Apparatus

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sensors Mode-S transponder

89902C

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-50017 · AIRBUS A-320

Hex
89902C
Octal
42310054
Decimal
9,015,340
Country
TW
Tail
B-50017
Type
A320
Broadcasting now · callsign TTW779 · 31,150 ft
Flights observed
393
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Current position

89902C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 89902C 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
TTW217 - 19 2026-07-14
TTW241 - 14 2026-07-02
TTW211 - 13 2026-06-27
TTW285 - 11 2026-06-20
TTW216 - 11 2026-07-14
TTW210 Tigerair Taiwan 11 2026-06-27
TTW203 - 11 2026-06-27
TTW202 - 11 2026-06-27
TTW213 - 10 2026-07-03
TTW206 - 10 2026-07-15
TTW271 - 9 2026-06-19
TTW212 - 9 2026-07-03
TTW284 Tigerair Taiwan 8 2026-06-22
TTW270 - 8 2026-06-19
TTW240 Tigerair Taiwan 8 2026-07-01
TTW215 - 8 2026-07-04
TTW201 - 8 2026-07-05
TTW663 - 7 2026-06-29
TTW606 - 7 2026-06-25
TTW258 Tigerair Taiwan 7 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 TTW206 - Jul 15, 02:05 UTCJul 15, 03:50 UTC1h 45m
2026-07-15 TTW206 - Jul 15, 01:20 UTCJul 15, 01:30 UTC10m
2026-07-14 TTW217 - Jul 14, 23:20 UTCJul 14, 23:35 UTC15m
2026-07-14 TTW217 - Jul 14, 20:55 UTCJul 14, 22:10 UTC1h 15m
2026-07-14 TTW216 TPE → HND Jul 14, 16:35 UTCJul 14, 19:25 UTC2h 50m
2026-07-14 TTW207 - Jul 14, 05:20 UTCJul 14, 07:40 UTC2h 20m
2026-07-14 TTW206 - Jul 14, 01:15 UTCJul 14, 03:35 UTC2h 20m
2026-07-13 TTW217 - Jul 13, 23:15 UTCJul 13, 23:40 UTC25m
2026-07-13 TTW217 - Jul 13, 20:55 UTCJul 13, 22:10 UTC1h 15m
2026-07-13 TTW216 TPE → HND Jul 13, 16:30 UTCJul 13, 19:20 UTC2h 50m
2026-07-13 TTW251 - Jul 13, 05:31 UTCJul 13, 07:25 UTC1h 55m
2026-07-13 TTW250 - Jul 13, 00:40 UTCJul 13, 01:10 UTC30m
2026-07-12 TTW231 - Jul 12, 11:15 UTCJul 12, 12:20 UTC1h 5m
2026-07-12 TTW230 - Jul 12, 08:55 UTCJul 12, 10:01 UTC1h 5m
2026-07-12 TTW3062 HKG → TPE Jul 12, 05:55 UTCJul 12, 07:20 UTC1h 25m
2026-07-05 TTW3061 - Jul 5, 08:40 UTCJul 5, 08:55 UTC15m
2026-07-05 TTW3061 - Jul 5, 07:40 UTCJul 5, 08:00 UTC20m
2026-07-05 TTW201 NRT → TPE Jul 5, 03:20 UTCJul 5, 06:20 UTC3h 0m
2026-07-04 TTW200 TPE → NRT Jul 4, 22:40 UTCJul 5, 01:35 UTC2h 55m
2026-07-04 TTW215 - Jul 4, 09:00 UTCJul 4, 09:25 UTC25m
2026-07-04 TTW215 - Jul 4, 07:00 UTCJul 4, 07:35 UTC35m
2026-07-04 TTW214 - Jul 4, 03:45 UTCJul 4, 05:40 UTC1h 55m
2026-07-04 TTW737 - Jul 4, 00:45 UTCJul 4, 01:05 UTC20m
2026-07-03 TTW736 - Jul 3, 22:40 UTCJul 3, 23:00 UTC20m
2026-07-03 TTW213 - Jul 3, 14:35 UTCJul 3, 15:00 UTC25m
2026-07-03 TTW213 - Jul 3, 12:40 UTCJul 3, 13:20 UTC40m
2026-07-03 TTW212 TPE → KIX Jul 3, 08:55 UTCJul 3, 11:15 UTC2h 20m
2026-07-03 TTW235 - Jul 3, 03:45 UTCJul 3, 07:35 UTC3h 50m
2026-07-02 TTW234 TPE → CTS Jul 2, 22:40 UTCJul 3, 02:15 UTC3h 35m
2026-07-02 TTW255 - Jul 2, 10:10 UTCJul 2, 13:30 UTC3h 20m
2026-07-02 TTW254 - Jul 2, 06:00 UTCJul 2, 08:45 UTC2h 45m
2026-07-02 TTW241 - Jul 2, 03:20 UTCJul 2, 03:50 UTC30m
2026-07-02 TTW241 - Jul 2, 01:50 UTCJul 2, 02:00 UTC10m
2026-07-01 TTW240 TPE → FUK Jul 1, 22:40 UTCJul 1, 23:00 UTC20m
2026-07-01 TTW201 NRT → TPE Jul 1, 04:55 UTCJul 1, 08:00 UTC3h 5m
2026-07-01 TTW280 - Jul 1, 00:15 UTCJul 1, 03:25 UTC3h 10m
2026-06-30 TTW767 - Jun 30, 12:45 UTCJun 30, 13:30 UTC45m
2026-06-30 TTW794 - Jun 30, 08:05 UTCJun 30, 08:40 UTC35m
2026-06-30 TTW766 KHH → TNN Jun 30, 01:04 UTCJun 30, 06:30 UTC5h 26m
2026-06-29 TTW663 - Jun 29, 12:05 UTCJun 29, 14:39 UTC2h 35m
2026-06-29 TTW662 KHH → GMP Jun 29, 08:24 UTCJun 29, 10:50 UTC2h 25m
2026-06-29 TTW281 NRT → KHH Jun 29, 03:14 UTCJun 29, 06:54 UTC3h 40m
2026-06-29 TTW200 TPE → NRT Jun 29, 00:29 UTCJun 29, 01:44 UTC1h 15m
2026-06-28 TTW200 TPE → NRT Jun 28, 22:55 UTCJun 28, 23:09 UTC15m
2026-06-28 TTW237 - Jun 28, 07:29 UTCJun 28, 07:44 UTC15m
2026-06-28 TTW237 - Jun 28, 03:55 UTCJun 28, 06:15 UTC2h 20m
2026-06-27 TTW236 TPE → HKD Jun 27, 23:19 UTCJun 28, 02:29 UTC3h 10m
2026-06-27 TTW203 - Jun 27, 14:25 UTCJun 27, 14:54 UTC30m
2026-06-27 TTW203 - Jun 27, 11:39 UTCJun 27, 13:00 UTC1h 20m
2026-06-27 TTW202 - Jun 27, 08:55 UTCJun 27, 10:14 UTC1h 20m

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-50017 page for operator, model, and routing details .

Mode-S 89902C frequently asked

What is Mode-S code 89902C?
89902C is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-50017.
Where is Mode-S 89902C registered?
Mode-S code 89902C is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89902C broadcasting right now?
Yes. Mode-S 89902C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89902C, octal 42310054, decimal 9,015,340.
What flights does 89902C operate?
Mode-S 89902C has broadcast 20 distinct callsigns, including TTW217, TTW241, TTW211, TTW285, TTW216.