[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: 14CFR33.39]



[Page 773]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

 

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

 

    Subpart C_Design and Construction; Reciprocating Aircraft Engines

 

Sec. 33.39  Lubrication system.



    (a) The lubrication system of the engine must be designed and 

constructed so that it will function properly in all flight attitudes 

and atmospheric conditions in which the airplane is expected to operate. 

In wet sump engines, this requirement must be met when only one-half of 

the maximum lubricant supply is in the engine.

    (b) The lubrication system of the engine must be designed and 

constructed to allow installing a means of cooling the lubricant.

    (c) The crankcase must be vented to the atmosphere to preclude 

leakage of oil from excessive pressure in the crankcase.