{
 "publisher": "DroneLedger",
 "site": "https://droneincidents.com",
 "generated": "2026-10-16T02:26:41+00:00",
 "release": "20261016T022641844182-b347e0",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "DroneLedger (droneincidents.com)",
  "excludes": "Quoted source passages and linked articles remain the copyright of their publishers; they are included as short quotations for verification. Linked media and satellite images remain the rights holders' property; no image or video licence is granted by this dataset. Fonts (SIL OFL) and map data (Natural Earth, public domain) keep their own terms. City and region names in automatically published dossiers are checked against GeoNames (geonames.org, CC BY 4.0). Drone drawings and animations are schematic illustrations of a type, not evidence about any incident."
 },
 "assessmentNote": "DroneLedger assessment, not a finding. Editorial likelihood bands, not calibrated statistical confidence intervals. Unknown has no numeric probability. Outcomes are attributed reports; no totals or inference of intent from a hit.",
 "assessmentScale": {
  "version": "di-estimative-v1",
  "levels": {
   "almost_certain": {
    "low": 95,
    "high": 99
   },
   "very_likely": {
    "low": 80,
    "high": 95
   },
   "likely": {
    "low": 55,
    "high": 80
   },
   "roughly_even_chance": {
    "low": 45,
    "high": 55
   },
   "unlikely": {
    "low": 20,
    "high": 45
   },
   "very_unlikely": {
    "low": 5,
    "high": 20
   },
   "almost_no_chance": {
    "low": 1,
    "high": 5
   },
   "unknown": {
    "low": null,
    "high": null
   }
  }
 },
 "evidenceNote": "Each dossier separates three claims: drone presence, impact and attribution, each with its own evidence state and supporting sources. 'reported' means a source describes the claim without sufficient identification evidence; claims by parties to a conflict are never 'confirmed' on their own. Counts reflect dossiers in this curated archive, not all incidents worldwide. windowStart/windowEnd are reporting-window calendar bounds, not individual event days; legacy date remains the compatibility/sorting date for such records.",
 "locationNote": "lat/lon are the dossier's own approximate coordinates (see locationPrecision) and are empty when the incident location is unknown. referencePoint {lat, lon, level, name} is a display reference only: a fixed point in the named city (GeoNames), region (its administrative seat), sea or country (Natural Earth label point), derived at build time. It is not a geolocation, not an estimate of the incident location and may change when the dossier's place becomes more precise: reference point; incident location unknown.",
 "detailsNote": "media, operationalEffects, followUp and archiveEntity are editorial, source-indexed additions. Media is publisher-link only, has its own evidence status and never establishes drone presence or attribution. Debunked original-media links are removed; archived revisions omit media references. archivePattern is computed from mapped published event records at generated time, not a worldwide incident count. Null asOf means not established; publication time is not substituted.",
 "dataset": {
  "doi": "10.5281/zenodo.23345422",
  "url": "https://doi.org/10.5281/zenodo.23345422",
  "note": "Citable weekly snapshot (CSV + JSON) archived on Zenodo; this DOI always resolves to the latest version."
 },
 "howToCite": "Cite the dossier URL and revision, e.g. DroneLedger, “Wine Trader hit off Romania; president says drones struck the ship”, dossier wine-trader-fire-off-romania-2026-10-15, revision 4, updated 2026-10-15. https://droneincidents.com/incident/wine-trader-fire-off-romania-2026-10-15/",
 "incident": {
  "id": "changi-airport-drone-weather-disruption-2019-06-24",
  "title": "Changi flights disrupted by reported drones and bad weather on 24 June 2019",
  "place": "Singapore",
  "country": "Singapore",
  "countryCode": "SG",
  "date": "2019-06-24",
  "dateKind": "event",
  "scope": "single",
  "category": "airport",
  "droneStatus": "reported",
  "impactStatus": "confirmed",
  "attributionStatus": "none",
  "lat": 1.35,
  "lon": 103.82,
  "locationPrecision": "region",
  "summary": "Reported unauthorised drone activity and bad weather disrupted flights at Changi Airport on the night of 24 June 2019. This was a separate event from the night of 18–19 June.",
  "impact": "CNA reports about 18 delayed flights and seven diversions for 24 June, attributing disruption jointly to drone activity and bad weather. It does not isolate a drone-only share. The ministry’s later 55 delays and eight diversions combine two nights and must not be assigned to this night alone.",
  "evidence": "The transport ministry reply and the defence-minister interview are distinct original statements, with partly shared government and airport reporting behind their operational figures. Neither provides independent technical identification for this specific night.",
  "unknown": "No device count, model or operator established. No assertion that the whole airport closed, that all disruption was caused by drones, or that general drone prosecutions concerned this event. Source publication dates are later than the explicitly described local 24 June event. This shares one archiveEntity with the separate 18–19 June dossier; do not merge or double-count their flights.",
