McDonnell Douglas F/A-18 Hornet

YF-16 and YF-17 prototypes being tested by the U.S. Air Force

The U.S. Navy started the Naval Fighter-Attack, Experimental (VFAX) program to procure a multirole aircraft to replace the Douglas A-4 Skyhawk, the A-7 Corsair II, and the remaining McDonnell Douglas F-4 Phantom IIs, and to complement the F-14 Tomcat. Vice Admiral Kent Lee, then head of Naval Air Systems Command, was the lead advocate for the VFAX against strong opposition from many Navy officers, including Vice Admiral William D. Houser, deputy chief of naval operations for air warfare – the highest-ranking naval aviator.[2]

In August 1973, Congress mandated that the Navy pursue a lower-cost alternative to the F-14. Grumman proposed a stripped F-14 designated the F-14X, while McDonnell Douglas proposed a naval variant of the F-15, but both were nearly as expensive as the F-14.[3] That summer, Secretary of Defense James R. Schlesinger ordered the Navy to evaluate the competitors in the Air Force's Lightweight Fighter (LWF) program, the General Dynamics YF-16 and Northrop YF-17.[4] The Air Force competition specified a day fighter with no strike capability. In May 1974, the House Armed Services Committee redirected $34 million from the VFAX to a new program, the Navy Air Combat Fighter (NACF),[4] intended to make maximum use of the technology developed for the LWF program.[3]

Though the YF-16 won the LWF competition, the Navy was skeptical that an aircraft with one engine and narrow landing gear could be easily or economically adapted to carrier service, and refused to adopt an F-16 derivative. On 2 May 1975, the Navy announced its selection of the YF-17.[5] Since the LWF did not share the design requirements of the VFAX, the Navy asked McDonnell Douglas and Northrop to develop a new aircraft from the design and principles of the YF-17. On 1 March 1977, Secretary of the Navy W. Graham Claytor announced that the F-18 would be named "Hornet".[3]

The Northrop YF-17 Cobra was developed into the carrier-capable F/A-18.

Northrop had partnered with McDonnell Douglas as a secondary contractor on NACF to capitalize on the latter's experience in building carrier aircraft, including the widely used F-4 Phantom II. On the F-18, the two companies agreed to evenly split component manufacturing, with McDonnell Douglas conducting final assembly. McDonnell Douglas would build the wings, stabilators, and forward fuselage; while Northrop would build the center and aft fuselage and vertical stabilizers. McDonnell Douglas was the prime contractor for the naval versions, and Northrop would be the prime contractor for the F-18L land-based version which Northrop hoped to sell on the export market.[3][4]

The F-18, initially known as McDonnell Douglas Model 267, was drastically modified from the YF-17. For carrier operations, the airframe, undercarriage, and tailhook were strengthened, folding wings and catapult attachments were added, and the landing gear was widened.[6] To meet Navy range and reserves requirements, McDonnell increased fuel capacity by 4,460 pounds (2,020 kg), by enlarging the dorsal spine and adding a 96-gallon fuel tank to each wing. A "snag" was added to the wing's leading edge and stabilators to prevent an aeroelastic flutter discovered in the F-15 stabilator. The wings and stabilators were enlarged, the aft fuselage widened by 4 inches (102 mm), and the engines canted outward at the front. These changes added 10,000 lb (4,540 kg) to the gross weight, bringing it to 37,000 lb (16,800 kg). The YF-17's control system was replaced with a fully digital fly-by-wire system with quadruple redundancy, the first to be installed in a production fighter.[6]

The first preproduction F-18A on display in October 1978

Originally, plans were to acquire a total of 780 aircraft of three variants: the single-seat F-18A fighter and A-18A attack aircraft, differing only in avionics, and the dual-seat TF-18A, which retained full mission capability of the F-18 with a reduced fuel load.[7] Following improvements in avionics and multifunction displays, and a redesign of external stores stations, the A-18A and F-18A were able to be combined into one aircraft.[3] Starting in 1980, the aircraft began to be referred to as the F/A-18A, and the designation was officially announced on 1 April 1984. The TF-18A was redesignated F/A-18B.[3]

Northrop developed the F-18L as a potential export aircraft. Since it was not strengthened for carrier service, it was expected to be lighter and better performing, and a strong competitor to the F-16 Fighting Falcon then being offered to American allies. The F-18L's normal gross weight was lighter than the F/A-18A by 7,700 pounds (3,490 kg), via lighter landing gear, lack of wing folding mechanism, reduced part thickness in areas, and lower fuel-carrying capacity. Though the aircraft retained a lightened tailhook, the most obvious external difference was removed "snags" on the leading edge of the wings and stabilators. It still retained 71% commonality with the F/A-18 by parts weight, and 90% of the high-value systems, including the avionics, radar, and electronic countermeasure suite, though alternatives were offered. Unlike the F/A-18, the F-18L carried no fuel in its wings and lacked weapons stations on the intakes. It had three underwing pylons on each side, instead.[8]

