Britten-Norman Defender

BN-2T-4S Defender 4000 of 5 Regiment Army Air Corps in 2013

BN-2T-4S Defender 4000 of the Greater Manchester Police

The BN-2T-4S Defender 4000 is an enhanced version of the BN-2T Defender intended for the aerial surveillance role. Compared to earlier Defenders, it has a stretched fuselage, the enlarged wing from the Trislander, a new nose structure capable of accommodating an EO/IR sensor and radar, and an increased payload.[2] The prototype Defender 4000 first flew in 1995 and entered production from 1997.[3]

The FBI deployed one Defender for electronic aerial surveillance on the Branch Davidians' compound during the siege of Waco in 1993.[4]

In August 2017, in an attempt to calm a gang war in Copenhagen, the Danish police force used at least one of the Danish National Guard's two Defenders to fly reconnaissance missions over the city.[5]

The Mauritanian Air Force employed six BN-2A-21 Defenders in the Western Sahara War against POLISARIO forces in 1976, losing two of them in action.[6]

A Rhodesian Air Force Alouette III, configured as a gunship or 'K-Car' (20mm cannon), shot down a Botswana Defence Force Air Wing Islander on 9 August 1979.[7]

In 1996, the Royal Cambodian Air Force deployed its three BN-2 Defenders in support of the dry season offensive against Khmer Rouge insurgents. The Defenders were armed with machine guns and rockets, and even dropped mortar rounds. One Defender was lost during the operation.[8]

In 2014 the Philippine Navy sent one of its Defenders to assist a multinational search and rescue party led by the government of Malaysia in search of the missing Malaysia Airlines Flight 370.[9]

In January 2004, the British Army placed an urgent order for four BN-2T-4S Defender 4000 aircraft designated the AL Mk 1 for ISTAR missions in Iraq.[10] The Defender was to be configured similar to the Army Islander AL Mk 1 and Defenders in use with Hampshire Constabulary and Greater Manchester Police.[10] In October 2004, the first aircraft was delivered to No. 1 Flight AAC and deployed to Iraq that month.[10] The final Mk 1 was delivered in September 2006 to No. 651 Squadron AAC which had been reformed to operate the Defender.[10] The Mk 1 was fitted with a Wescam MX-15 Electro-Optical Infrared (EO/IR) turret under the nose, cabin-mounted cameras, COMINT and C2 equipment.[11][12][10] During the fleet's bi-annual return to the UK for in-depth servicing new ISTAR equipment was fitted.[10]

A second order was placed for four fully re-designed aircraft designated the Mk 2 and a trainer.[10] In September 2008, the first Mk 2 aircraft and also one Mk 1 upgraded to Mk 2 standard were delivered.[10] The Mk 2 was fitted with TCAS, EGPWS, improved DAS, improved avionics suite and had ISTAR equipment enhancements.[10] The Mk 2 had a longer endurance to the Mk 1 being able to carry more fuel and was also able to operate at a lower height.[10] The training variant was also delivered in September 2008 designated the T Mk 3.[10] The final Mk 2 aircraft was to be delivered by 2012 together with the three Mk 1s upgraded to Mk 2 standard.[10]

In June 2009, the Defender's deployment to Iraq ended with 651 Squadron serving continuously since October 2004 in which time it had provided over 8,000 hours in support of UK Forces.[10] In January to February 2010, the Defender was trialled in the Middle East with a Counter-IED capability for potential use in Afghanistan.[10] Defenders deployed to Afghanistan from November 2010 through to 2012.[10][13] In 2012, Defenders flew daily missions prior to and during the London 2012 Summer Olympics.[13]

In April 2019, the Defender was transferred from the Army to the Royal Air Force with No. 1 Group.[14][15] The aircraft was re-designated from AL2 (prefix AL for Army liaison) to R2 (prefix R for Reconnaissance).[16][17][18]

In July 2021, it was reported that the Defender was retired from service on 30 June 2021 and that Britten-Norman had acquired the fleet and working with the Defence Equipment Sales Authority will convert the aircraft for civilian sale.[19][20][21]