{"schemaVersion":"1.0","id":"final-approach-heathrow","dataset":"flights-24h","title":"Final approach: 24h into Heathrow","description":"Twenty-four hours of arrivals stacked into one day of approach.","methodology":"Aircraft descending within 0.35° of Heathrow, counted once an hour and bucketed by hour of day. OpenSky's free tier serves the present rather than the past, so this profile cannot be backfilled — it accumulates. Until a full day has been collected the graph is honestly partial, and each hour's figure is replaced on the next pass through it.","category":"aviation","categoryLabel":"Aviation","cadence":"live","placeholder":true,"landingPage":"https://londongraph.com/g/final-approach-heathrow","markdown":"https://londongraph.com/g/final-approach-heathrow/index.html.md","source":{"name":"OpenSky","url":"https://opensky-network.org/","licence":"OpenSky Network terms of use","licenceUrl":"https://opensky-network.org/about/terms-of-use"},"updatedAt":"2026-08-02T23:07:05.048Z","release":{"label":null,"publishedAt":null,"resourceUrl":null,"methodologyUrl":null,"sha256":null},"observations":null,"areaStatistics":null,"visualizations":[{"id":"overview","label":"Trend","description":"Twenty-four hours of arrivals stacked into one day of approach.","url":"https://londongraph.com/g/final-approach-heathrow","renderer":"primary","default":true,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null}],"availability":"metadata-only","note":"Live values are intentionally served by rate-limited application feeds, not this crawlable record."}