[Federal Register Volume 72, Number 81 (Friday, April 27, 2007)]
[Rules and Regulations]
[Pages 20933-20935]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-8112]



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Rules and Regulations
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Federal Register / Vol. 72, No. 81 / Friday April 27, 2007 / Rules 
and Regulations

[[Page 20933]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. NM377; Special Conditions No. 25-353-SC]


Special Conditions: Dassault Falcon Fan Jet, Fan Jet Series D, 
Series E, Series F, Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-F5, and 
Mystere-Falcon 200 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 Falcon Fan 
Jet, Fan Jet Series D, Series E, Series F, Mystere-Falcon 20-C5, 20-D5, 
20-E5, 20-F5, and Mystere-Falcon 200 airplanes modified by 3S 
Certification, LLC. These modified airplanes will have novel or unusual 
design features when compared with the state of technology envisioned 
in the airworthiness standards for transport category airplanes. The 
modification installs Thommen AD 30 Repeater Altimeters and a Skylight 
ADC 600 Air Data Converter Unit. The applicable airworthiness 
regulations do not contain adequate or appropriate safety standards for 
protecting these systems from 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 for these special conditions is April 20, 
2007. We must receive your comments by June 11, 2007.

ADDRESSES: You may mail or deliver comments on these special conditions 
in duplicate to: Federal Aviation Administration, Transport Airplane 
Directorate, Attention: Rules Docket (ANM-113), Docket No. NM377, 1601 
Lind Avenue, SW., Renton, Washington 98057-3356. You must mark your 
comments Docket No. NM377. You may inspect comments in the Rules Docket 
weekdays, except Federal holidays, between 7:30 a.m. and 4 p.m.

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 98057-3356; telephone (425) 227-2799; facsimile (425) 227-
1320.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    The FAA has determined that notice and opportunity for prior public 
comment for these special conditions is impracticable, because these 
procedures would significantly delay certification and 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. We therefore 
find that good cause exists for making these special conditions 
effective upon issuance. However, we invite interested persons to take 
part in this rulemaking by submitting written comments. 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 
about these special conditions. You may inspect the docket 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 by 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 December 21, 2006, 3S Certification, LLC of Nixa, MO, applied to 
the Wichita Aircraft Certification Office for a Supplemental Type 
Certificate to modify Dassault Falcon Fan Jet, Fan Jet Series D, Series 
E, Series F, Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-F5, and Mystere-
Falcon 200 airplanes approved under Type Certificate No. A7EU. These 
are transport category airplanes powered by two turbojet engines with 
maximum takeoff weights of up to 18,000 pounds. The airplanes operate 
with a 2-pilot crew and can seat up to 8 passengers. The proposed 
modification installs Thommen AD 30 Repeater Altimeters and a Skylight 
ADC 600 Air Data Converter Unit. These systems have a potential to be 
vulnerable to HIRF external to the airplane.

Type Certification Basis

    Under provisions of 14 CFR 21.101, 3S Certification, LLC must show 
that the Dassault Falcon Fan Jet, Fan Jet Series D, Series E, Series F, 
Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-F5, and Mystere-Falcon 200 
airplanes, as changed, continue to meet the applicable provisions of 
the regulations incorporated by reference in Type Certificate No. A7EU 
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 type certification basis for the modified 
Dassault Falcon Fan Jet, Fan Jet Series D, Series E, and Series F 
airplanes includes the applicable paragraphs of CAR 4b, as amended by 
Amendments 4b-1 through 4b-12; Special Regulations SR-422B and 14 CFR 
part 25 as amended by provisions of Amendment 25-4 in lieu of CAR 
4b.350(e) and (f). The type certification basis for the Dassault 
Mystere-Falcon 200 airplanes includes the applicable paragraphs of CAR 
4b, as amended by Amendments 4b-1 through 4b-12;

[[Page 20934]]

