[Federal Register: February 2, 2005 (Volume 70, Number 21)]
[Proposed Rules]
[Page 5387-5390]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr02fe05-15]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-20251; Directorate Identifier 2004-NM-164-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 detect damage of certain wiring in the
flight compartment, performing corrective actions if necessary,
modifying certain wiring connections, and revising the airplane flight
manual. This proposed AD is prompted by reports of miswiring in the
power distribution system. We are proposing this AD to ensure that the
flightcrew is aware of the source of battery power for certain
equipment, and to prevent damage to wiring and surrounding equipment
that could result in smoke or fire on the airplane.
DATES: We must receive comments on this proposed AD by March 21, 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.
By fax: (202) 493-2251.
[[Page 5388]]
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.
For service information identified in this proposed AD, contact
Raytheon Aircraft Company, Department 62, P.O. Box 85, Wichita, Kansas
67201-0085.
You can examine the contents of this 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., Room PL-401,
on the plaza level of the Nassif Building, Washington, DC. This docket
number is FAA-2005-20251; the directorate identifier for this docket is
2004-NM-164-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 under ADDRESSES. Include ``Docket No. FAA-2005-20251;
Directorate Identifier 2004-NM-164-AD'' in the subject line 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 submitted 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 can review DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78), or you
can visit http://dms.dot.gov.
Examining the Docket
You can 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 DMS receives them.
Discussion
We have received a report indicating that miswiring in the flight
compartment has been found on Raytheon Model Hawker 800XP airplanes. In
one case, this miswiring affects the radio emergency switch, which is
intended to ensure that the flightcrew is able to use navigation and
communication radios when the airplane batteries are depleted during an
electrical emergency. However, activating the radio emergency switch
under normal aircraft operating conditions links the 35-amp essential
radio bus and the radio emergency bus, which results in several wires
being connected to the 35-amp essential radio bus without protection by
circuit breakers or fuses. If one of these wires were to short to
ground or be exposed to excessive current flow, wires, connectors,
relays, or surrounding circuits or equipment may be damaged. Operating
the radio emergency switch in accordance with the Emergency Procedures
section of the airplane flight manual (AFM) will not cause the
condition. In another case, miswiring has resulted in battery no. 3
supplying power to equipment that the Emergency Procedures section of
the AFM identifies as being supplied by battery no. 4 and vice versa.
These conditions, if not corrected, could cause the flightcrew to be
misled about the source of battery power for certain equipment, or
could lead to damage to wiring and surrounding equipment that could
result in smoke or fire on the airplane.
Relevant Service Information
We have reviewed Raytheon Service Bulletin 24-3555, Revision 1,
dated June 2004. Part 1 of the service bulletin describes procedures
for visually inspecting for damage (primarily, but not limited to,
evidence of heat damage) of wiring in the flight compartment. If any
damage is found, corrective actions include performing repairs, or
replacing damaged wiring with new wiring and replacing, with new parts,
any relays or connectors from which damaged wiring extends. Part 2 of
the service bulletin describes procedures for modifying certain wiring
connections in the flight compartment, which includes replacing a
certain circuitbreaker switch with an improved part, installing new
busbars, and replacing a certain circuitbreaker with an improved part.
The service bulletin also specifies revising the Emergency
Procedures section of the AFM to include a certain temporary change. We
have reviewed Raytheon Hawker 800XP Temporary Change 140-590032-
0005TC7, dated June 3, 2003, which is intended to inform the flightcrew
which standby batteries provide power to what equipment once the
actions in Raytheon Service Bulletin 24-3555, Revision 1, have been
done.
Accomplishing the actions specified in Raytheon Service Bulletin
24-3555, Revision 1, is intended to adequately address the unsafe
condition.
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. Therefore, 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 Information.''
Clarification of Inspection Type
Raytheon Service Bulletin 24-3555, Revision 1, specifies visually
inspecting for damage of certain wiring in the flight compartment. We
find that the procedures described in the service bulletin constitute a
detailed inspection. Note 1 of this proposed AD defines what we mean by
``detailed inspection.''
Differences Between the Proposed AD and Service Information
Where Raytheon Service Bulletin 24-3555, Revision 1, specifies
contacting the manufacturer for information on certain actions, this
proposed AD requires that, before further flight, you must contact the
FAA. Then, before further flight, any applicable action specified by
the FAA must be accomplished in accordance with a method approved by
the FAA.
