Chevron, The Beverley was purchased to support the L1011 in the event of an engine failure overseas. Of course Europe wasn't too much of a problem with a two engine ferry but the Caribbean would have been a bit of a challenge !! The problem with the Beverley was the ARB certification, even in a Restricted catagory .Despite the fact that these had been flying over our heads for years they were suddenly unsafe !!!
The problem was was the ARB required additional data from the manufacturers who of course could see no return on this expense !!