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Mosquito FB


De Havilland

Mosquito FB

De Havilland Mosquito FB Mk VI: Day and night fighter-bomber/intruder, armed with four machine guns and four cannon as F Mk II, plus two 250-lb (113-kg) bombs in rear of bomb-bay and one 250-lb (113-kg) under each wing; (increased to 5.00-lb/227-kg bombs in Srs 2 aircraft); alter-native wing loads included SCI, mine, depth charge, four 60-lb (27-kg) rockets each side or 50- or 100-Imp gal (227- or 455-1) drop tank. Prototype first flew June 1, 1942; total of 2,305 built. Merlin 21, 23 or 25, and some aircraft with AI Mk IV, V or XV radar. First deliveries to No 418 Squadron May 1943. Nine Mk VI aircraft (plus one Mk IV and three Mk III) modified for use by BOAC, in civil markings, on courier service between Scotland and Sweden, making 520 round trips between February 1943 and May 1945. Thirty-eight supplied to RAAF.

De Havilland Mosquito FB Mk X: Proposed fighter-bomber, similar to FB Mk VI with Merlin 101 engines. Not built.

De Havilland Mosquito FB Mk XI: Proposed fighter-bomber, similar to FB Mk VI with Merlin 61 engines. Not built.

De Havilland Mosquito FB Mk XVIII: As FB Mk VI with 57-mm, 6-lb (2.7-kg) Molins gun in fuselage replacing four 20-mm cannon; also armed with four 0.303-in (7.7-m) machine guns and two 500-lb (227-kg) bombs or eight 60-lb (27-kg) RPs under wings. Total of 27 converted from FB Mk Vis; first flown June 8, 1943; initial operations October 24, 1943, with No 248 Sqn, Coastal Command. Sometimes referred to as the 'Tse-tse'.

De Havilland Mosquito FB Mk 21: Canadian production equivalent of FB Mk VI, built in 1943. Two with Merlin 31s and one with Merlins 33s.

De Havilland Mosquito FB Mk 24: Similar to FB Mk 21 with Packard Merlin 301 engines. Two commenced 1943, only one com-pleted, cancelled before flight February 1944.

De Havilland Mosquito FB Mk 26: Similar to FB Mk 21 with Packard Merlin 225 engines. Production totalled 337, October 1944 onwards; 197 to RCAF, balance to RAF, used principally in Middle East.

De Havilland Mosquito FB Mk 40: Australian production version, by de Havilland at Bankstown, Sydney, based on FB Mk VI. Prototype converted from British-built Mk II with Packard Merlin 31s and flown on July 23, 1943. Production totalled 100 with Merlin 31s and 112 with Merlin 33s and paddle-blade propellers, first flown July, 23, 1943, and deliveries to RAAF commencing March 4, 1944, and continuing post-war. Service with No 1 Sqn against Japanese targets, and with Nos 87 and 94 Sqns.

De Havilland Mosquito FB Mk 42: One FB Mk 40 converted with Merlin 69 engines.

De Havilland Mosquito
B. MK. IV B. Mk. IX B. Mk. XVI NF. Mk. XIX
Crew 2
Length, m 12.22 12.65 12.65 12.34
Wing span, m 16.52
Wing area, m2 40.9
Weight, kg:
Empty weight 6000 6300 6700 6622
Loaded weight 9866 10422 11766 10260
2 X PE Rolls-Royce Merlin 21 72 76 25
Power, hp 2x1280 12x1680 2x1710 2x1635
Speed, km/h maximum 612 657 668 608
at altitude, m 4300 7900 8500  
Service ceiling, m 8300 10300 12000 8535
Bomb load, kg internal 908 908 1362  
external - 454 454  


  • "Encyclopedia of military engineering" /Aerospace Publising/
  • "British warplanes of World War II" /under cor. Daniel March/
  • THE REICH INTRUDERS. Dramatic RAF medium bomber raids over Europe in World War 2. /MARTIN W BOWMAN/