 Of the 21 @,@ 000 civil aircraft registered in the UK , 96 per cent are engaged in GA operations , and annually the GA fleet accounts for between 1 @.@ 25 and 1 @.@ 35 million hours flown . The single most common class of aircraft is the fixed @-@ wing light aircraft associated with traditional GA , but the main area of growth over the last 20 years has been in the use of more affordable aircraft , such as microlights , amateur built aeroplanes , and smaller helicopters . There are 28 @,@ 000 Private Pilot Licence holders , and 10 @,@ 000 certified glider pilots . Some of the 19 @,@ 000 pilots who hold professional licences are also engaged in GA activities . Although GA operates from more than 1 @,@ 800 aerodromes and landing sites , ranging in size from large regional airports to farm strips , over 80 per cent of GA activity is conducted at 134 of the larger aerodromes . The GA industry , which is around 7 per cent the size of its CAT cousin , employs 12 @,@ 000 people , and contributes £ 1 @.@ 4 billion to the UK economy . 
 Of the 21 @,@ 000 civil aircraft registered in the UK , 96 per cent are engaged in GA operations , and annually the GA fleet <a href='uninflect' title='1'><mark>accounts</mark></a> for between 1 @.@ 25 and 1 @.@ 35 million hours flown . The single most common class of aircraft <a href='drop_aux' title='2'><mark>is</mark></a>the fixed @-@ wing light aircraft associated with traditional GA , but the main area of growth over the last 20 years <a href='uninflect' title='3'><mark>has</mark></a> been in the use of more affordable aircraft , such as microlights , amateur built aeroplanes , and smaller helicopters . <a href='dey_it' title='4'><mark>There</mark></a> are 28 @,@ 000 Private Pilot Licence holders , and 10 @,@ 000 certified glider pilots . Some of the 19 @,@ 000 pilots <a href='null_relcl' title='5'><mark>who</mark></a>hold professional licences <a href='drop_aux' title='6'><mark>are</mark></a>also engaged in GA activities . Although GA <a href='uninflect' title='7'><mark>operates</mark></a> from more than 1 @,@ 800 aerodromes and landing sites , ranging in size from large regional airports to farm strips , over 80 per cent of GA activity is conducted at 134 of the larger aerodromes . The GA industry , which <a href='drop_aux' title='8'><mark>is</mark></a>around 7 per cent the size of its CAT cousin , <a href='uninflect' title='9'><mark>employs</mark></a> 12 @,@ 000 people , and <a href='uninflect' title='10'><mark>contributes</mark></a> £ 1 @.@ 4 billion to the UK economy . 
Of da 21 @,@ 000 civil aircraft registered in the UK , 96 per cent are engaged in GA operations , and annually tdaGA fleet account fir between 1 @.@ 25 and 1 @.@ 35 million hours flown . The single most common class of aircraft the fixed @-@ wing light aircraft associated with traditional GA , but the main area of growth ova thdaast 20 yrs have been in the use of more affordable aircraft , such as microlights , amateur built aeroplanes , and smaller helicopters . It is 28 @,@ 000 Private Pilot Licence holders , and 10 @,@ 000 certified glider pilots . Some of the 19 @,@ 000 pilots hold professional licences also engaged in GA activities . Although GA operate from more than 1 @,@ 800 aerodromes and landing sites , ranging in size from large regional airports to farm strips , oova80 per cent of GA activity is conducted at 134 of the larger aerodromes . The GA industry , which around 7 per cent thedaze of its CAT cousin , employ 12 @,@ 000 pple , and contribute £ 1 @.@ 4 billion to the daeconomy .