The F/A-18L version followed to coincide with the US Navy's F/A-18A as a land-based export alternative. This was essentially an F/A-18A lightened by about 2,500 to 3,000 pounds (1,130 to 1,360 kg); weight was reduced by removing the folding wing and associated actuators, implementing a simpler landing gear (single wheel nose gear and cantilever oleo main gear), and changing to a land-based tail hook. The revised F/A-18L included wing fuel tanks and fuselage stations of the F/A-18A. Its weapons capacity would increase from 13,700 to 20,000 pounds (6,210 to 9,070 kg), largely due to the addition of a third underwing pylon and strengthened wingtips (11 stations in total vs 9 stations of the F/A-18A). Compared to the F-18L, the outboard weapons pylons are closer to the wingtip missile rails. Because of the strengthened nonfolding wing, the wingtip missile rails were designed to carry either the AIM-7 Sparrow or Skyflash medium-range air-to-air missiles, in addition to the AIM-9 Sidewinder as found on the F/A-18A. The F/A-18L was strengthened for a 9 g design load factor compared to the F/A-18A's 7.5 g factor.[9]

The partnership between McDonnell Douglas and Northrop soured over competition for foreign sales for the two models. Northrop felt that McDonnell Douglas would put the F/A-18 in direct competition with the F-18L. In October 1979, Northrop filed a series of lawsuits charging that McDonnell was using Northrop technology developed for the F-18L for foreign sales of the F/A-18 in violation of their agreement, and asked for a moratorium on foreign sales of the Hornet. McDonnell Douglas countersued, alleging Northrop illegally used F/A-18 technology in its F-20 Tigershark. A settlement was announced 8 April 1985 for all of the lawsuits.[10][11][12][13] McDonnell Douglas paid Northrop $50 million for "rights to sell the F/A-18 wherever it could".[13] Additionally, the companies agreed on McDonnell Douglas as the prime contractor with Northrop as the principal subcontractor.[10][11][12][13] As principal subcontractor, Northrop will produce the rear section for the F/A-18 (A/B/C/D/E/F), while McDonnell Douglas will produce the rest with final assembly to be performed by McDonnell Douglas.[14] At the time of the settlement, Northrop had ceased work on the F-18L. Most export orders for the F-18L were captured by the F-16 or the F/A-18.[8] The F-20 Tigershark did not enter production, and although the program was not officially terminated until 17 November 1986, it was dead by mid-1985.[15]

A US Navy F/A-18C on a mission during Operation Enduring Freedom in 2002

During flight testing, the snag on the leading edge of the stabilators was filled in, and the gap between the leading-edge extensions (LEX) and the fuselage was mostly filled in. The gaps, called the boundary layer air discharge slots, controlled the vortices generated by the LEX and presented clean air to the vertical stabilizers at high angles of attack, but they also generated a great deal of parasitic drag, worsening the problem of the F/A-18's inadequate range. McDonnell filled in 80% of the gap, leaving a small slot to bleed air from the engine intake. This may have contributed to early problems with fatigue cracks appearing on the vertical stabilizers due to extreme structural loads, resulting in a short grounding in 1984 until the stabilizers were strengthened. Starting in May 1988, a small vertical fence was added to the top of each LEX to broaden the vortices and direct them away from the vertical stabilizers. This also provided a minor increase in controllability as a side effect.[16] F/A-18s of early versions had a problem with insufficient rate of roll, exacerbated by the insufficient wing stiffness, especially with heavy underwing ordnance loads. The first production F/A-18A flew on 12 April 1980. After a production run of 380 F/A-18As[17] (including the nine assigned to flight systems development), manufacture shifted to the F/A-18C in September 1987.[7]

In the 1990s, the U.S. Navy faced the need to replace its aging A-6 Intruders and A-7 Corsair IIs with no replacement in development.[18] To answer this deficiency, the Navy commissioned development of the F/A-18E/F Super Hornet. Despite its designation, it is not just an upgrade of the F/A-18 Hornet, but rather, a new, larger airframe using the design concepts of the Hornet.

