CS 22.1839  Lubrication system (four-stroke engines only)

CAA ORS9 Decision No. 1

(a) The lubrication system of the engine must be designed and constructed so that it will function properly in all attitudes and atmospheric conditions in which the powered sailplane is expected to operate. In wet-sump engines this requirement must be met when the engine contains only the minimum oil quantity, the minimum quantity being not more than half the maximum quantity. 

(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 preclude leakage of oil from excessive pressure in the crankcase.