Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

89905A

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-50025 · AIRBUS A-320neo

Hex
89905A
Octal
42310132
Decimal
9,015,386
Country
TW
Tail
B-50025
Type
A20N
No current signal · last broadcast 5h ago
Flights observed
291
Distinct callsigns
20
Country
TW
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 89905A.

Country allocation

The ICAO 24-bit address 89905A 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 Tigerair Taiwan 16 2026-06-09
TTW237 Tigerair Taiwan 15 2026-06-08
TTW602 Tigerair Taiwan 14 2026-06-09
TTW235 - 13 2026-07-13
TTW236 Tigerair Taiwan 12 2026-06-07
TTW281 - 9 2026-07-04
TTW234 - 9 2026-07-12
TTW201 - 9 2026-07-14
TTW200 - 9 2026-07-13
TTW607 Tigerair Taiwan 7 2026-06-12
TTW280 - 7 2026-06-12
TTW231 - 7 2026-07-02
TTW217 - 7 2026-07-02
TTW552 Tigerair Taiwan 5 2026-05-23
TTW252 Tigerair Taiwan 5 2026-05-14
TTW230 Tigerair Taiwan 5 2026-07-01
TTW779 - 4 2026-07-03
TTW711 Tigerair Taiwan 4 2026-05-09
TTW655 - 4 2026-07-09
TTW606 Tigerair Taiwan 4 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TTW551 TPE → KHH Jul 14, 08:50 UTCJul 14, 14:05 UTC5h 15m
2026-07-14 TTW201 NRT → TPE Jul 14, 03:30 UTCJul 14, 06:25 UTC2h 55m
2026-07-13 TTW200 TPE → NRT Jul 13, 23:05 UTCJul 14, 02:05 UTC3h 0m
2026-07-13 TTW233 - Jul 13, 13:00 UTCJul 13, 14:05 UTC1h 5m
2026-07-13 TTW232 - Jul 13, 10:40 UTCJul 13, 11:40 UTC1h 0m
2026-07-13 TTW235 - Jul 13, 04:00 UTCJul 13, 07:25 UTC3h 25m
2026-07-12 TTW234 - Jul 12, 22:45 UTCJul 13, 02:30 UTC3h 45m
2026-07-12 TTW707 - Jul 12, 13:30 UTCJul 12, 15:55 UTC2h 25m
2026-07-12 TTW706 - Jul 12, 09:30 UTCJul 12, 11:50 UTC2h 20m
2026-07-12 TTW235 - Jul 12, 07:05 UTCJul 12, 07:45 UTC40m
2026-07-12 TTW235 - Jul 12, 04:05 UTCJul 12, 06:05 UTC2h 0m
2026-07-09 TTW234 TPE → CTS Jul 9, 22:40 UTCJul 10, 02:10 UTC3h 30m
2026-07-09 TTW715 - Jul 9, 09:10 UTCJul 9, 11:15 UTC2h 5m
2026-07-09 TTW714 - Jul 9, 05:05 UTCJul 9, 07:10 UTC2h 5m
2026-07-09 TTW655 - Jul 9, 03:05 UTCJul 9, 03:40 UTC35m
2026-07-08 TTW654 - Jul 8, 23:00 UTCJul 8, 23:25 UTC25m
2026-07-04 TTW281 - Jul 4, 05:55 UTCJul 4, 06:10 UTC15m
2026-07-04 TTW281 - Jul 4, 03:10 UTCJul 4, 04:35 UTC1h 25m
2026-07-03 TTW200 TPE → NRT Jul 3, 22:45 UTCJul 4, 01:40 UTC2h 55m
2026-07-03 TTW209 - Jul 3, 15:05 UTCJul 3, 15:30 UTC25m
2026-07-03 TTW209 - Jul 3, 12:55 UTCJul 3, 13:45 UTC50m
2026-07-03 TTW778 - Jul 3, 09:20 UTCJul 3, 11:45 UTC2h 25m
