In this task, you will be given a passage to read. A fill in the blank question will be given to you.  Your answer should fit the blank appropriately.
Q:  Regional airports , such as Edinburgh Airport , have experienced strong growth in CAT operations in recent years . These operations are commercially and operationally incompatible with GA , and although there is no evidence of deliberate discrimination , the effect has been to discourage or exclude it . GA aircraft are being subject to significant increases in charges , including the imposition of handling fees in some cases . Some airports restrict or deny GA parking , and others limit or refuse certain GA activity . As a result , light GA aircraft are now rarely or never seen at large , busy international airports such as Heathrow , Stansted , Gatwick and Manchester . In addition to this de facto loss of facilities , the number of aerodromes in the UK has been in decline over the last 50 years , as a result of increasing urbanisation and the closure of airfields built during WWII . Alternative and more profitable uses for land can also lead to existing aerodromes being threatened with closure , for example North Weald , or actually being closed , as happened to Ipswich Airport. and Bristol Filton Airport . Referring to the importance of a functioning national network of GA airfields  , especially where GA performs an air transport role , the CAA states that  there could be cause for concern if a significant further loss of airfields were to continue , especially if crucial nodes on the transport network were to be lost .  fill in the blank  : Regional airports , such as Edinburgh Airport , have experienced strong growth in CAT __________________ in recent years . 
A: 
 operations 