Hornets and Super Hornets will serve complementary roles in the U.S. Navy carrier fleet until the Hornet A-D models are completely replaced by the F-35C Lightning II. The Marines have chosen to extend the use of certain F/A-18s up to 10,000 flight hours, due to delays in the F-35B variant.[19]

F/A-18 Hornets on the flight deck of the supercarrier USS Harry S. Truman

McDonnell Douglas rolled out the first F/A-18A on 13 September 1978,[17] in blue-on-white colors marked with "Navy" on the left and "Marines" on the right. Its first flight was on 18 November.[17] In a break with tradition, the Navy pioneered the "principal site concept"[4] with the F/A-18, where almost all testing was done at Naval Air Station Patuxent River,[7] instead of near the site of manufacture, and using Navy and Marine Corps test pilots instead of civilians early in development. In March 1979, Lt. Cdr. John Padgett became the first Navy pilot to fly the F/A-18.[25]

An F/A-18 inverted above an F-14

Following trials and operational testing by VX-4 and VX-5, Hornets began to fill the Fleet Replacement Squadrons VFA-125, VFA-106, and VMFAT-101, where pilots are introduced to the F/A-18. The Hornet entered operational service with Marine Corps squadron VMFA-314 at MCAS El Toro on 7 January 1983,[17] and with Navy squadron VFA-25 on 1 July 1984, replacing F-4s and A-7Es, respectively.[7]

Navy strike-fighter squadrons VFA-25 and VFA-113 (assigned to CVW-14) deployed aboard USS Constellation from February to August 1985, marking the first deployment for the F/A-18.[26]

The initial fleet reports were complimentary, indicating that the Hornet was extraordinarily reliable, a major change from its predecessor, the F-4J.[27] Other squadrons that switched to F/A-18 are VFA-146 "Blue Diamonds", and VFA-147 "Argonauts". In January 1985, the VFA-131 "Wildcats" and the VFA-132 "Privateers" moved from Naval Air Station Lemoore, California to Naval Air Station Cecil Field, Florida to become the Atlantic Fleet's first F/A-18 squadrons.

The Blue Angels' No. 6 F/A-18A

The U.S. Navy's Blue Angels Flight Demonstration Squadron switched to the F/A-18 Hornet in 1986,[17][28] replacing the A-4 Skyhawk. The Blue Angels performed in F/A-18A, B, C, and D models at air shows and other special events across the US and worldwide before transitioning[29] to the F/A-18E/F Super Hornet in late 2020.[29] Blue Angels pilots must have 1,400 hours and an aircraft-carrier certification. The two-seat B and D models were typically used to give rides to VIPs, but also filled in for other aircraft, if such a need arose.[30]

NASA operates several F/A-18 aircraft for research purposes and also as chase aircraft; these F/A-18s are based at the Armstrong Flight Research Center (formerly the Dryden Flight Research Center) in California.[31] On 21 September 2012, two NASA F/A-18s escorted a NASA Boeing 747 Shuttle Carrier Aircraft carrying the Space Shuttle Endeavour over portions of California to Los Angeles International Airport before being delivered to the California Science Center museum in Los Angeles.[32]

An F/A-18C Hornet lands on the flight deck of the aircraft carrier USS George H.W. Bush

The F/A-18 first saw combat action in April 1986, when VFA-131, VFA-132, VMFA-314, and VMFA-323 Hornets from USS Coral Sea flew Suppression of Enemy Air Defense (SEAD) missions against Libyan air defenses during Operation Prairie Fire and an attack on Benghazi as part of Operation El Dorado Canyon.[33] During the Gulf War of 1991, the Navy deployed 106 F/A-18A/C Hornets and Marine Corps deployed 84 F/A-18A/C/D Hornets.[34] F/A-18 pilots were credited with two kills during the Gulf War, both MiG-21s.[35] On 17 January, the first day of the war, U.S. Navy pilots Lieutenant Commander Mark I. Fox and, Lieutenant Nick Mongilio were in a flight of four Hornets[36][37] when they were sent from USS Saratoga in the Red Sea to bomb airfield H-3 in southwestern Iraq.[38] While en route, they were warned by an E-2C of approaching "Bandits" or Iranian MiG-21 aircraft. The Hornets shot down the two MiGs with AIM-7 and AIM-9 missiles in a brief dogfight. It took 40 seconds from when the bandits appeared on the radar of the E-2 until both aircraft were shot down.[37] The F/A-18s, each carrying four 2,000 lb (910 kg) bombs, then resumed their bombing run before returning to Saratoga.[17][39]

The Hornet's survivability was demonstrated when a Hornet took hits in both engines and flew 125 mi (201 km) back to base. It was repaired and flying within a few days. F/A-18s flew 4,551 sorties with 10 Hornets damaged including three losses, one confirmed lost to enemy fire.[40] All three losses were U.S. Navy F/A-18s, with two of their pilots lost. On 17 January 1991, Lieutenant Commander Scott Speicher of VFA-81 was shot down and killed in the crash of his aircraft.[41] An unclassified summary of a 2001 CIA report suggests that Speicher's aircraft was shot down by a missile fired from an Iraqi Air Force aircraft,[42][43] most likely a MiG-25.[44]

On 24 January 1991, F/A-18A bureau number 163121, from USS Theodore Roosevelt, piloted by Lt H.E. Overs, was lost due to an engine failure or loss of control over the Persian Gulf. The pilot ejected and was recovered by USS Wisconsin.[45] On 5 February 1991, F/A-18A bureau number 163096, piloted by Lieutenant Robert Dwyer was lost over the North Persian Gulf after a successful mission to Iraq; he was officially listed as killed in action, body not recovered.

