Arbitrator CZ

That solved it, thanks! I completely forgot about Mechjeb since I'm trying to fly some crazy spaceplane orbital tanker which requires manual control to somewhat control it and left that "Manage air intakes" setting on, when was using jet engines as boosters for rockets.

Hi, I run into a problem using SABRE M engines. When I activate the engine, all SABRE Intakes close itself and cannot be reopened. I don't know if it is my fault or if it is a bug, but if it is my fault and somebody else experienced the same problem and found solution, please let me know. Thanks!