Special Conditions: Dassault-Aviation Mystere-Falcon 50 Airplanes; High-Intensity Radiated Fields (HIRF), 59988-59990 [05-20629]
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59988
Federal Register / Vol. 70, No. 198 / Friday, October 14, 2005 / Rules and Regulations
This order has the effect of excepting
the transactions specified below from
the definition of ‘‘federally related
transactions’’ in Title XI of FIRREA and
the agencies’ appraisal regulations, and
thereby from the statutory and
regulatory real estate appraisal
requirements for such transactions.
The Agencies also have determined
that the exceptions are consistent with
safety and soundness, subject to the
requirement that the depository
institution’s records relating to any
excepted transaction appropriately
document the following: (1) The
property involved was directly affected
by the major disaster or the transaction
would facilitate recovery from the
disaster; (2) there is a binding
commitment to fund the transaction that
is made within three years after the date
the major disaster was declared; and (3)
the value of the real property supports
the institution’s decision to enter into
the transaction. In addition, the
transaction must continue to be subject
to review by management and by the
Agencies in the course of examinations
of the institution.
Expiration Dates
Exceptions provided under this order
expire not later than three years after the
date on which the President determines,
pursuant to section 401 of the Robert T.
Stafford Disaster Relief and Emergency
Assistance Act, 42 U.S.C. 5170
(DREAA), that a major disaster exists in
the area. Accordingly, exceptions for the
major disasters declared due to
Hurricane Katrina expire on August 29,
2008, in Alabama, Mississippi and
Louisiana; and exceptions for the major
disasters declared due to Hurricane Rita
expire on September 24, 2008, in
Louisiana and Texas.
Order
In accordance with section 2 of
DIDRA, relief is hereby granted from the
provisions of Title XI of FIRREA and the
agencies’ appraisal regulations for any
real estate-related financial transaction
that requires the services of an appraiser
under those provisions, provided that:
(1) The transaction involves real
property located in an area that the
President has determined, pursuant to
section 401 of DREAA, is a major
disaster area as a result of Hurricane
Katrina (August 2005) in Alabama,
Louisiana, and Mississippi; or as a
result of Hurricane Rita (September
2005) in Louisiana and Texas, and has
been designated eligible for federal
assistance by FEMA; 3
3 Those areas designated by FEMA as receiving
‘‘Individual and Public Assistance (all categories)’’
VerDate Aug<31>2005
15:42 Oct 13, 2005
Jkt 208001
(2)(a) The real property involved was
directly affected by the major disaster;
or
(2)(b) The real property involved was
not directly affected by the major
disaster but the transaction would
facilitate recovery from the disaster;
(3) There is a binding commitment to
fund a transaction that is made within
three years after the date the major
disaster was declared by the President;
and
(4) The institution retains in its files,
for examiner review, appropriate
documentation indicating that the
requirements of Items (1)–(3) above are
met and supporting the valuation of the
real property involved in the
transaction.
Dated: October 4, 2005.
Jennifer J. Johnson,
Secretary of the Board.
By order of the Board of Directors.
Dated at Washington, DC, this 4th day of
October, 2005.
Federal Deposit Insurance Corporation.
Robert E. Feldman,
Executive Secretary.
Dated: October 6, 2005.
By the Office of Thrift Supervision.
John M. Reich,
Director.
By order of the National Credit Union
Administration.
Dated: October 4, 2005.
Mary F. Rupp,
Secretary of the Board.
Appendix
BILLING CODE 6714–01–P; 4810–33–P; 6210–01–P;
6720–01–P; 7535–01–P
Counties and parishes designated by FEMA
as receiving ‘‘Individual and Public
Assistance (all categories)’’ and ‘‘Individual
and Public Assistance (Categories A and B)’’
[FR Doc. 05–20583 Filed 10–13–05; 8:45 am]
DEPARTMENT OF TRANSPORTATION
Hurricane Katrina
Federal Aviation Administration
Alabama: Baldwin, Choctaw, Clarke, Greene,
Hale, Mobile, Pickens, Sumter, Tuscaloosa
and Washington
Louisiana: Acadia, Ascension, Assumption,
Calcasieu, Cameron, East Baton Rouge, East
Feliciana, Iberia, Iberville, Jefferson,
Jefferson Davis, Lafayette, Lafourche,
Livingston, Orleans, Pointe Coupee,
Plaquemines, St. Bernard, St. Charles, St.
