Lockheed AC-130 - How Much Does Ac Repair Cost

The Lockheed AC-130 gunship is a heavily armed ground-attack aircraft variant of the C-130 Hercules transport plane. The basic airframe is manufactured by Lockheed, while Boeing is responsible for the conversion into a gunship and for aircraft support. The AC-130A Gunship II superseded the AC-47 Gunship I during the Vietnam War.

The gunship's sole user is the United States Air Force, which uses AC-130U Spooky and AC-130W Stinger II variants for close air support, air interdiction, and force protection, with AC-130J Ghostrider in development. Close air support roles include supporting ground troops, escorting convoys, and urban operations. Air interdiction missions are conducted against planned targets and targets of opportunity. Force protection missions include defending air bases and other facilities. AC-130Us are based at Hurlburt Field, Florida, while AC-130Ws are based at Cannon AFB, New Mexico; gunships can be deployed worldwide. The squadrons are part of the Air Force Special Operations Command (AFSOC), a component of the United States Special Operations Command (SOCOM).

Weaponry is mounted to fire from the port side of the non-pressurised aircraft. During an attack the gunship performs a pylon turn, flying in a large circle around a target, allowing it to fire for far longer than conventional attack aircraft. The AC-130H Spectre was armed with two 20 mm M61 Vulcan cannons, one Bofors 40mm autocannon, and one 105 mm M102 cannon; after 1994 the 20 mm cannons were removed for most missions. The upgraded AC-130U "Spooky" has a single 25 mm GAU-12 Equalizer in place of the Spectre's twin 20 mm cannons, an improved fire control system, and increased ammunition capacity. New AC-130Js based on the MC-130J Combat Shadow II special operations tanker were planned as of 2012. The AC-130W is armed with one 30 mm Bushmaster cannon, AGM-176 Griffin missiles, and GBU-39 Small Diameter Bombs.

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Development

Origins

During the Vietnam War, the C-130 Hercules was selected to replace the Douglas AC-47 Spooky gunship (Project Gunship I) in order to improve mission endurance and increase capacity to carry munitions. Capable of flying faster than helicopters and at high altitudes with excellent loiter time, the use of the pylon turn allowed the AC-47 to deliver continuous accurate fire to a single point on the ground.

In 1967, JC-130A USAF 54-1626 was selected for conversion into the prototype AC-130A gunship (Project Gunship II). The modifications were done at Wright-Patterson Air Force Base by the Aeronautical Systems Division. A direct view night vision telescope was installed in the forward door, an early forward looking infrared (FLIR) in the forward part of the left wheel well, and Gatling guns fixed facing down and aft along the left side. The analog fire control computer prototype was handcrafted by RAF Wing Commander Tom Pinkerton at the USAF Avionics Laboratory at Wright-Patterson AFB. Flight testing of the prototype was performed primarily at Eglin Air Force Base, followed by further testing and modifications. By September 1967, the aircraft was certified ready for combat testing and was flown to Nha Trang Air Base, South Vietnam for a 90-day test program. The AC-130 was later supplemented by the AC-119 Shadow (Project Gunship III), which later proved to be underpowered.

Seven more warplanes were converted to the "Plain Jane" configuration like the AC-130 prototype in 1968, and one aircraft received the "Surprise Package" equipment in 1969. Surprise Package included the latest 20 mm rotary cannons and 40 mm Bofors cannon but no 7.62 mm close support armament. Surprise Package served as a test bed for the avionic systems and armament for the AC-130E.

In 1970, ten more AC-130As were acquired under the "Pave Pronto" project. In the summer of 1971, Surprise Package equipped AC-130s were converted to the Pave Pronto configuration and assumed their new nickname 'Thor'. Conversion of C-130Es into AC-130Es for the "PAVE Spectre" project followed.

Regardless of their project names the aircraft were more commonly referred to by the squadron's call sign 'Spectre'.

