Apparatus

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sensors Mode-S transponder

89910A

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18203 · AIRBUS A-321neo

Hex
89910A
Octal
42310412
Decimal
9,015,562
Country
TW
Tail
B-18203
Type
A21N
Transponder active on ground
Flights observed
433
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 13:30 UTC

Last known position

Most recent position reported by Mode-S 89910A.

Country allocation

The ICAO 24-bit address 89910A 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
CAL112 China Airlines 15 2026-07-23
CAL113 China Airlines 14 2026-07-23
CAL155 - 12 2026-07-15
CAL852 - 9 2026-07-03
CAL851 China Airlines 9 2026-07-02
CAL186 China Airlines 9 2026-07-19
CAL154 - 9 2026-07-15
CAL923 - 8 2026-07-20
CAL756 China Airlines 8 2026-06-29
CAL195 China Airlines 8 2026-07-23
CAL187 - 8 2026-07-19
CAL109 - 8 2026-06-26
CAL108 - 8 2026-06-26
CAL107 - 8 2026-06-26
CAL027 - 8 2026-06-17
CAL924 China Airlines 7 2026-07-20
CAL793 - 7 2026-07-12
CAL755 - 7 2026-06-29
CAL194 China Airlines 7 2026-07-23
CAL131 - 7 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL127 NRT → KHH Jul 26, 10:10 UTCJul 26, 13:20 UTC3h 10m
2026-07-26 CAL126 KHH → NRT Jul 26, 04:55 UTCJul 26, 08:25 UTC3h 31m
2026-07-25 CAL103 NRT → KHH Jul 25, 05:00 UTCJul 25, 08:30 UTC3h 30m
2026-07-25 CAL102 KHH → NRT Jul 25, 00:05 UTCJul 25, 03:20 UTC3h 15m
2026-07-24 CAL7843 TPE → KHH Jul 24, 14:15 UTCJul 24, 15:15 UTC1h 0m
2026-07-24 CAL522 CAN → TPE Jul 24, 10:10 UTCJul 24, 11:35 UTC1h 25m
2026-07-24 CAL521 TPE → CAN Jul 24, 06:40 UTCJul 24, 07:20 UTC40m
2026-07-24 CAL904 HKG → TPE Jul 24, 03:50 UTCJul 24, 05:15 UTC1h 25m
2026-07-24 CAL903 TPE → HKG Jul 24, 00:45 UTCJul 24, 02:00 UTC1h 15m
2026-07-23 CAL195 KMJ → TPE Jul 23, 11:40 UTCJul 23, 12:05 UTC25m
2026-07-23 CAL194 TPE → KMJ Jul 23, 06:55 UTCJul 23, 07:45 UTC50m
2026-07-23 CAL113 HIJ → TPE Jul 23, 05:00 UTCJul 23, 05:25 UTC25m
2026-07-23 CAL113 HIJ → TPE Jul 23, 03:10 UTCJul 23, 03:40 UTC30m
2026-07-23 CAL112 TPE → HIJ Jul 23, 01:10 UTCJul 23, 01:35 UTC25m
2026-07-22 CAL112 TPE → HIJ Jul 22, 23:35 UTCJul 22, 23:45 UTC10m
2026-07-22 CAL916 HKG → TPE Jul 22, 11:30 UTCJul 22, 11:45 UTC15m
2026-07-21 CAL787 TPE → DAD Jul 21, 23:50 UTCJul 22, 05:25 UTC5h 35m
2026-07-21 CAL7916 RGN → TPE Jul 21, 05:05 UTCJul 21, 09:00 UTC3h 55m
2026-07-20 CAL7915 TPE → RGN Jul 20, 23:30 UTCJul 21, 03:25 UTC3h 54m
