The jet that made radar blind

What makes the F-117 special

Full F-117 specifications

Baseline note: every figure below describes a production F-117A in its late Single Configuration Fleet standard — one pilot, two non-afterburning General Electric F404-GE-F1D2 turbofans, two internal weapon stations, no gun, no radar and no external hardpoint of any kind — as flown by the 49th Fighter Wing from Holloman Air Force Base, New Mexico, between 1992 and the retirement ceremony of 22 April 2008. Sixty-four airframes were built: five YF-117A full-scale development aircraft and fifty-nine production F-117As, the last delivered on 3 July 1990. The differences between them are small enough that one set of tables covers the type; deltas for the YF-117A, for the pre-1990 avionics fit and for the naval and two-seat proposals that never left paper are in grey. Five numbers need settling before the tables start. Wing sweep: the leading edge is swept 67° 30′, a figure Lockheed Martin and the trade references agree on. The English Wikipedia infobox gives "50°", which does not describe the leading edge of an F-117 and should not be quoted as though it does; the number that matters for this aeroplane is the 67-and-a-half degrees that keeps the wing edge outside the forward radar sector. Wing area: 72.5 m² (780 sq ft) is the standard published figure. German Wikipedia gives 105.9 m², which is an outlier and inconsistent with the 329 kg/m² wing loading the same sources quote; 72.5 m² is used here. Thrust: the F404-GE-F1D2 is normally rated at 47.2 kN (10,600 lbf) uninstalled at sea level. The English Wikipedia infobox gives 40.2 kN (9,040 lbf), which is closer to an installed figure behind the F-117’s gridded intakes and long serpentine ducts; both numbers circulate and the difference is real inlet and nozzle loss, not a typing error. Radar cross-section: no official number has ever been released. Published estimates run from 0.001 m² to 0.01 m² (10 to 100 cm²) at X-band, head-on. Ben Rich’s marble and ball-bearing analogies are memorable but are not measurements, and every specific square-centimetre figure in print is an outsider’s estimate. The number that governed the aeroplane’s career is not a number at all: faceting is frequency-dependent, and against metre-wavelength VHF radar the F-117 was very much less invisible than against the centimetric fire-control sets it was shaped to beat. Cost: 42.6 million dollars flyaway per aircraft in programme-year dollars is the figure Lockheed and the Air Force used. The Federation of American Scientists gives 122 million dollars as a fiscal-year-1998 total programme unit cost, and 111.2 million dollars also appears; the three are not contradictory, they are flyaway, programme and average procurement cost respectively, and quoting one against another is the commonest way this aeroplane’s price is misreported.

Armament & payload

The F-117 carried two bombs, no gun and no missile, and every other decision on the aircraft was made to buy those two bombs a clear run

The armament of an F-117A is a single sentence: two guided weapons on two trapeze stations in a split internal bay, about 2,300 kg (5,000 lb) in all, and nothing else anywhere on the aeroplane. There is no gun and no provision for one. There is no air-to-air missile, no rocket pod, no external pylon, no drop tank and no targeting pod, because there is no external hardpoint of any kind and adding one would have undone the shape. A Second World War Lancaster carried three times the tonnage; what the F-117 carried instead was the ability to put its two bombs on the roof of a building in the most heavily defended airspace on earth and fly home.

That trade only works if the weapon is accurate enough that two is enough, and for most of the type’s life it was a laser-guided weapon designated by the aircraft’s own downward-looking infrared turret in the final seconds of the run. The consequence is the aircraft’s real limitation, and it is not stealth: infrared does not see through cloud. On nights when the weather over Baghdad or Belgrade closed in, the most survivable strike aircraft in the world could reach its target and not be able to hit it. GPS-guided GBU-31 JDAM and the enhanced EGBU-27 fixed that only in the last few years of service, from the mid-2000s.

