It would be nice if someone had a GIV systems manual,
I do...
apparently with either nutcracker #3 relay energized as long as in ground mode..
We are only looking at reasons why the TR's are stowed, as the undercarriage came off the aircraft, we can assume that the nutcracker isn't working, therefore as per the AOM 2A-23-00
On the ground with Nutcracker failed in the air mode- Thrust reversers will stow at low speed
- Ground spoilers will deploy with wheel spin up but will stow at low speed
- Anti skid may not operate.
- All braking may be inoperative at low speed unless anti skid is selected off
- Engine idle set to 67% HP at low ground speed
IF we look at page 2A-78-00, it states
Either nutcracker #3 relay energised (On ground configuration) or TR wheel speed relay energised (wheel speed above 65 MPH)
So as you slow down and lose the wheel speed, you do not satisfy the requirements for TR deployment with the nutcracker in air mode and the TR's will stow. This is also the way that FSI are teaching the subject of landing with the nutcracker inoperative.