[Code of Federal Regulations]
[Title 14, Volume 1]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR21.35]

[Page 123-124]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 21--CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS--Table of Contents
 
                      Subpart B--Type Certificates
 
Sec. 21.35  Flight tests.

    (a) Each applicant for an aircraft type certificate (other than 
under Secs. 21.24 through 21.29) must make the tests listed in paragraph 
(b) of this section. Before making the tests the applicant must show--
    (1) Compliance with the applicable structural requirements of this 
subchapter;
    (2) Completion of necessary ground inspections and tests;
    (3) That the aircraft conforms with the type design; and
    (4) That the Administrator received a flight test report from the 
applicant (signed, in the case of aircraft to be certificated under Part 
25 [New] of this chapter, by the applicant's test pilot) containing the 
results of his tests.
    (b) Upon showing compliance with paragraph (a) of this section, the 
applicant must make all flight tests that the Administrator finds 
necessary--
    (1) To determine compliance with the applicable requirements of this 
subchapter; and
    (2) For aircraft to be certificated under this subchapter, except 
gliders and except airplanes of 6,000 lbs. or less maximum certificated 
weight that are to be certificated under Part 23 of this chapter, to 
determine whether there is reasonable assurance that the aircraft, its 
components, and its equipment are reliable and function properly.
    (c) Each applicant must, if practicable, make the tests prescribed 
in paragraph (b)(2) of this section upon the aircraft that was used to 
show compliance with--
    (1) Paragraph (b)(1) of this section; and
    (2) For rotorcraft, the rotor drive endurance tests prescribed in 
Sec. 27.923 or Sec. 29.923 of this chapter, as applicable.
    (d) Each applicant must show for each flight test (except in a 
glider or a manned free balloon) that adequate provision is made for the 
flight test crew for emergency egress and the use of parachutes.
    (e) Except in gliders and manned free balloons, an applicant must 
discontinue flight tests under this section until he shows that 
corrective action has been taken, whenever--
    (1) The applicant's test pilot is unable or unwilling to make any of 
the required flight tests; or
    (2) Items of noncompliance with requirements are found that may make 
additional test data meaningless or that would make further testing 
unduly hazardous.
    (f) The flight tests prescribed in paragraph (b)(2) of this section 
must include--

[[Page 124]]

    (1) For aircraft incorporating turbine engines of a type not 
previously used in a type certificated aircraft, at least 300 hours of 
operation with a full complement of engines that conform to a type 
certificate; and
    (2) For all other aircraft, at least 150 hours of operation.

[Doc. No. 5085, 29 FR 14564, Oct. 24, 1964, as amended by Amdt. 21-40, 
39 FR 35459, Oct. 1, 1974; Amdt. 21-51, 45 FR 60170, Sept. 11, 1980; 
Amdt. 21-70, 57 FR 41368, Sept. 9, 1992]