{"schemaVersion":1,"researchDateUTC":"2026-10-14","projection":{"source":"EPSG:2326","output":"EPSG:4326","definition":"+proj=tmerc +lat_0=22.31213333333334 +lon_0=114.1785555555556 +k=1 +x_0=836694.05 +y_0=819069.8 +ellps=intl +towgs84=-162.619,-276.959,-161.764,0.067753,-2.243648,-1.158828,-1.094246 +units=m +no_defs","implementation":"scripts/terrain-sampler.mjs existing hkToWGS","note":"No shared code changed."},"sources":[{"id":"landsd-airport-location-search","title":"LandsD Location Search API","publisher":"Lands Department, HKSAR Government","url":"https://portal.csdi.gov.hk/csdi-webpage/apidoc/LocationSearchAPI","datasetURL":"https://data.gov.hk/en-data/dataset/hk-landsd-openmap-development-location-search-api","downloadURL":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q={query}","licence":{"status":"reusePermittedWithTerms","name":"HKSAR Government / DATA.GOV.HK and CSDI terms; not Creative Commons","urls":["https://data.gov.hk/en/terms-and-conditions","https://portal.csdi.gov.hk/csdi-webpage/doc/TNC"],"summary":"Commercial and non-commercial reproduction/distribution allowed subject to terms, source/IP acknowledgement and attribution. No accuracy or continuity warranty."},"attribution":"Location data © HKSAR Government, Lands Department; CSDI Portal and DATA.GOV.HK.","freshness":"Snapshot retrieved 2026-10-14 UTC. No per-record survey/update date supplied.","granularity":"Named facilities with bilingual names/addresses and HK80 x/y; no floor or entrance-path guarantee.","downloadStatus":"success","rawFiles":[{"file":"data/research/airport-round2/raw/landsd-car-park-3.json","url":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q=Hong%20Kong%20International%20Airport%20Car%20Park%203","retrieved":"2026-10-14T20:08:29.380Z","bytes":529,"sha256":"e9d3295f49c42e805707c4ae60da3635d0797855d5fec906327163d470121efb","success":true},{"file":"data/research/airport-round2/raw/landsd-search-0.json","url":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q=Hong%20Kong%20International%20Airport","retrieved":"2026-10-14T20:07:50.243Z","retrievalTimeBasis":"download file modification time","success":true,"bytes":13541,"sha256":"1b562602c22234ab56d7e3058ec765bb0f8ec89d00ecd8b2d8244fb93f9ffb05","records":50},{"file":"data/research/airport-round2/raw/landsd-search-1.json","url":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q=Terminal%202","retrieved":"2026-10-14T20:07:49.311Z","retrievalTimeBasis":"download file modification time","success":true,"bytes":6166,"sha256":"e291e94b230a03644909c47be492877b3f532107ad91cd4963f5ae72a4b50c31","records":19},{"file":"data/research/airport-round2/raw/landsd-search-2.json","url":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q=SkyPier","retrieved":"2026-10-14T20:07:48.563Z","retrievalTimeBasis":"download file modification time","success":true,"bytes":1696,"sha256":"ea4d4425ea7ad35de9cf957d40ca5eeb1a15c86568c856955d2528a38aa72f14","records":6},{"file":"data/research/airport-round2/raw/landsd-search-3.json","url":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q=Airport%20Ground%20Transportation%20Centre","retrieved":"2026-10-14T20:07:48.663Z","retrievalTimeBasis":"download file modification time","success":true,"bytes":597,"sha256":"dc24b649ebdd944abf8390d855710eb49fc231dca8a540e479457ab93e4a9049","records":2},{"file":"data/research/airport-round2/raw/landsd-search-4.json","url":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q=Hong%20Kong-Zhuhai-Macao%20Bridge%20Hong%20Kong%20Port","retrieved":"2026-10-14T20:07:49.335Z","retrievalTimeBasis":"download file modification time","success":true,"bytes":11675,"sha256":"e3a63e85c727974104c285862b5f94a9c1ff054623b43c6c7e892a9d2b5ee448","records":30},{"file":"data/research/airport-round2/raw/landsd-search-5.json","url":"https://www.map.gov.hk/gs/api/v1.0.0/locationSearch?q=Airport%20Passenger%20Terminal","retrieved":"2026-10-14T20:07:48.463Z","retrievalTimeBasis":"download file modification