It depends on the model. I'd have to look up to confirm but I think E and early F had a different Radio seat.
There were armor plates on the flight deck seats but those weren't attached to the seat itself.
There was a period where Radio seat had an armor plate as well.
Not sure what would have been stenciled after, but there should be another A in front: "A.A.F."
Depending on model of B-17 this same seat was used for Radio Operator so you have at least three possibilities of installation.
Right, bomb hooks don't have an opening at the bottom. I can see there are rods to control opening/closing on the outer bolts of the hooks. The top rod in the third pic is broken a the bolt hole, but that doesn't give me a clear indication what this was for.
That does not look like it's from a B-17.
Part number is also not correct for B-17. Should be in format x-xxxx or xx-xxxxx unless it's a vendor produced component, which you'd need to know the vendor to look up. But this looks like structure so that shouldn't apply.
It's worth noting that not every B-17 carried a Norden. Lead aircraft did. Part of the C-1 Autopilot and Bomb Release systems, the tail section had two lights. I think one indicated aircraft was beginning its bomb run, the other indicated, "we dropped, everyone else drop."
I'm looking for information on H2X (AN/APS-15) RADAR systems. Specifically on the "Mickey" set installed on B-17s:
Illustrated Parts Manual
Operations/Procedures
I have a copy of ROBIF but that's more of a general manual. Photos of the Mickey, interior fuselage views would be nice as well...
Q: What kind of device did he use to release the bombs?
A: The Norden Bomb Sight had an option to automatically activate the bomb racks to release. Additionally there was a manual switch at the Bombardier's station.
Q: In the aircraft, who said "bombs away " ?
A: Bombardier as he was in front...
If this was in a field near an aerodrome it's possible the airframe did a gear up belly landing. In which case the ball turret, if it weren't ejected, would be the first to impact. If crew were able to eject the turret I imagine the impact from that drop would still be significant. Plus add 80...