Helena, St. James, St. John the Baptist, St.
Mary, St. Martin, St. Tammany,
Tangipahoa, Terrebonne, Vermilion,
Washington, West Baton Rouge, and West
Feliciana
Mississippi: Adams, Amite, Attala, Choctaw,
Claiborne, Clarke, Copiah, Covington,
Forrest, Franklin, George, Greene,
Hancock, Harrison, Hinds, Jackson, Jasper,
Jefferson, Jefferson Davis, Jones, Kemper,
Lamar, Lauderdale, Lawrence, Leake,
Lincoln, Lowndes, Madison, Marion,
Neshoba, Newton, Noxubee, Oktibbeha,
Pearl River, Perry, Pike, Rankin, Scott,
Simpson, Smith, Stone, Walthall, Warren,
Wayne, Wilkinson, Winston, and Yazoo.
14 CFR Part 25
Hurricane Rita
Louisiana: Acadia, Allen, Beauregard,
Calcasieu, Cameron, Iberia, Jefferson Davis,
Lafayette, Lafourche, St. Mary, Terrebonne,
and Vermilion
Texas: Chambers, Galveston, Hardin, Jasper,
Jefferson, Liberty, Newton, Orange, and
Tyler
Dated: October 5, 2005.
John C. Dugan,
Comptroller of the Currency.
By order of the Board of Governors of the
Federal Reserve System.
and ‘‘Individual and Public Assistance (Categories
A and B)’’ in Alabama, Mississippi, and Texas
counties and Louisiana parishes, as listed in the
appendix to this order.
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[Docket No. NM334; Special Conditions No.
25–305–SC]
Special Conditions: Dassault-Aviation
Mystere-Falcon 50 Airplanes; HighIntensity Radiated Fields (HIRF)
Federal Aviation
Administration (FAA), DOT.
ACTION: Final special conditions; request
for comments.
AGENCY:
SUMMARY: These special conditions are
issued for Dassault-Aviation MystereFalcon 50 airplanes modified by
Chippewa Aerospace, Inc. These
modified airplanes will have a novel or
unusual design feature when compared
to the state of technology envisioned in
the airworthiness standards for
transport category airplanes. The
modification incorporates the
installation of a Honeywell Primus Epic
Control Display System for Retrofit
(CDS–R) that performs critical
functions. The applicable airworthiness
regulations do not contain adequate or
appropriate safety standards for the
protection of these systems from the
effects of high-intensity radiated fields
(HIRF). These special conditions
contain the additional safety standards
that the Administrator considers
necessary to establish a level of safety
equivalent to that established by the
existing airworthiness standards.
DATES: The effective date of these
special conditions is October 4, 2005.
Comments must be received on or
before November 14, 2005.
E:\FR\FM\14OCR1.SGM
14OCR1
Federal Register / Vol. 70, No. 198 / Friday, October 14, 2005 / Rules and Regulations
Comments on these special
conditions may be mailed in duplicate
to: Federal Aviation Administration,
Transport Airplane Directorate,
Attention: Rules Docket (ANM–113),
Docket No. NM334, 1601 Lind Avenue
SW., Renton, Washington 98055–4056;
or delivered in duplicate to the
Transport Airplane Directorate at the
above address. All comments must be
marked: Docket No. NM334.
FOR FURTHER INFORMATION CONTACT: Greg
Dunn, FAA, Airplane and Flight Crew
Interface Branch, ANM–111, Transport
Airplane Directorate, Aircraft
Certification Service, 1601 Lind Avenue
SW., Renton, Washington 98055–4056;
telephone (425) 227–2799; facsimile
(425) 227–1320.
