The British Aerospace 125 is a twin-engine, mid-size business jet. Initially conceptualised by de Havilland as the DH.125 Jet Dragon, it entered manufacturing under the name Hawker Siddeley HS.125, a designation retained until Hawker Siddeley merged into British Aerospace in 1977. Subsequent models were marketed under the names Hawker 800 and Hawker 1000.
Over 60% of the aircraft’s sales were to customers in North America. It also served in military roles, including as a navigation trainer for the Royal Air Force under the name Hawker Siddeley Dominie T1, and was operated by the United States Air Force as a calibration platform designated C-29.
In 1961, de Havilland initiated development of a compact business jet called the DH.125 Jet Dragon, intended to succeed the piston-engined de Havilland Dove, which had been a successful light transport and business aircraft. Before embarking on this project, de Havilland established several key performance targets for the new jet, including a minimum range of 1,000 miles (1,600 km), competitive speed and operating costs relative to turboprop rivals, and an engineering approach prioritising dependability and conventional design principles. The resulting concept featured twin engines mounted on the rear fuselage, powered by Bristol Siddeley Viper turbojets.
The first prototype took to the skies on 13 August 1962, followed by a second prototype on 12 December that same year. The latter was more aerodynamically refined and equipped with additional systems compared to the first. Production models incorporated various enhancements derived from these prototypes, such as an extended fuselage and increased wingspan. The initial production-standard aircraft completed its maiden flight on 12 February 1963, with the first customer delivery occurring on 10 September 1964.
Throughout its operational history, the aircraft underwent numerous changes in designation. Although Hawker Siddeley had acquired de Havilland a year prior to the project's initiation, the development phase retained the legacy brand and "DH" prefix. Once full-scale production commenced, the model was rebranded as the HS.125, with the exception of American exports that continued to use DH.125 until the designation evolved to BH.125 under Beechcraft-Hawker. Following the 1977 merger of Hawker Siddeley Aircraft with the British Aircraft Corporation, resulting in British Aerospace, the aircraft adopted the name BAe 125. When British Aerospace divested its business jets division to Raytheon in 1993, the primary variant of the jet became commonly known as the Hawker 1000.
Initial prototypes were constructed at de Havilland's Hatfield facility; however, all subsequent production aircraft were assembled at the Broughton plant near Chester up until the 1990s. By the early 2000s, assembly and partial outfitting of the fuselage, wings, and tailfin continued at Broughton, now under Airbus UK ownership and management. Additional sub-assemblies were manufactured at Airbus UK's nearby Buckley site in Flintshire. From 1996 forward, these components were transported to Wichita, Kansas in the United States for final assembly. In a 1993 article, Flying Magazine described the type as "numerically the most successful British commercial aircraft ever produced, and holding the record as the world's longest continuously produced business jet."
Production ceased suddenly in 2013 due to the bankruptcy of owner Hawker Beechcraft, a consequence of diminished business jet demand following the late-2000s Great Recession. At that point, manufacturing had continued for over five decades with more than 1,600 units completed. In April 2013, responsibility for the type certificate and ongoing support for all produced 125 models transferred to the reestablished Beechcraft Corporation. As of October 2012, Beechcraft had no plans to resume production of its business jets; instead, it aimed to either sell or dismantle existing manufacturing facilities associated with the 125 series.
