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 Jul 26, 10:55 UTC
Flights observed
339
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 10:55 UTC

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 19 2026-07-21
TTW602 - 16 2026-07-21
TTW237 Tigerair Taiwan 16 2026-07-20
TTW235 Tigerair Taiwan 16 2026-07-23
TTW236 Tigerair Taiwan 13 2026-07-19
TTW281 - 11 2026-07-18
TTW234 Tigerair Taiwan 11 2026-07-22
TTW200 - 10 2026-07-17
TTW607 - 9 2026-07-17
TTW201 - 9 2026-07-14
TTW280 - 8 2026-07-16
TTW552 - 7 2026-07-18
TTW231 - 7 2026-07-02
TTW217 - 7 2026-07-02
TTW606 - 6 2026-07-17
TTW246 - 6 2026-07-19
TTW551 Tigerair Taiwan 5 2026-07-23
TTW261 Tigerair Taiwan 5 2026-07-25
TTW260 Tigerair Taiwan 5 2026-07-25
TTW252 Tigerair Taiwan 5 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TTW233 OKA → TPE Jul 26, 09:50 UTCJul 26, 10:55 UTC1h 5m
2026-07-26 TTW796 TNN → OKA Jul 26, 07:20 UTCJul 26, 08:00 UTC40m
2026-07-26 TTW797 OKA → TNN Jul 26, 04:30 UTCJul 26, 05:50 UTC1h 20m
2026-07-26 TTW288 KHH → OKA Jul 26, 01:40 UTCJul 26, 02:05 UTC25m
2026-07-25 TTW261 CTS → KHH Jul 25, 08:30 UTCJul 25, 12:15 UTC3h 45m
2026-07-25 TTW260 KHH → CTS Jul 25, 03:05 UTCJul 25, 07:05 UTC4h 0m
2026-07-24 TTW767 KMJ → KHH Jul 24, 12:45 UTCJul 24, 13:25 UTC40m
2026-07-24 TTW794 TNN → KMJ Jul 24, 08:10 UTCJul 24, 09:10 UTC1h 0m
2026-07-24 TTW795 KMJ → TNN Jul 24, 05:00 UTCJul 24, 06:10 UTC1h 10m
2026-07-24 TTW766 KHH → KMJ Jul 24, 00:40 UTCJul 24, 01:55 UTC1h 15m
2026-07-23 TTW551 TPE → DAD Jul 23, 09:00 UTCJul 23, 14:50 UTC5h 50m
2026-07-23 TTW235 CTS → TPE Jul 23, 07:05 UTCJul 23, 07:25 UTC20m
2026-07-23 TTW235 CTS → TPE Jul 23, 03:50 UTCJul 23, 06:35 UTC2h 45m
2026-07-22 TTW234 TPE → CTS Jul 22, 22:30 UTCJul 23, 02:10 UTC3h 40m
2026-07-22 TTW214 TPE → OKJ Jul 22, 03:55 UTCJul 22, 04:10 UTC15m
2026-07-22 TTW737 ISG → TPE Jul 22, 01:00 UTCJul 22, 01:20 UTC20m
2026-07-21 TTW736 TPE → ISG Jul 21, 22:35 UTCJul 21, 23:00 UTC25m
2026-07-21 TTW603 ICN → TPE Jul 21, 17:40 UTCJul 21, 18:00 UTC20m
2026-07-21 TTW603 ICN → TPE Jul 21, 16:00 UTCJul 21, 16:45 UTC45m
2026-07-21 TTW602 TPE → ICN Jul 21, 12:30 UTCJul 21, 14:45 UTC2h 15m
2026-07-21 TTW215 OKJ → TPE Jul 21, 10:10 UTCJul 21, 10:20 UTC10m
2026-07-21 TTW215 OKJ → TPE Jul 21, 08:05 UTCJul 21, 08:40 UTC35m
2026-07-21 TTW214 TPE → OKJ Jul 21, 03:50 UTCJul 21, 05:50 UTC2h 0m
2026-07-21 TTW737 - Jul 21, 00:50 UTCJul 21, 01:15 UTC25m
2026-07-20 TTW736 TPE → ISG Jul 20, 22:55 UTCJul 20, 23:15 UTC20m
2026-07-20 TTW603 ICN → TPE Jul 20, 15:50 UTCJul 20, 17:50 UTC2h 0m
2026-07-20 TTW602 TPE → ICN Jul 20, 12:20 UTCJul 20, 14:25 UTC2h 5m
2026-07-20 TTW237 HKD → TPE Jul 20, 04:05 UTCJul 20, 07:30 UTC3h 25m
2026-07-19 TTW236 TPE → HKD Jul 19, 23:20 UTCJul 20, 02:40 UTC3h 20m
2026-07-19 TTW213 KIX → TPE Jul 19, 11:05 UTCJul 19, 13:30 UTC2h 25m
2026-07-19 TTW212 TPE → KIX Jul 19, 06:35 UTCJul 19, 09:00 UTC2h 25m
2026-07-19 TTW247 - Jul 19, 02:55 UTCJul 19, 04:45 UTC1h 50m
2026-07-19 TTW246 - Jul 19, 01:05 UTCJul 19, 01:20 UTC15m
2026-07-18 TTW246 - Jul 18, 23:25 UTCJul 19, 00:15 UTC50m
2026-07-18 TTW552 KHH → TPE Jul 18, 08:35 UTCJul 18, 14:40 UTC6h 5m
2026-07-18 TTW281 NRT → KHH Jul 18, 03:10 UTCJul 18, 06:20 UTC3h 10m
2026-07-17 TTW200 TPE → NRT Jul 17, 22:45 UTCJul 18, 01:54 UTC3h 10m
2026-07-17 TTW607 - Jul 17, 14:04 UTCJul 17, 14:39 UTC35m
2026-07-17 TTW607 - Jul 17, 12:45 UTCJul 17, 13:05 UTC20m
2026-07-17 TTW606 - Jul 17, 10:40 UTCJul 17, 11:10 UTC30m
2026-07-17 TTW606 - Jul 17, 09:04 UTCJul 17, 09:35 UTC30m
2026-07-17 TTW235 - Jul 17, 03:59 UTCJul 17, 07:25 UTC3h 25m
2026-07-16 TTW234 - Jul 16, 22:40 UTCJul 17, 02:25 UTC3h 45m
2026-07-16 TTW552 KHH → TPE Jul 16, 09:45 UTCJul 16, 15:45 UTC6h 0m
2026-07-16 TTW281 NRT → KHH Jul 16, 05:00 UTCJul 16, 08:15 UTC3h 15m
2026-07-16 TTW280 KHH → NRT Jul 16, 00:15 UTCJul 16, 03:35 UTC3h 20m
2026-07-15 TTW263 - Jul 15, 08:55 UTCJul 15, 11:30 UTC2h 35m
2026-07-15 TTW262 - Jul 15, 04:55 UTCJul 15, 07:20 UTC2h 25m
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

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 Jul 26, 10:55 UTC.
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, TTW602, TTW237, TTW235, TTW236.