The bay doors are the other half of the story. They are hinged, serrated-edged and open for a matter of seconds; while they are open the aircraft’s radar cross-section rises sharply, because a cavity is a corner reflector and no amount of edge alignment fixes that. Weapon release was therefore the most dangerous moment of any F-117 sortie, and it was timed and scripted accordingly. Everything below describes the USAF F-117A, the only operator the type ever had. There is no export variant, no licence production and no foreign fit, so there is no operator variation to report; the only meaningful variation is chronological, between the pre-OCIP fleet of the 1980s, the Single Configuration Fleet standard from 1996, and the JDAM-capable aircraft of the final years.

Sourcing caveat: weapon lists for the F-117 vary between the USAF fact sheet, the Federation of American Scientists, Airforce Technology and Lockheed Martin’s own material, and several of them include stores — AGM-65, AGM-88, wind-corrected munitions dispensers — that were cleared on paper or trialled but never used in anger. Where this page distinguishes between what the aircraft could carry and what it did carry, it says so. Bay dimensions, exact release envelopes and the radar cross-section penalty of open doors have never been published and any specific figure for them is an estimate from outside the programme.

Variants

Sixty-four airframes, two demonstrators and a shelf of naval and two-seat proposals that never left paper

The F-117 has almost no variants, which is unusual for an aircraft that served for twenty-five years, and the reason is that it was never sold to anyone. There was no export customer, no licence production, no two-seat trainer and no reconnaissance or electronic-warfare derivative. Sixty-four airframes were built in a single basic configuration, upgraded twice as a fleet, and retired together. What the type has instead of variants is an ancestry, and the ancestry is the interesting part.

It begins with a paper. In 1962 the Soviet physicist Pyotr Ufimtsev published Method of Edge Waves in the Physical Theory of Diffraction, which showed that the strength of a radar return depends on the configuration of an object’s edges rather than on its size. The USAF Foreign Technology Division translated it in 1971 and it sat unread until Lockheed’s Denys Overholser, a radar specialist rather than an aerodynamicist, found it and understood what it meant: if you could compute the return from a flat plate and an edge, you could compute the return from an aircraft made entirely of flat plates and edges. Overholser and the retired Lockheed mathematician Bill Schroeder turned the theory into a program called Echo 1, and Echo 1 produced the shape.

The faceting is therefore not a design philosophy but a computing constraint, and this is the single most misunderstood thing about the aeroplane. Nobody at the Skunk Works believed flat panels were aerodynamically or even electromagnetically ideal; curved surfaces would have been better on both counts. But a mid-1970s computer could only solve the radar cross-section of simple plane geometry, so the aircraft was built out of the only shapes the mathematics could handle. Ben Rich’s team called the first model the Hopeless Diamond, and the joke was aerodynamic, not electromagnetic. When Northrop built the B-2 a decade later with far greater computing power behind it, the facets vanished and the curves came back — which tells you exactly what the F-117’s angles were for.

The price was an aeroplane that could not fly itself. Statically unstable in pitch, roll and yaw at the same time, subsonic, short on thrust, heavy on the wing, with an approach speed that demanded a braking parachute and a handling reputation that earned it the name Wobblin’ Goblin, which its pilots have spent forty years insisting it did not deserve. They called it the Black Jet. Five hundred and fifty-eight Air Force pilots flew it, each issued a sequential Bandit number on completing his first flight, and for most of the type’s career they flew it only at night, from a base that did not officially exist.

Hopeless Diamond (1975 / none flown)

The concept model that started it: a faceted pole-test shape produced by Echo 1, roughly two metres across, tested on the radar range at Palmdale and later at White Sands against Northrop’s competing design. It won because it measured better, not because it looked better; the name records what the aerodynamicists thought of it.

Have Blue, XST (1977–1979 / 2 built, HB1001 and HB1002)

The DARPA-funded technology demonstrators, about 40 per cent smaller than the F-117 and unmistakably its parent: same faceting, same buried inlets, but with the tail surfaces canted inwards rather than outwards. Two General Electric J85 turbojets, quadruplex fly-by-wire lifted from the F-16. First flight 1 December 1977 with Bill Park at Groom Lake. Both aircraft were lost — HB1001 on 4 May 1978 after a hard landing jammed the undercarriage, HB1002 on 11 July 1979 to a hydraulic fire caused by a loosened exhaust clamp — and both pilots ejected safely. The programme was still judged a success, because by then it had proved the only thing it needed to prove.