An F/A-18C taking off from USS Kitty Hawk in 2005

As the A-6 Intruder was retired in the 1990s, its role was filled by the F/A-18. The F/A-18 demonstrated its versatility and reliability during Operation Desert Storm, shooting down enemy fighters and subsequently bombing enemy targets with the same aircraft on the same mission. It broke records for tactical aircraft in availability, reliability, and maintainability.

Both U.S. Navy F/A-18A/C models and Marine F/A-18A/C/D models were used continuously in Operation Southern Watch and over Bosnia and Kosovo in the 1990s. U.S. Navy Hornets flew during Operation Enduring Freedom in 2001 from carriers operating in the North Arabian Sea. Both the F/A-18A/C and newer F/A-18E/F variants were used during Operation Iraqi Freedom in 2003, operating from aircraft carriers as well from an air base in Kuwait. Later in the conflict USMC A+, C, and primarily D models operated from bases within Iraq.

An F/A-18C was accidentally downed in a friendly fire incident by a Patriot missile when a pilot tried to evade two missiles fired at his plane and crashed.[46] Two others collided over Iraq in May 2005.

The USMC plans to use the F/A-18 until the early 2030s.[47][48]

The last operational deployment of the F/A-18C Hornet in U.S. Navy service was aboard the USS Carl Vinson and ended on 12 March 2018.[49] The aircraft briefly went back to sea for routine carrier qualifications in October, but it was retired from active Navy service on 1 February 2019. The type continued to be used by reserve units, primarily for adversary training,[50] but the final Navy F/A-18C operational flight occurred on 2 October 2019.[51]

The F/A-18 has been purchased and is in operation with several foreign air services. Export Hornets are typically similar to U.S. models of a similar manufacture date. Since none of the customers operate aircraft carriers, all export models have been sold without the automatic carrier landing system, and the Royal Australian Air Force further removed the catapult attachment on the nose gear.[27] Except for Canada, all export customers purchased their Hornets through the U.S. Navy, via the U.S. Foreign Military Sales program, where the Navy acts as the purchasing manager, but incurs no financial gain or loss. Canada is the largest Hornet operator outside of the U.S.

Three RAAF F/A-18As in 2013

The Royal Australian Air Force purchased 57 F/A-18A fighters and 18 F/A-18B two-seat trainers to replace its Dassault Mirage IIIOs.[52][53] Numerous options were considered for the replacement, notably the F-15A Eagle, the F-16 Falcon, and the then new F/A-18 Hornet.[54] The F-15 was discounted because the version offered had no ground-attack capability. The F-16 was considered unsuitable largely due to having only one engine.[55] Australia selected the F/A-18 in October 1981.[53] Original differences between the Australian and US Navy's standard F/A-18 were the removed nose-wheel tie bar for catapult launch (later re-fitted with a dummy version to remove nose wheel shimmy), addition of a high frequency radio, an Australian fatigue data analysis system, an improved video and voice recorder, and the use of instrument landing system/VHF omnidirectional range instead of the carrier landing system.[55]

The first two aircraft were produced in the US, with the remainder assembled in Australia at Government Aircraft Factories. F/A-18 deliveries to the RAAF began on 29 October 1984, and continued until May 1990.[56] In 2001, Australia deployed four aircraft to Diego Garcia, in an air-defense role, during coalition operations against the Taliban in Afghanistan. In 2003, 75 Squadron deployed 14 F/A-18s to Qatar as part of Operation Falconer and these aircraft saw action during the invasion of Iraq.[57] Australia had 71 Hornets in service in 2006, after four were lost to crashes.[52]

The fleet was upgraded beginning in the late 1990s to extend their service lives to 2015.[58] They were expected to be retired then and replaced by the F-35 Lightning II.[59][60] Several of the Australian Hornets have had refits applied to extend their service lives until the planned retirement date of 2020.[61] Australia has also purchased 24 F/A-18F Super Hornets, with deliveries beginning in 2010.[62]

In March 2015, six F/A-18As from No. 75 Squadron were deployed to the Middle East as part of Operation Okra, replacing a detachment of Super Hornets.[63]

Australia has sold 25 F/A-18A/Bs to Canada with first two delivered to RCAF in February 2019.[64]

Canadian CF-18A Hornet off the coast of Hawaii. Note the "false cockpit" painted on the underside of the aircraft, intended to confuse enemy pilots during dogfights.

