The Nanchang Q-5: China’s first home-grown supersonic attacker

What makes the Q-5 special

Full Nanchang Q-5 / A-5 specifications

Baseline note: the figures below describe the Q-5A of the early 1970s and the Q-5C that succeeded it — between them the bulk of the roughly 1,000 to 1,300 airframes Nanchang built between 1969 and 2012. Deltas for the Q-5D, the Q-5E and Q-5F, the Q-5L and the export A-5C are given in grey. Four warnings before the numbers. First, the designations are a genuine mess and most published tables make the same mistakes: the Chinese factory sequence runs Q-5I, Q-5IA, Q-5II, Q-5III in Roman numerals, Western writers renamed those Q-5A, Q-5B, Q-5C and Q-5III/A-5C, and separately from both there are the Q-5 Jia and Q-5 Yi — the first two Chinese cyclical characters used the way English uses A and B — which were the nuclear carrier and the naval torpedo aircraft and are not the same machines as the Western Q-5A and Q-5B at all. Second, China has never published a performance handbook for this aeroplane in any language; the tables in circulation descend from a small number of export brochures and Jane’s entries that copy one another, so treat everything here as best-attested rather than authoritative. Third, the aircraft changed underneath its own name. It entered service with a 4 m internal weapons bay and left service with a fuel tank welded into that bay, which means the same designation covers two rather different aeroplanes and most specification tables silently mix them. Fourth, the engines: the Q-5A and Q-5C flew on the WP-6, the Chinese copy of the Tumansky RD-9B rated at 3,250 kgf in reheat, while the 36.78 kN figure that appears in most online tables belongs to the later WP-6A III and to the marks from the Q-5I onwards. Using the higher number with the earlier weights inflates the thrust-to-weight ratio by about a seventh.

Armament & payload

The Q-5 carried its bombs inside itself, and then China filled the bay with fuel

The Q-5 is the only fighter-derived attack aircraft of its generation outside the United States to carry its bombs inside itself, and that bay is the key to the whole design. Nanchang cut a four-metre bomb bay into the belly, rated it at 1,000 kg, and hung a further tonne on external racks — six stations at first, ten from the early 1980s. The reasoning was drag: a MiG-19 airframe with a tonne of iron bombs slung underneath is a slow aeroplane, and the People’s Liberation Army wanted something that could run in at low level fast enough to survive. Area-ruling the fuselage and putting half the load inside it gave the Q-5 sea-level speed within a whisker of the fighter it came from.

It also gave China a nuclear delivery aircraft. A small number of Q-5s were rebuilt as the Q-5 Jia to carry the Kuangbiao-1, a miniaturised fission weapon of eight to twenty kilotons developed after the 1969 Sino-Soviet border fighting to break up Soviet armoured formations. The bomb was too big for the bay and was carried semi-recessed in it instead, doors removed. On 30 December 1971 Yang Guoxiang ran the first live drop at Lop Nur and the weapon refused to release; he made three passes, tried all the backup releases, and then landed with a live nuclear bomb on the aeroplane and most of its safeties off while Zhou Enlai put ten thousand people into tunnels. The fault was traced to a temperature-sensitive release mechanism. On 7 January 1972 he flew it again and it worked: run in at 300 m, pull up through forty-five degrees, release at about 1,200 m in the climb, roll out and run, with the weapon lobbing on for some twelve kilometres and detonating about a minute later. That is the whole argument for an internal bay in one sortie.

Everything else about the Q-5’s armament is a story of what it did not have. For thirty-five years it carried nothing guided: iron bombs, rocket pods, two 23 mm cannon and a pair of heat-seeking missiles for self-defence. Guided air-to-surface weapons arrived only with the Q-5E and Q-5F in the mid-2000s, by which time the airframe was forty years old. And in 1983 the air force did something revealing — it filled the bomb bay with fuel. Range mattered more than drag, the bay had never been used for much beyond training loads, and from the Q-5I onwards the feature that distinguished the Q-5 from every other Chinese aircraft simply ceased to exist. Chinese stores clearances have never been published, export fits differed from People’s Liberation Army fits in almost every particular, and several of the weapon associations below rest on export brochures and photographs rather than documents.

Sourcing caveat: no Chinese stores clearance document for the Q-5 has ever been published. The internal bay capacity, the ten-station arrangement and the 2,000 kg external limit come from export brochures for the A-5C and from Chinese factory histories, which do not always agree with each other on which mark got what. The Kuangbiao-1 figures come from Chinese accounts of the 1971 and 1972 trials as reported in Western aviation press interviews with the pilot; those accounts describe the weapon variously as a hydrogen bomb and an atomic bomb, and the weight is given as both one tonne and two. The technically defensible reading is that it was a miniaturised fission device intended as the primary for later thermonuclear weapons, of eight to twenty kilotons, and that the confusion arises because Yang Guoxiang had also dropped China’s first true hydrogen bomb from an H-6 in June 1967. Rocket calibres and drop tank sizes are well attested; the Q-5E, Q-5F and Q-5L weapon fits rest largely on photographs.

