Alderney has similar sort of problems - 880m runway and 35 year old Trislanders, which some say are coming to the end of their lives. SU80s, AN28s, LET 410s. Dornier 228s (all if eventually UK certified - or do it manx2 style) are the only options to replace them, but or Alderney either more Islanders or new Trislanders are the only aircraft that can replace Trislanders.