Recent and planned upgrades

In 2007, Air Force Special Operations Command (AFSOC) initiated a program to upgrade the armament of AC-130s. The test program planned for the 25 mm GAU-12/U and 40 mm Bofors cannon on the AC-130U gunships to be replaced with two 30 mm Mk 44 Bushmaster II cannons. In 2007, the Air Force modified four AC-130U gunships as test platforms for the Bushmasters. These were referred to as AC-130U Plus 4 or AC-130U+4. AFSOC, however, canceled its plans to install the new cannons on its fleet of AC-130Us. It has since removed the guns and re-installed the original 40 mm and 25 mm cannons and returned the planes to combat duty. Brigadier General Bradley A. Heithold, AFSOC's director of plans, programs, requirements, and assessments, said on 11 August 2008 that the effort was canceled because of problems with the Bushmaster's accuracy in tests "at the altitude we were employing it". There were also schedule considerations that drove the decision, he said.

There were also plans to possibly replace the 105 mm cannon with a breech-loading 120 mm M120 mortar, and to give the AC-130 a standoff capability using either the AGM-114 Hellfire missile, the Advanced Precision Kill Weapon System (based on the Hydra 70 rocket), or the Viper Strike glide bomb.

In 2010, the Air Force awarded L-3 Communications a $61 million contract to add precision strike packages to eight MC-130W Combat Spear special-mission aircraft to give them a gunship-like attack capability, such-equipped MC-130Ws are known as Dragon Spears. Air Force Special Operations Command is arming these aircraft to relieve the high operational demands on AC-130 gunships until new AC-130Js enter service. The MC-130W Dragon Spear was renamed the AC-130W Stinger II in 2011.

The Air Force launched an initiative in 2011 to acquire 16 new gunships based on new-built MC-130J Combat Shadow II special operations tankers outfitted with a "precision strike package" to give them an attack capability, requesting $1.6 billion from Fiscal Year 2011 through 2015. This would increase the size of the gunship fleet to 33 aircraft, a net increase of eight after the planned retirement of eight aging AC-130Hs. The first aircraft would be bought in Fiscal 2012, followed by two in Fiscal 2013, five in Fiscal 2014, and the final eight in Fiscal 2015. The decision to retain the C-130 came after funding for 16 C-27Js was removed from the fiscal 2010 budget. The AC-130J will follow the path of the Dragon Spear program, along similar lines to the USMC Harvest HAWK program. On 9 January 2013, the Air Force began converting the first MC-130J Combat Shadow II into an AC-130J Ghostrider and delivered it to AFSOC on 29 July 2015. The first AC-130J is to enter service in 2017. The Air Force decided to add a 105 mm cannon to the AC-130J in addition to the 30 mm cannon and smart bombs because the shells are more accurate and cheaper than dropping SDBs. AFSOC is interested in adding a directed energy weapon to the AC-130J. Other potential additions include an airborne active denial system to perform crowd control, and deploying small unmanned aerial vehicles from the common launch tubes to provide remote video feed and coordinates to weapons operators through cloud cover.

Future

By 2018, AC-130 gunships will have been providing close air support for special operators for 50 years. Although the aircraft have been kept relevant through constant upgrades to their weaponry, sensor packages, and countermeasures, they are not expected to be survivable in future non-permissive environments due to their high signatures and low airspeeds. Military analysts, such as the Center for Strategic and Budgetary Assessments, have suggested that AFSOC invest in more advanced technologies to fill the role to operate in future contested combat zones, including a mix of low-cost disposable unmanned and stealthy strike aircraft.

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Design

Overview

The AC-130 is a heavily armed long-endurance aircraft carrying an array of anti-ground oriented weapons that are integrated with sophisticated sensors, navigation, and fire control systems. It is capable of delivering precision firepower or area-saturation fire over a target area over a long period of time, at night or in adverse weather. The sensor suite consists of a television sensor, infrared sensor, and radar. These sensors allow the gunship to visually or electronically identify friendly ground forces and targets in most weather conditions.

