206 JetRanger

The Bell 206 JetRanger is a family of two-bladed light helicopters built by Bell Helicopter, latterly at its Mirabel plant in Quebec, Canada. Developed from the YOH-4 that lost the US Army's Light Observation Helicopter competition, it was redesigned as the five-seat 206A JetRanger, delivered from January 1967, and stretched into the seven-seat 206L LongRanger in 1975. About 7,300 were built between 1962 and 2017. The Army's OH-58 Kiowa derivative is covered on its own page; the 206 itself serves armed forces, police and government agencies in some 40 countries as a trainer, liaison and observation helicopter, and trained US Army pilots as the TH-67 Creek until 2021 and US Navy pilots as the TH-57 Sea Ranger until 2025.

Development

On 14 October 1960 the US Navy, acting for the Army, issued a request for proposals for a Light Observation Helicopter to 25 manufacturers. Bell's D-250 design, designated YHO-4, was named a winner of the design competition alongside Hiller's on 19 May 1961 and became the Model 206, redesignated YOH-4A in 1962; the first of five prototypes flew on 8 December 1962. After a fly-off between the Bell, Hughes and Fairchild-Hiller prototypes the Army chose the Hughes OH-6 in May 1965.

Bell turned to the civil market, but the YOH-4A seated only three cramped passengers with little cargo space. A sleeker fuselage added 0.45 m³ (16 cu ft) of baggage volume and produced the 206A, named JetRanger after the Model 47J Ranger; it first flew on 10 January 1966, was FAA-certified on 20 October 1966 and reached customers on 13 January 1967. The 206B JetRanger II arrived in 1971 and the 206B-3 JetRanger III in 1977; 206B-3 production ended in 2010, and from around 2015 the Bell 505 Jet Ranger X replaced the five-seat models. The 206L LongRanger stretched the fuselage by 760 mm (30 in) for two extra rear-facing seats and its L-3 and L-4 models use the Allison 250-C30P, derated from 485 kW (650 shp) to hold rated power on hot days and at altitude. A military export version, the 206L TexasRanger, went no further than a 1981 demonstrator; thirteen twin-engined 206LT TwinRangers were delivered in 1994–97, and 206L-4 production ended in June 2017. The Bell 505 has since been adopted as a military trainer: Bell completed delivery of 40 to the Republic of Korea Army and Navy in June 2025.

Design

The JetRanger is a conventional light helicopter with a two-bladed main rotor of 10.16 m (33 ft 4 in) diameter and a single Allison 250-series turboshaft. The 206B JetRanger II has a 298 kW (400 shp) Allison 250-C20 and seats a pilot and four passengers; the fuselage is 9.50 m (31 ft 2 in) long, empty weight 660 kg (1,455 lb) and maximum take-off weight 1,451 kg (3,200 lb). At that weight it reaches 226 km/h (122 kn) at sea level, cruises at 222 km/h (120 kn) and flies 624 km (337 nmi) without reserves; service ceiling is 6,100 m (20,000 ft). The 206B-3 added the 250-C20J and 51 mm (2 in) to the tail rotor diameter for better yaw control. The TH-57B/C and TH-67 trainers are commercial 206B-3s distinguished by their cockpit fits.

Armament

Most military JetRangers are unarmed trainers and liaison aircraft. Sweden armed its Agusta-Bell 206As: the Army's 21 Hkp 6A flew training, liaison, light transport, scout and anti-tank missions armed with anti-tank guided missiles, and the Navy's ten Hkp 6B were anti-submarine helicopters carrying depth charges, fitted with emergency inflatable floats.

Operational History

The US Navy bought 40 commercial 206As in January 1968 as the TH-57A Sea Ranger, its primary helicopter trainer for Navy, Marine Corps, Coast Guard and selected NATO and allied students at Naval Air Station Whiting Field, Florida. They were joined by instrument-equipped TH-57Cs from the mid-1980s and, from 1989, by TH-57Bs replacing the TH-57A, both 206B-3s; the Navy procured 40 TH-57As, 51 TH-57Bs and 89 TH-57Cs in all. The replacement, up to 130 Leonardo TH-73A Thrashers contracted in January 2020, reached Whiting Field from August 2021. The Sea Ranger was phased out from fiscal year 2023; the last in training service, a TH-57C, made its final flight on 19 September 2025, 57 years after the type's introduction.

The Army, which had selected the 206A as the OH-58A Kiowa in 1968, chose the 206B-3 as winner of the New Training Helicopter competition: an initial 137 TH-67 Creeks, 35 VFR and 102 IFR, were bought in 1993 for Fort Rucker, Alabama, where the fleet grew to 181 aircraft flying on civil "N" registrations as public-use aircraft. After the UH-72A Lakota began training Fort Rucker students in 2016, the Army transferred 60 TH-67s to the Regional Helicopter Training Center at Melgar, Colombia, in May 2019, and the type's final flight ceremony at Cairns Army Airfield on 17 February 2021 closed a career of more than 1,915,000 flight hours and over 25,000 initial-entry students.

As of October 2024, FlightGlobal counted 47 Bell 206s and ex-US Army TH-67As with Colombia's Aerospace Force, the largest military fleet after the US Navy's 100 TH-57s, ahead of the Italian Army and Taiwan's Army with 29 each and the Mexican Air Force with 24. Canada flew the 206B-3 as the CH-139 JetRanger; the survivors at the RCAF's contractor-run Southport school are giving way to the CT-153 Juno, an Airbus H135 first delivered in mid-2026. Brazil's Air Force flew 206B-3s as the OH-4 observation and VH-4 VIP aircraft, and its Navy's IH-6B training JetRangers are being replaced by H125s ordered in 2022 and accepted from April 2025. Other military operators include the armies of Argentina, Greece, Iraq, Pakistan, Thailand and Turkey and the air forces of Chile, Israel, Morocco and Oman; Australia, Austria, Kuwait and Sweden have retired theirs. Military losses include an Agusta-Bell 206A-1 that crashed at the Central Command helipad at Neve Yaakov, Israel, on 12 January 1994, killing a general officer and three others, and a Bangladesh Army 206L that crashed at Kalihati on 9 March 2009, killing a divisional commander and its pilot. After a chartered 206 crashed on Sifnos, Greece, on 17 August 2026, killing three, the Greek Civil Aviation Authority cited a possible tail-rotor malfunction and asked operators to inspect the tail rotor and its drive before take-off.

Variants

• Bell 206A: Initial production JetRanger with the Allison 250-C18, FAA-certified in 1966 and selected as the OH-58A Kiowa in 1968; licence-built by Agusta.
• Bell 206B / 206B-3 JetRanger II / III: 1971 and 1977 versions with the 250-C20 and 250-C20J, the B-3 built until 2010 and the basis of the TH-57B/C, TH-67 and CH-139.
• Bell 206L LongRanger: Seven-seat stretch, developed through the L-1, L-3 and L-4 until June 2017.
• Bell 206LT TwinRanger: New-build twin-engined 206L-4, thirteen delivered in 1994–97 before the Bell 427 replaced it.
• TH-57 Sea Ranger: US Navy primary trainer from 1968 to September 2025; 40 TH-57A (206A), then instrument-equipped TH-57C and TH-57B (206B-3), replaced by the TH-73A Thrasher.
• TH-67 Creek: US Army primary and instrument trainer, an initial 137 206B-3s bought in 1993 for a fleet that peaked at 181; 60 went to Colombia in 2019 and the type was retired in February 2021.