<P> The Hawker Siddeley Harrier is the first generation - version and is also known as the AV - 8A Harrier ; it was used by multiple air forces , including the Royal Air Force ( RAF ) and the United States Marine Corps ( USMC ) . The Sea Harrier is a naval strike / air defence fighter derived from the Hawker Siddeley Harrier ; it was operated by both the Royal Navy and the Indian Navy . During the 1980s , a second generation Harrier emerged ; manufactured in the United States as the AV - 8B and in Britain as the British Aerospace Harrier II respectively . By the start of the 21st century , the majority of the first generation Harriers had been withdrawn , many operators having chosen to procure the second generation as a replacement . In the long term , several operators have announced their intention to supplement or replace their Harrier fleets with the STOVL variant of the F - 35 Lightning II , designated as the F - 35B . </P>
<P> The Hawker Siddeley Harrier is the first generation - version and is also known as the AV - 8A Harrier ; it was used by multiple air forces , including the Royal Air Force ( RAF ) and the United States Marine Corps ( USMC ) . The Sea Harrier is a naval strike / air defence fighter derived from the Hawker Siddeley Harrier ; it was operated by both the Royal Navy and the Indian Navy . During the 1980s , a second generation Harrier emerged ; manufactured in the United States as the AV - 8B and in Britain as the British Aerospace Harrier II respectively . By the start of the 21st century , the majority of the first generation Harriers had been withdrawn , many operators having chosen to procure the second generation as a replacement . In the long term , several operators have announced their intention to supplement or replace their Harrier fleets with the STOVL variant of the F - 35 Lightning II , designated as the F - 35B . </P>
when did the harrier go out of service
when did the harrier go out of service
By the start of the 21st century
By the start of the 21st century