what's this hose?

[GasDoc]

Hello. I'm not sure what this hose is for or whether it should be connected to something. Hose is pictured to left of the expansion tank and sitting on top of radiator. Much appreciated.
Rob

[ClassiChimi]

Looks like the pipe that goes to the carbon canister at the end of that pipe situated inside the wing,
Fuel tank venting system. You should find the remaining pipe cable tied to the left lower chassis rail and running back to tank.
I might be wrong so wait on a few other answers first

[J400GED]

It looks like the vent hose from the carbon canister which is not connected to anything but, on mine, it sits between the radiator and the body, pointing downwards.

[GasDoc]

J400GED said:

It looks like the vent hose from the carbon canister which is not connected to anything but, on mine, it sits between the radiator and the body, pointing downwards.

That's exactly where mine was when I noticed it. Thanks both for the replies.