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A-10 Thunderbolt II

Fairchild Republic · Fighter / Attack · USA · Cold War (1970–1991)

A-10 Thunderbolt II — Fighter / Attack
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The Fairchild Republic A-10 Thunderbolt II — universally known as the Warthog — is a single-seat, twin-engine subsonic close-air-support attack aircraft built around the GAU-8/A Avenger 30mm rotary cannon, the largest, heaviest, and most powerful gun ever fitted to a fixed-wing aircraft. Designed in the early 1970s in response to the U.S. Air Force's A-X requirement for a dedicated tank-killer to counter Soviet armour in Central Europe, the A-10 entered service in 1977 and remains in front-line use in 2026, despite repeated Air Force attempts to retire it in favour of the F-35 Lightning II.

The Warthog is engineered around survivability rather than speed. Its two General Electric TF34-GE-100A turbofans are mounted high on the rear fuselage to reduce ground-fire vulnerability and infrared signature. The pilot sits in a 1,200-pound titanium "bathtub" capable of stopping 23mm rounds. Critical flight controls are mechanically backed up so the aircraft can land with both hydraulic systems shot out. The wings are straight and unswept — top speed is just 420 mph (Mach 0.56) — but the trade-off is the ability to loiter for hours over a battlefield, turn tightly enough to make repeated gun passes on the same target, and absorb damage that would destroy almost any other modern combat aircraft.

The GAU-8/A Avenger is the heart of the design. The seven-barrel Gatling cannon fires depleted-uranium and high-explosive incendiary rounds at 3,900 rounds per minute, with a 1,174-round magazine running the length of the fuselage centreline — so long that the nose gear had to be offset to make room. The aircraft was literally designed around the gun, not the other way around. Beyond the cannon the A-10 carries up to 16,000 lb of external stores: AGM-65 Maverick air-to-ground missiles, AIM-9 Sidewinders for self-defence, JDAM and Paveway laser-guided bombs, cluster munitions, and Hydra 70 rocket pods.

Combat debut came in the 1991 Gulf War, where 144 A-10s flew over 8,100 sorties and were credited with destroying more than 900 Iraqi tanks, 2,000 other military vehicles, and 1,200 artillery pieces — an outsized share of the coalition's armour-killing total. Subsequent operations in the Balkans, Afghanistan, and Iraq cemented the Warthog's reputation with ground troops, who routinely cite the BRRRRT of the GAU-8 as a morale weapon in its own right. The Air Force tried to retire the A-10 multiple times between 2014 and 2024 to fund F-35 procurement; Congress repeatedly blocked the move. The current plan retires the A-10 fleet by the end of the decade, with the last airframes expected to leave service around 2029. 715 aircraft were built between 1972 and 1984, and the U.S. Air Force is the only operator — no foreign sales were ever approved.

For Kids — a shorter, friendlier version

The A-10 Thunderbolt II — nicknamed the Warthog — is the toughest airplane in the U.S. Air Force. It's built around a giant Gatling gun in its nose. The gun is so big that the plane was designed around it.

When the A-10 fires, it sounds like a giant zipper being pulled at the speed of sound. The bullets are the size of soda bottles, and 65 of them come out every second.

The A-10's main job is to protect soldiers on the ground from enemy tanks. It is slow compared to fighter jets (about 400 mph at top speed), but it can fly low and slow, circle over a battlefield, and attack targets from very close. The pilot sits inside a titanium bathtub — armor strong enough to stop bullets from below.

The Warthog is famous for surviving terrible damage and still flying home. Pilots have brought back A-10s with one engine missing, parts of the tail blown away, and dozens of bullet holes. The plane's two engines are mounted high up on the back, away from the dirt and battle damage. Many other airplanes would not survive such hits, but the A-10 is built like a tank with wings.

About 715 A-10s were built between 1972 and 1984. As of 2026, more than 280 are still flying. The Air Force has tried to retire the A-10 several times, but ground soldiers love it so much that Congress keeps voting to keep it. The replacement plan keeps getting delayed — for now, the Warthog flies on.

Fun Facts

  • The A-10's giant GAU-8 Avenger Gatling gun shoots bullets the size of soda bottles — at 3,900 rounds per minute.
  • When the gun fires for one second, it shoots about 65 bullets — each one as long as your forearm.
  • The A-10 is the only Air Force plane named the Thunderbolt, after the World War II P-47 fighter. Pilots call it the Warthog because it's ugly.
  • The pilot's seat sits inside a 1,200-pound titanium 'bathtub' — armor that can stop heavy machine-gun fire from below.
  • The Warthog can fly home with one engine missing, half a wing gone, or the tail mostly shot away.
  • One A-10 in 2003 landed safely with over 300 bullet holes after a mission over Iraq.
  • The A-10 can take off and land on rough dirt runways close to the front lines, unlike most jets.

Kids’ Questions

Why is the A-10 called the Warthog?