SUPPLEMENTARY INFORMATION:
ADDRESSES:
Comments Invited
The FAA has determined that notice
and opportunity for prior public
comment is impracticable because these
procedures would significantly delay
certification of the airplane and thus
delivery of the affected aircraft. In
addition, the substance of these special
conditions has been subject to the
public comment process in several prior
instances with no substantive comments
received. The FAA therefore finds that
good cause exists for making these
special conditions effective upon
issuance; however, the FAA invites
interested persons to participate in this
rulemaking by submitting written
comments, data, or views. The most
helpful comments reference a specific
portion of the special conditions,
explain the reason for any
recommended change, and include
supporting data. We ask that you send
us two copies of written comments.
We will file in the docket all
comments we receive, as well as a
report summarizing each substantive
public contact with FAA personnel
concerning these special conditions.
The docket is available for public
inspection before and after the comment
closing date. If you wish to review the
docket in person, go to the address in
the ADDRESSES section of this preamble
between 7:30 a.m. and 4 p.m., Monday
through Friday, except Federal holidays.
We will consider all comments we
receive on or before the closing date for
comments. We will consider comments
filed late if it is possible to do so
without incurring expense or delay. We
may change these special conditions
based on the comments we receive.
If you want the FAA to acknowledge
receipt of your comments on these
special conditions, include with your
comments a pre-addressed, stamped
VerDate Aug<31>2005
15:42 Oct 13, 2005
Jkt 208001
postcard on which the docket number
appears. We will stamp the date on the
postcard and mail it back to you.
Background
On January 5, 2005, Chippewa
Aerospace, Inc., 1601 Executive
Avenue, Myrtle Beach, South Carolina,
29577, applied for a supplemental type
certificate (STC) to modify DassaultAviation Mystere-Falcon 50 airplanes.
This model is currently approved under
Type Certificate No. A46EU. The
Dassault-Aviation Mystere-Falcon 50
airplanes are transport category
airplanes powered by three Allied
Signal TFE–731–3–1C turbine engines
with maximum takeoff weights of up to
40,780 pounds. These airplanes operate
with a 2-pilot crew and can seat up to
19 passengers. The modification
incorporates the installation of a
Honeywell Primus Epic Control Display
System for Retrofit (CDS–R). This
system performs a critical function
whose failure would prevent the
continued safe flight and landing of the
airplane. The integrated flightdeck
display system that will be installed in
this airplane has the potential to be
vulnerable to high-intensity radiated
fields (HIRF) external to the airplane.
Type Certification Basis
Under the provisions of 14 CFR
21.101, Chippewa Aerospace, Inc. must
show that the Dassault-Aviation
Mystere-Falcon 50 airplanes, as
changed, continue to meet the
applicable provisions of the regulations
incorporated by reference in Type
Certificate No. A46EU, or the applicable
regulations in effect on the date of
application for the change. The
regulations incorporated by reference in
the type certificate are commonly
referred to as the ‘‘original type
certification basis.’’ The certification
basis for Dassault-Aviation MystereFalcon 50 airplanes includes applicable
sections of 14 CFR part 25 as amended
by Amendment 25–1 through
Amendment 25–34, Special Conditions
No. 25–86–EU–24, 14 CFR part 36 as
amended by Amendment 36–1 through
Amendment 36–9, and SFAR 27 as
amended by Amendment 27–1. In
addition, the certification basis includes
certain special conditions, exemptions,
equivalent levels of safety, or later
amended sections of the applicable part
25 that are not relevant to these special
conditions.
If the Administrator finds that the
applicable airworthiness regulations
(i.e., part 25, as amended) do not
contain adequate or appropriate safety
standards for Dassault-Aviation
Mystere-Falcon 50 airplanes because of
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59989
a novel or unusual design feature,
special conditions are prescribed under
the provisions of § 21.16.
In addition to the applicable
airworthiness regulations and special
conditions, the Dassault-Aviation
Mystere-Falcon 50 airplanes must
comply with the fuel vent and exhaust
emission requirements of 14 CFR part
34 and the noise certification
requirements of 14 CFR part 36.