time","success":true,"bytes":1081,"sha256":"a618c096b2540cb931ef19d1d190ad571791a42f2cc39b671dec51b7f5390544","records":3}],"countUsed":7,"limitations":["Not a complete terminal facilities database.","Exact names selected; previous-name SkyPier entry not mistaken for an additional facility.","Duplicate Car Park 3 records differ less than one metre; first precise point retained.","A general HONG KONG INTERNATIONAL AIRPORT point lies over the airfield and was deliberately not used as a passenger destination.","Read-only bounded API queries; production should cache and avoid request bursts."],"checked":"2026-10-14"},{"id":"aahk-flight-historical","title":"Flight Information (Historical)","publisher":"Airport Authority Hong Kong","url":"https://data.gov.hk/en-data/dataset/aahk-team1-flight-info","documentationURL":"https://www.hongkongairport.com/iwov-resources/misc/opendata/Flight_Information_DataSpec_en.pdf","downloadURL":"https://www.hongkongairport.com/flightinfo-rest/rest/flights/past?date={YYYY-MM-DD}&lang={en|zh_HK|zh_CN}&cargo={boolean}&arrival={boolean}","licence":{"status":"reusePermittedWithTerms","name":"HKSAR Government / DATA.GOV.HK and CSDI terms; not Creative Commons","urls":["https://data.gov.hk/en/terms-and-conditions","https://portal.csdi.gov.hk/csdi-webpage/doc/TNC"],"summary":"Specifically published AAHK dataset under DATA.GOV.HK terms. Attribute Airport Authority Hong Kong and DATA.GOV.HK. This does not license general HKIA website material."},"attribution":"Flight data © Airport Authority Hong Kong; DATA.GOV.HK.","freshness":"Daily, through the previous calendar day.","granularity":"Passenger/cargo arrival/departure historical records; terminal, status, gate/check-in or baggage fields where provided.","classification":"historicalOperationalSnapshot","isLive":false,"downloadStatus":"blocked403","limitations":["Published description calls it flight schedule information, but payload specification contains historical status and operational fields; it is neither a current timetable feed nor a live board.","Direct sample for 2026-10-13 and PDF download returned HTTP 403; specification was readable through web research. No API data ingested and no restriction bypass attempted.","No verified public reusable live flight API found in this bounded official-source review. Absence of discovery is not proof no partner feed exists.","Do not reuse historical terminal/gate/aisle assignments for a future passenger."],"checked":"2026-10-14"},{"id":"mtr-ael-next-train","title":"Real-time MTR train information","publisher":"MTR Corporation Limited","url":"https://data.gov.hk/en-data/dataset/mtr-data2-nexttrain-data","documentationURL":"https://opendata.mtr.com.hk/doc/Next_Train_API_Spec_v1.7.pdf","dictionaryURL":"https://opendata.mtr.com.hk/doc/Next_Train_DataDictionary_v1.7.pdf","downloadURL":"https://rt.data.gov.hk/v1/transport/mtr/getSchedule.php?line=AEL&sta=AIR&lang=EN","licence":{"status":"reusePermittedWithTerms","name":"HKSAR Government / DATA.GOV.HK and CSDI terms; not Creative Commons","urls":["https://data.gov.hk/en/terms-and-conditions","https://portal.csdi.gov.hk/csdi-webpage/doc/TNC"],"summary":"Data published on DATA.GOV.HK; attribute MTR Corporation Limited and DATA.GOV.HK. Linked documentation contains copyright notices; link to documents rather than republishing them."},"attribution":"Train information © MTR Corporation Limited; DATA.GOV.HK.","freshness":"Provider advertises every 10 seconds.","classification":"liveServiceWithEstimatedTimes","downloadStatus":"success","rawFiles":[{"file":"data/research/airport-round2/raw/mtr-ael-air.json","url":"https://rt.data.gov.hk/v1/transport/mtr/getSchedule.php?line=AEL&sta=AIR&lang=EN","retrieved":"2026-10-14T20:08:44.815Z","bytes":1060,"sha256":"ddb006ec6592709dc5e14c00897da480ebc8ab79d9045f29d3b45b743ec423ca","success":true}],"sampleProviderTime":"2026-10-15 04:08:42","providerTimezone":"Asia/Hong_Kong","sampleOnly":true,"limitations":["API response is an archived research sample, not current service data.","v1.7 