The BAe 125 is a low-wing monoplane featuring twin engines mounted at the rear of the fuselage. Its wing exhibits a modest sweep and is derived from the wing planform of the larger de Havilland Comet. To enable operations from short runways, it incorporates sizable slotted flaps and airbrakes; this design also permits takeoffs from reinforced grass strips.[1][2] The fuselage is cylindrical, with a one-piece wing attached beneath it. Most of the wing and fuselage manufacturing and assembly occur independently before being joined late in production.[3] Integral fuel tanks housed within the wing store the majority of the aircraft’s fuel.[4]
Initial variants utilized several iterations of the Bristol Siddeley Viperturbojet engines, while subsequent models transitioned to more advanced turbofan engines such as the Garrett TFE731 and Pratt & Whitney Canada PW300.[5][6] Each engine powers an electrical generator and hydraulic pump that supply energy to aircraft systems, ensuring all systems remain operational even if one engine fails.[7]
Aerodynamic balancing of all control surfaces is achieved through set-back hinges and geared tabs. Flaps and airbrakes operate hydraulically, whereas the ailerons, elevators, and rudder are controlled manually. The control system design accommodates integration of a Collins-built A.P.103 autopilot.[4] The aircraft includes a de-icing system combining engine bleed air, TKS fluid for general airframe protection, and electrically heated windshields to prevent ice accumulation. Its avionics suite also features weather radar.[2] Certain Royal Air Force models were outfitted with countermeasures against infrared missile threats.[7]
The pressurized fuselage was engineered to seat two pilots alongside six passengers comfortably. Multiple interior layouts were available, emphasizing passenger comfort. In executive configurations, the cockpit is separated from the main cabin; a single entrance located just behind the cockpit creates a vestibule area used for luggage storage and in-flight meal preparation.[2] The cabin floor is unobstructed with 5 feet 9 inches (1.75 m) of standing height and a 3 feet (0.91 m) wide door that facilitates loading bulky items—a feature particularly valued by military users.[8] Starting with Series 400 models, the internal “up and over” door was replaced by a conventional outward-opening door equipped with built-in steps. An emergency overwing exit hatch is positioned mid-cabin above the starboard wing, although some variants include exits on both sides.[2] The rear fuselage houses a spacious equipment compartment and, in some versions, one or two auxiliary fuel tanks for extended range operations.[7]
Operational history
As one of the earliest executive jets to enter service, the British Aerospace 125 has been utilized by a diverse range of operators, including government agencies, military forces, private individuals, and corporate entities; it has also been employed by several commercial airlines. A significant portion of its customer base has been concentrated in North America; by 1990, over 400 of the approximately 650 active aircraft were operating within the United States. Reports indicate that during much of its production period, an aircraft was sold roughly every seven business days. To maintain competitiveness against larger business jets such as the Gulfstream IV and Falcon 900, progressively larger models were introduced to broaden the aircraft’s market appeal.
The Royal Air Force was among the earliest prominent operators, acquiring 20 units configured as navigation trainers under the designation Hawker Siddeley Dominie T.1. These aircraft entered service in 1965 and underwent upgrades in 1996 to better prepare crews for contemporary aircraft systems, including the installation of advanced radar equipment. The Dominie remained operational for over 45 years before being retired in 2011 due to reduced demand. Additional British Aerospace 125s were procured by No. 32 Squadron RAF for communication and light transport roles; these aircraft occasionally transported Queen Elizabeth II and other members of the British royal family. During the latter phase of the War in Afghanistan (2001–2021), several 125s were deployed to move military officials and key personnel to and from the region. Although initially planned for retirement by 2022, the type was withdrawn from RAF service earlier, in 2015.
By the early 1990s, British Aerospace was producing two principal variants: the 125-800 and the larger 125–1000. The latter conducted its maiden flight on 16 June 1990 and featured enhancements aimed at achieving intercontinental range capabilities. These improvements included adopting the newly developed Pratt & Whitney Canada PW300 engines alongside modern digital avionics systems such as FADEC. Following Raytheon’s acquisition of British Aerospace’s business jet division during the 1990s, these variants were rebranded as the Hawker 800 and Hawker 1000 respectively.
Notably, the 125 holds the distinction of being the only business jet ever subjected to a hijacking: in 1967, a chartered aircraft carrying former Congolese Prime Minister Moïse Tshombe was forcibly diverted to Algeria by armed individuals aboard. Additionally, it is likely unique among business jets for surviving an impact from an air-to-air missile: in August 1988, a British Aerospace 125-800 transporting Botswana President Quett Masire was unintentionally struck by a missile fired from a nearby Angolan MiG-23. Despite severe damage—including engine loss, cabin decompression, and ruptured fuel tanks—the aircraft was safely landed by BAe test pilot Arthur Ricketts and subsequently rebuilt.
In 2013, regulatory changes by the FAA imposed restrictions on jets weighing 75,000 pounds (34,000 kg) or less that did not meet stage 3 noise standards, explicitly referencing the 125 series. Consequently, any such aircraft had to either be equipped with compliant engines or fitted with a hush kit to operate within most U.S. airspace after December 31, 2015.
