The North American Rockwell OV-10 Bronco is an American two-seat, twin-turboprop, twin-boom light attack and observation aircraft built for the U.S. Marine Corps, Air Force and Navy. It first flew on 16 July 1965, 360 were built, and it flew forward air control and armed reconnaissance missions from Vietnam to the fight against ISIS in 2015. Developed by North American Rockwell.
The North American Rockwell OV-10 Bronco is an American two-seat, twin-turboprop, twin-boom light attack and observation aircraft built for the U.S. Developed by North American Rockwell.
Photo: Jakub Hałun, CC BY-SA 4.0, via Wikimedia CommonsSee Specifications for full detail.
The North American Rockwell OV-10 Bronco is an American two-seat, twin-turboprop light attack and observation aircraft with a twin-boom layout, built by North American Rockwell for the U.S. Marine Corps, Air Force and Navy. It was designed to a tri-service requirement conceived by the Marine Corps, and the YOV-10A prototype first flew on 16 July 1965. [1] [2]
Between 1965 and 1986, 360 were built. The Bronco flew forward air control and armed reconnaissance in Vietnam, where 81 were lost, and served the Marine Corps in the 1991 Gulf War. The United States retired it in the 1990s, but it flew combat again against ISIS in 2015 and served the Philippine Air Force until 28 December 2024. [1] [3]
In 1963 the U.S. services issued a requirement for a Light Armed Reconnaissance Aircraft (LARA), a light attack and observation type for counter-insurgency work that the Marine Corps, Air Force and Navy could all use. Eleven proposals were submitted in March 1963, and in August 1964 North American Aviation's NA-300 was selected. [1] [2] [4]
The YOV-10A prototype first flew on 16 July 1965 with 600 shp Garrett T76 turboprops, later replaced by 715 shp versions. The first production order was placed in 1966, the first production OV-10A flew in August 1967, and production of the A model ended in April 1969. In all 360 Broncos were built from 1965 to 1986. [1] [3]
The Bronco's two crew sat on ejection seats in a central fuselage between two tail booms. Stub sponsons on the fuselage carried four 7.62 mm M60C machine guns and hardpoints, and the aircraft could carry up to 3,600 lb of rockets, bombs, gun pods or missiles. [1] [2]
The rear of the fuselage was a small cargo bay that held 3,200 lb of cargo, five combat troops, or two stretchers and a medical attendant. The OV-10A spans 40 ft (12.19 m), is 41 ft 7 in (12.67 m) long and weighs 14,444 lb at maximum weight. It was built for short take-off and landing from rough strips, needing a take-off run of 740 ft, and the Air Force gives it a top speed of 281 mph and a range of 1,240 miles. [2] [1]
The first Air Force OV-10As for combat arrived in Vietnam in July 1968, and 157 were delivered to the Air Force in all, mainly for forward air control with units such as the 504th Tactical Air Support Group at Bien Hoa. They also flew observation, helicopter escort, armed reconnaissance, gunfire spotting and utility missions. The Marine Corps' first Broncos, for VMO-2, arrived at Da Nang on 6 July 1968, and the Corps took 114 in all. [2] [3] [5]
From 1971 the 23rd Tactical Air Support Squadron flew Pave Nail OV-10As fitted with a Pave Spot laser designator and night equipment, marking targets on the Ho Chi Minh Trail for laser-guided bombs dropped by F-4 Phantoms; they reverted to standard OV-10As after 1974. The Navy formed Light Attack Squadron Four (VAL-4), the 'Black Ponies', in January 1969 and flew it until April 1972, interdicting enemy supply lines and supporting Marines, SEALs and river boats. The war cost 81 Broncos: 64 Air Force, 10 Marine Corps and 7 Navy. [4] [1]
