Blocked breather tube and static leak - Base Leg Aviation Watch in HD on YouTube! Share on Facebook! Vic from Base Leg Aviation discussed two customer issues: 1. Vic diagnoses the cause of oil seeping out of the engine as a blocked breather tube coming off of an Anti-splat air/oil separator-Solution add the Anti-splat recommended bypass valve. 2. Vic finds the cause of an angle of attack warning even though airspeed is reading high. The cause- a hole in the static line.