[Code of Federal Regulations]

[Title 14, Volume 1]

[Revised as of January 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 14CFR33.57]



[Page 777-778]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

 

PART 33_AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES--Table of Contents

 

          Subpart D_Block Tests; Reciprocating Aircraft Engines

 

Sec. 33.57  General conduct of block tests.



    (a) The applicant may, in conducting the block tests, use separate 

engines of identical design and construction in the vibration, 

calibration, detonation, endurance, and operation tests, except that, if 

a separate engine is used for the endurance test it must be subjected to 

a calibration check before starting the endurance test.

    (b) The applicant may service and make minor repairs to the engine 

during the block tests in accordance with



[[Page 778]]



the service and maintenance instructions submitted in compliance with 

Sec. 33.4. If the frequency of the service is excessive, or the number 

of stops due to engine malfunction is excessive, or a major repair, or 

replacement of a part is found necessary during the block tests or as 

the result of findings from the teardown inspection, the engine or its 

parts may be subjected to any additional test the Administrator finds 

necessary.

    (c) Each applicant must furnish all testing facilities, including 

equipment and competent personnel, to conduct the block tests.



[Doc. No. 3025, 29 FR 7453, June 10, 1964, as amended by Amdt. 33-6, 39 

FR 35466, Oct. 1, 1974; Amdt. 33-9, 45 FR 60181, Sept. 11, 1980]