Established in 1959 when the Royal Ceylon Air Force acquired BAC Jet Provost from the UK to introduce jet aircraft to its fleet, hence it was known as the Jet Squadron.
Based at RCyAF China Bay just after its transfer from the RAF in 1956, its primary role was to train pilots for jet fighters that were planned.
However no jet fighters were acquired by the RCyAF and the Jet Provosts were put into storage by 1970.
The Squadron was reactivated and the Jet Provosts were taken out of storage and in to operational use when the 1971 Insurrection began in 1971.
The Squadron moved to the civil Ratmalana Airport for the remainder of the insurgency, receiving six Mikoyan-Gurevich MiG-17F fighter-bombs and a Mikoyan-Gurevich MiG-15UTI trainer from the USSR.

By the 1980s these aircraft were retired and were not replaced until 1991 when F-5s and F-7s were acquired from People's Republic of China due to the Sri Lankan Civil War.
Thus the  No.
5 "Jet" Squadron was formed in 1991 at SLAF Katunayake.
These were used for ground attack and in 1994 the squadron moved to SLAF China Bay.
With the No.
10 Squadron SLAF became operational in 1996 the F-7s were used for pilot training and carry out combat training missions.
By 2000 they were once again used for ground attack with newer models introduced.
Six Mikoyan MiG-27s and one Mikoyan MiG-23UB trainer were introduced to provide close air support, these were later formed their own squadron; the No.
12 Squadron.
   
In 2008 six F-7Gs were  acquired to be used as interceptors with the squadron taking on the air defence role.
October 2008 the SLAF claimed it first air-to-air kill, when it reported that one of the squadron's F-7G interceptors shot down a Zlín Z 43 of the LTTE air wing when it attempted to attack a military base in Vavuniya.
Established in 1959 when the Royal Ceylon Air Force acquired BAC Jet Provost from the UK to introduce jet aircraft to its fleet, hence it was known as the Jet Squadron. Based at RCyAF China Bay just after its transfer from the RAF in 1956, its primary role was to train pilots for jet fighters that were planned. However no jet fighters were acquired by the RCyAF and the Jet Provosts were put into storage by 1970. The Squadron was reactivated and the Jet Provosts were taken out of storage and in to operational use when the 1971 Insurrection began in 1971. The Squadron moved to the civil Ratmalana Airport for the remainder of the insurgency, receiving six Mikoyan-Gurevich MiG-17F fighter-bombs and a Mikoyan-Gurevich MiG-15UTI trainer from the USSR. 
By the 1980s these aircraft were retired and were not replaced until 1991 when F-5s and F-7s were acquired from People's Republic of China due to the Sri Lankan Civil War. Thus the  No. 5 "Jet" Squadron was formed in 1991 at SLAF Katunayake. These were used for ground attack and in 1994 the squadron moved to SLAF China Bay. With the No. 10 Squadron SLAF became operational in 1996 the F-7s were used for pilot training and carry out combat training missions. By 2000 they were once again used for ground attack with newer models introduced. Six Mikoyan MiG-27s and one Mikoyan MiG-23UB trainer were introduced to provide close air support, these were later formed their own squadron; the No. 12 Squadron.    
In 2008 six F-7Gs were  acquired to be used as interceptors with the squadron taking on the air defence role. October 2008 the SLAF claimed it first air-to-air kill, when it reported that one of the squadron's F-7G interceptors shot down a Zlín Z 43 of the LTTE air wing when it attempted to attack a military base in Vavuniya.
No. 5 Squadron SLAF