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 8 NM of CAROL, or within 15 NM of GENIE.
- W8: the track passes within 8 NM of TONNY, or within 15 NM of the midpoint between TONNY and DEFOE.
The inner gates (CAROL, TONNY) sit 30–38 NM from Songshan, where ADS-B coverage is good. The outer gates catch flights only seen farther out. Gates of different airways never overlap and stay clear of the other airway's 5 NM route width (all drawn on the map), so one leg can only pass gates of one airway. 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").
On the FlightAware page, each morning (07:10 Taiwan time) the previous day's UNI Air flights at Nangan and Beigan are listed from FlightAware AeroAPI, which gives the exact airport (LZN or MFK), actual times and diverted/cancelled status. Then each flight's complete track is fetched (FlightAware's receivers cover the Matsu end) and classified with the same gates. Spending is capped at $9.90 per calendar month and paced through the month; tracks over the pace wait and are fetched on later days while FlightAware still has them. The "OpenSky" column shows what the OpenSky-based tracker concluded for the same flight.