YF-117A, Senior Trend full-scale development (1981–1984 / 5 built, 79-10780 to 79-10784)

The five development aircraft, funded from the November 1978 decision to build an operational aeroplane. Hal Farley flew 79-10780 at Groom Lake on 18 June 1981, thirty-one months after go-ahead. Flight test drove the enlargement of the ruddervators and a long list of systems fixes; the airframes are externally close to production standard and all five survive.

F-117A (1982–1990 / 59 built)

The production aircraft and the only version to enter service, delivered from August 1982 to 3 July 1990 at about 42.6 million dollars flyaway each. Initial operating capability October 1983 with the 4450th Tactical Group at Tonopah Test Range, Nevada, a unit that flew A-7D Corsair IIs by day as a cover story and F-117s by night, and that swapped the A-7s for T-38A Talons in 1989 once the secret was out. The Pentagon acknowledged the aircraft’s existence on 10 November 1988 with a single deliberately poor photograph. The 4450th became the 37th Tactical Fighter Wing in October 1989; the fleet moved to Holloman Air Force Base and the 49th Fighter Wing in 1992.

F-117A OCIP (1984–1995 / fleet retrofit, no new airframes)

Offensive Combat Improvement Program, in two phases: a rebuilt cockpit with colour multifunction displays and a moving map, an autothrottle, and a four-dimensional flight management system that let a pilot fly a route to a time as well as a place. It made a difficult aeroplane manageable on a five-hour night sortie and is the reason Desert Storm went as well as it did.

F-117A SCF (1996–2006 / fleet retrofit)

Single Configuration Fleet, the programme that ended the situation in which almost every airframe had a slightly different signature treatment and a slightly different systems fit. Sprayed radar-absorbent coatings replaced much of the bonded sheet material, cutting the maintenance burden that had crippled early availability, and the fleet was standardised. GPS-guided GBU-31 JDAM and EGBU-27 integration followed in the same period.

F-117N Seahawk (1993–1994 / none built)

Lockheed’s unsolicited carrier proposal to the US Navy: a reshaped, larger-winged, tailhook-equipped derivative with afterburning General Electric F414 engines and, in the A/F-117X development of it, external hardpoints and an air-to-air capability. The Navy was not interested in an aircraft that would have required a new production line for a small buy, and Congress did not fund it. Nothing was built and no metal was cut.

F-117B and RAF proposals (late 1980s–1990s / none built)

A land-based derivative of the Seahawk work, offered at various points to the United States Air Force and to the United Kingdom, with greater range and payload. Britain was reportedly sounded out about the F-117A itself in the 1980s. Nothing came of any of it, and no F-117 airframe has ever worn a foreign roundel.

Export and licence production (never / none)

There is none, and the entry exists to close the question. The F-117 was among the most tightly held programmes in United States history; not one airframe, kit or licence was ever released to another country. The only F-117 outside American hands is the wreckage of 82-0806 in Belgrade, which arrived there by being shot down.

Post-2008 test and aggressor aircraft (2008 to date / no separate designation)

Not a variant on paper, but in practice a distinct fleet: a handful of airframes kept flying from Tonopah after the type was officially retired, doing work the original aircraft was never built for. Two were photographed in January 2022 wearing an unexplained mirror-like coating that is generally read as an infrared signature experiment. They fly as red air against F-22 and F-35 crews, as radar and infrared sensor testbeds, and as surrogates for stealthy subsonic cruise missiles in air-defence exercises.