Canada was the first export customer for the Hornet, replacing the CF-104 Starfighter (air reconnaissance and strike), the McDonnell CF-101 Voodoo (air interception) and the CF-116 Freedom Fighter (ground attack). The Canadian Forces Air Command ordered 98 A models (Canadian designation CF-188A/CF-18A) and 40 B models (designation CF-188B/CF-18B). The original CF-18 as delivered was nearly identical to the F/A-18A and B models.[65][66] Many features that made the F/A-18 suitable for naval carrier operations were retained by the Canadian Forces, such as the robust landing gear, the arrestor hook, and wing folding mechanisms.[67]

In 1991, Canada committed 26 CF-18s to the Gulf War, based in Qatar. These aircraft primarily provided Combat Air Patrol duties, although, late in the air war, began to perform air strikes on Iraqi ground targets. On 30 January 1991, two CF-18s on CAP detected and attacked an Iraqi TNC-45 patrol boat. The vessel was repeatedly strafed and damaged by 20mm cannon fire, but an attempt to sink the ship with an air-to-air missile failed. The ship was subsequently sunk by American aircraft, but the Canadian CF-18s received partial credit for its destruction.[68] In June 1999, 18 CF-18s were deployed to Aviano AB, Italy, where they participated in both the air-to-ground and air-to-air roles in the former Yugoslavia.

62 CF-18A and 18 CF-18B aircraft took part in the Incremental Modernization Project which was completed in two phases. The program was launched in 2001 and the last updated aircraft was delivered in March 2010. The aims were to improve air-to-air and air-to-ground combat abilities, upgrade sensors and the defensive suite, and replace the datalinks and communications systems on board the CF-18 from the F/A-18A and F/A-18B standard to the current F/A-18C and F/A-18D standard.[65][69]

In July 2010 the Canadian government announced plans to replace the remaining CF-18 fleet with 65 F-35 Lightning IIs, with deliveries scheduled to start in 2016.[70] In November 2016, Canada announced plans to buy 18 Super Hornets as an interim solution while reviewing its F-35 order.[71] The plan for Super Hornets was later, in October 2017, put on hold due to a trade conflict with the United States over the Bombardier C-Series. Instead, Canada was seeking to purchase surplus Hornets from Australia or Kuwait.[72][73][74] Canada has since acquired 25 ex-Australian F/A-18A/Bs, the first two of which were delivered in February 2019.[75] 18 of these airframes will be introduced into active service with the remaining 7 to be used for spare parts and testing.[76]

A Finnish Air Force F-18C at RIAT 2005

The Finnish Air Force ordered 64 F-18C/Ds (57 C models, seven D models). All F-18D were built at St Louis, and then all F-18C were assembled in Finland. Delivery of the aircraft started in November 1995 and ended in August 2000.[77] The Hornet replaced the MiG-21bis and Saab 35 Draken in Finnish service. The Finnish Hornets were initially to be used only for air defense, hence the F-18 designation. The F-18C includes the ASPJ (Airborne-Self-Protection-Jammer) jamming pod ALQ-165.[78] The US Navy later included the ALQ-165 on their F/A-18E/F Super Hornet procurement.

One fighter was destroyed in a mid-air collision in 2001. A damaged F-18C, nicknamed "Frankenhornet", was rebuilt into a F-18D using the forward section of a Canadian CF-18B that was purchased.[79][80] The modified fighter crashed during a test flight in January 2010,[80][81] due to a faulty tailplane servo cylinder.[82]

Finland is upgrading its fleet of F-18s with new avionics, including helmet mounted sights (HMS), new cockpit displays, sensors and standard NATO data link. Several of the remaining Hornets are going to be fitted to carry air-to-ground ordnance such as the AGM-158 JASSM, in effect returning to the original F/A-18 multi-role configuration. The upgrade includes also the procurement and integration of new AIM-9X Sidewinder and AIM-120C-7 AMRAAM air-to-air missiles. This Mid-Life Upgrade (MLU) is estimated to cost between €1–1.6 billion and work is scheduled to be finished by 2016. After the upgrades the aircraft are to remain in active service until 2020–2025.[83][84] In October 2014 the Finnish broadcaster Yle announced that consideration was being given to the replacement of the Hornet.[85]

Over half of the fleet was upgraded by 1 June 2015. During that week the Finnish Air Force was to drop its first live bombs (JDAM) in 70 years, since World War II.[86]

