"fleet leader" meaning in English

{
  "forms": [
    {
      "form": "fleet leaders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fleet leader (plural fleet leaders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Aeronautics",
          "orig": "en:Aeronautics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1986 June 6, Richard Feynman, “Personal observations on the reliability of the Shuttle”, in Presidential Commission on the Space Shuttle Challenger Accident, Report to the President",
          "text": "Obviously the best engines to use for comparison would be those of greatest total (flight plus test) operating time -- the so-called \"fleet leaders.\"",
          "type": "quotation"
        },
        {
          "ref": "2009 October 19, Dassault Aviation press releasehttps://web.archive.org/web/20200711052328/https://www.dassaultfalcon.com/en/MediaCenter/Newsd/Pages/PR%202009/Falcon-7X-Fleet-Leader-Passes-2,000-Flight-Hours.aspx",
          "text": "This Falcon 7X is now the fleet leader having flown over 800,000 nautical miles (148,148 km)."
        }
      ],
      "glosses": [
        "The airframe or component with the longest time in service, compared to others of the same design."
      ],
      "id": "en-fleet_leader-en-noun-sHydurVk",
      "links": [
        [
          "aeronautics",
          "aeronautics"
        ],
        [
          "airframe",
          "airframe"
        ]
      ],
      "raw_glosses": [
        "(aeronautics) The airframe or component with the longest time in service, compared to others of the same design."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "fleet leader"
}

{
  "forms": [
    {
      "form": "fleet leaders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fleet leader (plural fleet leaders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "en:Aeronautics"
      ],
      "examples": [
        {
          "ref": "1986 June 6, Richard Feynman, “Personal observations on the reliability of the Shuttle”, in Presidential Commission on the Space Shuttle Challenger Accident, Report to the President",
          "text": "Obviously the best engines to use for comparison would be those of greatest total (flight plus test) operating time -- the so-called \"fleet leaders.\"",
          "type": "quotation"
        },
        {
          "ref": "2009 October 19, Dassault Aviation press releasehttps://web.archive.org/web/20200711052328/https://www.dassaultfalcon.com/en/MediaCenter/Newsd/Pages/PR%202009/Falcon-7X-Fleet-Leader-Passes-2,000-Flight-Hours.aspx",
          "text": "This Falcon 7X is now the fleet leader having flown over 800,000 nautical miles (148,148 km)."
        }
      ],
      "glosses": [
        "The airframe or component with the longest time in service, compared to others of the same design."
      ],
      "links": [
        [
          "aeronautics",
          "aeronautics"
        ],
        [
          "airframe",
          "airframe"
        ]
      ],
      "raw_glosses": [
        "(aeronautics) The airframe or component with the longest time in service, compared to others of the same design."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "fleet leader"
}