{
 "archiveEntity": {
  "countermeasures": [
   {
    "actor": "Swedavia",
    "generalOnly": true,
    "id": "arlanda-general-response-context",
    "incidentUse": "reported",
    "kind": "unspecified",
    "quote": "det är en standardprocedur, oavsett om det är en drönare eller en fågel",
    "quoteCheckedAt": "2026-10-17",
    "since": null,
    "sourceIndex": 3,
    "sourceUrl": "https://www.svt.se/nyheter/lokalt/stockholm/swedavia-efter-dronarlarmen-vi-kanner-oss-trygga",
    "statement": {
     "ar": "أعلنت Swedavia اتباع إجراء الأجسام المجهولة المعتاد؛ وهذا لا يؤكد وجود مسيّرة.",
     "en": "Swedavia reported following its standard unknown-object procedure; this does not confirm a drone.",
     "fa": "Swedavia اجرای رویه معمول اجسام ناشناس را گزارش کرد؛ این وجود پهپاد را تأیید نمی‌کند.",
     "ru": "Swedavia сообщила о стандартной процедуре для неизвестных объектов; это не подтверждает дрон.",
     "uk": "Swedavia повідомила про стандартну процедуру для невідомих об’єктів; це не підтверджує дрон."
    }
   }
  ],
  "key": "stockholm-arlanda-airport",
  "kind": "airport",
  "label": "Stockholm Arlanda Airport",
  "sourceIndex": 0
 },
 "assessment": null,
 "assessment_droneType_level": null,
 "assessment_droneType_range_high": null,
 "assessment_droneType_range_low": null,
 "assessment_droneType_subject": null,
 "assessment_operator_level": null,
 "assessment_operator_range_high": null,
 "assessment_operator_range_low": null,
 "assessment_operator_subject": null,
 "assessment_scale_version": null,
 "assessment_target_level": null,
 "assessment_target_range_high": null,
 "assessment_target_range_low": null,
 "assessment_target_subject": null,
 "attribution": "No operator or responsible organisation established by these sources; no criminal charge or conviction is asserted.",
 "attributionSources": [],
 "attributionStatus": "none",
 "autoCheckedAt": null,
 "category": "airport",
 "checkedAt": "2026-11-03",
 "claims": [
  {
   "assessment": "supports",
   "axis": "impact",
   "claimant": "Airport operations reported by SVT",
   "id": "reopening",
   "note": "Literal short passage checked in the original source; no independent confirmation inferred from republication.",
   "originId": "arlanda-operation-20240909",
   "quote": "03.30 kunde Arlanda öppna igen.",
   "quoteCheckedAt": "2026-10-15",
   "quoteTranslation": {},
   "relay": "relayed",
   "sourceIndex": 0,
   "statement": "SVT reports reopening at 03:30 local time."
  },
  {
   "assessment": "supports",
   "axis": "impact",
   "claimant": "Swedavia",
   "id": "operator-normal",
   "note": "Literal short passage checked in the original source; no independent confirmation inferred from republication.",
   "originId": "swedavia-20240909",
   "quote": "Enligt Swedavia ska det här inte leda till några förseningar under dagen",
   "quoteCheckedAt": "2026-10-15",
   "quoteTranslation": {},
   "relay": "relayed",
   "sourceIndex": 1,
   "statement": "Swedavia says normal traffic resumed without daytime delays."
  },
  {
   "assessment": "context",
   "axis": "drone",
   "claimant": "Swedish Police speaking directly to SVT",
   "id": "police-no-basis",
   "note": "Literal short passage checked in the original source; no independent confirmation inferred from republication.",
   "originId": "swedish-police-arlanda-202409",
   "quote": "Det finns helt enkelt inget att ta på, inget vi kan jobba vidare med",
   "quoteCheckedAt": "2026-11-03",
   "quoteTranslation": {},
   "relay": "relayed",
   "sourceIndex": 2,
   "statement": "Police say there is no basis to continue the investigation."
  },
  {
   "assessment": "supports",
   "axis": "context",
   "claimant": "Swedavia, quoted by Mitt i",
   "id": "later-operator-response",
   "note": "Distinct dated original contribution; other reports sharing this origin are not independent corroboration.",
   "originId": "swedavia-written-response-mitti-20250924",
   "quote": "har system för detektering av drönare",
   "quoteCheckedAt": "2026-11-03",
   "quoteTranslation": {},
   "relay": "relayed",
   "sourceIndex": 4,
   "statement": "The airport operator described a later detection-system response."
