Losing the brakes in a B-17 is a helpless feeling. You can’t even retract the landing gear to stop because there is no override for the squat switch that prevents inadvertently retracting the gear with weight on the wheels.
I had the brake line rupture at the top of the left landing gear strut during a landing at Porterville in 1982. When my copilot who was making the landing hollered No Brakes I ran the electric hydraulic pump and regained brake pressure for a short while until the remaining fluid went overboard. However, that allowed me to slow enough to make a controlled ground loop onto the taxiway and then get lined up on the centerline and lock the tail wheel.
I shut down the engines. Again, the helpless feeling with zero control as at the walking speed we were rolling full rudder and aileron made zero difference and there is enough play in the tail wheel lock to allow the airplane to drift from the centerline. I had to quickly restart a couple of engines and regroup. Finally, my copilot Jerry Glenn found a wheel chock and got down inside the nose entry door and tossed the chock down against the left main wheel and we finally stopped.
I worried about how to stop the airplane every time we taxied into a crowded or tricky area for the rest of the Fire Season in case we lost the brakes again. I tried to talk the maintenance guys into installing a guarded override switch in the cockpit for the squat switch in case we lost the brakes again, but that never happened.
Tanker 65 at Porterville in 1982
13795BC9-46A8-4912-9736-EEB72F594BCC by
tanker622001, on Flickr
Another picture of Tanker 65 at Fresno in 1980
13CFFCE1-5C82-4146-98F5-4CE9C07CB0C6 by
tanker622001, on Flickr
The view that Jerry Glenn had when he heaved the chock against the left main wheel to finally stop T65 from rolling
353AC628-A2DE-4E92-ABA3-B8B18DA303BA by
tanker622001, on Flickr