Raytheon Service Bulletin 24-3555, Revision 1, specifies that, on
certain airplanes equipped with Airshow Cabin Display, the actions in
Raytheon Service Bulletin 24-3664 must be done concurrently with or
subsequent to the actions in Part 2 of Raytheon Service Bulletin 24-
3555, Revision 1. We have determined that it is not necessary for this
proposed AD to require accomplishing Raytheon Service
[[Page 5389]]
Bulletin 24-3664. It is possible to do all of the applicable actions in
Raytheon Service Bulletin 24-3555, Revision 1, without first doing the
actions in Raytheon Service Bulletin 24-3664.
Although the Accomplishment Instructions of Raytheon Service
Bulletin 24-3555, Revision 1, describe procedures for reporting
compliance with the service bulletin, this proposed AD would not
require that action.
Costs of Compliance
There are about 45 airplanes of the affected design in the
worldwide fleet. The following table provides the estimated costs for
U.S. operators to comply with this proposed AD.
Estimated Costs
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Number of U.S.-
Action Work hours Average labor Parts Cost per registered Fleet cost
rate per hour airplane airplanes
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Inspection................................... 18 $65 None..................... $1,170 30 $35,100
Modification................................. 6 65 $435 825 30 24,750
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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. 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 FAA amends Sec. 39.13 by adding the following new
airworthiness directive (AD):
Raytheon Aircraft Company: Docket No. FAA-2005-20251; Directorate
Identifier 2004-NM-164-AD.
Comments Due Date
(a) The Federal Aviation Administration (FAA) must receive
comments on this AD action by March 21, 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 258608 inclusive.
Unsafe Condition
(d) This AD was prompted by reports of miswiring in the power
distribution system. We are issuing this AD to ensure that the
flightcrew is aware of the source of battery power for certain
equipment, and to prevent damage to wiring and surrounding equipment
that 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.
Service Information Reference
(f) The term ``service bulletin,'' as used in this AD, means
Raytheon Service Bulletin 24-3555, Revision 1, dated June 2004.
(1) Where the service bulletin specifies contacting the
manufacturer for information, this proposed AD requires, before
further flight, contacting the Manager, Wichita Aircraft
Certification Office (ACO), FAA. Then, before further flight, any
applicable action specified by the Manager, Wichita ACO, must be
accomplished in accordance with a method approved by the Manager,
Wichita ACO.
(2) The service bulletin also refers to Raytheon Hawker 800XP
Temporary Change 140-590032-0005TC7, dated June 3, 2003, which is
intended to be inserted into the Emergency Procedures section of the
airplane flight manual to inform the flightcrew which standby
batteries provide power to what equipment once the actions in the
service bulletin have been done.
(3) Where the service bulletin specifies to report compliance
information to the manufacturer, this AD does not include that
requirement.
Inspection
(g) Within 50 flight hours or 30 days after the effective date
of this AD, whichever is first: Perform a detailed inspection for
damage (primarily but not limited to evidence of heat damage) of
wiring in the flight compartment, and all applicable corrective
actions, by doing all actions in part 1 of the Accomplishment
Instructions of the service bulletin, except as provided by
paragraphs (f)(1) and (f)(3) of this AD. Any applicable corrective
action must be done before further flight.
Note 1: For the purposes of this AD, a detailed inspection is:
``An intensive examination of a specific item, installation, or
assembly to detect damage, failure, or irregularity. Available
lighting is normally supplemented with a direct source of good
lighting at an intensity deemed appropriate. Inspection aids such as
mirror, magnifying lenses, etc., may be necessary. Surface cleaning
and elaborate procedures may be required.''
[[Page 5390]]
Modification
(h) At the applicable time specified in paragraph (h)(1) or
(h)(2) of this AD, modify wiring in the flight compartment by doing
all actions in accordance with part 2 of the Accomplishment
Instructions of the service bulletin. Following accomplishment of
the actions in part 2 of the service bulletin, before further
flight, do all actions associated with the functional test,
including revising the Emergency Procedures section of the Raytheon
Hawker 800XP Airplane Flight Manual to include the information in
Temporary Change Part Number 140-590032-0005TC7, in accordance with
the Accomplishment Instructions of the service bulletin.
(1) If no damage was found during the inspection required by
paragraph (g) of this AD: Do paragraph (h) within 300 flight hours
or 180 days after the effective date of this AD, whichever is first.
(2) If any damage is found during the inspection required by
paragraph (g) of this AD: Do paragraph (h) before further flight
after the damage is found.
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.
Issued in Renton, Washington, on January 26, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-1925 Filed 2-1-05; 8:45 am]
BILLING CODE 4910-13-P