marks ttnt, valid and source as dummy/N/A. Use time plus provider timestamps; do not interpret source + as a documented schedule flag.","UP at AIR can lead to AWE; DOWN to HOK. Do not reverse the destinations.","Handle status=0, absent arrays, special-service URLs, stale clocks, HTTP429 and network failure.","No train crowding, guaranteed departure or door/terminal route inferred."],"checked":"2026-10-14"},{"id":"aahk-t2-commissioning","title":"T2 departures facilities commence operations","publisher":"Airport Authority Hong Kong","url":"https://www.hongkongairport.com/en/media-centre/press-release/2026/pr_1868","date":"2026-05-27","licence":{"status":"editorialFactsAndLinksOnly","name":"AAHK website copyright; no blanket open licence","urls":["https://www.hongkongairport.com/en/terms-of-use.page"],"summary":"General HKIA website content is copyrighted and its terms restrict republication/adaptation without approval. Link to official services and summarize limited public facts in original wording; do not mirror floor plans, photos, directories or private JSON. Separately registered open datasets must be assessed on their own stated terms."},"freshness":"Dated commissioning event, checked 2026-10-14 UTC.","findings":["T2 departure facilities commenced operating on 27 May 2026.","Provides a newer baseline than the still-indexed T1-extension closure page."],"checked":"2026-10-14"},{"id":"aahk-t2-passenger-access","title":"T2 departures passenger access","publisher":"Airport Authority Hong Kong","url":"https://www.hongkongairport.com/en/media-centre/news-stories-updates/HKIA_T2_Departure","date":"2026-05-15","licence":{"status":"editorialFactsAndLinksOnly","name":"AAHK website copyright; no blanket open licence","urls":["https://www.hongkongairport.com/en/terms-of-use.page"],"summary":"General HKIA website content is copyrighted and its terms restrict republication/adaptation without approval. Link to official services and summarize limited public facts in original wording; do not mirror floor plans, photos, directories or private JSON. Separately registered open datasets must be assessed on their own stated terms."},"freshness":"Pre-opening guidance supported by later commissioning release; terminal allocations still require live checks.","findings":["Airport Express platform serves T1 and T2.","Covered walkway between T2 and Car Park 3.","Do not infer that all future T2 phases or arrivals operations are complete."],"checked":"2026-10-14"},{"id":"aahk-airline-directory","title":"Airline Information","publisher":"Airport Authority Hong Kong","url":"https://www.hongkongairport.com/en/flights/airlines-information/airlines.page","licence":{"status":"editorialFactsAndLinksOnly","name":"AAHK website copyright; no blanket open licence","urls":["https://www.hongkongairport.com/en/terms-of-use.page"],"summary":"General HKIA website content is copyrighted and its terms restrict republication/adaptation without approval. Link to official services and summarize limited public facts in original wording; do not mirror floor plans, photos, directories or private JSON. Separately registered open datasets must be assessed on their own stated terms."},"freshness":"Dynamic directory, no publication date shown.","findings":["Terminal/check-in aisle/transfer desk fields available on official website.","Link at decision time; no wholesale directory copying."],"checked":"2026-10-14"},{"id":"aahk-flight-board","title":"Official flight information","publisher":"Airport Authority Hong Kong","url":"https://www.hongkongairport.com/en/flights/departures/passenger.page","additionalURLs":["https://www.hongkongairport.com/en/flights/arrivals/passenger.page"],"licence":{"status":"editorialFactsAndLinksOnly","name":"AAHK website copyright; no blanket open licence","urls":["https://www.hongkongairport.com/en/terms-of-use.page"],"summary":"General HKIA website content is copyrighted and its terms restrict republication/adaptation without approval. Link to official services and summarize limited public facts in original wording; do not mirror floor plans, photos, directories or private JSON. Separately registered open datasets must be assessed on their own stated terms."