An F/A-18 of the Kuwaiti Air Force

The Kuwait Air Force (Al Quwwat Aj Jawwaiya Al Kuwaitiya) ordered 32 F/A-18C and eight F/A-18D Hornets in 1988. Delivery started in October 1991 until August 1993.[87][88] The F/A-18C/Ds replaced A-4KU Skyhawk. Kuwait Air Force Hornets have flown missions over Iraq during Operation Southern Watch in the 1990s. They have also participated in military exercises with the air forces of other Gulf nations.[89] Kuwait had 39 F/A-18C/D Hornets in service in 2008.[90] Kuwait also participated in the Yemeni Civil War (2015–present). In February 2017, the Commander of the Kuwait Air Force revealed that the F/A-18s based at King Khalid Air Base had performed approximately 3,000 sorties over Yemen.[91][92]

RMAF F/A-18D returning to base after a national day flypast

The Royal Malaysian Air Force (Tentera Udara Diraja Malaysia) has eight F/A-18Ds.[93] Delivery of the aircraft spanned from March 1997 to August 1997.[77]

Three Hornets together with five UK-made BAE Hawk 208 were deployed in a bombing airstrike on the "Royal Security Forces of the Sultanate of Sulu and North Borneo" terrorists on 5 March 2013, just before the joint forces of the Royal Malaysian Army and Royal Malaysia Police commandos launched an all-out assault during Operation Daulat.[94] The Hornets were tasked with close air support to the no-fly zone in Lahad Datu, Sabah.[95]

Spanish Air Force's EF-18

The Spanish Air Force (Ejército del Aire) ordered 60 EF-18A model and 12 EF-18B model Hornets (the "E" standing for "España", Spain), named respectively as C.15 and CE.15 by Spanish AF.[96] The Spanish version was delivered from 22 November 1985 to July 1990.[17][97] These fighters were upgraded to F-18A+/B+ standard, close to F/A-18C/D (plus version includes later mission and armament computers, databuses, data-storage set, new wiring, pylon modifications and software, new abilities as AN/AAS-38B NITE Hawk targeting FLIR pods).

In 1995 Spain obtained 24 ex-USN F/A-18A Hornets, with six more on option. These were delivered from December 1995 until December 1998.[98] Before delivery, they were modified to EF-18A+ standard.[99] This was the first sale of USN surplus Hornets.

Spanish Hornets operate as an all-weather interceptor 60% of the time and as an all-weather day/night attack aircraft for the remainder. In case of war, each of the front-line squadrons would take a primary role: 121 is tasked with tactical air support and maritime operations; 151 and 122 are assigned to all-weather interception and air combat roles; and 152 is assigned the SEAD mission. Air refueling is provided by KC-130Hs and Boeing 707TTs. Pilot conversion to EF-18 is centralized in 153 Squadron (Ala 15). Squadron 462's role is air defense of the Canary Islands, being responsible for fighter and attack missions from Gando AB.

Spanish Air Force EF-18 Hornets have flown Ground Attack, SEAD, combat air patrol (CAP) combat missions in Bosnia and Kosovo, under NATO command, in Aviano detachment (Italy). They shared the base with Canadian and USMC F/A-18s. Six Spanish Hornets had been lost in accidents by 2003.[96]

Over Yugoslavia, eight EF-18s, based at Aviano AB, participated in bombing raids in Operation Allied Force in 1999. Over Bosnia, they also performed missions for air-to-air combat air patrol, close air support air-to-ground, photo reconnaissance, forward air controller-airborne, and tactical air controller-airborne. Over Libya, four Spanish Hornets participated in enforcing a no-fly zone.[100]

Hugo Wolf F/A-18C full-scale training simulator, X-5099

The Swiss Air Force purchased 26 C models and eight D models.[96] Aircraft were delivered from January 1996 to December 1999.[101][17] Three D models and one C model[102] had been lost in crashes as of 2016.[103][104] On 14 October 2015, an F/A-18D crashed in France during training with two Swiss Air Force Northrop F-5s in the Swiss/French training area EURAC25; the pilot ejected safely.[105]

In late 2007, Switzerland requested to be included in the F/A-18C/D Upgrade 25 Program, to extend the useful life of its F/A-18C/Ds. The program includes significant upgrades to the avionics and mission computer, 12 ATFLIR surveillance and targeting pods, and 44 sets of AN/ALR-67v3 ECM equipment. In October 2008, the Swiss Hornet fleet reached the 50,000 flight hour milestone.[106]

The Swiss Air Force has also taken delivery of two F/A-18C full-scale mock-ups for use as ground crew interactive training simulators. Locally built by Hugo Wolf AG, they are externally accurate copies and have been registered as Boeing F/A-18C (Hugo Wolf) aircraft with tail numbers X-5098 and X-5099.[107] These include a complex equipment fit, including many original cockpit components and instruments, allowing the simulation of fires, fuel leaks, nosewheel collapse and other emergency scenarios. X-5098 is permanently stationed at Payerne Air Base while X-5099, the first one built, is moved between air bases according to training demands.[108][109]

The F/A-18C and F/A-18D were considered by the French Navy (Marine Nationale) during the 1980s for deployment on their aircraft carriers Clemenceau and Foch[110] and again in the 1990s for the later nuclear-powered Charles de Gaulle,[111] in the event that the Dassault Rafale M was not brought into service when originally planned.