  }
 ],
 "corroboration": "curated",
 "country": "Sweden",
 "countryCode": "SE",
 "date": "2024-09-09",
 "dateKind": "event",
 "droneStatus": "inconclusive",
 "droneStatusSources": [
  0,
  2
 ],
 "droneTypes": [],
 "evidence": "The airport operator Swedavia separately confirms operational recovery through TV 4. Police directly tell SVT that the investigations lack a basis to continue; SVT says object identity remains unclear. The replacement follow-up supports inconclusive, not a proven star, aircraft or hoax. Multiple articles repeating police do not independently identify a drone. Mitt i obtained a separate written airport-operator comment in September 2025. That is a different original contribution from the police interview about closing the investigations.",
 "followUp": [],
 "id": "arlanda-airport-alarm-2024-09-09",
 "impact": "SVT reports closure around 02:00 and reopening at 03:30 local time, with five flights affected. TV 4 describes observations around 01:00 followed by immediate closure, also giving 03:30 reopening. The start time and diversion count differ; no exact duration is asserted.",
 "impactStatus": "confirmed",
 "impactStatusSources": [
  0,
  1
 ],
 "lat": 59.62,
 "locationPrecision": "region",
 "lon": 17.72,
 "media": [],
 "namedLocation": null,
 "operationalEffects": [],
 "outcome": [],
 "place": "Sigtuna, Stockholm County",
 "plainSummary": {},
 "publisherMedia": [],
 "reportTiming": null,
 "review": "editor",
 "revision": 4,
 "scope": "single",
 "series": [],
 "sources": [
  {
   "family": "svt",
   "label": "SVT: Arlanda closure; article updated16September",
   "published": "2024-09-09",
   "publishedAt": "2024-09-09T03:11:00+02:00",
   "url": "https://www.svt.se/nyheter/lokalt/stockholm/arlanda-stangs-flygplan-dirigeras-om-till-skavsta"
  },
  {
   "family": "tv4",
   "label": "TV4: alarm and airport operator account",
   "published": "2024-09-09",
   "url": "https://www.tv4.se/artikel/6Se0MhOJbAXegXct99JZ57/all-flygtrafik-stoppades-pa-arlanda-i-natt"
  },
  {
   "family": "svt",
   "label": "SVT: all Arlanda investigations closed; police directly interviewed",
   "published": "2024-09-20",
   "publishedAt": "2024-09-20T10:37:00+02:00",
   "url": "https://www.svt.se/nyheter/lokalt/stockholm/samtliga-utredningar-om-dronarlarm-vid-arlanda-nedlagda"
  },
  {
   "family": "svt",
   "label": "Arlanda: general response context",
   "published": "2024-09-13",
   "url": "https://www.svt.se/nyheter/lokalt/stockholm/swedavia-efter-dronarlarmen-vi-kanner-oss-trygga"
  },
  {
   "family": "mitti",
   "label": "Mitt i: later written airport-operator response",
   "language": "sv",
   "published": "2025-09-24",
   "publisher": "Mitt i",
   "url": "https://www.mitti.se/nyheter/nu-kan-arlanda-upptacka-dronarhot-6.3.319325.03260a1fa7"
  }
 ],
 "summary": "A suspected-drone alarm interrupted flights at Stockholm Arlanda Airport overnight on 9 September 2024. Police later closed the investigations without establishing whether drones were present. In September 2025, airport operator Swedavia told Mitt i that it had drone detection systems; that later statement did not establish what was seen during the 2024 alarm.",
 "timeline": [
  {
   "date": "2024-09-09",
   "source": 0,
   "text": "A reported sighting or alarm led to the documented airport restriction; see the source-bound claims and uncertainty below."
  },
  {
   "date": "2025-09-24",
   "source": 4,
   "text": "Mitt i reports the airport operator saying it has drone detection systems. This later response is not identification of the objects reported in September 2024."
  }
 ],
 "title": "Unresolved drone alarm temporarily closes Stockholm Arlanda Airport",
 "unknown": "This dossier concerns the first overnight closure, not subsequent alarms on later evenings. Drone identity, count, operator and motive remain unresolved. The displayed point represents Sigtuna municipality, not an airport or drone coordinate. The later operator statement does not establish an installation date, system specification, effectiveness, or retrospective identification of the 2024 observations.",
 "updatedAt": "2026-11-03",
 "windowBasis": null,
 "windowEnd": null,
 "windowStart": null
}