This initial model was equipped with 3,000 lbf (13 kN) Viper 20 or 520 engines. A total of ten were constructed, including two prototypes (measuring 43 ft 6 in (13.26 m) in length with a wingspan of 44 ft (13.41 m)) and eight production units extended to 47 ft 5 in (14.56 m) long with a wingspan of 47 ft (14.33 m).[9]
Series 1A/1B – featured upgraded Bristol Siddeley Viper 521 engines delivering 3,100 lbf (14 kN) thrust each, and reduced cabin windows from six to five due to excessive noise near the engine-adjacent window. The Series 1A was tailored for US FAA certification with 62 units built, while the Series 1B targeted other markets with 13 produced.[10]
Series 1A-522 and 1B-522 – versions of Series 1A/B fitted with Viper 522 engines.[11]
Series 1A-R522 and 1B-R522 – Series 1A-522 and 1B-522 variants equipped with extended-range fuel tanks, modified flaps, and altered main landing gear doors.[11]
Series 1A-S522 and 1B-S522 – Certain aircraft structurally upgraded to Series 3 specifications but maintaining the same maximum landing weight and operational ceiling.[11]
Series 2
Designed as a navigation trainer for the Royal Air Force, this series included twenty units designated as Dominie T.1 powered by Rolls-Royce Viper 301 engines.[12] The Dominie maintained six windows on the port side and only the four rearmost on the starboard side.
Series 3
Series 3A/B – variants powered by Viper 522 engines featuring higher weight limits.[11]
Series 3A/R and 3B/R – early models upgraded to Series 3 standard without changes to maximum landing weight or altitude but with an additional ventral fuel tank increasing capacity by 135 US gallons.[11]
Series 3A/RA and 3B/RA – Series 1A/B aircraft structurally modified to meet Series 3 standards, including increased zero fuel weight, ramp weight, and an extra ventral fuel tank of 135 US gallons.[11]
Series 3B/RB – a variant of the 3B/RA featuring enhanced maximum ramp and takeoff weights.[11]
Series 3B/RC – configured as a navigation aid checker with a four-seat cabin plus additional avionics and flight inspection equipment.[11]
EC-93 – designation used by the Brazilian Air Force for an electronic warfare adaptation of the Series 3B/RA.[13]
VC-93 – Brazilian Air Force VIP transport variant based on the Series 3B/RA.[13]
Series 400
Series 400A and 400B – featured increased maximum ramp and brake-release weights along with a new outward-opening main entry door fitted with integrated steps.[11] Beginning in 1970, Series 400A models marketed in the United States were branded as Beechcraft Hawker BH.125 Series 400A.[11]
Series 401B – improvements included higher maximum takeoff and zero fuel weights plus adjustments to cabin loading.[11]
Series 403A(C) – Canadian-specific version equivalent to the Series 403B.
Series 403B – incorporated increased maximum takeoff, zero fuel, and ramp weights along with cabin loading modifications.[11]
HS.125 CC1 – British military designation for a communications aircraft based on Series 400 serving the Royal Air Force.
Series F400A and F400B – upgraded with Honeywell TFE731 engines.
EU-93 – Brazilian Air Force electronic warfare variant derived from the Series 403B.[13]
VU-93 – Brazilian Air Force VIP transport version of the Series 403B.[13]
XU-93 – experimental model used by the Brazilian Air Force.[13]
Series 600
Series 600A and 600B – incorporated Viper 601-22 engines, increased weight limits, higher operating speeds, plus a fuselage extension of three feet one inch (0.94 m) to accommodate ten passengers including an additional forward window. Fuel capacity was expanded by adding a dorsal fairing tank; aerodynamic improvements included revised aileron tab arrangements and control gearing. The fuselage stretch and steeper windshield slope eliminated the characteristic cockpit fairing.Template:Fix/category[citation needed] From 1973 onwards, Series 600A aircraft were marketed as Beechcraft Hawker BH.125 Series 600A.[11]
Series 600B/1
Series 600B/2
Series 600B/3
Series F600A and F600B – versions re-engined with Honeywell TFE731 turbofans.