The AC-130U is equipped with the AN/APQ-180, a synthetic aperture radar for long-range target detection and identification. The gunship's navigational devices include inertial navigation systems and a Global Positioning System. The AC-130U employs technologies developed in the 1990s which allow it to attack two targets simultaneously. It has twice the munitions capacity of the AC-130H. Although the AC-130U conducts some operations in daylight, most of its combat missions are conducted at night. The AC-130H's unit cost is US$132.4 million, and the AC-130U's cost is US$190 million (fiscal 2001 dollars).

Upgrades

During the Vietnam era, the various AC-130 versions following the Pave Pronto modifications were equipped with a magnetic anomaly detector (MAD) system called the Black Crow (AN/ASD-5), a highly sensitive passive device with a phased-array antenna located in the left-front nose radome that could pick up localized deviations in Earth's magnetic field that is normally used to detect submerged submarines. The Black Crow system was slaved into the targeting computers of the AC-130A/E/H, enabling the detection of the unshielded ignition coils of North Vietnamese trucks hidden under dense jungle foliage, typical along the Ho Chi Minh trail. It could also detect hand-held transmitter signals of air controllers on the ground to identify and locate targets.

The PGM-38/U enhanced 25 mm high explosive incendiary (HEI) round was created to expand the AC-130U gunships' mission in standoff range and survivability for its 25 mm GAU-12/U gun system. This round is a combination of the existing PGU-25 HEI and a M758 fuze designated as FMU-151/B to meet the MIL-STD-1316. The FMU-151 has an improved arming delay with multi-sensitive range.

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Operational history

Vietnam War

The AC-130 gunship first arrived in South Vietnam on 21 September 1967 under the Gunship II program and began combat operations over Laos and South Vietnam that year. In June 1968, AC-130s were deployed to Tan Son Nhut AB near Saigon for support against the Tet Offensive. By 30 October 1968, enough AC-130 Gunship IIs arrived to form a squadron, the 16th Special Operations Squadron (SOS) of the 8th Tactical Fighter Wing (TFW), at Ubon Royal Thai Air Force Base, Thailand. It was at this time that the C-130A gunship was designated the AC-130A.

On 18 August 1968, an AC-130 gunship flying an armed reconnaissance mission in Vietnam's III Corps was diverted to support a Special Forces' Katum Camp. The ground commander quickly assessed the accurate fire and capabilities of this weapon system and called for fire on his own perimeter when the Viet Cong attempted to bridge the wire on the west side of his position.

By December 1968, most AC-130s flew under F-4 Phantom II escort (to protect the gunship against heavy and concentrated AAA fire) from the 497th Tactical Fighter Squadron, normally three Phantoms per Gunship. In late 1969, under the code name of "Surprise Package", 56-0490 arrived with solid-state laser-illuminated low-light-level-TV with a companion YAG laser designator, an improved forward looking infrared (FLIR) sensor, video recording for TV and FLIR, an inertial navigation system, and a prototype digital fire control computer. The remaining AC-130s were refitted with upgraded similar equipment in the summer of 1970, and then redeployed to Ubon RTAFB. On 25 October 1971, the first "Cadillac" gunship, the AC-130E arrived in Vietnam. On 17 February 1972, the first 105 mm cannon arrived for service with Spectre and was installed on Gunship 570. It was used from mid-February until the aircraft received battle damage to its right flap. The 105 was switched to Gunship 571 and was used until 30 March when the aircraft was shot down.

On 28 January 1973, the Vietnam peace accord went into effect, marking the end of Spectre operations in Vietnam. Spectre was still needed and active in the region, supporting operations in Laos and Cambodia. On 22 February 1973, American offensive operations in Laos ended and the gunships became totally committed to operations in the Cambodian conflict.

On 12 April 1975, the Khmer Rouge was threatening the capital of Phnom Penh and AC-130s were called on to help in Operation Eagle Pull, the final evacuation of American and allied officials from Phnom Penh before it fell to the communists. The AC-130 was also over Saigon on 30 April 1975 to protect the final evacuation in Operation Frequent Wind. Spectres were also called in when the SS Mayaguez was seized, on the open sea, by Khmer Rouge soldiers and sailors on 15 May 1975.