Special conditions, as defined in 14
CFR 11.19, are issued in accordance
with § 11.38 and become part of the type
certification basis in accordance with
§ 21.101.
Special conditions are initially
applicable to the model for which they
are issued. Should Chippewa
Aerospace, Inc. apply at a later date for
a STC to modify any other model
included on Type Certificate No. A46EU
to incorporate the same or similar novel
or unusual design feature, these special
conditions would also apply to the other
model under the provisions of § 21.101.
Novel or Unusual Design Features
As noted earlier, the DassaultAviation Mystere-Falcon 50 airplanes
modified by Chippewa Aerospace, Inc.
will incorporate a Honeywell Primus
Epic CDS–R that will perform critical
functions. This system may be
vulnerable to high-intensity radiated
fields (HIRF) external to the airplane.
The current airworthiness standards of
part 25 do not contain adequate or
appropriate safety standards for the
protection of this equipment from the
adverse effects of HIRF. Accordingly,
this system is considered to be a novel
or unusual design feature.
Discussion
There is no specific regulation that
addresses protection requirements for
electrical and electronic systems from
HIRF. Increased power levels from
ground-based radio transmitters and the
growing use of sensitive avionics/
electronics and electrical systems to
command and control airplanes have
made it necessary to provide adequate
protection.
To ensure that a level of safety is
achieved equivalent to that intended by
the regulations incorporated by
reference, special conditions are needed
for the Dassault-Aviation MystereFalcon 50 airplanes modified by
Chippewa Aerospace, Inc. These special
conditions require that new avionics/
electronics and electrical systems that
perform critical functions be designed
and installed to preclude component
damage and interruption of function
due to both the direct and indirect
effects of HIRF.
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59990
Federal Register / Vol. 70, No. 198 / Friday, October 14, 2005 / Rules and Regulations
High-Intensity Radiated Fields (HIRF)
With the trend toward increased
power levels from ground-based
transmitters, and the advent of space
and satellite communications coupled
with electronic command and control of
the airplane, the immunity of critical
avionics/electronics and electrical
systems to HIRF must be established.
It is not possible to precisely define
the HIRF to which the airplane will be
exposed in service. There is also
uncertainty concerning the effectiveness
of airframe shielding for HIRF.
Furthermore, coupling of
electromagnetic energy to cockpitinstalled equipment through the cockpit
window apertures is undefined. Based
on surveys and analysis of existing HIRF
emitters, an adequate level of protection
exists when compliance with the HIRF
protection special condition is shown
with either paragraph 1 or 2 below:
1. A minimum threat of 100 volts rms
(root-mean-square) per meter electric
field strength from 10 KHz to 18 GHz.
a. The threat must be applied to the
system elements and their associated
wiring harnesses without the benefit of
airframe shielding.
b. Demonstration of this level of
protection is established through system
tests and analysis.
2. A threat external to the airframe of
the field strengths identified in the table
below for the frequency ranges
indicated. Both peak and average field
strength components from the table are
to be demonstrated.
Frequency
Field strength
(volts per meter)
Peak
10 kHz–100 kHz .............
100 kHz–500 kHz ...........
500 kHz–2 MHz ..............
2 MHz–30 MHz ...............
30 MHz–70 MHz .............
70 MHz–100 MHz ...........
100 MHz–200 MHz .........
200 MHz–400 MHz .........
400 MHz–700 MHz .........
700 MHz–1 GHz .............
1 GHz–2 GHz .................
2 GHz–4 GHz .................
4 GHz–6 GHz .................
6 GHz–8 GHz .................
8 GHz–12 GHz ...............
12 GHz–18 GHz .............
18 GHz–40 GHz .............
Average
50
50
50
100
50
50
100
100
700
700
2000
3000
3000
1000
3000
2000
600
50
50
50
100
50
50
100
100
50
100
200
200
200
200
300
200
200
The field strengths are expressed in terms of
peak of the root-mean-square (rms) over
the complete modulation period.
