Our company plane can be flown by single pilot without the need of a copilot. Several times while flying in the company plane our pilot allowed one of our company owner's family members take off and land the plane while a number of employees were on board. Both in take off and landing the plane got violently out of control jerking back and forth to the point that everyone on board was in danger. Our pilot took back over control of the aircraft barely averting disaster. Several of us that have been on those terrifying rides have made it a point not to fly if he is going with.
Is it legal for our pilot to let him do this with us on board? In the USA