AC-130s destroyed more than 10,000 trucks and participated in many crucial close air support missions in Vietnam.

Six Spectres and 52 aircrew members were lost to enemy fire. On 24 May 1969, Spectre lost its first gunship.

Cold War and later action

With the conclusion of hostilities in Southeast Asia in the mid-1970s, the AC-130H became the sole gunship in the regular Air Force, home based at Hurlburt Field, Florida, while the AC-130A fleet was transferred to the Air Force Reserve's 919th Tactical Airlift Group (919 TAG) at Eglin AFB Auxiliary Field #3/Duke Field, Florida. With the transition to the AC-130A, the 919 TAG was then redesignated as the 919th Special Operations Group (919 SOG).

In the late 1970s, when the AC-130H fleet was first being modified for in-flight refueling capability, a demonstration mission was planned and flown from Hurlburt Field, Florida, non-stop, to conduct a 2-hour live-fire mission over Empire Firing Range in the Republic of Panama, then return home. This 13-hour mission with two in-flight refuelings from KC-135 tankers proved the validity of flying long-range missions outside the contiguous United States to attack targets then return to home base without intermediate stops.

AC-130s from both the 4th and 16th Special Operations Squadrons have been deployed in nearly every conflict the United States has been involved in, officially and unofficially, since the end of the Vietnam War.

In July 1979, AC-130H crews deployed to Howard Air Force Base, Panama, as a precaution against possible hostile actions against American personnel during the Nicaraguan Revolution. New time aloft and non-stop distance records were subsequently set by a 16th SOS 2-ship AC-130H formation flight that departed Hurlburt Field on 13 November 1979 and landed on 15 November at Andersen Air Force Base, Guam, a distance of 7,200 nautical miles (13,300 km) and 29 hours 43 minutes non-stop, refueling four times in-flight. Refueling support for the Guam deployment was provided by KC-135 crews from the 305th Air Refueling Wing from Grissom AFB, Indiana.

In November 1979, four AC-130H gunships flew nonstop from Hurlburt Field to Anderson AFB, Guam, because of the hostage situation at the Embassy in Iran. At Guam, AC-130H crews developed communications-out/lights-out refueling procedures for later employment by trial-and-error. This deployment with the 1 SOW/CC as Task Force commander was directed from the office of the CJCS for fear that Iranian militants could begin executing American Embassy personnel who had been taken hostage on 4 November. One early option considered AC-130H retaliatory punitive strikes deep within Iran. Later gunship flights exceeded the 1979 Hurlburt-to-Guam flight. Upon return in March 1980, the four planes soon found themselves in Egypt to support the ill-fated hostage rescue attempt.

During Operation Urgent Fury in Grenada in 1983, AC-130s suppressed enemy air defense systems and attacked ground forces enabling the assault of the Point Salines Airfield via airdrop and air-land of friendly forces. The AC-130 aircrew earned the Lieutenant General William H. Tunner Award for the mission.

The AC-130Hs of the 16th Special Operations Squadron unit maintained an ongoing rotation to Howard AB, Panama, monitoring activities in El Salvador and other Central American points of interest, with rules of engagement eventually permitting attacks on FMLN targets. This commitment of Maintainers and crews started in 1983 and lasted until 1990. The AC-130 is considered to have hastened the end of the Salvadoran Civil War in the 1980s. Crews flew undercover missions from Honduras and attacked guerrilla camps and concentrations.

AC-130s also had a primary role during the United States invasion of Panama (named Operation Just Cause) in 1989, when they destroyed Panama Defense Force headquarters and numerous command-and-control facilities, and provided close air support for US ground troops. Aircrews earned the Mackay Trophy for the most meritorious flight of the year, and the Tunner Award.