The threat levels identified above are
the result of an FAA review of existing
studies on the subject of HIRF, in light
of the ongoing work of the
VerDate Aug<31>2005
15:42 Oct 13, 2005
Jkt 208001
Electromagnetic Effects Harmonization
Working Group of the Aviation
Rulemaking Advisory Committee.
Applicability
As discussed above, these special
conditions are applicable to DassaultAviation Mystere-Falcon 50 airplanes
modified by Chippewa Aerospace, Inc.
Should Chippewa Aerospace, Inc. apply
at a later date for a STC to modify any
other model included on Type
Certificate No. A46EU to incorporate the
same or similar novel or unusual design
feature, these special conditions would
apply to that model as well under the
provisions of § 21.101.
Conclusion
This action affects only certain novel
or unusual design features on DassaultAviation Mystere-Falcon 50 airplanes
modified by Chippewa Aerospace, Inc.
It is not a rule of general applicability
and affects only the applicant who
applied to the FAA for approval of these
features on the airplane.
The substance of these special
conditions has been subjected to the
notice and comment procedure in
several prior instances and has been
derived without substantive change
from those previously issued. Because a
delay would significantly affect the
certification of the airplane, which is
imminent, the FAA has determined that
prior public notice and comment are
unnecessary and impracticable, and
good cause exists for adopting these
special conditions upon issuance. The
FAA is requesting comments to allow
interested persons to submit views that
may not have been submitted in
response to the prior opportunities for
comment described above.
List of Subjects in 14 CFR Part 25
Aircraft, Aviation safety, Reporting
and recordkeeping requirements.
The authority citation for these
special conditions is as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701,
44702, 44704.
The Special Conditions
Accordingly, pursuant to the
authority delegated to me by the
Administrator, the following special
conditions are issued as part of the
supplemental type certification basis for
the Dassault-Aviation Mystere-Falcon
50 airplanes modified by Chippewa
Aerospace, Inc.
1. Protection from Unwanted Effects
of HIRF. Each electrical and electronic
system that performs critical functions
must be designed and installed to
ensure that the operation and
operational capability of these systems
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Frm 00004
Fmt 4700
Sfmt 4700
to perform critical functions are not
adversely affected when the airplane is
exposed to high-intensity radiated
fields.
2. For the purpose of these special
conditions, the following definition
applies: Critical Functions: Functions
whose failure would contribute to or
cause a failure condition that would
prevent the continued safe flight and
landing of the airplane.
Issued in Renton, Washington, on October
4, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 05–20629 Filed 10–13–05; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 71
[Docket No. FAA–2005–20322; Airspace
Docket No. 05–ANM–1]
RIN 2120–AA66
Establishment and Revision of Area
Navigation (RNAV) Routes; Western
United States
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
SUMMARY: This action establishes three
area navigation (RNAV) routes and
revises one existing RNAV route in the
Western United States (U.S.) in support
of the High Altitude Redesign (HAR)
program. The FAA originally proposed
to revise two area navigation routes as
part of this action, but one revised route
(Q–11) was deleted because the
proposed change provided limited
benefit. The FAA is taking this action to
enhance safety and to improve the
efficient use of the navigable airspace in
the Western U.S.
EFFECTIVE DATE: 0901 UTC, December
22, 2005.
FOR FURTHER INFORMATION CONTACT: Ken
McElroy, Airspace and Rules, Office of
System Operations Airspace and AIM,
Federal Aviation Administration, 800
Independence Avenue, SW.,
Washington, DC 20591; telephone: (202)
267–8783.
SUPPLEMENTARY INFORMATION:
History
On May 25, 2005, the FAA published
in the Federal Register a notice of
proposed rulemaking (NPRM) to
establish three and revise two ‘‘Q’’
routes in the Western U.S. Interested
E:\FR\FM\14OCR1.SGM
14OCR1
]]>Agencies
[Federal Register Volume 70, Number 198 (Friday, October 14, 2005)]
[Rules and Regulations]
[Pages 59988-59990]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-20629]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
[Docket No. NM334; Special Conditions No. 25-305-SC]
Special Conditions: Dassault-Aviation Mystere-Falcon 50
Airplanes; High-Intensity Radiated Fields (HIRF)
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final special conditions; request for comments.
