Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8990F6

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-16865 · ATR-72-600

Hex
8990F6
Octal
42310366
Decimal
9,015,542
Country
TW
Tail
B-16865
Type
AT76
No current signal · last broadcast 2h ago
Flights observed
380
Distinct callsigns
20
Country
TW
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 8990F6.

Country allocation

The ICAO 24-bit address 8990F6 falls within the block assigned to Taiwan (TW) by ICAO Annex 10, Volume III. Every aircraft registered in Taiwan receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
MDA1273 Mandarin Airlines 11 2026-05-26
MDA1274 Mandarin Airlines 10 2026-05-26
MDA378 Mandarin Airlines 9 2026-05-24
MDA377 Mandarin Airlines 9 2026-05-24
MDA344 Mandarin Airlines 9 2026-05-29
MDA366 Mandarin Airlines 8 2026-05-18
MDA365 Mandarin Airlines 8 2026-05-18
MDA343 Mandarin Airlines 8 2026-05-29
MDA368 Mandarin Airlines 7 2026-05-16
MDA2368 Mandarin Airlines 7 2026-05-26
MDA2367 Mandarin Airlines 7 2026-05-26
MDA2362 Mandarin Airlines 7 2026-05-26
MDA2361 Mandarin Airlines 7 2026-05-25
MDA7932 Mandarin Airlines 6 2026-05-29
MDA7931 Mandarin Airlines 6 2026-05-29
MDA375 Mandarin Airlines 6 2026-05-27
MDA373 Mandarin Airlines 6 2026-05-18
MDA370 Mandarin Airlines 6 2026-05-17
MDA369 Mandarin Airlines 6 2026-05-18
MDA367 Mandarin Airlines 6 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 MDA334 MZG → KHH May 30, 02:06 UTCMay 30, 02:35 UTC29m
2026-05-30 MDA333 KHH → MZG May 30, 00:55 UTCMay 30, 01:20 UTC25m
2026-05-29 MDA7932 HUN → KHH May 29, 13:20 UTCMay 29, 13:40 UTC20m
2026-05-29 MDA7931 KHH → HUN May 29, 11:25 UTCMay 29, 11:45 UTC20m
2026-05-29 MDA344 MZG → KHH May 29, 10:05 UTCMay 29, 10:30 UTC25m
2026-05-29 MDA343 KHH → MZG May 29, 08:45 UTCMay 29, 09:10 UTC25m
2026-05-29 MDA7926 LZN → KHH May 29, 06:15 UTCMay 29, 07:10 UTC55m
2026-05-29 MDA7925 KHH → LZN May 29, 03:45 UTCMay 29, 04:35 UTC50m
2026-05-29 MDA334 MZG → KHH May 29, 02:10 UTCMay 29, 02:40 UTC30m
2026-05-29 MDA333 KHH → MZG May 29, 01:00 UTCMay 29, 01:25 UTC25m
2026-05-28 MDA7932 HUN → KHH May 28, 13:10 UTCMay 28, 13:40 UTC30m
2026-05-28 MDA7931 KHH → HUN May 28, 11:25 UTCMay 28, 11:45 UTC20m
2026-05-28 MDA344 MZG → KHH May 28, 10:05 UTCMay 28, 10:25 UTC20m
2026-05-28 MDA343 KHH → MZG May 28, 08:55 UTCMay 28, 09:25 UTC30m
2026-05-28 MDA340 MZG → KHH May 28, 07:25 UTCMay 28, 07:55 UTC30m
2026-05-28 MDA339 KHH → MZG May 28, 06:15 UTCMay 28, 06:45 UTC30m
2026-05-28 MDA304 KNH → KHH May 28, 04:40 UTCMay 28, 05:15 UTC35m
2026-05-28 MDA303 KHH → KNH May 28, 02:40 UTCMay 28, 03:00 UTC20m
2026-05-28 MDA332 MZG → KHH May 28, 01:20 UTCMay 28, 01:45 UTC25m
