OVERVIEW: The Sea Harrier Mk51 belongs to the first generation of the Harrier family, a carrier-based, single-engine, subsonic, V/STOL multirole fighter-interceptor acquired by the Indian Navy in the 1980s. Based on the British Sea Harrier FRS.1, it was designed to provide fleet air defense and strike capability from Indian aircraft carriers.

DETAILS: The Sea Harrier Mk51 was derived from the British Aerospace Sea Harrier FRS.1 and entered Indian Navy service in 1984 for carrier-based operations aboard INS Vikrant. It is powered by a single Rolls-Royce Pegasus Mk 104 vectored-thrust turbofan engine and has a top speed of approximately Mach 0.95. The aircraft features 5 hardpoints 4 under the wings and 1 under the fuselage used to carry air-to-air missiles, gun pods, bombs, and external fuel tanks. Its primary air-to-air weapon was the French Matra R550 Magic missile, and it also employed twin 30 mm ADEN cannon pods and unguided bombs. Avionics included the Ferranti Blue Fox radar and an internal radar warning receiver; the Mk51 was also equipped with chaff and flare dispensers for self-defense. The variant was nearly identical to the FRS.1, with adjustments for Indian Navy operational requirements and logistics.

The designation “Mk51” indicates it as an export model based on the Sea Harrier FRS.1 platform. It retained the same radar, engine, airframe, and multirole configuration as the British version. No beyond-visual-range missile capability or major avionics modernization was included in the Mk51 configuration during the 1980s. Deliveries began in 1983, and full operational capability was achieved by 1984 with the INAS 300 squadron.

TYPE: V/STOL fleet air defense and strike aircraft

FUNCTION: The Sea Harrier Mk51 was primarily used for fleet air defense and maritime interception from Indian aircraft carriers. Its V/STOL capability made it highly suitable for short-deck carrier operations, especially in conditions with limited infrastructure and space.

NOTE:
IOC: Sea Harrier FRS.1 (1979), Sea Harrier Mk51 (1984)
Manufacturer: British Aerospace (UK)
Operators: India
Conflict used in: None in combat role

SOURCE:
Indian Navy official archive ; Jane’s All the World’s Aircraft ; UK National Archives: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ ; Bharat Rakshak: https://www.bharat-rakshak.com/NAVY/aircraft/sea-harrier/ ; Flight International Archives ; AirVectors: http://www.airvectors.net/avharier.html