[Federal Register Volume 59, Number 83 (Monday, May 2, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-10287]
[[Page Unknown]]
[Federal Register: May 2, 1994]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 29
[Docket No. 93-AWS-1; Special Condition No. 29-ASW-12]
Special Condition: European Helicopter Industries, Ltd., Model
EH-101 Helicopter, Electronic Instrument System
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final special condition.
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SUMMARY: This special condition is issued for the European Helicopter
Industries, Ltd., Model EH-101 helicopter. This helicopter will have a
novel or unusual design feature associated with the Electronic
Instrument System. This special condition contains additional safety
standards that the Administrator considers necessary to establish a
level of safety equivalent to that provided by the applicable
airworthiness standards.
EFFECTIVE DATE: May 2, 1994.
FOR FURTHER INFORMATION CONTACT: Mr. Carroll Wright, FAA, Rotorcraft
Directorate, Regulations Group, Fort Worth, Texas 76193-0111; telephone
(817) 222-5120.
SUPPLEMENTARY INFORMATION:
Background
European Helicopter Industries, Ltd., which consists of Westland
Helicopters of England and Agusta Helicopters of Italy, submitted
applications for type certificates dated September 20, 1988, to the FAA
Brussels Certification Office through the Civil Airworthiness
Authorities of the United Kingdom for the passenger carrying version of
the EH-101 and through the Registro Aeronautico Italiano of Italy for
the utility version.
The passenger version is a 30 passenger, long range helicopter
powered by three GE CT 7-6A engines with a maximum takeoff weight of
31,000 lbs. The utility version is a cargo or mixed passenger and cargo
helicopter that differs principally from the passenger version in that
the utility version has a ramp door incorporated in the rear fuselage.
Type Certification Basis
The certification basis established for the Model EH-101 helicopter
consists of 14 CFR part 29, including Amendments 29-1 through 29-27,
and 14 CFR parts 21 and 36; Amendments 21-61 and 36-14, respectively.
If the Administrator finds that the applicable airworthiness
regulations do not contain adequate or appropriate safety standards for
these helicopters because of a novel or unusual design feature, special
conditions are prescribed under the provisions of Sec. 21.16 to
establish a level of safety equivalent to that established in the
regulations.
Special conditions, as appropriate, are issued in accordance with
14 CFR 11.49 after public notice, as required by Secs. 11.28 and
11.29(b), and become part of the type certification basis in accordance
with Sec. 21.101(b)(2) for changes to the type certificates. In
addition to the applicable airworthiness regulations and special
conditions, the Model EH-101 must comply with the noise certification
requirements of part 36, Amendments 36-1 through 36-14.
Novel or Unusual Design Feature
The European Helicopter Industries, Ltd., Model EH-101 helicopter,
at the time of application, was identified as incorporating one and
possibly more electrical or electronic systems that will be performing
functions critical to the continued safe flight and landing of the
helicopter. The Electronic Instrument System displays attitude, flight
data, navigation data, engine, and transmission information. The
display of attitude, altitude, and airspeed to the pilot is critical to
the continued safe flight and landing of the helicopter for instrument
flight rules (IFR) operations in Instrument Meteorological Conditions.
If it is determined that this helicopter will incorporated other
electrical or electronic systems performing critical functions, those
systems also will be required to comply with the requirements of this
special condition.
Discussion of Comments
Notice of Proposed Special Condition No. SC-93-1-SW was published
in the Federal Register on January 8, 1993 (58 FR 3239). No comments
were received. Therefore, the special condition is adopted as proposed.
Conclusion
This action affects only certain unusual or novel design features
on one model of helicopter. 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 affected helicopter.
List of Subjects in 14 CFR Part 29
Aircraft, Air transportation, Aviation safety, Rotorcraft, Safety.
The authority citation for this special condition is as follows:
Authority: 49 U.S.C. 1344, 1348(c), 1352, 1354(a), 1355, 1421
through 1431, 1502, 1651(b)(2); 42 U.S. 1857f-10, 4321 et seq.; E.O.
11514, 49 U.S.C. 106(g).
The Special Condition
Accordingly, pursuant to the authority delegated to me by the
Administrator, the following special condition is issued as part of the
type certification basis for the European Helicopter, Ltd., Model EH-
101 helicopter.
Protection for Electrical and Electronic Systems From High Intensity
Radiated Fields
Each system that performs critical functions must be designed and
installed to ensure that the operation and operational capabilities of
these critical functions are not adversely affected when the helicopter
is exposed to high intensity radiated fields external to the
helicopter.
Issued in Fort Worth, Texas, on April 14, 1994.
Mark R. Schilling,
Acting Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 94-10287 Filed 4-29-94; 8:45 am]
BILLING CODE 4910-13-M
