suant to § 5.13(c), or in accordance with subsequent amendments to such regulations in effect on the date of application for approval of the change, subject to the following provisions:

(1) When the applicant elects to show compliance with an amendment to the regulations in effect on the date of application for approval of a change, he shall show compliance with all amendments which the Administrator finds are directly related to the particular amendment selected by the applicant.

(2) When the change consists of a new design or a substantially complete redesign of a component, equipment installation, or system installation of the glider, and the Administrator finds that the regulations incorporated by reference in the type certificate pursuant to § 5.13 (c) do not provide complete standards with respect to such change, he shall require compliance with such provisions of the regulations in effect on the date of application for approval of the change as he finds will provide a level of safety equal to that established by the regulations incorporated by reference at the time of issuance of the type certificate.

(e) If a change in design, configuration, or weight is made which the Administrator finds is so extensive as to require a substantially complete investigation of compliance with the regulations, the glider shall be considered as a new type, in which case a new application for type certificate shall be required and the regulations together with all amendments thereto effective on the date of the new application shall be made applicable in accordance with paragraphs (a), (b), (c), and (d) of this section.

[21 F.R. 1088, Feb. 17, 1956, as amended, 24 F.R. 5, 1959]

§ 5.13 Type certificate.

(a) An applicant shall be issued a type certificate when he demonstrates the eligibility of the glider by complying with the requirements of this part in addition to the applicable requirements in Part 1 of this subchapter.

(b) The type certificate shall be deemed to include the type design (see § 5.14 (b)), the operating limitations for the glider (see § 3.737 of this subchapter), and any other conditions or limitations prescribed by the regulations in this subchapter.

(c) The applicable provisions of this part recorded by the Administrator in accordance with § 5.12 shall be considered as incorporated in the type certificate as though set forth in full.

§ 5.14 Data required.

(a) The applicant for a type certificate shall submit to the Administrator such descriptive data, test reports, and computations as are necessary to demonstrate that the glider complies with the requirements of this part.

(b) The descriptive data required in paragraph (a) of this section shall be known as the type design and shall consist of such drawings and specifications as are necessary to disclose the configuration of the glider and all the design features covered in the requirements of this part, such information on dimensions, materials, and processes as is necessary to define the structural strength of the glider, and such other data as are necessary to permit by comparison the determination of the airworthiness of subsequent gliders of the same type.

§ 5.15 Inspections and tests.

Inspections and tests shall include all those found necessary by the Administrator to insure that the glider complies with the applicable airworthiness requirements and conforms to the following:

(a) All materials and products are in accordance with the specifications in the type design,

(b) All parts of the glider are constructed in accordance with the drawings in the type design,

(c) All manufacturing processes, construction, and assembly are as specified in the type design.

§ 5.16 Flight tests.

After proof of compliance with the structural requirements contained in this part, and upon completion of all necessary inspections and testing on the ground, and proof of the conformity of the glider with the type design, and upon receipt from the applicant of a report of flight tests performed by him, such official flight tests shall be conducted as the Administrator finds necessary to determine compliance with the requirements of this part.

§ 5.17 Airworthiness, experimental, and production certificates.

(For requirements with regard to these certificates see part 1 of this subchapter.)

§ 5.18 Approval of materials, parts, processes, and appliances.

(a) Materials, parts, processes, and appliances shall be approved upon a basis and in a manner found necessary by the Administrator to implement the pertinent provisions of this subchapter. The Administrator may adopt and publish such specifications as he finds necessary to administer this part, and shall incorporate therein such portions of the aviation industry, Federal, and military specifications respecting such materials, parts, processes, and appliances as he finds appropriate.

NOTE: The provisions of this paragraph are intended to allow approval of materials, parts, processes, and appliances under the system of Technical Standard Orders, or in conjunction with type certification procedures for a glider, or by any other form of approval by the Administrator.

(b) Any material, part, process, or appliance shall be deemed to have met the requirements for approval when it meets the pertinent specifications adopted by the Administrator, and the manufacturer so certifies in a manner prescribed by the Administrator.

§ 5.19 Changes in type design.

6.130 6.131

Stability.

GROUND AND WATER HANDLING

CHARACTERISTICS

General.

Ground resonance.

6.132 Spray characteristics.

6.743

6.744

Performance information.

Marking and placard information. ROTORCRAFT IDENTIFICATION DATA 6.750 Identification plate. 6.751 Identification marks.

AUTHORITY: §§ 6.0 to 6.751 issued under sec. 205, 52 Stat. 984, as amended; 49 U. S. C. 425. Interpret or apply secs. 601, 603, 52 Stat. 1007, as amended, 1009, as amended; 49 U. S. C. 551, 553.

AUTHORITY NOTE: Additional citation of authority to Part 6 was appended by Amendment 6-4, 24 F.R. 7074, Sept. 1, 1959, as follows: "(Secs. 313(a), 601, 603, 72 Stat. 752, 775, 776; 49 U.S.C. 1354(a), 1421, 1423)"

SOURCE: §§ 6.0 to 6.751 issued by the Civil Aeronautics Board, appear at 21 F. R. 10291, Dec. 22, 1956, except as otherwise noted.

NOTE: Sections of this part bearing two or more numbers to the right of the decimal point separated by a dash, are rules, policies or interpretations issued by the former Civil Aeronautics Administration (now the Federal Aviation Agency). Sources are cited to text.

CROSS REFERENCES: For Special Civil Air Regulation with respect to facilitation of experiments with exterior lighting systems, see SR-392B in Part 3 of this subchapter.

For Special Civil Air Regulation with respect to Class I and Class II provisional type

and airworthiness certificates for the operation of aircraft, see SR-425C in Part 1 of this subchapter.

Subpart A-General APPLICABILITY AND DEFINITIONS § 6.0 Applicability of this part.

This part contains standards with which compliance shall be demonstrated for the issuance of and changes to type certificates for rotorcraft. This part, until superseded or rescinded, shall apply to rotorcraft of any weight for which applications for type certification under this part were made between the effective date of this part (January 15, 1951) and August 1, 1956. For applications for type certificates made after August 1, 1956, this part shall apply only to rotorcraft which have a maximum weight of 6,000 pounds or less.

As used in this part, terms are defined as follows:

(a) Administration—(1) Administrator. The Administrator is the Administrator of the Federal Aviation Agency.

(2) Applicant. An applicant is a person or persons applying for approval of a rotorcraft or any part thereof.

(3) Approved. Approved, when used alone or as modifying terms such as means, devices, specifications, etc., means approved by the Administrator. (See § 6.18.)

(b) Rotorcraft types—(1) Rotorcraft. A rotorcraft is any aircraft deriving its principal lift from one or more rotors.

(2) Helicopter. A helicopter is a rotorcraft which depends principally for its support and motion in the air upon the lift generated by one or more powerdriven rotors, rotating on substantially vertical axes.

(3) Gyroplane. A gyroplane is a rotorcraft which depends principally for its support upon the lift generated by one or more rotors which are not power driven, except for initial starting, and which are caused to rotate by the action of the air when the rotorcraft is in motion. The propulsion is independent of the rotor system and usually consists of conventional propellers.

(4) Gyrodyne. A gyrodyne is a rotorcraft which depends principally for its support upon the lift generated by one or more rotors, which are partially power driven, rotating on substantially vertical