HS.125 CC2 – British military designation for communications aircraft based on Series 600 serving the Royal Air Force.
Series 700
The Series 700A and 700B featured Honeywell TFE731-3RH turbofan engines producing 3,720 lbf (16.5 kN) thrust each, with their maiden flight on June 19, 1976. Earlier models could also be retrofitted with these engines.
BAe 125 CC3 – British military designation for communications aircraft based on Series 700 used by the Royal Air Force.
HS.125 Protector – maritime patrol adaptation of Series 700 equipped with search radar and cameras.
Series 800
The BAe 125 800 introduced enhancements such as an extended wingspan, aerodynamic nose redesign, tailfin extension, larger fuel tanks, incorporation of an EFIS cockpit—the first corporate jet to do so—and upgraded powerplants. Its first flight occurred on May 26, 1983.
The final iteration in this line was the Hawker 800, marketed under "Corporate Aircraft" before being succeeded by the Hawker 800XP.
The Hawker 800XP variant was equipped with TFE731-5BR1H turbofan engines delivering 4,660 lbf (20.7 kN) thrust each.
The designations Hawker 800SP and 800XP2 refer to Hawker models fitted with winglets manufactured by Aviation Partners Inc. (API).
Hawker 850XP – factory-installed winglets combined with interior enhancements applied to the Hawker 800XP.
Hawker 900XP – an upgrade over the Hawker 850XP featuring Honeywell TFE731-50R turbofans optimized for hot/high conditions along with avionics improvements.
Hawker 750 – a derivative of the Hawker 800XP featuring a lightweight interior design and replacing the rear ventral fuel tank with a heated baggage compartment.
The United States military designated a derivative of the BAe 125 800 as the C-29A, intended to succeed the Lockheed C-140A JetStar for combat flight inspection and navigation missions worldwide. This model participated in operations during both Desert Shield and Desert Storm in the First Gulf War.
The Japanese acquired a flight inspection variant known as the U-125, based on the BAe 125 800.
The search-and-rescue version for Japan is designated as the U-125A, derived from the Hawker 800 and equipped with APS-134LW radar systems.[14]
The British Aerospace BAe 125 Series 1000A and 1000B represent an intercontinental upgrade of the Series 800 featuring a fuselage stretch of two feet nine inches (0.84 m) to expand seating capacity to fifteen passengers, increased fuel storage, and Pratt & Whitney Canada PW-305 turbofan engines each producing 5,200 lbf (23 kN) thrust. Their first flight took place on June 16, 1990, with fifty-two units built.
The designation Hawker 1000 was adopted after 1994 for BAe 125-1000 models.
Handley Page HP.130
A concept proposed in 1963 involved boundary layer control wings powered by two Bristol Siddeley Viper 520 engines rated at 3,000 lbf (13 kN) thrust each, targeting laminar flow research at speeds up to Mach 0.8; this design was never constructed.[15]
Across the globe, private owners, air taxi services, fractional ownership groups, and corporate charter companies utilize this aircraft. From 1965 to 1972, Qantas employed two Series 3 models specifically for crew training purposes.
