The Hal Far Fighter Flight was a British fighter unit formed during the Siege of Malta in 1940. For several weeks, the island of Malta was protected by a small force of Gloster Sea Gladiator biplane fighters, based at RAF Hal Far, which was also known as the Fleet Air Arm station HMS Falcon. The flight is the source of the myth that only three aircraft, named Faith, Hope and Charity formed the fighter cover for the island. In fact, more than three aircraft were operational, though not always at the same time; others were used for spare parts. The names Faith, Hope and Charity were applied to the aircraft many months later, by a Maltese newspaper.
Crates containing 18 Sea Gladiators Mark I (serial numbers N5518 – N5535) from 802 Naval Air Squadron, were left at Malta in early 1940 by HMS Glorious. Three of the airframes (N5532, N5533 and N5534) were later shipped to Britain to take part in the Norwegian campaign and another three were sent to Egypt. In March, although Malta was not facing attack, it was decided that six Gladiators would be assembled to form an air defence unit. The Hal Far Fighter Flight was to include both FAA and Royal Air Force personnel. Five aeroplanes were eventually assembled, including N5525, N5527, N5530 and N5533 but a few days later, they were dismantled again.
In April, it was decided that Malta had a need for fighter protection and although the Gladiators were obsolete, they could hold their own in air combat against Regia Aeronautica bombers. N5519, N5520, N5522 and N5531 were assembled and test-flown. Two of these were to be used for normal operations, one was kept for spares and the other was kept in reserve. (Another source states that the aircraft assembled in April were N5519, N5520, N5523, N5524, N5529 and N5531; N5518, N5521, N5522 and N5525-28 and N5530 were to be the spares.) In May, N5524 and N5529, were assembled and other crated aircraft were to be used as spares. On 11 June 1940, when the air battle for Malta began, the air defence consisted of four Gladiator aircraft, two of which maintained a continuous stand-by during daylight hours. N5520, better known as Faith, was fitted with an engine salvaged from a Bristol Blenheim bomber, which also used the Bristol Mercury engine and a Blenheim three-blade Hamilton propeller, rather than the standard two-blade propeller.