The official name is Thunderbolt II, but pilots and ground crews nicknamed it the Warthog because of its looks. It's not a beautiful plane — it has a stubby nose with a big gun sticking out, two engines mounted on top like ears, and a twin-tail at the back. The whole plane looks like a wild African pig with wings. Pilots love the name. It also fits the plane's job: warthogs are tough, ugly animals that nothing wants to mess with.

Why does the Air Force want to retire it?

The A-10 is old (designed in the early 1970s) and slow compared to modern jets. Air Force leaders think the F-35 stealth fighter can do the A-10's job using smart bombs from a safer distance. But many ground soldiers and pilots disagree — they say nothing beats having a tough plane circling overhead, low and slow, with a giant gun that can hit enemies just yards away from friendly troops. So far, Congress has kept the A-10 alive. Some Warthogs may fly all the way until 2040.

Variants

A-10A
Original 1977 production variant. Analogue cockpit, no precision targeting pod, daylight visual attack only. 715 airframes built; all later upgraded to A-10C standard.
OA-10A
Forward Air Controller (Airborne) variant — same airframe but tasked with target marking and battlefield coordination using white phosphorus rockets and laser designation.
A-10C
Precision Engagement upgrade (2007). Two multifunction colour displays, hands-on throttle and stick controls, Sniper or LITENING targeting pod, JDAM/JSOW integration, Link 16 datalink. The current operational standard.
YA-10B Night/Adverse Weather
Two-seat night/all-weather prototype with terrain-following radar and FLIR. One airframe converted in 1979; the variant was cancelled in favour of upgrading the single-seat fleet.

Notable Operators

United States Air Force
Sole operator. The A-10 has flown with USAF Active, Reserve, and Air National Guard units since 1977 and remains assigned to wings at Davis-Monthan AFB (AZ), Moody AFB (GA), and overseas at Osan (Korea), with retirement scheduled by 2029.

Frequently Asked Questions

Why is the A-10 called the Warthog?

The nickname comes from the aircraft's deliberately ugly, utilitarian appearance — straight wings, blunt nose, twin pod-mounted engines bolted to a slab-sided fuselage — which contrasted sharply with the sleek supersonic fighters of its era. Pilots embraced the name as a badge of honour. The official name "Thunderbolt II" honours the Republic P-47 Thunderbolt ground-attack fighter of World War II.

What makes the GAU-8 Avenger cannon so unique?

It is a 30mm seven-barrel Gatling cannon weighing about 4,000 lb fully loaded — roughly the weight of a Volkswagen Beetle. It fires armour-piercing depleted-uranium PGU-14/B rounds at 3,900 rounds per minute, generating a recoil force greater than the combined thrust of both engines. Pilots fire in 1–2 second bursts to avoid stalling out from the recoil. The PGU-14/B can penetrate the top armour of any tank in service when fired in a 30-degree dive (USAF National Museum fact sheet).

How survivable is the A-10 in combat?

Exceptionally so by jet-fighter standards. The pilot sits in a titanium armour 'bathtub' weighing roughly 1,200 lb that can stop 23mm rounds. Hydraulic flight controls have manual reversion backup, the engines are physically separated and high-mounted to reduce mutual destruction risk, and self-sealing fuel tanks limit fire damage. The 1991 Gulf War saw multiple A-10s return to base with one engine destroyed, large sections of wing missing, and dozens of holes through the fuselage — losses that would have downed almost any other modern fighter.

Why does the Air Force keep trying to retire the A-10?

The A-10's straight-winged, subsonic design is highly vulnerable to modern air defences (S-300/400-class systems, MANPADS), and the Air Force argues the close-air-support mission can be performed by the F-35, F-15E, and B-1B at higher altitude with precision weapons. Critics — particularly the Army — counter that nothing replicates the A-10's loiter time, gun, and pilot situational awareness over a contested battlefield. Congress repeatedly funded A-10 retention against Air Force preference between 2014 and 2024.

When will the A-10 be retired?

The U.S. Air Force's current divestment plan retires the A-10 fleet incrementally through FY2026–FY2029, with the final airframes leaving service around 2029. The last A-10s are expected to be the most recently re-winged airframes (the A-10 underwent a comprehensive wing-replacement programme between 2011 and 2019 that extended airframe life to roughly 16,000 flight hours).

Has the A-10 been exported to other countries?

No. The A-10 was never exported — every one of the 715 airframes built served exclusively with the U.S. Air Force. Several countries expressed interest over the decades (notably South Korea and Jordan), but Congressional and USAF reluctance to part with the type prevented any sales from going through.

What's the A-10's combat record?

In the 1991 Gulf War, A-10s flew 8,100+ sorties, were credited with 987 Iraqi tank kills (a coalition record), and downed two helicopters with the GAU-8. They have since flown extensively in Bosnia, Kosovo, Afghanistan, and Iraq from 2003 onwards, and against ISIL from 2014. Total combat losses across all operations have been remarkably low — fewer than 10 airframes lost to enemy action across more than three decades of fighting.

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