{
  "@context": [
    "https://schema.org",
    {
      "ec": "https://entitycodes.org/vocab#"
    }
  ],
  "@type": "DefinedTerm",
  "@id": "https://entitycodes.org/sic/4522/",
  "identifier": "4522",
  "name": "Air Transportation, Nonscheduled",
  "description": "Standard Industrial Classification (SIC) code 4522: Air Transportation, Nonscheduled.",
  "url": "https://entitycodes.org/sic/4522/",
  "inDefinedTermSet": {
    "@type": "DefinedTermSet",
    "name": "SIC 1987",
    "url": "https://entitycodes.org/sic/"
  },
  "sameAs": [
    "https://www.osha.gov/data/sic-manual"
  ],
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "SIC division",
      "value": "Division E: Transportation, Communications, Electric, Gas, and Sanitary Services"
    },
    {
      "@type": "PropertyValue",
      "name": "SIC major group",
      "value": "Major Group 45: Transportation by Air"
    }
  ],
  "ec:crosswalk": [
    {
      "system": "NAICS 2022",
      "code": "621910",
      "title": "Ambulance Services",
      "confidence": "chain",
      "via": "SIC1987:4522\u2192NAICS1997:62191\u21922002:621910\u21922007:621910\u21922012:621910\u21922017:621910\u21922022:621910",
      "url": "https://entitycodes.org/naics/621910/"
    },
    {
      "system": "NAICS 2022",
      "code": "481211",
      "title": "Nonscheduled Chartered Passenger Air Transportation",
      "confidence": "chain",
      "via": "SIC1987:4522\u2192NAICS1997:481211\u21922002:481211\u21922007:481211\u21922012:481211\u21922017:481211\u21922022:481211",
      "url": "https://entitycodes.org/naics/481211/"
    },
    {
      "system": "NAICS 2022",
      "code": "481212",
      "title": "Nonscheduled Chartered Freight Air Transportation",
      "confidence": "chain",
      "via": "SIC1987:4522\u2192NAICS1997:481212\u21922002:481212\u21922007:481212\u21922012:481212\u21922017:481212\u21922022:481212",
      "url": "https://entitycodes.org/naics/481212/"
    },
    {
      "system": "NAICS 2022",
      "code": "487990",
      "title": "Scenic and Sightseeing Transportation, Other",
      "confidence": "chain",
      "via": "SIC1987:4522\u2192NAICS1997:48799\u21922002:487990\u21922007:487990\u21922012:487990\u21922017:487990\u21922022:487990",
      "url": "https://entitycodes.org/naics/487990/"
    }
  ],
  "ec:provenance": {
    "definition": {
      "source": "US OSHA 1987 SIC Manual",
      "type": "US gov \u2014 public domain"
    },
    "crosswalk": {
      "source": "Census NAICS\u2194SIC concordance",
      "method": "transitive chain (NOT direct)"
    }
  },
  "license": "https://www.usa.gov/government-works",
  "dateModified": "2026-07-21",
  "isPartOf": {
    "@type": "DefinedTerm",
    "identifier": "Major Group 45: Transportation by Air",
    "name": "SIC Major Group Major Group 45: Transportation by Air",
    "@id": "https://entitycodes.org/sic/group/Major Group 45: Transportation by Air/"
  }
}