CS 22.1017  Oil lines and fittings

CAA ORS9 Decision No. 1

(a) Oil lines must comply with CS 22.993 and each oil line and fitting must be made of fireproof material. 

(b) Breather lines. Breather lines must be arranged so that: 

(1) condensed water vapour or oil that might freeze and obstruct the line cannot accumulate at any point; 

(2) the breather discharge will not constitute a fire hazard if foaming occurs or cause emitted oil to strike the pilot’s wind shields; 

(3) the breather does not discharge into the engine air induction system; 

(4) if the engine is retractable, there must be no discharge of oil from the breather line when the engine is completely retracted.