2026-05-27 MDA331 KHH → MZG May 27, 23:45 UTCMay 28, 00:20 UTC35m
2026-05-27 MDA344 MZG → KHH May 27, 10:25 UTCMay 27, 10:55 UTC30m
2026-05-27 MDA375 TSA → MZG May 27, 08:50 UTCMay 27, 09:30 UTC40m
2026-05-27 MDA1270 KNH → TSA May 27, 07:10 UTCMay 27, 07:55 UTC45m
2026-05-27 MDA1269 TSA → KNH May 27, 04:45 UTCMay 27, 05:40 UTC55m
2026-05-26 MDA386 MZG → TSA May 26, 13:29 UTCMay 26, 14:09 UTC40m
2026-05-26 MDA385 TSA → MZG May 26, 12:00 UTCMay 26, 12:40 UTC40m
2026-05-26 MDA1274 KNH → TSA May 26, 09:19 UTCMay 26, 10:20 UTC1h 0m
2026-05-26 MDA1273 TSA → KNH May 26, 07:15 UTCMay 26, 08:04 UTC50m
2026-05-26 MDA2368 MZG → TSA May 26, 04:54 UTCMay 26, 05:40 UTC45m
2026-05-26 MDA2367 TSA → MZG May 26, 03:19 UTCMay 26, 04:04 UTC45m
2026-05-26 MDA2362 MZG → TSA May 26, 01:20 UTCMay 26, 02:29 UTC1h 10m
2026-05-25 MDA2361 TSA → MZG May 25, 23:24 UTCMay 26, 00:19 UTC55m
2026-05-25 MDA1274 KNH → TSA May 25, 09:15 UTCMay 25, 10:00 UTC45m
2026-05-25 MDA1273 TSA → KNH May 25, 07:00 UTCMay 25, 07:45 UTC45m
2026-05-25 MDA1266 KNH → TSA May 25, 05:10 UTCMay 25, 06:00 UTC50m
2026-05-25 MDA1265 TSA → KNH May 25, 02:55 UTCMay 25, 03:40 UTC45m
2026-05-24 MDA361 TSA → MZG May 24, 23:15 UTCMay 24, 23:46 UTC31m
2026-05-24 MDA378 MZG → TSA May 24, 12:50 UTCMay 24, 13:30 UTC40m
2026-05-24 MDA377 TSA → MZG May 24, 11:00 UTCMay 24, 11:45 UTC45m
2026-05-24 MDA1274 KNH → TSA May 24, 09:20 UTCMay 24, 10:00 UTC40m
2026-05-24 MDA1273 TSA → KNH May 24, 07:05 UTCMay 24, 07:50 UTC45m
2026-05-24 MDA1266 KNH → TSA May 24, 05:10 UTCMay 24, 05:55 UTC45m
2026-05-24 MDA1265 TSA → KNH May 24, 02:40 UTCMay 24, 03:25 UTC45m
2026-05-24 MDA362 MZG → TSA May 24, 00:45 UTCMay 24, 01:35 UTC50m
2026-05-23 MDA361 TSA → MZG May 23, 23:15 UTCMay 24, 00:00 UTC45m
2026-05-23 MDA378 MZG → TSA May 23, 12:25 UTCMay 23, 13:15 UTC50m
2026-05-23 MDA377 TSA → MZG May 23, 10:55 UTCMay 23, 11:35 UTC40m
2026-05-23 MDA1274 KNH → TSA May 23, 09:25 UTCMay 23, 10:00 UTC35m
2026-05-23 MDA1273 TSA → KNH May 23, 07:00 UTCMay 23, 07:45 UTC45m
2026-05-23 MDA2368 MZG → TSA May 23, 05:05 UTCMay 23, 05:55 UTC50m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the B-16865 page for operator, model, and routing details .

Mode-S 8990F6 frequently asked

What is Mode-S code 8990F6?
8990F6 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-16865.
Where is Mode-S 8990F6 registered?
Mode-S code 8990F6 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990F6 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8990F6, octal 42310366, decimal 9,015,542.
What flights does 8990F6 operate?
Mode-S 8990F6 has broadcast 20 distinct callsigns, including MDA1273, MDA1274, MDA378, MDA377, MDA344.