Gulf War and the 1990s

During the Gulf War of 1990-91 (Operations Desert Shield and Desert Storm), Regular Air Force and Air Force Reserve AC-130s provided close air support and force protection (air base defense) for ground forces, and battlefield interdiction. The primary interdiction targets were early warning/ground control intercept (EW/GCI) sites along the southern border of Iraq. The first gunship to enter the Battle of Khafji helped stop a southbound Iraqi armored column on 29 January 1991. One day later, three more gunships provided further aid to Marines participating in the operation. The gunships attacked Iraqi positions and columns moving south to reinforce their positions north of the city.

Despite the threat of surface-to-air missiles (SAMs) and increasing visibility during the early morning hours of 31 January 1991, one AC-130H, AF Serial No. 69-6567, call-sign Spirit 03, opted to stay to continue to protect the Marines. A lone Iraqi with a Strela-2 MANPADS shot Spirit 03 down, and all 14 crew members died.

The military has used AC-130 gunships during the humanitarian operations in Somalia (Operation Restore Hope and Operation United Shield) in 1992-93, Operation Uphold Democracy in Haiti in 1994. AC-130s took part in Operation Assured Response in Liberia in 1996 and in Operation Silver Wake in 1997, the evacuation of American non-combatants from Albania.

AC-130s took part in the NATO missions in Bosnia and Herzegovina and Kosovo during the 1990s.

The AC-130U gunship set a new record for the longest sustained flight by any C-130 on 22 and 23 October 1997, when two AC-130U gunships flew 36 hours nonstop from Hurlburt Field, Florida to Taegu Air Base (Daegu), South Korea, being refueled seven times in the air by KC-135 tankers. The two gunships took on 410,000 lb (186,000 kg) of fuel. Gunships also were part of the buildup of U.S. forces in 1998 to compel Iraq to allow UNSCOM weapons inspections.

War on Terror

The U.S. has used gunships with deployments to the War in Afghanistan (Operation Enduring Freedom - Afghanistan) (2001-2014), and Iraq War (Operation Iraqi Freedom) (2003-11).

AC-130 strikes were directed by special forces on known Taliban locations during the early days of the war in Afghanistan. U.S. Special Operations Forces are using the AC-130 to support its operations. The day after arriving in Afghanistan, the AC-130s attacked Taliban and Al-Qaeda forces near the city of Konduz and were directly responsible for the city's surrender the next day. On 26 November 2001, Spectres were called in to put down a rebellion at the prison fort of Qala-i-Janghi. The 16 SOS flew missions over Mazar-i-Sharif, Konduz, Kandahar, Shkin, Asadabad, Bagram, Baghran, Tora Bora, and virtually every other part of Afghanistan. The Spectre participated in countless operations within Afghanistan, performing on-call close air support and armed reconnaissance. In March 2002, three AC-130 Spectres provided 39 crucial combat missions in support of Operation Anaconda in Afghanistan. During the intense fighting, the planes expended more than 1,300 40 mm and 1,200 105 mm rounds.

Close air support was the main mission of the AC-130 in Iraq. Night after night, at least one AC-130 was in the air to fulfill one or more air support requests (ASRs). A typical mission had the AC-130 supporting a single brigade's ASRs followed by aerial refueling and another 2 hours with another brigade or SOF team. The use of AC-130s in places like Fallujah, urban settings where insurgents were among crowded populations of non combatants, was criticized by human rights groups. AC-130s were also used for intelligence gathering with their sophisticated long-range video, infrared and radar sensors.

In 2007, US Special Operations forces also used the AC-130 in attacks on suspected al-Qaeda militants in Somalia.

There are eight AC-130H and seventeen AC-130U aircraft in active-duty service as of July 2010.

In March 2011, the U.S. Air Force deployed two AC-130U gunships to take part in Operation Odyssey Dawn, the U.S. military intervention in Libya, which eventually came under NATO as Operation Unified Protector.