2026-07-03 TTW779 - Jul 3, 04:55 UTCJul 3, 07:40 UTC2h 45m
2026-07-03 TTW206 - Jul 3, 01:20 UTCJul 3, 03:45 UTC2h 25m
2026-07-02 TTW217 HND → TPE Jul 2, 20:45 UTCJul 2, 23:45 UTC3h 0m
2026-07-02 TTW216 TPE → HND Jul 2, 16:35 UTCJul 2, 19:15 UTC2h 40m
2026-07-02 TTW231 - Jul 2, 01:30 UTCJul 2, 02:35 UTC1h 5m
2026-07-01 TTW230 TPE → OKA Jul 1, 23:00 UTCJul 2, 00:05 UTC1h 5m
2026-06-18 TEST TPE → TPE Jun 18, 20:35 UTCJun 18, 20:55 UTC20m
2026-06-18 TEST TPE → TPE Jun 18, 20:15 UTCJun 18, 20:30 UTC15m
2026-06-14 TTW247 - Jun 14, 05:55 UTCJun 14, 06:25 UTC30m
2026-06-14 TTW247 - Jun 14, 04:20 UTCJun 14, 04:30 UTC10m
2026-06-14 TTW246 TPE → HSG Jun 14, 00:40 UTCJun 14, 00:55 UTC15m
2026-06-13 TTW246 TPE → HSG Jun 13, 23:10 UTCJun 13, 23:30 UTC20m
2026-06-13 TTW213 KIX → TPE Jun 13, 12:40 UTCJun 13, 15:00 UTC2h 20m
2026-06-13 TTW212 - Jun 13, 09:10 UTCJun 13, 11:25 UTC2h 15m
2026-06-13 TTW235 - Jun 13, 03:30 UTCJun 13, 07:30 UTC3h 59m
2026-06-12 TTW234 TPE → CTS Jun 12, 22:35 UTCJun 13, 01:50 UTC3h 15m
2026-06-12 TTW607 PUS → TPE Jun 12, 12:50 UTCJun 12, 14:55 UTC2h 5m
2026-06-12 TTW606 TPE → PUS Jun 12, 11:10 UTCJun 12, 11:40 UTC30m
2026-06-12 TTW606 TPE → PUS Jun 12, 09:50 UTCJun 12, 10:15 UTC25m
2026-06-12 TTW201 NRT → TPE Jun 12, 05:00 UTCJun 12, 08:30 UTC3h 30m
2026-06-12 TTW280 KHH → NRT Jun 12, 00:10 UTCJun 12, 03:10 UTC3h 1m
2026-06-11 TTW261 CTS → KHH Jun 11, 04:05 UTCJun 11, 08:45 UTC4h 40m
2026-06-10 TTW260 KHH → CTS Jun 10, 23:10 UTCJun 11, 02:40 UTC3h 30m
2026-06-10 TTW585 KHH → DAD Jun 10, 08:20 UTCJun 10, 13:20 UTC5h 0m
2026-06-10 TTW281 NRT → KHH Jun 10, 03:20 UTCJun 10, 06:55 UTC3h 35m
2026-06-09 TTW200 TPE → NRT Jun 9, 22:55 UTCJun 10, 01:30 UTC2h 35m
2026-06-09 TTW603 ICN → TPE Jun 9, 17:40 UTCJun 9, 18:20 UTC40m
2026-06-09 TTW602 TPE → ICN Jun 9, 12:30 UTCJun 9, 14:30 UTC2h 0m

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-50025 page for operator, model, and routing details .

Mode-S 89905A frequently asked

What is Mode-S code 89905A?
89905A is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-50025.
Where is Mode-S 89905A registered?
Mode-S code 89905A is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89905A broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89905A, octal 42310132, decimal 9,015,386.
What flights does 89905A operate?
Mode-S 89905A has broadcast 20 distinct callsigns, including TTW603, TTW237, TTW602, TTW235, TTW236.