In December 2022, Japan announced plans to phase out 26 U-125As along with 47 AH-1S, 12 AH-64D, and 33 OH-1 helicopters, replacing them with unmanned aerial vehicles. The government aims to increase defense spending from 1.24% of GDP in fiscal year 2021 to approximately 2.0% over the next decade, retiring these manned aircraft as part of budget optimization.[18]
On 30 June 1967, an Air Hanson HS.125 aircraft (G-ASNU) transporting former Congolese prime minister Moïse Tshombe was hijacked and diverted to Algeria.[35]
On 28 December 1970, a Morrison–Knudsen DH.125 (N36MK) experienced a controlled flight into terrain (CFIT) accident in Idaho, United States, approximately seven miles (11 km) northeast of Boise Airport, at an altitude near 5,700 feet (1,740 m) above sea level. The corporate jet had just dropped off four passengers in Billings, Montana and was returning empty when it crashed more than an hour after sunset, resulting in the fatalities of both pilots.[36][37][38][39]
On 26 May 1971, three Mercurius HS.125 aircraft operated by the South African Air Force collided with Devil's Peak, Cape Town, during rehearsals for a flypast commemorating the republic's tenth anniversary. This tragedy resulted in 11 fatalities.[40][27]
On 20 November 1975, a Hawker Siddeley HS125-600B with registration G-BCUX, serving as a demonstrator for Hawker Siddeley, overran the runway at Dunsfold Aerodrome following a bird strike during takeoff. The aircraft collided with a vehicle traveling on the A281 road and came to rest in a nearby field. The incident caused six fatalities among the car occupants and injured one crew member out of nine onboard. The flight was piloted by World War II ace John Cunningham.[41]
On 8 September 1987, a Hawker Siddeley HS.125 registered FAB-2129 operated by the Brazilian Air Force crashed shortly after departing from Carajás, resulting in the deaths of all nine individuals aboard.[42]
On 7 August 1988, while transporting Botswana's President Quett Masire and his delegation to Luanda, a BAe-125 owned by the Botswana Government was targeted by an Angolan MiG-23 fighter pilot who launched two R-60 (AA-8) missiles. One missile struck the aircraft’s no. 2 engine causing it to detach; the second missile hit the falling engine. Despite this damage, the crew successfully executed an emergency landing on a remote airstrip at Cutio Bie without any casualties.[43][44]
On 16 March 1991, a chartered Hawker Siddeley HS.125-1A (N831LC) carrying members of country singer Reba McEntire’s band crashed into Otay Mountain shortly after departing San Diego – Brown Field Municipal Airport. All ten individuals onboard—eight band members and two pilots—perished in what was attributed to poor visibility conditions.[45][46]
On 31 July 2008, British Aerospace 125 operating as East Coast Jets Flight 81 crashed nose-first into a cornfield after overrunning the runway at Owatonna Degner Regional Airport following a business flight from Atlantic City International Airport. All six passengers and both crew members were killed instantly. Investigation by the NTSB concluded that pilot error was the probable cause.Cite error: Invalid <ref> tag; refs with no name must have content
On 5 September 2015, an HS 125 operated by Senegalair collided mid-air with a Ceiba Airlines Boeing 737 over Senegal. It is believed that the HS 125 experienced decompression incapacitating its flight crew before crashing into the Atlantic Ocean west of Senegal about an hour later; there were no survivors. The Boeing 737 managed to land safely.Cite error: Invalid <ref> tag; refs with no name must have content
On 10 November 2015, a Hawker 700A flying as Execuflight Flight 1526 crashed during approach to Akron Fulton International Airport in Akron, Ohio, resulting in nine fatalities onboard. The National Transportation Safety Board identified pilot error along with FAA inspection deficiencies and operational failures within the charter company as contributing factors.[47][48][49]
On 6 April 2016, a U-125 belonging to the Japan Air Self-Defence Force's Flight Check Squadron crashed in Kagoshima Prefecture after departing from the Japan Maritime Self-Defense Force’s Kanoya Air Field. The aircraft had been conducting air navigation aid system checks when it impacted Mt Takakuma, resulting in the loss of all six crew members.[50][51][52][53]
In early July of 2025, an abandoned BAe-125-700A was discovered crashed in Honduras under circumstances suggesting involvement in illicit drug trafficking activities.[54][55]
Aircraft on display
Canada
N334PS, a Series 125/600A, is exhibited at the Alberta Aviation Museum in Edmonton, Alberta.
United Kingdom
G-ARYB, the second prototype of Series 1, is showcased at the Midland Air Museum in Coventry, England.
G-ARYC, representing the third prototype of Series 1 and the first production model, is on exhibit at the de Havilland Aircraft Museum located in London Colney, England.
G-ASSM, a Series 1/522 variant, can be found in the flight gallery of the Science Museum London, England.
N600MK, a Series 125/600A aircraft, has been deliberately sunk at Athens Scuba Park in Athens, Texas, serving as an underwater attraction for scuba divers.
N400PR is stationed on the tarmac of Houston Hobby Airport's 1940 Terminal Museum and was recently adorned with artwork by local muralist Mario Figuero (known as 'Gonzo247') during early summer 2019.
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