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Ilyushin Il-20 Coot

Ilyushin · SIGINT / ELINT · Russia · Early Jet (1946–1969)

Ilyushin Il-20 Coot — SIGINT / ELINT
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The Ilyushin Il-20 (NATO reporting name Coot-A) is a Soviet electronic-intelligence reconnaissance aircraft — the Soviet Naval Aviation and Soviet Air Forces long-range ELINT platform from the late 1960s through 2026. The Il-20 is a modification of the Ilyushin Il-18 four-turboprop airliner with extensive ELINT equipment. About 22 Il-20 airframes were converted between 1968 and 1972 at Voronezh Plant No. 64; subsequent upgrades to Il-20M and Il-20RT variants have kept the type operationally relevant through five decades.

The Il-20 retains the base Il-18's four Ivchenko AI-20M turboprop engines (4,250 shp each). Maximum speed 600 km/h, range 6,200 km, service ceiling 8,000 m. The aircraft's mission systems include a large under-fuselage SLAR (Side-Looking Airborne Radar) fairing (the distinctive "Coot-A" feature), multiple SATCOM antennas, signals receivers in fuselage-side pods, optical / infrared sensors, and a mission-operator workstation cabin. The aircraft can monitor radio communications, radar emissions, and electromagnetic signals from standoff distances of several hundred km.

Il-20 service was originally focused on Soviet Naval Aviation Black Sea Fleet and Northern Fleet signals collection against NATO naval forces. The Il-20 famously intercepted U.S. Navy carrier battle groups in the Norwegian Sea during the 1970s-1990s Cold War. Combat use included Soviet operations during the Soviet-Afghan War (1979-1989) and Russian Aerospace Forces operations in Chechnya (1994-2009), Georgia (2008), Syria (2015-present), and Ukraine (2022-present). A famous 2018 incident saw Syria air defences accidentally shoot down a Russian Il-20M off the Syrian coast, killing all 15 crew. Russian Aerospace Forces operates about 20 Il-20 / Il-20M airframes in 2026; the type is being supplemented (not replaced) by the newer Tupolev Tu-214R.

For Kids — a shorter, friendlier version

The Ilyushin Il-20 is a special spy plane made in the Soviet Union. It was built to listen to radio signals and radar from far away. Pilots and crew could gather secret information without getting too close to danger.

The Il-20 started as an ordinary passenger plane called the Il-18. Workers changed it into a spy plane between 1968 and 1972. About 22 of these planes were converted at a factory in Voronezh.

The plane has four powerful engines that spin large propellers. It can fly as fast as about 370 miles per hour. Its range is very long — longer than a coast-to-coast trip across the United States.

A big radar pod hangs under the belly of the plane. It also has special antennas and sensors on the sides. These tools let the crew pick up signals from hundreds of miles away.

The Il-20 served for over 50 years, which is a very long time for any aircraft. Upgrades helped keep it useful decade after decade. It stayed in service all the way through the 2020s.

Fun Facts

  • The Il-20 started life as a passenger airliner before being turned into a spy plane.
  • Only about 22 of these special planes were ever made.
  • The plane can fly over 6,000 kilometers on one trip — longer than a flight from New York to London.
  • A huge radar pod on the belly of the plane makes the Il-20 easy to spot.
  • The crew can listen to radar and radio signals from hundreds of miles away.
  • The Il-20 kept flying for more than 50 years, longer than most aircraft ever do.
  • The plane has four turboprop engines, each one very powerful.
  • NATO gave this plane the nickname Coot-A to track it easily.

Kids’ Questions

What does the Il-20 actually do?

The Il-20 is a spy plane that listens to radio signals and radar. It flies far away from danger and collects secret information. A crew of operators works inside to study all the signals.

Is the Il-20 bigger than a normal plane?

The Il-20 is about the size of a large passenger airliner because it was built from one. It is bigger than most small private planes you might see at a local airport. Its long wings help it fly very far.

How long has the Il-20 been flying?

The Il-20 first flew in the late 1960s and kept going past 2020. That means it flew for over 50 years. Workers added upgrades over the years to keep it useful.

Why does the Il-20 have a big pod under its belly?

That big pod holds a powerful side-looking radar. The radar can scan large areas on the ground from high in the sky. It helps the crew gather information without landing.

Variants

Il-20 (basic)
Original 1968-1972 conversion. 22 airframes. SLAR + ELINT fit.
Il-20M (upgraded)
1980s+ upgrade with improved ELINT processors and SATCOM. About 18 conversions.
Il-20RT (telemetry / range support)
Specialised variant for missile-test telemetry collection. About 4 conversions.

Notable Operators

Soviet / Russian Aerospace Forces
Sole operator. About 20 active Il-20 / Il-20M airframes in 2026. Long-range signals collection role.

Frequently Asked Questions

What is the Il-20's mission?

Long-range electronic-intelligence collection — monitoring NATO and other potential adversary radar emissions, communications, and electromagnetic signals from a standoff distance. The aircraft is the Soviet / Russian counterpart of the U.S. RC-135 Rivet Joint. Mission profiles include peacetime reconnaissance flights along NATO airspace borders, support of Soviet / Russian air defence planning, and battlefield signals support during combat operations.

What happened in the 2018 Syrian shoot-down?

On 17 September 2018, a Russian Aerospace Forces Il-20M flying signals support off the Syrian coast was accidentally shot down by Syrian air-defence forces S-200 SAM batteries. The Syrian batteries had been engaging Israeli Air Force F-16I aircraft attacking targets inside Syria; the Il-20M was caught in the engagement because Israeli aircraft were using the Il-20 as radar cover. All 15 Russian crew aboard the Il-20M were killed. The incident strained Russian-Israeli military coordination over Syria.

How is the Il-20 different from the base Il-18?

Same airframe + engines as the Ilyushin Il-18 airliner. The Il-20 adds a large under-fuselage SLAR (Side-Looking Airborne Radar) fairing, multiple SATCOM antennas, signals receivers in fuselage-side pods, optical / infrared sensors, and a mission-operator workstation cabin replacing the passenger cabin. The Il-18 airliner production stopped in 1969; surplus airframes were converted to Il-20 mission configuration through 1972.

Is the Il-20 being replaced?

Supplemented, not replaced. The Russian Aerospace Forces is bringing the Tupolev Tu-214R into service alongside the existing Il-20 fleet. The Il-20 will likely continue in service through the 2030s; the much-newer Tu-214R adds capacity but doesn't fully replace the Il-20's mature ELINT role set.

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