page_title: British Aerospace 125
section_title: Variants
hierarchical_section_title: British Aerospace 125 / Variants
context_page_description: The British Aerospace 125 is a twinjet mid-size business jet. Originally developed by de Havilland and initially designated as the DH125 Jet Dragon, it entered production as the Hawker Siddeley HS.125, which was the designation used until 1977. Later on, more recent variants of the type were marketed as the Hawker 800.
  The type proved quite popular overseas; more than 60% of the total sales for the aircraft were to North American customers. It was also used by the Royal Air Force as a navigation trainer, as the Hawker Siddeley Dominie T1, and was operated by the United States Air Force as a calibration aircraft, under the designation C-29.
context_section_description: Series 1
  First version, powered by 3,000 lbf (13 kN) Viper 20 or 520 engines. Nine built, including two prototypes (43 ft 6 in (13.26 m) long, 44 ft (13.41 m) span) and seven production aircraft 47 ft 5 in (14.56 m) long, 47 ft (14.33 m) long.
  Series 1A/1B – upgraded Bristol Siddeley Viper 521 or 522 engines with 3,100 lbf (14 kN) of thrust each, and five cabin windows instead of six. Series 1A for US FAA certification (62 built), Series 1B for sale elsewhere (13 built).
  Series 1A-522 and 1B-522 – Series 1A/B aircraft with Viper 522 engines.
  Series 1A-R522 and 1B-R522 – Series 1A-522 and 1B-522 aircraft with long-range fuel tanks, modified flaps and main landing gear doors.
  Series 1A-S522 and 1B-S522 – Some aircraft were structural modified to Series 3 standard but without a change in maximum landing weight or maximum operating altitude.
  Series 2
  Navigation trainer for Royal Air Force (20 built), with service designation Dominie T.1 – (Rolls-Royce Viper 301)
  Series 3
  Series 3A/B – Viper 522-powered variant with increased weights.
  Series 3A/R and 3B/R – early aircraft modified to the series 3 standard but without a change in maximum landing weight or maximum operating altitude and increased fuel capacity with addt'l 135 US gal in a ventral tank.
  Series 3A/RA and 3B/RA – Series 1A/B aircraft modified to Series 3 standard with structural changes for increased maximum zero fuel weight, maximum rampweight and addt'l 135 US gal ventral fuel tank.
  Series 3B/RB – variant of the 3B/RA with increased maximum ramp weight and maximum takeoff weight.
  Series 3B/RC – variant of the 3B/RA modified as a navigation aid checker with four-seat cabin configuration and addition of avionic and flight inspection equipment.
  F3B – re-engined
  F3B/RA – re-engined
  Series 400
  Series 400A and 400B – increased maximum ramp and brake-release weights and addition of a outward-opening main entry door. From 1970 the Series 400A aircraft for the United States were marketed as the Beechcraft Hawker BH.125 Series 400A.
  Series 401B – Increased maximum take off and zero fuel weights and alteration to cabin loading.
  Series 403A(C) – The same as a 403B but for use in Canada.
  Series 403B – Increased maximum take off, zero fuel and ramp weights, alteration to cabin loading.
  HS.125 CC1 – British military designation for a series 400 liaison aircraft for the Royal Air Force
  Series 600
  Series 600A and 600B – Change to Viper 601-22 engines, increased weights and operating speeds, 3 ft 1 in (0.94 m) fuselage stretch to increase capacity to 14 passengers, increased fuel capacity including an additional tank in the dorsal fairing, revised aileron tab arrangements and aileron control gearing and improved aerodynamics. from 1976 the Series 600A aircraft were marketed as the Beechcraft Hawker BH.125 Series 600A.
  Series 600B/1
  Series 600B/2
  Series 600B/3
  Series F600B – re-engined
  HS.125 CC2 – British military designation for series 600 liaison aircraft for the Royal Air Force
  Series 700
  Series 700A and 700B variants had the Honeywell TFE731-3RH turbofan engines with 3,720 lbf (16.5 kN) of thrust each, first flight 19 June 1976. All early models could also be re-engined.
  BAe 125 CC3 – British military designation for Series 700 liaison aircraft for the Royal Air Force
  HS.125 Protector – Series 700-based maritime patrol aircraft with a search radar and cameras
  Series 800
  BAe 125 800 – increased wingspan, streamlined nose, tailfin extension, increased fuel capacity, first corporate jet to feature an EFIS cockpit, upgraded engines, first flight 26 May 1983.
  Hawker 800 – Final variant of the BAe 125 800 series. Produced under the "Corporate Aircraft" moniker before being replaced by the Hawker 800XP.
  Hawker 800XP – variant with TFE731-5BR1H turbofan engines with 4,660 lbf (20.7 kN) of thrust each
  Hawker 800SP and 800XP2 – The designation for Hawker 800 and Hawker 800XP aircraft fitted with Aviation Partners Inc. (API) winglets.
  Hawker 850XP – 800XP with factory installed winglets and interior updates
  Hawker 900XP – 850XP with Honeywell TFE731-50R turbofan engines for increased hot
caption: Raytheon Hawker 800 at Cardiff Airport, Glamorgan, Wales, 2004
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