Austria,[112] Chile,[27] Czech Republic,[112] Hungary,[112] Philippines,[112] Poland,[112] and Singapore[27] evaluated the Hornet but did not purchase it. Thailand ordered four C and four D model Hornets but the Asian financial crisis in the late 1990s resulted in the order being canceled. The Hornets were completed as F/A-18Ds for the U.S. Marine Corps.[27]

The F/A-18A and F-18L land-based version competed for a fighter contract from Greece in the 1980s.[113] The Greek government chose F-16 and Mirage 2000 instead.

An F/A-18B Hornet assigned to the U.S. Naval Test Pilot School

The F/A-18A is the single-seat variant and the F/A-18B is the two-seat variant. The space for the two-seat cockpit is provided by a relocation of avionics equipment and a 6% reduction in internal fuel; two-seat Hornets are otherwise fully combat-capable. The B-model is used primarily for training.

In 1992, the original Hughes AN/APG-65 radar was replaced with the Hughes (now Raytheon) AN/APG-73, a faster and more capable radar. A-model Hornets that have been upgraded to the AN/APG-73 and are capable of carrying the AIM-120 AMRAAM are designated F/A-18A+.

A Marine F/A-18D of VMFAT-101 prepares for takeoff

The F/A-18C is the single-seat variant and the F/A-18D is the two-seat variant. The D-model can be configured for training or as an all-weather strike craft. The "missionized" D model's rear seat is configured for a Marine Corps Naval Flight Officer who functions as a Weapons and Sensors Officer to assist in operating the weapons systems. The F/A-18D is primarily operated by the U.S. Marine Corps in the night attack and Forward Air Controller (Airborne) (FAC(A)) roles.[114]

The F/A-18C and D models are the result of a block upgrade in 1987[17] incorporating upgraded radar, avionics, and the capacity to carry new missiles such as the AIM-120 AMRAAM air-to-air missile and AGM-65 Maverick[7] and AGM-84 Harpoon air-to-surface missiles. Other upgrades include the Martin-Baker NACES (Navy Aircrew Common ejection seat), and a self-protection jammer. A synthetic aperture ground mapping radar enables the pilot to locate targets in poor visibility conditions. C and D models delivered since 1989 also have improved night attack abilities, consisting of the Hughes AN/AAR-50 thermal navigation pod, the Loral AN/AAS-38 NITE Hawk FLIR (forward looking infrared array) targeting pod, night vision goggles, and two full-color (formerly monochrome) multi-function display (MFDs) and a color moving map.[7]

In addition, 60 D-model Hornets are configured as the night attack F/A-18D (RC) with ability for reconnaissance.[114] These could be outfitted with the ATARS electro-optical sensor package that includes a sensor pod and equipment mounted in the place of the M61 cannon.[115]

Beginning in 1992, the F404-GE-402 enhanced performance engine, providing approximately 10% more maximum static thrust became the standard Hornet engine.[116] Since 1993, the AAS-38A NITE Hawk added a designator/ranger laser, allowing it to self-mark targets. The later AAS-38B added the ability to strike targets designated by lasers from other aircraft.[117]

Production of the C- and D- models ended in 2000. The last F/A-18C was assembled in Finland and delivered to the Finnish Air Force in August 2000.[77] The last F/A-18D was delivered to the U.S. Marine Corps in August 2000.[101]

In April 2018, the US Navy announced the retirement of the F/A-18C from combat roles after a final deployment that had ended the month prior.[118]

A VFA-11 F/A-18F Super Hornet performing evasive maneuvers during an air power demonstration above USS Harry S. Truman (CVN-75)

The single-seat F/A-18E and two-seat F/A-18F, both officially named Super Hornet, carry over the name and design concept of the original F/A-18 but have been extensively redesigned by McDonnell Douglas. The Super Hornet has a new, 25% larger airframe, larger rectangular air intakes, more powerful GE F414 engines based on F/A-18's F404, and an upgraded avionics suite. Like the Marine Corps' F/A-18D, the Navy's F/A-18F carries a naval flight officer as a second crew member in a weapon systems officer (WSO) role. The Super Hornet is unofficially known as "Rhino" in operational use. This name was chosen to distinguish the newer variants from the legacy F-18A/B/C/D Hornet and avoid confusion during carrier deck operations.[119][120][121] The Super Hornet is also operated by Australia.