-----------------------------------------------------------------------
SUMMARY: These special conditions are issued for Dassault-Aviation
Mystere-Falcon 50 airplanes modified by Chippewa Aerospace, Inc. These
modified airplanes will have a novel or unusual design feature when
compared to the state of technology envisioned in the airworthiness
standards for transport category airplanes. The modification
incorporates the installation of a Honeywell Primus Epic Control
Display System for Retrofit (CDS-R) that performs critical functions.
The applicable airworthiness regulations do not contain adequate or
appropriate safety standards for the protection of these systems from
the effects of high-intensity radiated fields (HIRF). These special
conditions contain the additional safety standards that the
Administrator considers necessary to establish a level of safety
equivalent to that established by the existing airworthiness standards.
DATES: The effective date of these special conditions is October 4,
2005. Comments must be received on or before November 14, 2005.
[[Page 59989]]
ADDRESSES: Comments on these special conditions may be mailed in
duplicate to: Federal Aviation Administration, Transport Airplane
Directorate, Attention: Rules Docket (ANM-113), Docket No. NM334, 1601
Lind Avenue SW., Renton, Washington 98055-4056; or delivered in
duplicate to the Transport Airplane Directorate at the above address.
All comments must be marked: Docket No. NM334.
FOR FURTHER INFORMATION CONTACT: Greg Dunn, FAA, Airplane and Flight
Crew Interface Branch, ANM-111, Transport Airplane Directorate,
Aircraft Certification Service, 1601 Lind Avenue SW., Renton,
Washington 98055-4056; telephone (425) 227-2799; facsimile (425) 227-
1320.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA has determined that notice and opportunity for prior public
comment is impracticable because these procedures would significantly
delay certification of the airplane and thus delivery of the affected
aircraft. In addition, the substance of these special conditions has
been subject to the public comment process in several prior instances
with no substantive comments received. The FAA therefore finds that
good cause exists for making these special conditions effective upon
issuance; however, the FAA invites interested persons to participate in
this rulemaking by submitting written comments, data, or views. The
most helpful comments reference a specific portion of the special
conditions, explain the reason for any recommended change, and include
supporting data. We ask that you send us two copies of written
comments.
We will file in the docket all comments we receive, as well as a
report summarizing each substantive public contact with FAA personnel
concerning these special conditions. The docket is available for public
inspection before and after the comment closing date. If you wish to
review the docket in person, go to the address in the ADDRESSES section
of this preamble between 7:30 a.m. and 4 p.m., Monday through Friday,
except Federal holidays.
We will consider all comments we receive on or before the closing
date for comments. We will consider comments filed late if it is
possible to do so without incurring expense or delay. We may change
these special conditions based on the comments we receive.
If you want the FAA to acknowledge receipt of your comments on
these special conditions, include with your comments a pre-addressed,
stamped postcard on which the docket number appears. We will stamp the
date on the postcard and mail it back to you.
Background
On January 5, 2005, Chippewa Aerospace, Inc., 1601 Executive
Avenue, Myrtle Beach, South Carolina, 29577, applied for a supplemental
type certificate (STC) to modify Dassault-Aviation Mystere-Falcon 50
airplanes. This model is currently approved under Type Certificate No.
A46EU. The Dassault-Aviation Mystere-Falcon 50 airplanes are transport
category airplanes powered by three Allied Signal TFE-731-3-1C turbine
engines with maximum takeoff weights of up to 40,780 pounds. These
airplanes operate with a 2-pilot crew and can seat up to 19 passengers.
The modification incorporates the installation of a Honeywell Primus
Epic Control Display System for Retrofit (CDS-R). This system performs
a critical function whose failure would prevent the continued safe
flight and landing of the airplane. The integrated flightdeck display
system that will be installed in this airplane has the potential to be
vulnerable to high-intensity radiated fields (HIRF) external to the
airplane.
