1951 Canadian Pacific Air Lines Douglas DC-4 disappearance
type: Thing
alternate name: Canadian Pacific Air Lines Flight 3505
description: 1951 missed passenger plane flight
additional property: PropertyValue
  property ID: P17
  value: Canada
additional property: PropertyValue
  property ID: P31
  value: aviation accident
additional property: PropertyValue
  property ID: P137
  value: Canadian Pacific Air Lines
additional property: PropertyValue
  property ID: P585
  value: July 21, 1951
additional property: PropertyValue
  property ID: P646
  value: /m/0gg6z6d
additional property: PropertyValue
  property ID: P1120
  value: +37
additional property: PropertyValue
  property ID: P1427
  value: Vancouver International Airport
additional property: PropertyValue
  property ID: P1444
  value: Tokyo International Airport
additional property: PropertyValue
  property ID: P1755
  value: 19510721-0
confidence:
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    score pct: 0
    tier: long_tail
    components:
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      sitelinks norm: 0.012
      unique citations: 0
      unique citations norm: 0.0
      monthly pageviews: 0
      monthly pageviews norm: 0.0
  sitelinks: 5
  unique citations: 0
  monthly pageviews: 0
  yearly pageviews: 152
  pageview trend:
    m: 2026-06
    v: 106
  pageview trend:
    m: 2026-05
    v: 9
  pageview trend:
    m: 2026-05
    v: 5
  pageview trend:
    m: 2026-04
    v: 27
  pageview trend:
    m: 2026-04
    v: 5
  popularity:
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    max: 423
    pct: 1.2
  tier: long_tail
claims:
  P17:
    value: Q16
    source count: 0
    confidence: 0.0
    value label: Canada
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    source count: 0
    confidence: 0.0
    value label: aviation accident
  P137:
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    source count: 1
    confidence: 0.2
    value label: Canadian Pacific Air Lines
  P585:
    value: +1951-07-21T00:00:00Z
    source count: 1
    confidence: 0.2
  P646:
    value: /m/0gg6z6d
    source count: 0
    confidence: 0.0
  P1120:
    value:
      amount: +37
    source count: 1
    confidence: 0.2
  P1427:
    value: Q321224
    source count: 1
    confidence: 0.2
    value label: Vancouver International Airport
  P1444:
    value: Q204853
    source count: 1
    confidence: 0.2
    value label: Tokyo International Airport
  P1755:
    value: 19510721-0
    source count: 0
    confidence: 0.0
meta:
  wikidata id: Q4567118
  domain: aviation_accident
  level: standard
  html url: https://4ort.xyz/entity/1951-canadian-pacific-air-lines-douglas-dc-4-disappearance
  markdown url: https://4ort.xyz/entity/1951-canadian-pacific-air-lines-douglas-dc-4-disappearance.md
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  facts url full: https://4ort.xyz/entity/1951-canadian-pacific-air-lines-douglas-dc-4-disappearance/facts.json
  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-01T05:15:02.727722Z
  entity updated at: 2026-05-03T21:19:00.258443+00:00Z
  entity created at: 2026-04-10T23:58:21.797958+00:00Z