  "attribution": "No operator or responsible organisation established by the reviewed sources.",
  "sources": [
   {
    "label": "Singapore Ministry of Transport: parliamentary reply on the two June nights",
    "url": "https://www.mot.gov.sg/news-resources/newsroom/oral-reply-by-senior-minister-of-state-for-transport-dr-lam-pin-min-to-parliamentary-questions-on-counter-uas-measures/",
    "published": "2019-07-08",
    "family": "singapore-mot"
   },
   {
    "label": "CNA / TODAY: interview and separate 24 June disruption",
    "url": "https://www.channelnewsasia.com/singapore/changi-airport-drone-incursions-getting-top-level-attention-minister-warns-punitive-action-5704076",
    "published": "2019-06-30",
    "family": "mediacorp"
   }
  ],
  "timeline": [
   {
    "date": "2019-06-24",
    "text": "Reported unauthorised drone activity and bad weather disrupted flights at Changi Airport on the night of 24 June 2019. This was a separate event from the night of 18–19 June.",
    "source": 0
   }
  ],
  "droneStatusSources": [
   0,
   1
  ],
  "impactStatusSources": [
   0,
   1
  ],
  "attributionSources": [],
  "droneTypes": [],
  "claims": [
   {
    "id": "combined-ministry-total",
    "axis": "drone",
    "statement": "The ministry’s combined June count is background, not this night’s total.",
    "quote": "55 flights delays and 8 diversions",
    "claimant": "Singapore Ministry of Transport",
    "originId": "singapore-mot-reply-20190708",
    "relay": "relayed",
    "assessment": "context",
    "note": "Short literal passage read on the public source page; reported drone presence is not technical identification.",
    "sourceIndex": 0,
    "quoteCheckedAt": "2026-10-16",
    "quoteTranslation": {}
   },
   {
    "id": "delays-this-night",
    "axis": "impact",
    "statement": "CNA gives an approximate delayed-flight count for the later night.",
    "quote": "18 or so departing and arriving flights were delayed",
    "claimant": "CNA / TODAY operational reporting",
    "originId": "changi-operations-20190624",
    "relay": "relayed",
    "assessment": "supports",
    "note": "Short literal passage read on the public source page; reported drone presence is not technical identification.",
    "sourceIndex": 1,
    "quoteCheckedAt": "2026-10-16",
    "quoteTranslation": {}
   }
  ],
  "review": "editor",
  "checkedAt": "2026-10-15",
  "autoCheckedAt": null,
  "updatedAt": "2026-10-16",
  "revision": 1,
  "series": [],
  "windowStart": null,
  "windowEnd": null,
  "windowBasis": null,
  "assessment": null,
  "outcome": [],
  "assessment_scale_version": null,
  "assessment_operator_subject": null,
  "assessment_operator_level": null,
  "assessment_operator_range_low": null,
  "assessment_operator_range_high": null,
  "assessment_target_subject": null,
  "assessment_target_level": null,
  "assessment_target_range_low": null,
  "assessment_target_range_high": null,
  "assessment_droneType_subject": null,
  "assessment_droneType_level": null,
  "assessment_droneType_range_low": null,
  "assessment_droneType_range_high": null,
  "media": [],
  "operationalEffects": [],
  "followUp": [],
  "archiveEntity": {
   "key": "changi-airport",
   "kind": "airport",
   "label": "Singapore Changi Airport",
   "sourceIndex": 0
  },
  "namedLocation": null,
  "publisherMedia": [],
  "archivePattern": {
   "asOf": "2026-10-16T02:26:41+00:00",
   "entityKey": "changi-airport",
   "windows": [
    {
     "days": 30,
     "records": [
      {
       "id": "changi-airport-drone-disruption-2019-06-18",
       "date": "2019-06-18",
       "revision": 1,
       "droneStatus": "reported"
      }
     ]
    },
    {
     "days": 90,
     "records": [
      {
       "id": "changi-airport-drone-disruption-2019-06-18",
       "date": "2019-06-18",
       "revision": 1,
       "droneStatus": "reported"
      }
     ]
    }
   ],
   "note": "Only published archive records with an editorial entity mapping; unassigned records excluded. Not all real-world incidents or a common cause. No same-day matching."
  },
  "impactReports": [],
  "corroboration": "curated",
  "interceptionReported": {
   "evidenceState": "reported",
   "note": "Official aggregate claims, not independently verified kills. Parts are included only when explicitly sourced and sum to the reported total. Catalogue countermeasures are not incident evidence.",
   "counts": []
  },
  "referencePoint": null,
  "labels": {
   "category": "Airport disruption",
   "droneStatus": "Reported",
   "impactStatus": "Confirmed",
   "attributionStatus": "Not established"
  },
  "url": "https://droneincidents.com/incident/changi-airport-drone-weather-disruption-2019-06-24/",
  "citation": "DroneLedger, “Changi flights disrupted by reported drones and bad weather on 24 June 2019”, dossier changi-airport-drone-weather-disruption-2019-06-24, revision 1, updated 2026-10-16. https://droneincidents.com/incident/changi-airport-drone-weather-disruption-2019-06-24/",
  "history": [
   {
    "revision": 1,
    "date": "2026-10-16",
    "at": "2026-10-16T00:46:41.560+00:00",
    "note": "Curated dossier created after checking the cited sources line by line."
   }
  ]
 }
}