Type Certification Basis
Under the provisions of 14 CFR 21.101, Chippewa Aerospace, Inc.
must show that the Dassault-Aviation Mystere-Falcon 50 airplanes, as
changed, continue to meet the applicable provisions of the regulations
incorporated by reference in Type Certificate No. A46EU, or the
applicable regulations in effect on the date of application for the
change. The regulations incorporated by reference in the type
certificate are commonly referred to as the ``original type
certification basis.'' The certification basis for Dassault-Aviation
Mystere-Falcon 50 airplanes includes applicable sections of 14 CFR part
25 as amended by Amendment 25-1 through Amendment 25-34, Special
Conditions No. 25-86-EU-24, 14 CFR part 36 as amended by Amendment 36-1
through Amendment 36-9, and SFAR 27 as amended by Amendment 27-1. In
addition, the certification basis includes certain special conditions,
exemptions, equivalent levels of safety, or later amended sections of
the applicable part 25 that are not relevant to these special
conditions.
If the Administrator finds that the applicable airworthiness
regulations (i.e., part 25, as amended) do not contain adequate or
appropriate safety standards for Dassault-Aviation Mystere-Falcon 50
airplanes because of a novel or unusual design feature, special
conditions are prescribed under the provisions of Sec. 21.16.
In addition to the applicable airworthiness regulations and special
conditions, the Dassault-Aviation Mystere-Falcon 50 airplanes must
comply with the fuel vent and exhaust emission requirements of 14 CFR
part 34 and the noise certification requirements of 14 CFR part 36.
Special conditions, as defined in 14 CFR 11.19, are issued in
accordance with Sec. 11.38 and become part of the type certification
basis in accordance with Sec. 21.101.
Special conditions are initially applicable to the model for which
they are issued. Should Chippewa Aerospace, Inc. apply at a later date
for a STC to modify any other model included on Type Certificate No.
A46EU to incorporate the same or similar novel or unusual design
feature, these special conditions would also apply to the other model
under the provisions of Sec. 21.101.
Novel or Unusual Design Features
As noted earlier, the Dassault-Aviation Mystere-Falcon 50 airplanes
modified by Chippewa Aerospace, Inc. will incorporate a Honeywell
Primus Epic CDS-R that will perform critical functions. This system may
be vulnerable to high-intensity radiated fields (HIRF) external to the
airplane. The current airworthiness standards of part 25 do not contain
adequate or appropriate safety standards for the protection of this
equipment from the adverse effects of HIRF. Accordingly, this system is
considered to be a novel or unusual design feature.
Discussion
There is no specific regulation that addresses protection
requirements for electrical and electronic systems from HIRF. Increased
power levels from ground-based radio transmitters and the growing use
of sensitive avionics/electronics and electrical systems to command and
control airplanes have made it necessary to provide adequate
protection.
To ensure that a level of safety is achieved equivalent to that
intended by the regulations incorporated by reference, special
conditions are needed for the Dassault-Aviation Mystere-Falcon 50
airplanes modified by Chippewa Aerospace, Inc. These special conditions
require that new avionics/electronics and electrical systems that
perform critical functions be designed and installed to preclude
component damage and interruption of function due to both the direct
and indirect effects of HIRF.
[[Page 59990]]
High-Intensity Radiated Fields (HIRF)
With the trend toward increased power levels from ground-based
transmitters, and the advent of space and satellite communications
coupled with electronic command and control of the airplane, the
immunity of critical avionics/electronics and electrical systems to
HIRF must be established.
It is not possible to precisely define the HIRF to which the
airplane will be exposed in service. There is also uncertainty
concerning the effectiveness of airframe shielding for HIRF.