Closing note on losses, survivors and the aircraft that never stopped flying, current as of 3 September 2026. Of the sixty-four airframes built, six were destroyed. The first production aircraft, 80-0785, was written off at Groom Lake on 20 April 1982 when its flight control sensor leads were connected in reverse and it flipped on take-off, severely injuring Robert Riedenauer; it never flew again and its remains stand today as the Skunk Works monument at Air Force Plant 42, Palmdale. Major Ross Mulhare was killed near Bakersfield, California on 11 July 1986 in 81-10792, the finding being spatial disorientation. Major Michael Stewart was killed near Tonopah on 14 October 1987. One aircraft was lost to an engine bay fire traced to a maintenance error in August 1992, the pilot ejecting safely. Captain Kenneth Levens was killed near Zuni, New Mexico on 10 May 1995. On 14 September 1997, 81-10793 shed a wing in front of a crowd at Martin State Airport, Middle River, Maryland, after four fasteners were left out of a wing panel during maintenance; Major Bryan Knight ejected and survived, the aircraft destroyed two houses, and nobody on the ground was killed. All three fatal accidents involved pilots with fewer than a hundred hours on type. The one combat loss was 82-0806 "Something Wicked", callsign Vega 31, on the night of 27 March 1999 over Serbia during Operation Allied Force, and it deserves to be told without the myths that have grown around it. The aircraft was flown by Lieutenant Colonel Dale Zelko of the 8th Fighter Squadron, a Desert Storm veteran. It was shot down at about 20:15 local time near Budađevac by the 3rd Battalion of the 250th Air Defence Missile Brigade of the Army of Yugoslavia, commanded by Lieutenant Colonel Zoltán Dani — a Hungarian-Serb officer who was promoted to Colonel later, and who is frequently and incorrectly given that rank on the night itself. His battery used the S-125 Neva-M, the NATO SA-3 Goa, a Soviet system already thirty years old. Dani acquired the aircraft at about 23 km on a low-frequency P-18 metre-wavelength early-warning radar, which faceting is far less effective against than the centimetric fire-control radars the F-117 was shaped to defeat, then illuminated with his fire-control radar for bursts of no more than about seventeen to twenty seconds so that NATO defence-suppression aircraft could not lock him up. He fired two missiles at a slant range of roughly 13 km with the aircraft at about 8,000 m. The first passed close without detonating and buffeted the aeroplane; the second detonated near enough to tear it out of controlled flight. Zelko ejected, landed in a field south of Ruma about a kilometre from the wreck and from the E70 motorway, hid in a drainage ditch he had picked out during his descent while Serbian search parties came within a few hundred metres of him, and was recovered roughly eight hours later in the early hours of 28 March by a combat search and rescue package of two MH-53s and an MH-60. What is not established, and should not be repeated as fact: that the Serbs used a Czech Tamara or VERA passive surveillance system; that the F-117 was hit because its bomb bay doors happened to be open at that instant, which is plausible and widely stated but has never been confirmed; that a second F-117 was shot down at any point, a claim that appears on Serbian commemorative posters and nowhere credible. What is contested rather than fabricated: that NATO had flown the same corridors on successive nights and that no EA-6B Prowler jamming support was available that night because of weather. Both are widely reported by participants and both are more accurate as descriptions of a systemic complacency than as a single cause. A second F-117 is alleged to have been damaged on 30 April 1999 and to have returned to Spangdahlem and never flown again; another F-117 pilot corroborated the incident in 2020, but it remains officially unacknowledged. In 2011 Dani, by then running a bakery, met Zelko in Serbia; the two became friends, which is the part of this story most worth remembering. Pieces of 82-0806 are on display at the Aeronautical Museum in Belgrade; other components were examined by Russian and, by several accounts, Chinese specialists. Retirement and afterwards. Program Budget Decision 720 of 28 December 2005 brought the planned 2011 retirement forward to 2008 to release about 1.07 billion dollars towards F-22 purchases. The fleet was retired in eight phases between 13 March 2007 and 22 April 2008, the ceremony being held at Holloman; the last aircraft, 86-0831, flew from Palmdale to Tonopah on 11 August 2008. One airframe, 79-10784, was deliberately scrapped at Palmdale on 26 April 2008 to develop and test destruction methods. The rest went into Type 1000 recallable storage in their original climate-controlled hangars at Tonopah with the wings removed, a condition Congress mandated in the 2007 National Defense Authorization Act; the 2017 Act relaxed it and authorised demilitarisation at a few airframes a year. Survivors. Every displayed F-117 is an original airframe — there are no reproductions of this aircraft anywhere, and there could not usefully be, since the shape was the classified part. All four surviving YF-117As are preserved: 79-10780 as gate guardian at Nellis Air Force Base since 16 May 1992, 79-10781 at the National Museum of the United States Air Force at Wright-Patterson, 79-10782 at Holloman, and 79-10783 with the Air Force Flight Test Museum at Edwards. Production aircraft are on display at the Museum of Aviation at Warner Robins, the Hill Aerospace Museum in Utah, the Ronald Reagan Presidential Library at Simi Valley, the Pima Air and Space Museum at Tucson, the Castle Air Museum at Atwater, the Evergreen Aviation and Space Museum at McMinnville, the Air Zoo at Kalamazoo, the Stafford Air and Space Museum in Oklahoma, the Strategic Air Command and Aerospace Museum in Nebraska, the Palm Springs Air Museum, and the Palmdale Skunk Works monument. And a number of them are still flying. This is not a rumour, and it is not classified any more: the Air Force published photographs of airborne F-117s on DVIDS in 2021, which was the first official acknowledgement, and the aircraft have since appeared openly at Fresno Yosemite in September 2021 alongside 144th Fighter Wing F-15s, in the Savannah Sentry exercise in 2022, in Northern Edge 23-1 in Alaska in 2023 — their first acknowledged appearance outside the continental United States since retirement — over the R-2508 complex in the Mojave in February 2024, and taking fuel from a tanker over Los Angeles in September 2025. As of reporting in the first half of 2026, roughly forty-five airframes remain on charge in flying or regenerable stored condition at Tonopah, of which only about five are flying at any one time; contractor maintenance and logistics support is funded through at least 2034, and airframes are being demilitarised or handed to museums at about two or three a year. On that timetable the last F-117 will fly more than half a century after the type entered service, and more than a quarter of a century after it was officially retired. The Air Force has never explained why it kept them, and does not need to: an aeroplane that is stealthy against some radars and not others, subsonic, unarmed and available in small numbers is close to the perfect adversary and the perfect test bed, and there is nothing else in the inventory that does the job.

