Apparatus

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sensors Mode-S transponder

89905D

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-22102 · AIRBUS A-330-300

Hex
89905D
Octal
42310135
Decimal
9,015,389
Country
TW
Tail
B-22102
Type
A333
No current signal · last broadcast 7h ago
Flights observed
369
Distinct callsigns
20
Country
TW
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 89905D.

Country allocation

The ICAO 24-bit address 89905D 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
TTW603 - 21 2026-06-27
TTW602 - 19 2026-06-27
TTW235 - 14 2026-07-09
TTW201 - 12 2026-06-26
TTW237 - 11 2026-06-21
TTW217 - 10 2026-06-24
TTW280 - 9 2026-07-13
TTW216 Tigerair Taiwan 9 2026-06-24
TTW215 - 9 2026-07-08
TTW552 - 7 2026-07-02
TTW551 - 7 2026-07-09
TTW236 Tigerair Taiwan 7 2026-06-20
TTW234 - 7 2026-07-08
TTW779 - 6 2026-06-22
TTW737 - 6 2026-07-08
TTW736 - 6 2026-07-07
TTW281 - 6 2026-07-13
TTW261 - 6 2026-07-12
TTW260 - 6 2026-07-10
TTW255 Tigerair Taiwan 6 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TTW793 - Jul 14, 10:25 UTCJul 14, 11:30 UTC1h 5m
2026-07-14 TTW728 - Jul 14, 08:10 UTCJul 14, 08:25 UTC15m
2026-07-14 TTW289 - Jul 14, 05:30 UTCJul 14, 06:40 UTC1h 10m
2026-07-14 TTW288 - Jul 14, 02:20 UTCJul 14, 02:45 UTC25m
2026-07-14 TTW3005 - Jul 14, 00:05 UTCJul 14, 00:45 UTC40m
2026-07-13 TTW671 KHH → TPE Jul 13, 09:35 UTCJul 13, 15:45 UTC6h 10m
2026-07-13 TTW281 NRT → KHH Jul 13, 05:10 UTCJul 13, 08:15 UTC3h 5m
2026-07-13 TTW280 - Jul 13, 00:01 UTCJul 13, 03:30 UTC3h 30m
2026-07-12 TTW261 - Jul 12, 08:55 UTCJul 12, 12:35 UTC3h 40m
2026-07-10 TTW260 KHH → CTS Jul 10, 02:20 UTCJul 10, 06:15 UTC3h 55m
2026-07-09 TTW551 TPE → KHH Jul 9, 08:50 UTCJul 9, 14:15 UTC5h 25m
2026-07-09 TTW235 - Jul 9, 03:25 UTCJul 9, 07:10 UTC3h 45m
2026-07-08 TTW234 TPE → CTS Jul 8, 22:35 UTCJul 9, 02:05 UTC3h 30m
2026-07-08 TTW215 - Jul 8, 09:00 UTCJul 8, 09:25 UTC25m
2026-07-08 TTW215 - Jul 8, 07:15 UTCJul 8, 07:45 UTC30m
2026-07-08 TTW214 - Jul 8, 03:45 UTCJul 8, 05:50 UTC2h 5m
2026-07-08 TTW737 - Jul 8, 00:50 UTCJul 8, 01:15 UTC25m
2026-07-07 TTW736 - Jul 7, 22:45 UTCJul 7, 23:10 UTC25m
2026-07-07 TTW213 - Jul 7, 12:50 UTCJul 7, 13:15 UTC25m
2026-07-07 TTW213 - Jul 7, 11:00 UTCJul 7, 11:40 UTC40m
2026-07-07 TTW212 TPE → KIX Jul 7, 07:35 UTCJul 7, 10:00 UTC2h 25m
2026-07-07 TTW211 KIX → TPE Jul 7, 03:05 UTCJul 7, 05:30 UTC2h 25m
2026-07-06 TTW284 KHH → KIX Jul 6, 23:00 UTCJul 7, 01:35 UTC2h 35m
2026-07-06 TTW263 - Jul 6, 09:00 UTCJul 6, 11:30 UTC2h 30m
2026-07-06 TTW262 - Jul 6, 04:50 UTCJul 6, 07:15 UTC2h 25m
2026-07-06 TTW729 - Jul 6, 02:40 UTCJul 6, 03:10 UTC30m
2026-07-05 TTW792 - Jul 5, 23:20 UTCJul 6, 00:25 UTC1h 5m
2026-07-05 TTW670 - Jul 5, 08:30 UTCJul 5, 13:25 UTC4h 55m
2026-07-04 TTW551 TPE → KHH Jul 4, 09:00 UTCJul 4, 14:20 UTC5h 20m
2026-07-04 TTW251 - Jul 4, 07:15 UTCJul 4, 07:30 UTC15m
2026-07-04 TTW251 - Jul 4, 05:35 UTCJul 4, 05:50 UTC15m
2026-07-04 TTW250 - Jul 4, 01:05 UTCJul 4, 02:45 UTC1h 40m
2026-07-03 TTW229 - Jul 3, 12:40 UTCJul 3, 12:55 UTC15m
2026-07-03 TTW229 - Jul 3, 10:00 UTCJul 3, 12:05 UTC2h 5m
2026-07-03 TTW228 - Jul 3, 06:00 UTCJul 3, 08:35 UTC2h 35m
2026-07-03 TTW743 - Jul 3, 03:15 UTCJul 3, 03:40 UTC25m
2026-07-02 TTW742 - Jul 2, 22:35 UTCJul 2, 23:00 UTC25m
2026-07-02 TTW552 KHH → TPE Jul 2, 09:30 UTCJul 2, 15:10 UTC5h 40m
2026-07-02 IT281 NRT → KHH Jul 2, 04:45 UTCJul 2, 08:15 UTC3h 30m
2026-07-02 TTW280 - Jul 2, 00:15 UTCJul 2, 03:20 UTC3h 5m
2026-07-01 TTW671 KHH → KHH Jul 1, 08:05 UTCJul 1, 13:30 UTC5h 25m
2026-07-01 TTW289 KHH → KHH Jul 1, 02:15 UTCJul 1, 06:40 UTC4h 25m
2026-06-30 TTW261 - Jun 30, 05:30 UTCJun 30, 09:45 UTC4h 15m
2026-06-30 TTW260 - Jun 30, 00:20 UTCJun 30, 04:10 UTC3h 51m
2026-06-29 TTW670 KHH → KHH Jun 29, 08:04 UTCJun 29, 12:55 UTC4h 50m
2026-06-29 TTW288 KHH → KHH Jun 29, 02:20 UTCJun 29, 06:34 UTC4h 15m
2026-06-28 TTW585 KHH → KHH Jun 28, 08:05 UTCJun 28, 13:25 UTC5h 20m
2026-06-28 TTW285 KIX → KHH Jun 28, 03:14 UTCJun 28, 06:05 UTC2h 50m
2026-06-27 TTW210 TPE → KIX Jun 27, 22:49 UTCJun 28, 00:59 UTC2h 10m
2026-06-27 TTW603 - Jun 27, 17:44 UTCJun 27, 17:59 UTC15m

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-22102 page for operator, model, and routing details .

Mode-S 89905D frequently asked

What is Mode-S code 89905D?
89905D is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-22102.
Where is Mode-S 89905D registered?
Mode-S code 89905D is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89905D broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89905D, octal 42310135, decimal 9,015,389.
What flights does 89905D operate?
Mode-S 89905D has broadcast 20 distinct callsigns, including TTW603, TTW602, TTW235, TTW201, TTW237.