Live 即時
Statistics 統計
Flights per day by route 每日航路
When is W8 used? W8 使用時段
Share of W8 among flights classified W2 or W8, by weekday and departure hour (Taiwan time). W8 is only available with military approval.
By city pair 各航線
Flights 航班
Download CSVClick a flight to show its recorded track on the map, including unresolved ones.
Method 方法
Positions come from the OpenSky Network (ADS-B), polled every 30 s from 06:30 to 22:30 Taiwan time. A flight cannot use both airways, so each one is classified by the gate it passes:
- W2: the track passes within 15 NM of GENIE.
- W8: the track passes within 15 NM of the midpoint between TONNY and DEFOE.
The two gates are about 44 NM apart (drawn on the map), so they can't both be passed on one leg. Sparse tracks are tested segment by segment, but a long coverage gap can't fake a passage. If the data has a gap exactly at the gate, the flight is assigned to the airway most of its positions are nearer (within 15 NM), at lower confidence. Air return means the aircraft flew toward Matsu, turned back (for example a go-around followed by a return to Taiwan), and landed in Taiwan again; the outbound and return airways are shown, e.g. "W8 → W2". No data means too few positions were received to decide.
Each afternoon a backfill uses OpenSky's historical flights and tracks for the previous day. It fills gaps, and it covers the whole day if the live quota ran out ("daily mode").