Variants

Nanchang rebuilt the MiG-19 from the wing forwards, then spent forty years trying to give it a nose worth having

The Q-5 began as a request, made in August 1958, for a Chinese jet attack aircraft, and it took eleven years to answer. Lu Xiaopeng’s team had production drawings finished by 1960; the programme was killed in 1961 in the collapse that followed the Great Leap Forward, kept alive by a skeleton crew, restarted in 1963 at Nanchang, flown on 4 June 1965, and only cleared for series production at the end of 1969 with deliveries from 1970. What emerged was not a modified J-6. The wing, the tail surfaces, the undercarriage geometry, the engine bay and the systems architecture carried over; the entire forward fuselage did not. The nose intake was deleted and replaced by a solid conical nose and lateral intakes, the fuselage was lengthened and waisted to the transonic area rule, a four-metre weapons bay was cut into the belly, the wing was enlarged and slightly unswept, and the nose gear was made to rotate flat to clear the bay. Chinese engineering histories describe the conical nose, the area rule and that nose gear as the three firsts of the programme, and they are right to.

The variant sequence that follows is confusing because two naming systems overlap. Nanchang used Roman numerals — Q-5I, Q-5IA, Q-5II, Q-5III — and Western sources relabelled the same aircraft Q-5A, Q-5B, Q-5C. Running underneath both are the Chinese cyclical characters Jia and Yi, used the way English uses A and B, which produced a Q-5 Jia that was the nuclear carrier and a Q-5 Yi that was the naval torpedo aircraft. Neither is the same machine as the Western Q-5A or Q-5B, and a great deal of published confusion about "the Q-5A that dropped the bomb" comes from that collision. The two foreign modernisation programmes, one Italian and one French, both died: one to the arms embargo that followed June 1989, the other to money and to the customer losing interest.

Q-5 (first flight 4 June 1965; production from late 1969)

The original aircraft: solid nose, lateral intakes, 4 m internal weapons bay, six external stations, two 23 mm cannon in the wing roots. The prototype’s two 30 mm nose guns were deleted before production.

Q-5 Jia (first flight 1 August 1970; small number converted)

The nuclear carrier. Modified to take the Kuangbiao-1 semi-recessed in the bay and to fly the toss delivery, with the release sequencing and safeties that implies. Live drop at Lop Nur on 7 January 1972 after the failed attempt of 30 December 1971; the tactical nuclear programme was stopped in March 1979.

Q-5 Yi (1970; a handful, limited service only)

The naval torpedo variant, with an enlarged rounded nose housing a search and fire-control radar — the only Q-5 ever to carry radar. Withdrawn once it was accepted that a low-level torpedo run against modern shipborne air defences could not be survived.

Q-5I (design certified 3 December 1983; the great majority of the fleet)

The bay plated over as a fuel tank, main tank enlarged, a flexible cell added, WP-6A III engines, ten stores stations and a 2,000 kg external load. Range up twenty-six per cent, combat radius up thirty-five per cent, landing distance down 130 m. Western sources usually call this the Q-5A, and it is the version most Q-5 photographs show.

Q-5IA and Q-5II (certified January 1985; often labelled Q-5B and Q-5C)

Q-5IA added a radar warning receiver, chaff and flare dispensers, a tail warning device, a new fire-control sight, electrical bomb release and pressure refuelling. Q-5II extended the warning coverage to omnidirectional. These are the first Q-5s with any self-protection at all.

Q-5III / A-5C (contract April 1981, first flight 7 September 1982; the principal export model)

Built for Pakistan and then sold onwards: Martin-Baker PKD10 zero-zero ejection seat, Rockwell Collins flight instrumentation, NATO-standard pylons and wiring for AIM-9P and Matra R.550 Magic, improved radios, IFF and altimeters, and clearance for BL755 and Durandal. The best-equipped Fantan of its generation, and none of it Chinese.

Q-5M / A-5M and Q-5K / A-5K (1986–1993; prototypes only)

Two attempts to give the Q-5 a Western nose. The Sino-Italian A-5M borrowed the AMX attack aircraft’s avionics suite from Aeritalia and died with the post-Tiananmen arms embargo of 1989. The Sino-French A-5K "Kong Yun", with Thomson-CSF and SAGEM equipment, flew in 1991 and was terminated by 1993. Neither reached production, and their cancellation is the reason the Q-5 spent the 1990s obsolete.