Furthermore, coupling of electromagnetic energy to cockpit-installed
equipment through the cockpit window apertures is undefined. Based on
surveys and analysis of existing HIRF emitters, an adequate level of
protection exists when compliance with the HIRF protection special
condition is shown with either paragraph 1 or 2 below:
1. A minimum threat of 100 volts rms (root-mean-square) per meter
electric field strength from 10 KHz to 18 GHz.
a. The threat must be applied to the system elements and their
associated wiring harnesses without the benefit of airframe shielding.
b. Demonstration of this level of protection is established through
system tests and analysis.
2. A threat external to the airframe of the field strengths
identified in the table below for the frequency ranges indicated. Both
peak and average field strength components from the table are to be
demonstrated.
------------------------------------------------------------------------
Field strength
(volts per meter)
Frequency ------------------
Peak Average
------------------------------------------------------------------------
10 kHz-100 kHz....................................... 50 50
100 kHz-500 kHz...................................... 50 50
500 kHz-2 MHz........................................ 50 50
2 MHz-30 MHz......................................... 100 100
30 MHz-70 MHz........................................ 50 50
70 MHz-100 MHz....................................... 50 50
100 MHz-200 MHz...................................... 100 100
200 MHz-400 MHz...................................... 100 100
400 MHz-700 MHz...................................... 700 50
700 MHz-1 GHz........................................ 700 100
1 GHz-2 GHz.......................................... 2000 200
2 GHz-4 GHz.......................................... 3000 200
4 GHz-6 GHz.......................................... 3000 200
6 GHz-8 GHz.......................................... 1000 200
8 GHz-12 GHz......................................... 3000 300
12 GHz-18 GHz........................................ 2000 200
18 GHz-40 GHz........................................ 600 200
------------------------------------------------------
The field strengths are expressed in terms of peak of the root-mean-
square (rms) over the complete modulation period.
------------------------------------------------------------------------
The threat levels identified above are the result of an FAA review
of existing studies on the subject of HIRF, in light of the ongoing
work of the Electromagnetic Effects Harmonization Working Group of the
Aviation Rulemaking Advisory Committee.
Applicability
As discussed above, these special conditions are applicable to
Dassault-Aviation Mystere-Falcon 50 airplanes modified by Chippewa
Aerospace, Inc. Should Chippewa Aerospace, Inc. apply at a later date
for a STC to modify any other model included on Type Certificate No.
A46EU to incorporate the same or similar novel or unusual design
feature, these special conditions would apply to that model as well
under the provisions of Sec. 21.101.
Conclusion
This action affects only certain novel or unusual design features
on Dassault-Aviation Mystere-Falcon 50 airplanes modified by Chippewa
Aerospace, Inc. It is not a rule of general applicability and affects
only the applicant who applied to the FAA for approval of these
features on the airplane.
The substance of these special conditions has been subjected to the
notice and comment procedure in several prior instances and has been
derived without substantive change from those previously issued.
Because a delay would significantly affect the certification of the
airplane, which is imminent, the FAA has determined that prior public
notice and comment are unnecessary and impracticable, and good cause
exists for adopting these special conditions upon issuance. The FAA is
requesting comments to allow interested persons to submit views that
may not have been submitted in response to the prior opportunities for
comment described above.
List of Subjects in 14 CFR Part 25
Aircraft, Aviation safety, Reporting and recordkeeping
requirements.
The authority citation for these special conditions is as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701, 44702, 44704.
The Special Conditions
Accordingly, pursuant to the authority delegated to me by the
Administrator, the following special conditions are issued as part of
the supplemental type certification basis for the Dassault-Aviation
Mystere-Falcon 50 airplanes modified by Chippewa Aerospace, Inc.
1. Protection from Unwanted Effects of HIRF. Each electrical and
electronic system that performs critical functions must be designed and
installed to ensure that the operation and operational capability of
these systems to perform critical functions are not adversely affected
when the airplane is exposed to high-intensity radiated fields.
2. For the purpose of these special conditions, the following
definition applies: Critical Functions: Functions whose failure would
contribute to or cause a failure condition that would prevent the
continued safe flight and landing of the airplane.
Issued in Renton, Washington, on October 4, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-20629 Filed 10-13-05; 8:45 am]
BILLING CODE 4910-13-P