By September 2013, 14 MC-130W Dragon Spear aircraft have been converted to AC-130W Stinger II gunships. The Stinger gunships have been deployed to Afghanistan to replace the aging AC-130H aircraft and provide an example for the new AC-130J Ghostrider. Modifications began with crews cutting holes in the plane to make room for weapons, and adding kits and bomb bases for laser-guided munitions. Crews added a 105 mm cannon, 20-inch infrared and electro-optical sensors, and the ability to carry 250-pound bombs on the wings.

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Variants

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Operators

United States Air Force

• 1st Special Operations Wing - Hurlburt Field, Florida

• 27th Special Operations Wing - Cannon AFB, New Mexico

Air Force Materiel Command

• 46th Test Wing - Eglin AFB, Florida

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Aircraft on display

One of the first seven AC-130A aircraft deployed to Vietnam was AF serial no. 53-3129, named First Lady in November 1970. This aircraft was a conversion of the first production C-130. On 25 March 1971, it took an anti-aircraft artillery hit in the belly just aft of the nose gear wheel well over the Ho Chi Minh trail in Laos. The 37 mm shell destroyed everything below the crew deck and barely missed striking two crew members. The pilot was able to crash land the aircraft safely. In 1975, after the conclusion of US involvement in the Vietnam war, it was transferred to the Air Force Reserve, where it served with the 711th Special Operations Squadron of the 919th Special Operations Wing. In 1980, the aircraft was upgraded from the original three-bladed propellers to the quieter four-bladed propellers and was eventually retired in late 1995. The retirement also marked an end to the Air Force Reserve Command flying the AC-130A. The aircraft now sits on display in the final Air Force Reserve Command configuration with grey paint, black markings, and the four-bladed Hamilton Sunstrand 54H60-91 props at the Air Force Armament Museum at Eglin Air Force Base, Florida, USA.

A second AC-130A, AF serial no. 56-0509, named the Ultimate End, was accepted by the Air Force on 28 February 1957, and modified to the AC-130A configuration on 27 July 1970. The aircraft participated in the Vietnam War and the rescue of the SS Mayaguez. Ultimate End demonstrated the durability of the C-130 after surviving hits in five places by 37 mm anti-aircraft artillery on 12 December 1970, extensive left wing leading edge damage on 12 April 1971 and a 57 mm round damaging the belly and injuring one crewman on 4 March 1972. "Ultimate End" was reassigned to the Air Force Reserve's 919th Special Operations Wing at Eglin AFB Auxiliary Field No.3 / Duke Field on 17 June 1975, where it continued in service until retired in the fall 1994 and transferred to Air Force Special Operations Command's Heritage Air Park at Hurlburt Field, Florida. While assigned to the 711th Special Operations Squadron, Ultimate End served in Operations JUST CAUSE in Panama, DESERT STORM in Kuwait and Iraq, and UPHOLD DEMOCRACY in Haiti. After 36 years and seven months of service, 24 years as a gunship, Ultimate End retired from active service on 1 October 1994. It made its last flight from Duke Field to Hurlburt Field on 20 October 1994. The Spectre Association dedicated "Ultimate End" (which served with the 16 SOS in Vietnam) on 4 May 1995. Lt Col Michael Byers, then 16 SOS commander, represented the active-duty gunship force and Clyde Gowdy of the Spectre Association represented all Spectre personnel past and present for the unveiling of a monument at the aircraft and the dedication as a whole.

A third AC-130A, AF serial no. 54-1630, is on display in the Cold War Gallery at the National Museum of the United States Air Force at Wright-Patterson AFB, Ohio. Named Azrael for the angel of death in Islam who severs the soul from the body. This aircraft figured prominently in the closing hours of Operation Desert Storm. On 26 February 1991, Coalition ground forces were driving the Iraqi Army out of Kuwait. With an Air Force Reserve crew called to active duty, Azrael was sent to the Al Jahra highway (Highway 80) between Kuwait City and Basra, Iraq, to intercept the convoys of tanks, trucks, buses, and cars fleeing the battle. Facing SA-6 and SA-8 surface-to-air missiles and 37 mm and 57 mm radar-guided anti-aircraft artillery the crew attacked and destroyed or disabled most of the convoys. Azrael was also assigned to the 919th Special Operations Wing and retired to the museum in October 1995.

