B206 door diagram
Helipan: You'll need to be more specific. The early JetRangers had 'non-slamable' doors that, from the inside, had to be held in the closed position while twisting the handle to lock them. Later JetRangers (sorry, I can't remember the S/N break) had 'slamable' doors that, again from the inside, could be pulled (slammed) closed and then push down on the lock/unlock lever to lock.
For both types of doors DO NOT allow people to slam them with the handle/lever in the locked position