{
  "id": "yak-42",
  "name": "Yak-42 (Clobber)",
  "aliases": [],
  "domain": "air",
  "country": "RUS",
  "category": "Jet airliner",
  "status": null,
  "fielded": 1975,
  "operators": [
    "CHN",
    "RUS"
  ],
  "prolif_count": 2,
  "summary": "The Yakovlev Yak-42 (Russian: Яковлев Як-42; NATO reporting name: \"Clobber\") is a 100/120-seat three-engined mid-range passenger jet. It was the first airliner produced in the Soviet Union to be powered by modern high-bypass turbofan engines.",
  "specs": [
    {
      "k": "",
      "label": "Manufacturer",
      "section": "system",
      "v": "Saratov Aviation Plant",
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "crew",
      "v": 2,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "length_m",
      "v": 36.38,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "height_m",
      "v": 9.83,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "width_m",
      "v": 34.88,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium",
      "label": "Wingspan"
    },
    {
      "k": "",
      "label": "Wing area",
      "section": "dims",
      "v": "150 m2",
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "mass_kg",
      "v": 33000,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium",
      "label": "Empty weight"
    },
    {
      "k": "mass_kg",
      "v": 57500,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium",
      "label": "Max takeoff weight"
    },
    {
      "k": "engine_name",
      "v": "3 × Lotarev D-36",
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Thrust / power",
      "section": "mobility",
      "v": "63.75 kN (14,330 lbf) thrust each",
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "range_km",
      "v": 4000,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "speed_kmh",
      "v": 810,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    },
    {
      "k": "ceiling_m",
      "v": 9600,
      "src": [
        "weg-yak-42"
      ],
      "conf": "medium"
    }
  ],
  "payloads": [],
  "variants": [
    {
      "name": "Yak-42",
      "text": "Original production version. Max. takeoff weight 54,000 kg (119,050 lb).",
      "src": [
        "weg-yak-42"
      ]
    },
    {
      "name": "Yak-42ML",
      "text": "Version with modified avionics for use on international use (mezhdunarodnyye linii – international services). Entered service in July 1981 on the Leningrad-Helsinki route.",
      "src": [
        "weg-yak-42"
      ]
    },
    {
      "name": "Yak-42D",
      "text": "Long-range version (Dahl'niy – long range) increased fuel. Replaced standard Yak-42 in production.",
      "src": [
        "weg-yak-42"
      ]
    },
    {
      "name": "Yak-142",
      "text": "Derivative of Yak-42D with updated, western AlliedSignal avionics, spoilers to allow faster descent and enlarged cabin door to accommodate jet bridge. Also designated Yak-42A, Yak-42-100 and Yak-42D-100.",
      "src": [
        "weg-yak-42"
      ]
    },
    {
      "name": "Yak-42R",
      "text": "Yak-42 used as testbed for radar for Yakovlev Yak-141 fighter.",
      "src": [
        "weg-yak-42"
      ]
    },
    {
      "name": "Yak-42F",
      "text": "Conversion of a Yak-42 for geophysical survey and environmental monitoring. Fitted with large underwing pods containing electro-optical sensors.",
      "src": [
        "weg-yak-42"
      ]
    },
    {
      "name": "Yak-42LL",
      "text": "Conversion as testbed for Progress D-236 propfan engine. Single D-236 (rated at 8,090 kW (10,850shp)) mounted in place of starboard engine, on special pylon to give sufficient clearance for 4.2 m (13 ft 9¾ in) propellers. First flew 15 March 1991.",
      "src": [
        "weg-yak-42"
      ]
    },
    {
      "name": "Yak-42M",
      "text": "A projected but unbuilt stretched airliner. Planned to be powered by three Progress D-436 turbofans, a stretched fuselage and new wings. Design developed into Yak-242.",
      "src": [
        "weg-yak-42"
      ]
    }
  ],
  "art": "bomber",
  "image": null,
  "verified": null,
  "changelog": [
    {
      "date": "2026-10-10",
      "change": "Entry created from the Worldwide Equipment Guide (ODIN), bulk import"
    }
  ],
  "url": "https://www.defensepedia.com/systems/yak-42.html",
  "sources": {
    "weg-yak-42": {
      "title": "Yak-42 (Clobber) Russian Jet Airliner",
      "publisher": "U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)",
      "url": "https://odin.t2com.army.mil/WEG/Asset/Yak-42_Clobber_Russian_Jet_Airliner",
      "published": "2026-03-20",
      "tier": 1,
      "checked": "2026-10-10"
    }
  }
}