Another AC-130A, AF serial no. 54-1626, the original prototype AC-130 named "Gunship II" is on display at the outdoor Air Park at the National Museum of the United States Air Force at Wright-Patterson AFB, Ohio. This aircraft served in Southeast Asia from 1967 to 1972, then served in JC-130A test configuration. It was transferred to the National Museum of the United States Air Force in 1976, and converted back to AC-130A configuration in the late 1990s.

AC-130A serial no. 54-1623, c/n 3010, named "Ghost Rider" served in Southeast Asia and later conflicts until being retired in 1997 to Dobbins AFB, Georgia. Ghost Rider eventually was transferred and displayed at the Lockheed Museum at Marietta, Georgia.

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Specifications

Data from USAF Fact Sheet

General characteristics

• Crew: 13
  • Officers: 5 (pilot, copilot, navigator, fire control officer, electronic warfare officer)
  • Enlisted: 8 (flight engineer, TV operator, infrared detection set operator, loadmaster, four aerial gunners)
• Length: 97 ft 9 in (29.8 m)
• Wingspan: 132 ft 7 in (40.4 m)
• Height: 38 ft 6 in (11.7 m)
• Wing area: 1745.5 ft² (162.2 m²)
• Loaded weight: 122,400 lb (55,520 kg)
• Max. takeoff weight: 155,000 lb (69,750 kg)
• Powerplant: 4 × Allison T56-A-15 turboprops, 4,910 shp (3,700 kW) each

Performance

• Maximum speed: 260 knots (300 mph, 480 km/h)
• Range: 2,200 nm (2,530 mi, 4,070 km)
• Service ceiling: 30,000 ft (9,100 m)

Armament

• 4× 7.62 mm GAU-2/A miniguns
• 4× 20 mm (0.787 in) M61 Vulcan 6-barrel Gatling cannon

• 2× 7.62 mm GAU-2/A miniguns
• 2× 20 mm M61 Vulcan cannon
• 2× 40 mm (1.58 in) L/60 Bofors cannon

• 2× 20 mm M61 Vulcan cannon
• 1× 40 mm (1.58 in) L/60 Bofors cannon
• 1× 105 mm (4.13 in) M102 howitzer

(Prior to c. 2000)

• 2× 20 mm M61 Vulcan cannon
• 1× 40 mm (1.58 in) L/60 Bofors cannon
• 1× 105 mm (4.13 in) M102 howitzer

(Current Armament)

• 1× 40 mm (1.58 in) L/60 Bofors cannon
• 1× 105 mm (4.13 in) M102 howitzer

• 1× General Dynamics 25 mm (0.984 in) GAU-12/U Equalizer 5-barreled Gatling cannon
• 1× 40 mm (1.58 in) L/60 Bofors cannon
• 1× 105 mm (4.13 in) M102 howitzer

• 1x 30 mm ATK GAU-23/A autocannon
• 1x 105 mm M102 Howitzer (AC-130J Ghostrider only, fired out the back of the aircraft via a modified rear ramp.)
• 'Gunslinger' weapons system with launch tube for AGM-176 Griffin missiles and/or GBU-44/B Viper Strike munitions (10 round magazines)
• Wing mounted, AGM-114 Hellfire missiles, GBU-39 Small Diameter Bombs (SDBs) and/or GBU-53/B SDB IIs (4 per hardpoint on BRU-61/A rack)