From black project to retirement

Twelve stories from the shadows

The Nighthawk in pictures

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The F-117 in motion

A hand-picked F-117 Nighthawk documentary is coming soon to this page. In the meantime, explore the stories, gallery and operations map above — or read the full account of the 1999 shootdown in the stories below.

The F-117 Nighthawk in motion

Real Engineering — one of the most-watched F-117 Nighthawk films on YouTube.

Where the F-117 operated

The score that defines it

The F-117 never fired a shot in air-to-air combat — it carried no guns or missiles and never needed them. Its record is one of stealthy precision strikes against the hardest targets, and of a single, historic loss. In Desert Storm it flew a small fraction of the sorties yet hit a large share of the strategic targets, and it did so without losing an aircraft. Only once, over Serbia in 1999, did a defender manage to bring a Nighthawk down.

Compare the combat record of every military aircraft. Figures as of July 2026.

Everything people ask about the F-117

Continue the tour

Every fact, checked

• National Museum of the U.S. Air Force — F-117A fact sheetOfficial specifications, development and service history.
• Lockheed Martin — F-117 Nighthawk historyThe manufacturer’s account of the Skunk Works stealth programme.
• Air & Space Forces Magazine — F-117Reference specifications and operational timeline.
• The Aviation Geek Club — F-117 over BaghdadDesert Storm sortie figures and first-night strikes.
• Defense Media Network — The Rescue of Vega 31Detailed account of the 1999 shootdown and pilot rescue.
• The Aviationist — the 1999 F-117 shootdownZoltan Dani’s SA-3 battery, tail number 82-0806 and why stealth failed.
• Code One Magazine — F-117 Nighthawk MemoriesFirst-hand recollections of the secret Tonopah years.
• 19FortyFive — How the F-117 redefined stealthDevelopment, Ufimtsev’s physics and the aircraft’s legacy.