mar, sounds like you do or have flown for NAC. It was my understanding that only two swing-tail DC6s were made. Got to fly both for TAL out of YIP. There are push rods, but the flight controls have to be a specific position so that they may be released and then reconnected. Also the tail is hinged on the right side and operated via hydraulics. Over all works fine. There are a series of micro switches to control the funtions.
There are two lights on the Captain's panel. A red one and an Amber one. The amber signifies that the flight controls are not in the proper position. And the red one tells you the tail is not locked. If you want something to wake you up in the middle of the night, have that red light come on. Engine fires, NO SWEAT. RED LIGHT! OH $HIT!!!