Special Regulations SR-422B and 14 CFR part 25 as amended by certain 
sections of Amendments 25-1 through 25-46; SFAR 27 as amended by 
Amendments 27-1 through 27-3; and 14 CFR part 36 as amended by 
Amendments 36-1 through 36-12. The type certification basis for the 
Dassault Mystere-Falcon 20-C5, 20-D5, 20-E5, and 20-F5 airplanes 
includes the applicable paragraphs of CAR 4b, as amended by Amendments 
4b-1 through 4b-12; Special Regulations SR-422B and 14 CFR part 25 as 
amended by certain sections in Amendments 25-1 through 25-56; Sec.  
25.904 and Appendix 1 as amended by Amendment 25-62; SFAR 27 as amended 
by Amendments 27-1 through 27-6; and 14 CFR part 36 as amended by 
Amendments 36-1 through 36-15. In addition, the type certification 
basis includes certain later amended sections of the applicable part 25 
regulations that are not relevant to these special conditions.
    If the Administrator finds that the applicable airworthiness 
regulations (part 25, as amended) do not contain adequate or 
appropriate safety standards for the Dassault Falcon Fan Jet, Fan Jet 
Series D, Series E, Series F, Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-
F5, and Mystere-Falcon 200 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 Falcon Fan Jet, Fan Jet Series D, Series E, 
Series F, Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-F5, and Mystere-Falcon 
200 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.
    The FAA issues special conditions, as defined in Sec.  11.19, under 
Sec.  11.38, and they become part of the type certification basis under 
the provisions of Sec.  21.101.
    Special conditions are initially applicable to the model for which 
they are issued. Should 3S Certification, LLC apply later for a 
supplemental type certificate to modify any other model included on 
Type Certificate No. A7EU, as applicable, 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 Falcon Fan Jet, Fan Jet Series D, 
Series E, Series F, Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-F5, and 
Mystere-Falcon 200 airplanes modified by 3S Certification, LLC will 
incorporate repeater altimeters and an air data converter unit, that 
will perform critical functions. These systems may be vulnerable to 
HIRF external to the airplane. Current airworthiness standards of part 
25 do not contain adequate or appropriate safety standards for 
protecting this equipment from adverse effects of HIRF. Therefore, 
these systems are considered to be novel or unusual design features.

Discussion

    There is no specific regulation that addresses protection for 
electrical and electronic systems from HIRF. Increased power levels 
from radio frequency 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 Falcon Fan Jet, Fan Jet Series 
D, Series E, Series F, Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-F5, and 
Mystere-Falcon 200 airplanes modified by 3S Certification, LLC. 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 because of HIRF.

High-Intensity Radiated Fields (HIRF)

    With the trend toward increased power levels from ground-based 
transmitters, and the advent of space and satellite communication 
coupled with electronic command and control of the airplane, the 
immunity of critical digital avionics/electronics and electrical 
systems to HIR must be established.
    It is not possible to precisely define the HIRF to which the 
airplane will be exposed in service. There is also uncertainly 
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 an 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 environment of 100 volts rms (root-mean-square) per 
meter electric field strength from 10 KHz to 18 GHz.
    a. System elements and their associated wiring harnesses must be 
exposed to the environment without benefit of airframe shielding.
    b. Demonstration of this level of protection is established through 
system tests and analysis.
    2. An environment external to the airframe of the field strengths 
shown in the table below for the frequency ranges indicated. Immunity 
to both peak and average field strength components from the table must 
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 environment levels identified above are the result of an FAA 
review of existing studies on the subject of HIRF and of the work of 
the Electromagnetic Effects Harmonization Working Group of the Aviation 
Rulemaking Advisory Committee.

Applicability

    These special conditions are applicable to Dassault Falcon Fan Jet, 
Fan Jet Series D, Series E, Series F, Mystere-Falcon 20-C5, 20-D5, 20-
E5, 20-F5, and Mystere-Falcon 200 airplanes modified by 3S 
Certification, LLC. Should 3S Certification, LLC apply later for a 
supplemental type certificate to modify any other model included on 
Type Certificate No. A7EU to incorporate the same or similar novel or 
unusual design feature, these special conditions would apply to that 
model as well under provisions of Sec.  21.101.

Conclusion

    This action affects only certain novel or unusual design features 
on Dassault Falcon Fan Jet, Fan Jet Series D, Series E, Series F, 
Mystere-Falcon 20-C5, 20-D5, 20-E5, 20-F5, and Mystere-Falcon 200 
airplanes modified by 3S Certification, LLC. It is not a rule of

[[Page 20935]]

general applicability and affects only the applicant which applied to 
the FAA for approval of these design features on the airplane.
    The substance of the special conditions for these airplanes 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 immediately. The FAA is requesting comments to allow 
interested people to submit views that may not have been submitted in 
response to the prior opportunities for comment.

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 Falcon Fan 
Jet, Fan Jet Series D, Series E, Series F, Mystere-Falcon 20-C5, 20-D5, 
20-E5, 20-F5, and Mystere-Falcon 200 airplanes modified by 3S 
Certification, LLC.
    1. Protection From Unwanted Effects of High-Intensity Radiated 
Fields (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 continued 
safe flight and landing of the airplane.

    Issued in Renton, Washington, on April 20, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E7-8112 Filed 4-26-07; 8:45 am]
BILLING CODE 4910-13-P