Trigger is only way from topside to cave. When elevator reaches cave, Elevator stays for a few seconds then returns to the top. This means you must call the elevator back to the cave again to return topside.
to = take off land = lands helicopter in original position flyf - flys helicopter directly forward. fly = flies helicopter in circular pattern one time. sr = helicopter strafes right sl = helicopter strafes left fire = fires gun, mounted on underside of helicopter cab. mis = missiles firing