Q-5D (introduced around the 1996 Taiwan Strait crisis)

The domestic answer to the two dead foreign programmes, using what could be salvaged of the Q-5M work: twin central computers, integrated Doppler and satellite navigation, an ALR-1 laser rangefinder, a QHK-10 head-up display and RW-30 warning receivers. An interim aircraft, described as such at the time.

Q-5E and Q-5F (from about 2005)

The first Q-5s able to use a guided weapon. Q-5E carries LS-500J laser-guided bombs; Q-5F carries the designator pod on an enlarged starboard belly station so a pair can work as marker and shooter. Roughly a hundred and twenty C, D and E standard aircraft were the last in Chinese front-line service.

Q-5J and Q-5L (mid-2000s onwards)

Q-5J is the tandem two-seat conversion trainer, forty years after the type entered service and a fair comment on how it had been trained on until then. Q-5L adds low-light television and infra-red sensors with Russian-supplied elements to the laser designation fit, giving the type a night and adverse-weather capability at the very end of its life.

Disposition today. Nanchang built somewhere between about 1,000 and 1,300 Q-5s, with production running from 1969 to 2012; the discrepancy between the two figures is real and unresolved in the open sources, and probably turns on whether unfinished and rebuilt airframes are counted. China has gone. The People’s Liberation Army Navy gave up its Q-5s around 2011, the Air Force wound down its last regiments with roughly 120 C, D and E standard aircraft on strength; English-language sources give 2017 as the end of front-line service while IISS counts of around 150 airframes persisted into 2019, and no final-flight date has ever been publicly confirmed. Take the honest answer to be that the Q-5 was out of the Chinese order of battle by the early 2020s. Pakistan retired its last A-5Cs from No. 16 Squadron in April 2011, No. 26 Squadron having given them up in February 2010, replaced by the JF-17; the total Pakistani buy is variously reported as 42 accepted in February 1983, 52 or 54 in the first batch, 58 across all deliveries to 2003, and 98 to 100 ordered overall, and these figures cannot be reconciled from open sources. Bangladesh retired its A-5Cs, sixteen or twenty bought in 1986, in November 2014. Sudan bought fifteen to twenty from 2003 and used them in Darfur; recent listings describe the survivors as stored rather than flying. North Korea is credited with about forty aircraft delivered in the 1970s and 1980s and a residual handful today, but no photograph of a North Korean Q-5 has ever surfaced and the whole fleet should be treated as unconfirmed. That leaves Myanmar as the only operator that can be shown to be flying the type: between 24 and 36 A-5Cs were delivered in the 1990s, around twenty remain listed as in service, and they have been used continuously against insurgents — including in March 2015, when Myanmar Air Force A-5Cs bombed a village in Gengma County on the Chinese side of the border and killed four people. Because only one operator can be corroborated as currently flying the Fantan, no fleet chart is shown here; a chart with one honest row and three unverifiable ones would mislead more than it informs. Museum survivors are numerous in China and are original airframes, not reproductions; no Q-5 has ever flown in civilian hands.

From drawing board to export attacker

Twelve Q-5 Fantan stories

The Q-5 Fantan in pictures

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Where the Q-5 Fantan flew

An attacker used more abroad than at home

The Q-5 has no record of air-to-air victories — that was never its job. As a ground-attack aircraft its service is measured in strike sorties, and most of its actual combat use came in the hands of export customers rather than China. Sudan flew its A-5s in the ground-attack role during the conflict in Darfur, and Myanmar used the type in counter-insurgency operations, including a 2015 strike whose ordnance spilled across the border into China. Pakistan, the largest operator, flew the A-5C in the strike role for nearly three decades but has no confirmed record of combat use.

See the wider combat record of every military aircraft. Combat use is described here neutrally and at the level the open sources support.

Everything people ask about the Q-5 Fantan

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Every fact, checked

• GlobalSecurity.org — Q-5 DesignThe MiG-19 / J-6 redesign, area-ruling, side intakes, dimensions and the loss of top speed.
• GlobalSecurity.org — Q-5 VariantsVariant breakdown, the internal bay, and the nuclear-carrier role and January 1972 test.
• GlobalSecurity.org — Pakistan A-5Pakistani A-5C numbers, squadrons and service.
• MILAVIA — Q-5 / A-5C specificationsA-5C dimensions, weights, WP-6 thrust, speed, ceiling and armament.
• MilitaryFactory — Nanchang Q-5First-flight date, production total, performance figures and operator list.
• War Thunder Wiki — History of the export Fantan (A-5C)Detailed export and operator numbers for Pakistan, Bangladesh, Myanmar, Sudan and North Korea.
• Federation of American Scientists — Q-5 special weaponsReference for the nuclear-modified Q-5A and the tactical delivery role.
• The National Interest — The Nanchang Q-5Anti-flash scheme, combat use in Darfur and Myanmar, and PLAAF service into the 2010s.