},"freshness":"Official website displays an update field; no API freshness contract established.","findings":["Use official board as current-flight handoff.","Do not probe undocumented website endpoints or claim the historical open API is live."],"checked":"2026-10-14"},{"id":"aahk-skypier-transfer","title":"SkyPier ferry transfer requirements","publisher":"Airport Authority Hong Kong","url":"https://www.hongkongairport.com/en/transport/mainland-connection/ferry-transfer.page?componentID=1502440887357&submit=true","licence":{"status":"editorialFactsAndLinksOnly","name":"AAHK website copyright; no blanket open licence","urls":["https://www.hongkongairport.com/en/terms-of-use.page"],"summary":"General HKIA website content is copyrighted and its terms restrict republication/adaptation without approval. Link to official services and summarize limited public facts in original wording; do not mirror floor plans, photos, directories or private JSON. Separately registered open datasets must be assessed on their own stated terms."},"freshness":"Current passenger guidance, checked 2026-10-14 UTC; requirements can change.","findings":["Transfer-only access matters more than geographic proximity.","Air-to-sea instructions warn against entering Hong Kong immigration/baggage reclaim before transfer.","Do not connect the pier to normal public walking/ferry routing."],"checked":"2026-10-14"},{"id":"td-hzmb-access","title":"Access to Hong Kong-Zhuhai-Macao Bridge Hong Kong Port","publisher":"Transport Department, HKSAR Government","url":"https://www.td.gov.hk/en/transport_in_hong_kong/land_based_cross_boundary_transport/access_to_hzmb_hong_kong_port/index.html","licence":{"status":"factualSummaryAndOfficialLink","summary":"Government informational page used for a short original factual summary; not ingested as a machine-readable timetable.","urls":["https://www.td.gov.hk/en/transport_in_hong_kong/land_based_cross_boundary_transport/access_to_hzmb_hong_kong_port/index.html"]},"freshness":"Current access page researched 2026-10-14 UTC; fares and routes can change.","findings":["B4 is listed for airport/SKYCITY connection.","Do not apply dated pandemic service-suspension notices as current guidance."],"checked":"2026-10-14"},{"id":"aahk-special-needs-transport","title":"Transport for Special Needs","publisher":"Airport Authority Hong Kong","url":"https://www.hongkongairport.com/en/transport/to-from-airport/transport-for-special-needs.page","licence":{"status":"editorialFactsAndLinksOnly","name":"AAHK website copyright; no blanket open licence","urls":["https://www.hongkongairport.com/en/terms-of-use.page"],"summary":"General HKIA website content is copyrighted and its terms restrict republication/adaptation without approval. Link to official services and summarize limited public facts in original wording; do not mirror floor plans, photos, directories or private JSON. Separately registered open datasets must be assessed on their own stated terms."},"freshness":"No publication date shown; advance-booking arrangements require operator confirmation.","findings":["Official page offers advance-booked mobility transport contacts.","Rehabus listing says Hong Kong residents only; not interchangeable with all visitor services.","No point coordinate implies wheelchair accessibility."],"checked":"2026-10-14"},{"id":"aahk-parking-map","title":"Parking and Transport Facilities Map","publisher":"Airport Authority Hong Kong","url":"https://www.hongkongairport.com/en/transport/parking/parking-map.page","licence":{"status":"editorialFactsAndLinksOnly","name":"AAHK website copyright; no blanket open licence","urls":["https://www.hongkongairport.com/en/terms-of-use.page"],"summary":"General HKIA website content is copyrighted and its terms restrict republication/adaptation without approval. Link to official services and summarize limited public facts in original wording; do not mirror floor plans, photos, directories or private JSON. Separately registered open datasets must be assessed on their own stated terms."