In the late 1980s the Air Force began replacing its Broncos with the OA-37B and OA-10A, and its last two OV-10 squadrons retired the type in 1991. The Marine Corps kept two observation squadrons, each with nine OV-10As and nine OV-10Ds. It had 17 OV-10As converted to OV-10Ds with the Night Observation System and 1,040 shp engines, and took its Broncos to the Gulf War; its units arrived in Saudi Arabia on 17 January 1991. VMO-2 flew 286 combat missions and 900 hours there. [3] [1] [5]
The Bronco's low speed, low-altitude work and lack of modern countermeasures made it vulnerable. On 25 February 1991 an Iraqi surface-to-air missile shot down OV-10A 155424 of VMO-1; the observer, Capt. David Spellacy, was killed, and the pilot, Maj. Joseph Small, was captured and released on 6 March. It was the last Marine Corps combat loss of a Bronco. The Corps retired the type in 1995, with VMO-1 and VMO-2 the last squadrons. [6] [1] [4]
Thailand bought 32 new OV-10Cs in the early 1970s for counter-insurgency work, and its Broncos reportedly won most Thai bombing competitions until the F-5E arrived; most were passed to the Philippines in 2004. The Philippine Air Force had received 24 OV-10As in 1991 and nine more later, and used them in combat as late as 1 June 2017, when they bombed Maute group positions in the Battle of Marawi, before retiring the type on 28 December 2024 in favour of the Embraer Super Tucano. Colombia flew 12 ex-USAF OV-10As in counter-insurgency operations from 1991 to November 2015, losing at least one in combat, and Indonesia grounded its 16 OV-10Fs after a fatal accident on 23 July 2007. Morocco took six ex-Marine aircraft in 1981 and one was shot down in 1985. [1]
Venezuelan OV-10Es took part in the failed coup attempt of 27 November 1992, in which four Broncos were lost, two of them shot down by F-16s. In civil hands, the Bureau of Land Management flew seven for firefighting until 1999, NASA used the third prototype for low-speed research in the 1970s, and in 1993 CalFire acquired six surviving BLM aircraft and 13 former Marine Corps OV-10As to replace its Cessna O-2s as air attack aircraft, leading its air tankers over the drop zone. [1]
In 2012, $20 million was allocated to an experimental Bronco unit. Two OV-10G+ aircraft, taken from NASA and State Department stocks, deployed in May 2015 and flew more than 120 combat sorties over 82 days against ISIS in Iraq, providing close air support for special forces. The Air Force judged the experiment a success but said regular reactivation was unlikely because of the overhead costs. Boeing had proposed a modernised OV-10X with a glass cockpit, sensors and smart weapons in 2009, but it was not built. [1]
The Philippine Air Force retired the last military Broncos at the end of 2024, while CalFire continues to fly OV-10s. NASA kept one at Langley for low-speed and wake research as late as 2009, along with three ex-State Department aircraft from drug-eradication work. The OV-10 Squadron at Chino, California, is restoring seven ex-Marine OV-10Ds, and the first, 155493, returned to flight in July 2019. [1]
The most reliable place to see OV-10s in the air is California during fire season, where CalFire's air attack Broncos fly ahead of the tankers. Restored OV-10Ds from Chino also appear at air shows.
