B170 with rudder lock in place flies off from Whenuapai

[xbaggy]

Interesting comments. I remember rigging the control system on Freighters at least twice after Check 12 servicings (Major overhauls} and the only difference to normal flight control system was the trim tabs were a spring tab system.
Otherwise the system was a normal cable, pushrod and bellcrank system.
At Woodbourne the complete A/C could not fit into the hangar so the rear end sat outside with a cutout fitted in the space when the hangar doors were closed either side of the fuselage.
This meant that the external control locks were fitted.
I spent many hour working in a Freighter cockpit and am pretty sure that the controls were not full and free with the locks fitted but a small amount of movement occurred which operated the spring loaded trim tabs.
If I remember correctly the control column operated the trim tabs which in turn aerodynamically moved the control surface.
Help Me Shorty, Marty, Al or any of you B170 specialists.

[shorty]

Pretty sure that attempting take off with control locks in led to C-47 NZ3529 swerving off the runway at Pallikalu on 6-7-45 and being written off amongst the shrubbery

[tbf25o4]

You correct shorty that's exactly what the pilot had to explain to the Court of Inquiry!

[rone]

Strange that, the discussion went from it was unlikely because it was not possible, to yes it did, on more than one occasion also.

[Dave Homewood]

Welcome to the internet Ron.