},"freshness":"Current official map link; original plan not downloaded or redistributed.","findings":["Use official map link for detailed parking access.","No real-time vacancy API verified in this round."],"checked":"2026-10-14"},{"id":"cad-total-flights-monthly","title":"Number of total flights handled","publisher":"Civil Aviation Department, HKSAR Government","url":"https://data.gov.hk/en-data/dataset/hk-cad-cadpsi1-aircraft-data/resource/d6c88fef-7933-4fd8-b2fb-880e97dc0873","downloadURL":"https://www.cad.gov.hk/datagovhk/PSI_Aircraft_Data.csv","licence":{"status":"reusePermittedWithTerms","name":"HKSAR Government / DATA.GOV.HK and CSDI terms; not Creative Commons","urls":["https://data.gov.hk/en/terms-and-conditions","https://portal.csdi.gov.hk/csdi-webpage/doc/TNC"],"summary":"Commercial and non-commercial reproduction/distribution allowed subject to terms, source/IP acknowledgement and attribution. No accuracy or continuity warranty."},"attribution":"Aviation statistics © HKSAR Government, Civil Aviation Department; DATA.GOV.HK.","freshness":"Monthly; portal last updated 2026-10-03; downloaded CSV extends to September 2026.","classification":"aggregateStatistics","downloadStatus":"success","rawFiles":[{"file":"data/research/airport-round2/raw/cad-monthly-aircraft.csv","url":"https://www.cad.gov.hk/datagovhk/PSI_Aircraft_Data.csv","retrieved":"2026-10-14T20:08:28.500Z","bytes":3045,"sha256":"fcf871bc333565dbf2d89bf04ba2ef3c0cd05a93ceb005b460cf99fb662808f1","success":true}],"limitations":["Aggregate flights handled are not a live flight list, gate feed, terminal capacity or queue measure.","Do not label these totals as airport passenger-flight movements without validating the statistical definition."],"recommendation":"Archive for context only; low value for immediate passenger wayfinding.","checked":"2026-10-14"},{"id":"fehd-hzmb-toilet","title":"FEHD public toilet location","publisher":"Food and Environmental Hygiene Department, HKSAR Government","url":"https://www.fehd.gov.hk/english/map/index.html","licence":{"status":"reusePermittedWithTerms","name":"HKSAR Government / DATA.GOV.HK and CSDI terms; not Creative Commons","urls":["https://data.gov.hk/en/terms-and-conditions","https://portal.csdi.gov.hk/csdi-webpage/doc/TNC"],"summary":"Commercial and non-commercial reproduction/distribution allowed subject to terms, source/IP acknowledgement and attribution. No accuracy or continuity warranty."},"freshness":"Existing project official snapshot; only enrich existing record everyday-fehd-1344.","limitations":["Not an inventory of terminal-internal toilets.","Photo and point do not prove live availability."],"checked":"2026-10-14"},{"id":"cirium-fids","title":"Cirium FlightStats FIDS","publisher":"Cirium","url":"https://developer.cirium.com/apis/flightstats-apis/fids","licence":{"status":"commercialContractRequired","url":"https://developer.cirium.com/apis/flightstats-apis/fids"},"checked":"2026-10-14","detailsFile":"data/research/airport-round2/live-flight-feasibility.json","downloadStatus":"notTestedNoCredentials","limitations":["No HKIA-specific coverage guarantee established.","No public display licence purchased or credentials provisioned."]},{"id":"flightaware-aeroapi","title":"FlightAware AeroAPI","publisher":"FlightAware","url":"https://www.flightaware.com/commercial/aeroapi/","licence":{"status":"commercialContractRequired","url":"https://www.flightaware.com/commercial/aeroapi/AeroAPI_Premium_License_Jan2025.pdf"},"checked":"2026-10-14","detailsFile":"data/research/airport-round2/live-flight-feasibility.json","downloadStatus":"notTestedNoCredentials","limitations":["No HKIA-specific coverage guarantee established.","No public display licence purchased or credentials provisioned."]}]}