{
  "contract": {
    "agency_name": "Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts",
    "amendment_count": 1,
    "category_code": "78140000",
    "contract_end_date": "2026-08-31",
    "contract_id": "CN4002864",
    "contract_start_date": "2023-09-01",
    "currency": "AUD",
    "current_reported_value": "2656787.54",
    "description": "Air Transport Services",
    "events": [
      {
        "absolute_change": "912680.54",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-89012ef220944cc98603fcc0ef35e046-1ee1c961de523ae698fe7d6e5a07c00a",
        "after_source_hash": "e94729cb4b9b2bef3955a1f8bcbb72c8bf0b57b51436c104710c4bcef81bf737",
        "before_release_id": "prod-89012ef220944cc98603fcc0ef35e046-0b184d7894713fbfa70397351f2280e8",
        "before_source_hash": "c22d47f44d7a552cb376a24e8fcfa3250e5a6de26d378e0bc9fd9f65e1964d8c",
        "contract_id": "CN4002864",
        "detected_at": "2025-07-25T05:22:22Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "008759bcd1e62e8fa88d645e4ba7d3596f99a31718fc27773296706ffa027c3c",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "2656787.54",
        "notice_id": "CN4002864-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/8d06b772-6564-46bf-9be4-e18a94955174",
        "old_value": "1744107.00",
        "percentage_change": "52.33",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002864",
        "summary": "Reported contract value increased by $912,680.54 (+52.33%)."
      }
    ],
    "evidence_path": "evidence/CN4002864.json",
    "latest_modified_at": "2025-07-25T05:22:22Z",
    "notice_id": "CN4002864-A1",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/8d06b772-6564-46bf-9be4-e18a94955174",
    "original_reported_value": "1744107.00",
    "procurement_method": "Limited tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002864",
    "supplier_name": "NORTHERN TERRITORY AIR SERVICES PTY",
    "title": "0041014438",
    "value_change": "912680.54",
    "value_change_percentage": "52.33",
    "versions": [
      {
        "agency_name": "Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts",
        "category_code": "78140000",
        "contract_end_date": "2026-08-31",
        "contract_id": "CN4002864",
        "contract_start_date": "2023-09-01",
        "currency": "AUD",
        "description": "Air Transport Services",
        "notice_id": "CN4002864",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/ae66d126-d430-4907-81c4-50e655107633",
        "procurement_method": "Limited tender",
        "reported_value": "1744107.00",
        "source_hash": "c22d47f44d7a552cb376a24e8fcfa3250e5a6de26d378e0bc9fd9f65e1964d8c",
        "source_modified_at": "2023-09-13T05:31:06Z",
        "source_release_id": "prod-89012ef220944cc98603fcc0ef35e046-0b184d7894713fbfa70397351f2280e8",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002864",
        "supplier_name": "NORTHERN TERRITORY AIR SERVICES PTY",
        "title": "0041014438"
      },
      {
        "agency_name": "Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts",
        "category_code": "78140000",
        "contract_end_date": "2026-08-31",
        "contract_id": "CN4002864",
        "contract_start_date": "2023-09-01",
        "currency": "AUD",
        "description": "Air Transport Services",
        "notice_id": "CN4002864-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/8d06b772-6564-46bf-9be4-e18a94955174",
        "procurement_method": "Limited tender",
        "reported_value": "2656787.54",
        "source_hash": "e94729cb4b9b2bef3955a1f8bcbb72c8bf0b57b51436c104710c4bcef81bf737",
        "source_modified_at": "2025-07-25T05:22:22Z",
        "source_release_id": "prod-89012ef220944cc98603fcc0ef35e046-1ee1c961de523ae698fe7d6e5a07c00a",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002864",
        "supplier_name": "NORTHERN TERRITORY AIR SERVICES PTY",
        "title": "0041014438"
      }
    ]
  },
  "disclaimer": "ContractDelta identifies changes in publicly reported procurement records. A change is not evidence of misconduct. Contract amendments can result from legitimate changes in scope, timing, pricing, reporting, or data correction.",
  "generated_at": "2026-07-17T05:22:06Z",
  "schema_version": "1.0",
  "source": {
    "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
    "coverage": {
      "amended_contracts_discovered": 851,
      "amended_contracts_selected": 20,
      "amended_contracts_skipped": 831,
      "max_amended_contracts": 20,
      "mode": "bounded_amendments",
      "query_end": "2026-07-20T23:59:59.999999Z",
      "query_start": "2026-07-12T00:00:00Z",
      "selection_method": "Explicit amendment contracts were ranked by current reported value, then source modification time and contract ID. Only the highest-ranked bounded set was processed."
    },
    "license": "https://creativecommons.org/licenses/by/3.0/au/",
    "name": "AusTender OCDS API",
    "publisher": "Australian Government Department of Finance"
  }
}