The aircraft in question is GGDFL B737-3 fitted with winglets.Strange how Jet2 have been operating B737 at BFS for a good number of years.Is there an underlying problem with this type of machine with winglets? As for the Royal Mail operation , this will be operated by Atlantic Airlines with 1 ATP and 1 ATR.If im not mistaken many years ago when British Midland moved to BHD the A321 suffered much damage due stones and increased reversed thrust.