| Performance | |
| Max Speed | 244 kn (281 mph / 452 km/h) |
|---|---|
| Cruise SpeedCruise Speed — The economical speed an aircraft sustains for the bulk of a flight - lower than maximum speed, chosen for the best balance of time and fuel burn. Glossary → | 223 mph |
| RangeRange — How far an aircraft can fly without refuelling. Quoted figures vary with payload, speed and reserves - see also ferry range and combat radius. Glossary → | 1,240 mi |
| Service CeilingService Ceiling — The highest altitude at which an aircraft can still climb at a useful rate (typically 100 ft/min). Above it, the air is too thin to keep climbing meaningfully. Glossary → | 26,000 ft |
| Airframe & Weight | |
| Wingspan | 40 ft |
| Length | 41 ft 7 in |
| Height | 15 ft 1 in |
| WeightMTOW — Maximum Take-Off Weight - the heaviest an aircraft is certified to be at the start of its take-off run, including fuel, crew, payload and the aircraft itself. Glossary → | empty: 6,893 lb; MTOW: 14,444 lb |
| Power & Payload | |
| Engines | 2 × Garrett-AiResearch T76 turboprops, 715 shp each |
| ArmamentArmament — The weapons an aircraft can carry: guns, missiles, bombs and rockets, whether mounted internally, on wing hardpoints, or in bomb bays. Glossary → | 4 × 7.62 mm M60C machine guns in the sponsons; up to 3,600 lb of rockets, bombs, gun pods or missiles |
| Crew | 2 |
| CapacityPayload — Everything an aircraft is carrying that isn't the aircraft or its fuel: passengers, cargo, or weapons. Payload and fuel usually trade off against each other. Glossary → | 3,200 lb cargo, 5 troops, or 2 stretchers and an attendant |
| Program & Service | |
| Manufacturer | North American Rockwell |
| Origin | United States |
| First Flight | July 16th 1965 |
| Service Entry | July 1st 1968 |
| Retired | December 28th 2024 |
| Number Built | 360 |
| Unit Cost | $4.6M in 2026 dollars (CPI-adjusted) |
| Combat Losses | 81 in Vietnam (64 USAF, 10 USMC, 7 USN); USMC losses in the 1991 Gulf War |
8 notable events involving the OV-10 Bronco, 1965 to 2024. 1 deaths are recorded across the 1 of these with a figure listed. Curated rather than exhaustive.
The first prototype flew with 600 shp Garrett T76 turboprops, 11 months after North American's NA-300 won the LARA competition.
VMO-2 received its first OV-10s in Vietnam. The first Air Force OV-10As for combat arrived the same month.
The Navy's only OV-10 attack squadron formed to support riverine forces and SEALs. It flew until April 1972 and lost seven Broncos.
OV-10A 155424 was hit by an Iraqi surface-to-air missile. Capt. David Spellacy was killed and Maj. Joseph Small was captured, then released on 6 March 1991. It was the last Marine Corps combat loss of a Bronco.
Rebel OV-10Es took part in the coup attempt; four Broncos were lost, two of them shot down by Venezuelan F-16s.
Indonesia grounded its OV-10Fs after a fatal accident, and replaced them with Embraer Super Tucanos in 2012.
Two OV-10G+ Broncos began a deployment in which they flew more than 120 combat sorties over 82 days.
The last military operator withdrew its OV-10s from service, replacing them with the Embraer Super Tucano.
| YOV-10A / OV-10A | The prototypes, first flown on 16 July 1965 with 600 shp T76 engines and later 715 shp units, and the main production model, 271 built. The Air Force took 157 as forward air controllers and the Marine Corps 114. The first production aircraft flew in August 1967, and OV-10A production ended in April 1969. |
| OV-10B / OV-10B(Z) | Target-towing versions built for West Germany. The OV-10B(Z) added a J85 turbojet to the two turboprops. |
| OV-10C / E / F | Export versions of the OV-10A: 32 OV-10Cs for Thailand, most of them later donated to the Philippines in 2004, 16 OV-10Es for Venezuela, and 16 OV-10Fs bought by Indonesia in 1976. Venezuelan OV-10Es took part in the failed coup attempt of 27 November 1992, in which four were lost. |
| OV-10D | The Marine Corps' Night Observation System version, 17 converted from OV-10As, with 1,040 shp engines and night-vision sensors. It flew in the 1991 Gulf War, where VMO-2 flew 286 combat missions. The Marine Corps retired its last Broncos in 1995. |
| OV-10G+ | Two ex-NASA and State Department aircraft upgraded for the Combat Dragon II experiment. With $20 million allocated in 2012, they deployed from May 2015 and flew more than 120 combat sorties over 82 days against ISIS. |
Broncos are displayed at museums across the United States and abroad, and the OV-10 Squadron at Chino, California, is returning ex-Marine OV-10Ds to flying condition.
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