According to page 97 of todays Railway Magazine 66734 could be left reclining on the lochside for months.
It's owner Porterbrook and the insurers can't decide what to do with it.
It's been covered in a tarpaulin and fitted with motion sensors in case it decides to go for a swim.
I thought you were going to say in case someone tries to steal it for scrap
Doubt even they could get to it in that remote position
The cost of getting heavy plant up there, which would have to be by rail and building any sort of stable platform to winch off and then lift would probably run to well over the price of a new loco before any repair costs
It will have to wait i think till 2048 when the new class 66 preservation group attempt a recovery in time for for Railfest York 2050
Unless the army plan to send their new secret 140 ton heavy lift chopper in for training