British Midland operated one of these - G-BFZL - for many years. I read in a book that it was a bit different to other series 810 Viscounts, the words "modernised" and "stretched" were used. There were at least two other aircraft on the British register that I believe may have been similar, operated by Fields/Dan-Air in he late seventies, registrations G-BGLC and G-BCZR.
Does any one know if these aircraft were significantly different to regular series 810s or were they just customised to a degree by their original owners ?
Thankyou