Avionics

• Mission systems:
  • Northrop Grumman AN/APN-241 multimode navigation radar - derived version of AN/APG-66 radar (formerly used on F-16A Fighting Falcon) consisting of precised navigation and air-to-ground modes including Monopulse Ground Mapping (MGM), Doppler Beam Sharpening (DBS), high resolution Synthetic Aperture Radar (SAR), Terrain Avoidance/Terrain Following (TA/TF), skin paint (for Station KEeping; SKE), maritime detection, weather/turbulence detection, wind shear alert, and ballistic wind measurement (for precision airdrop)
  • Motorola (now General Dynamics) AN/APQ-150 Beacon Tracking Radar (BTR) - side-looking radar designed to search, acquire, and track ground beacon signal (X-band transponder) located at a friendly position from 10 nautical miles, beacon coordinate is used as a reference point for ground troop to give the gunship a bearing and range from the beacon to the desired target (mounted between 40 mm cannon and 105 mm howitzer)
  • Cubic Corporation AN/ARS-6 Personnel Locator System (PLS) - radio navigation set
  • Raytheon AN/AAQ-26 Infrared Detecting Set (IDS) - long-wave infrared (LWIR) band Forward Looking Infrared (FLIR) (mounted forward of the nose landing gear door)
  • General Electric (now Lockheed Martin) AN/ASQ-145 Low Light Level Television (LLLTV) - EO fire control system consists of television camera (CCD-TV), AN/AVQ-19 Laser Target Designator/Ranger (LTD/R - 1064 nm laser emitter with permanently preset PRF code) with eyesafe mode (1570 nm laser emitter), AN/AAT-3 Ambient Temperature Illuminator (ATI - wide beam 860 nm laser illuminator), and Infrared Zoom Laser Illuminator Designator (IZLID - airborne version of 860 nm narrow beam laser pointer/marker and illuminator AN/PEQ-18) (mounted in the crew entrance door)
• Navigation systems:
  • Teledyne Ryan (now Northrop Grumman) AN/APN-218 radar - doppler navigation radar
• Previously installed systems:
  • AN/APN-59 radar - search and weather radar

• Mission systems:
  • Raytheon AN/APQ-180 multimode attack radar - enhanced version of AN/APG-70 radar (used on F-15E Strike Eagle) incorporating several enhanced air-to-ground modes such as fixed target track, ground moving target indication and track, projectile impact point position, beacon track, and a weather detection
  • Raytheon AN/AAQ-26 IDS - LWIR FLIR (mounted on port side of the nose landing gear door)
  • Lockheed Martin AN/AAQ-39 Gunship Multispectral Sensor System (GMS2) - EO/IR fire control system consists of mid-wave infrared (MWIR) FLIR, two Image-Intensified Television (I2TV) cameras (CCD-TV), laser target designator/rangefinder with eyesafe mode (1064 and 1570 nm dual mode laser emitter), and near-infrared (NIR) laser pointer/marker (860 nm laser emitter) (mounted under the nose of port landing gear sponson)
• Previously installed systems:
  • GEC-Marconi All Light Level Television (ALLTV) - EO fire control systems consists of CCD-TV, Laser Target Designator/Range Finder (LTD/RF - 1064 nm laser emitter with in-flight programmable PRF code) with eyesafe mode (1570 nm laser emitter), and Laser Illuminator Assembly (LIA - 860 nm laser emitter)
• Countermeasures:
  • Raytheon AN/ALR-69 - digital Radar warning receiver (RWR)
  • L-3 Communications AN/AAR-44 - UV-based Missile Approach Warning System (MAWS)
  • ITT Exelis AN/ALQ-172 - Digital radio frequency memory (DRFM) jammer-based Electronic countermeasure (ECM) incorporating integrated Electronic Warfare (EW) self-protection function of detection, processing, warning, prioritization, jamming, and threat display
  • BAE Systems AN/ALQ-196 Low-Band Jammer (LBJ) - low frequency DRFM jammer-based ECM
  • Northrop Grumman AN/AAQ-24 Nemesis - laser-based Directional Infrared Counter Measures (DIRCM) (mounted on the port and starboard rear fuselage)
  • BAE Systems AN/ALE-47 Countermeasure Dispensing System (CMDS) - chaff/flare dispenser

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