Originally Posted by
mike734
Can you elaborate on this device?
Its been awhile but I will try and draw on my old 737 knowledge. There is a small tube looking device that is right below the gear well. If it gets cut for any reason it is supposed to relieve hydraulic pressure I believe and cause the gear to extend. In theory, a shredded tire would strike this device and cut it off. The gear would then extend back down. This would prevent a shredded tire from affecting gear status while retracted or prevent shredded tire fragments from coming in contact with a hot brake. You had to make sure this was intact on every walk around. Kind of an ingenious device. However, any current 737 pilot may have a better explanation than me.