantive verbal contact with FAA 
personnel concerning this proposed AD. Using the search function of 
that web site, anyone can find and read the comments in any of our 
dockets, including the name of the individual who sent the comment (or 
signed the comment on behalf of an association, business, labor union, 
etc.). You may review DOT's complete Privacy Act Statement in the 
Federal Register published on April 11, 2000 (65 FR 19477-78), or you 
may visit http://dms.dot.gov.

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 DOT 
street address stated in the ADDRESSES section. Comments will be 
available in the AD docket shortly after the Docket Management System 
receives them.

Discussion

    We have received a report of the installation of an incorrect fuse 
on the over-temperature switch on panel ZK in the rear equipment bay on 
Raytheon Model Hawker 800XP airplanes. The manufacturer indicated that, 
during airplane maintenance, a 20-amp fuse, instead of the required 3-
amp fuse, may have inadvertently been installed on fuse F1 of the ZK 
panel. This condition, if not corrected, could result in a short 
circuit in the fuse and consequent heat damage to associated wiring and 
surrounding equipment, which could result in smoke or fire on the 
airplane.

Relevant Service Information

    We have reviewed Raytheon Service Bulletin SB 24-3724, dated May 
2005. The service bulletin describes procedures for inspecting to 
determine if a 20-amp fuse is installed on the hydraulic over-
temperature switch on panel ZK in the rear equipment bay, and replacing 
any 20-amp fuse with a 3-amp fuse. The service bulletin also recommends 
reporting compliance with the service bulletin and contacting the 
manufacturer if signs of damage are found on associated terminals and 
wires.

FAA's Determination and Requirements of the Proposed AD

    We have evaluated all pertinent information and identified an 
unsafe condition that is likely to exist or develop on other airplanes 
of this same type design. For this reason, we are proposing this AD, 
which would require accomplishing the actions specified in the service 
information described previously, except as discussed under 
``Differences Between the Proposed AD and Service Bulletin.''

Differences Between the Proposed AD and Service Bulletin

    Where the service bulletin specifies contacting the manufacturer if 
any sign

[[Page 61915]]

of damage is found on associated terminals and wires, this proposed AD 
would require that, before further flight, you must contact the FAA for 
applicable repair actions. Then, before further flight, accomplish the 
applicable repair actions specified by the FAA in accordance with a 
method approved by the FAA.
    Although the Accomplishment Instructions of the service bulletin 
describe procedures for reporting compliance with the service bulletin, 
this proposed AD would not require that action.
    The service bulletin refers only to an ``inspection'' to ensure 
that a 20-amp fuse is not installed. We have determined that the 
procedures in the service bulletin should be described as a ``general 
visual inspection.'' Note 1 has been included in this proposed AD to 
define this type of inspection.

Clarification of Service Bulletin Note

    The Raytheon service bulletin includes a note in the Accomplishment 
Instructions to inform operators to contact Raytheon ``should any 
difficulty be encountered'' in accomplishing the service bulletin. We 
have included Note 2 in this proposed AD to clarify that any deviation 
from the instructions provided in the service bulletin must be approved 
as an alternative method of compliance under paragraph (g) of this 
proposed AD.

Costs of Compliance

    There are about 138 airplanes of the affected design in the 
worldwide fleet. This proposed AD would affect about 110 airplanes of 
U.S. registry. The proposed actions would take about 2 work hours per 
airplane, at an average labor rate of $65 per work hour. Required parts 
cost is negligible. Based on these figures, the estimated cost of the 
proposed AD for U.S. operators is $14,300, or $130 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.
    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. 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, 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 Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

Raytheon Aircraft Company: Docket No. FAA-2005-22749; Directorate 
Identifier 2005-NM-188-AD.

Comments Due Date

    (a) The FAA must receive comments on this AD action by December 
12, 2005.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Raytheon Model Hawker 800XP airplanes, 
certificated in any category, serial numbers 258541, 258556, and 
258567 through 258713 inclusive.

Unsafe Condition

    (d) This AD results from a report of the installation of an 
incorrect fuse on the over-temperature switch on panel ZK in the 
rear equipment bay during airplane maintenance. We are issuing this 
AD to prevent a short circuit in the fuse and consequent heat damage 
to associated wiring and surrounding equipment, which could result 
in smoke or fire on the airplane.

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.

Inspect and Replace if Necessary

    (f) Within 50 flight hours or 30 days after the effective date 
of this AD, whichever is first: Do a general visual inspection to 
determine if a 20-amp fuse is installed on the hydraulic over-
temperature switch on panel ZK in the rear equipment bay in 
accordance with the Accomplishment Instructions of Raytheon Service 
Bulletin SB 24-3724, dated May 2005. If a 20-amp fuse is installed, 
before further flight, replace with a 3-amp fuse in accordance with 
the Accomplishment Instructions of the service bulletin.

    Note 1: For the purposes of this AD, a general visual inspection 
is: ``A visual examination of an interior or exterior area, 
installation, or assembly to detect obvious damage, failure, or 
irregularity. This level of inspection is made from within touching 
distance unless otherwise specified. A mirror may be necessary to 
enhance visual access to all exposed surfaces in the inspection 
area. This level of inspection is made under normally available 
lighting conditions such as daylight, hangar lighting, flashlight, 
or droplight and may require removal or opening of access panels or 
doors. Stands, ladders, or platforms may be required to gain 
proximity to the area being checked.''


    Note 2: A note in the Accomplishment Instructions of the 
Raytheon service bulletin instructs operators to contact Raytheon if 
any difficulty is encountered in accomplishing the service bulletin. 
However, any deviation from the instructions provided in the service 
bulletin must be approved as an alternative method of compliance 
(AMOC) under paragraph (g) of this AD.

Repair Approval

    (g) Where the Raytheon Service Bulletin SB 24-3724, dated May 
2005, says to contact the manufacturer if any sign of damage is 
found on associated terminals and wires: Before further flight, 
contact the Manager, Wichita Aircraft Certification Office, FAA, for 
applicable repair actions; then, before further flight, accomplish 
the applicable repair actions specified according to a method 
approved by the Manager, Wichita Aircraft Certification Office.

[[Page 61916]]

Alternative Methods of Compliance (AMOCs)

    (h)(1) The Manager, Wichita Aircraft Certification Office, has 
the authority to approve AMOCs for this AD, if requested in 
accordance with the procedures found in 14 CFR 39.19.
    (2) Before using any AMOC approved in accordance with Sec.  
39.19 on any airplane to which the AMOC applies, notify the 
appropriate principal inspector in the FAA Flight Standards 
Certificate Holding District Office.

    Issued in Renton, Washington, on October 18, 2005.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-21438 Filed 10-26-05; 8:45 am]
BILLING CODE 4910-13-P