The EA-18G Growler is an electronic warfare version of the two-seat F/A-18F, which entered production in 2007. The Growler has replaced the Navy's EA-6B Prowler and carries a Naval Flight Officer as a second crewman in an Electronic Warfare Officer (EWO) role.

F-18(R)

This was a proposed reconnaissance version of the F/A-18A. It included a sensor package that replaced the 20 mm cannon. The first of two prototypes flew in August 1984. Small numbers were produced.[115]

RF-18D

Proposed two-seat reconnaissance version for the US Marine Corps in the mid-1980s. It was to carry a radar reconnaissance pod. The system was canceled after it was unfunded in 1988. This ability was later realized on the F/A-18D(RC).[115]

TF-18A

Two-seat training version of the F/A-18A fighter, later redesignated F/A-18B.[3]

X-53, NASA's modified F/A-18

F-18 HARV

Single-seat High Alpha Research Vehicle for NASA.[122] High angles of attack using thrust vectoring, modifications to the flight controls, and forebody strakes

X-53 Active Aeroelastic Wing

A NASA F/A-18 has been modified to demonstrate the Active Aeroelastic Wing technology, and was designated X-53 in December 2006.

These designations are not part of 1962 United States Tri-Service aircraft designation system.

F-18L

A proposed land-based export version of the single-seat F-18A with air-superiority and attack capabilities. This variant was to be lightened by the removal of carrier landing capability and assembled by Northrop. Customers preferred the standard Hornet and the F-18L never entered mass production.[27]

(A)F/A-18A/B

• (A)F/A-18A: Single-seat fighter/attack version for the Royal Australian Air Force.
• (A)F/A-18B: Two-seat training version for the Royal Australian Air Force.

"F/A-18A" was the original company designation, designations of "AF-18A" & "ATF-18A" have also been applied. Assembled in Australia (excluding the first two (A)F/A-18Bs) by Aero-Space Technologies of Australia (ASTA) from 1985 through to 1990, from kits produced by McDonnell Douglas with increasing local content in the later aircraft. Originally the most notable differences between an Australian (A)F/A-18A/B and a US F/A-18A/B were the lack of a catapult attachment, replacing the carrier tailhook with a lighter land arresting hook, and the automatic carrier landing system with an Instrument Landing System. Australian Hornets have been involved in several major upgrade programs. This program called HUG (Hornet Upgrade) has had a few evolutions over the years. The first was to give Australian Hornets F/A-18C model avionics. The second and current upgrade program (HUG 2.2) updates the fleet's avionics even further. Since 2019 9 AF-18A have been delivered to Canada to be converted as CF-18A.

CF-18 Hornet

• CF-18A: Single-seat fighter/attack version for the Royal Canadian Air Force. The official Canadian designation is CF-188A Hornet.
• CF-18B: Two-seat training and combat version for the Royal Canadian Air Force. The official Canadian designation is CF-188B Hornet.

EF-18 Hornet

• EF-18A: Single-seat fighter/attack version for the Spanish Air Force. The Spanish Air Force designation is C.15. They were first upgraded to the EF-18A+ version in 1992 and from 2003 to 2004 to 2013 they were locally upgraded by EADS CASA and Indra Sistemas with better avionics, TPAC, data presentation, navigation, software and ECM suit. The AN/APG-65 radar was upgraded to the V3 version and the aircraft also received the AL-400 Radar Warning Receiver and the ASQ-600 emission detector and were certified to operate with Iris-T, Meteor, GBU-48 and Taurus . This version is locally known as EF-18M/C.15M.
• EF-18B: Two-seat training version for the Spanish Air Force. The Spanish Air Force designation is CE.15. They were first upgraded to the EF-18B+ version in 1992.

KAF-18 Hornet

• KAF-18C: Single-seat fighter/attack version for the Kuwait Air Force[87]
• KAF-18D: Two-seat training version for the Kuwait Air Force[87]

F-18C/D Hornet

• The Finnish Air Force uses F/A-18C/D Hornets, with a Finland-specific mid-life update. The first seven Hornets (D models) were produced by McDonnell Douglas.[78] The 57 single-seat F-18C model units were assembled by Patria in Finland.[123] These variants were delivered without air-to-ground capability so the letter A was dropped from the name. They were later upgraded to carry air-to-ground weaponry.

F/A-18C of the Swiss Air Force taxis for takeoff

F-18C/D Hornet

• Switzerland uses F-18C/D,[124] later Swiss specific mid-life update. The Swiss F-18s had no ground attack capability originally, until hardware was retrofitted.

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