IF Dibbo descended into what he thought would be warmer air ( we know he was cleared down from 5000 ft) - We know he disappeared from radar at 2300 ft _ how do we know he didnt continue on track for many miles ( perhaps hitting the water at low level and a shallow angle with no horizon for a VFR pilot to follow / see) and the aircraft is MUCH nearer the mainland coast ?
Given its very odd that we have no radar traces - I thought CI radar could " see" us on SVR clearances " not above 1500 ft ".............