Aircraft Codes
Going to Liverpool the other day we noticed in the airfield Notams that part of a taxiway was only suitable for up to Code (not Cat) C aircraft. This was explained in the Notam as B737/A320 size. My compatriot and I looked at each other and realised that neither of us knew the code for the B757 or 767. We looked in fairly obvious documents to research but to no avail.
Any clues please would be appreciated.