2026-07-20 CAL924 HKG → TPE Jul 20, 13:45 UTCJul 20, 15:10 UTC1h 25m
2026-07-20 CAL923 - Jul 20, 10:35 UTCJul 20, 11:45 UTC1h 10m
2026-07-20 CAL705 TPE → CEB Jul 20, 00:40 UTCJul 20, 08:10 UTC7h 30m
2026-07-19 CAL187 - Jul 19, 12:15 UTCJul 19, 12:50 UTC35m
2026-07-19 CAL187 - Jul 19, 11:00 UTCJul 19, 11:20 UTC20m
2026-07-19 CAL186 TPE → PUS Jul 19, 09:20 UTCJul 19, 09:45 UTC25m
2026-07-19 CAL186 TPE → PUS Jul 19, 07:55 UTCJul 19, 08:20 UTC25m
2026-07-19 CAL113 HIJ → TPE Jul 19, 03:05 UTCJul 19, 05:15 UTC2h 10m
2026-07-18 CAL112 TPE → HIJ Jul 18, 23:30 UTCJul 19, 01:40 UTC2h 10m
2026-07-18 CAL836 - Jul 18, 13:00 UTCJul 18, 14:15 UTC1h 15m
2026-07-18 CAL836 - Jul 18, 10:45 UTCJul 18, 10:55 UTC10m
2026-07-18 CAL835 - Jul 18, 09:00 UTCJul 18, 09:15 UTC15m
2026-07-18 CAL835 - Jul 18, 06:10 UTCJul 18, 07:00 UTC50m
2026-07-18 CAL121 - Jul 18, 04:00 UTCJul 18, 04:15 UTC15m
2026-07-18 CAL120 - Jul 18, 01:34 UTCJul 18, 01:50 UTC15m
2026-07-18 CAL120 - Jul 18, 00:39 UTCJul 18, 00:55 UTC15m
2026-07-17 CAL505 TPE → PVG Jul 17, 09:50 UTCJul 17, 14:24 UTC4h 35m
2026-07-17 CAL157 KIX → TPE Jul 17, 04:35 UTCJul 17, 06:45 UTC2h 10m
2026-07-17 CAL156 - Jul 17, 00:40 UTCJul 17, 02:59 UTC2h 20m
2026-07-16 CAL916 HKG → TPE Jul 16, 09:55 UTCJul 16, 11:25 UTC1h 30m
2026-07-16 CAL915 - Jul 16, 07:00 UTCJul 16, 08:25 UTC1h 25m
2026-07-16 CAL904 HKG → TPE Jul 16, 03:55 UTCJul 16, 05:30 UTC1h 35m
2026-07-16 CAL903 TPE → HKG Jul 16, 00:30 UTCJul 16, 01:45 UTC1h 15m
2026-07-15 CAL920 - Jul 15, 13:00 UTCJul 15, 14:25 UTC1h 25m
2026-07-15 CAL919 TPE → HKG Jul 15, 09:25 UTCJul 15, 10:50 UTC1h 25m
2026-07-15 CAL155 - Jul 15, 06:05 UTCJul 15, 06:30 UTC25m
2026-07-15 CAL155 - Jul 15, 05:15 UTCJul 15, 05:35 UTC20m
2026-07-15 CAL155 - Jul 15, 04:05 UTCJul 15, 04:15 UTC10m
2026-07-15 CAL154 - Jul 15, 01:25 UTCJul 15, 02:10 UTC45m
2026-07-14 CAL154 - Jul 14, 23:45 UTCJul 15, 00:00 UTC15m
2026-07-14 CAL187 PUS → TPE Jul 14, 11:25 UTCJul 14, 13:15 UTC1h 50m

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-18203 page for operator, model, and routing details .

Mode-S 89910A frequently asked

What is Mode-S code 89910A?
89910A is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18203.
Where is Mode-S 89910A registered?
Mode-S code 89910A is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89910A broadcasting right now?
Mode-S 89910A is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89910A, octal 42310412, decimal 9,015,562.
What flights does 89910A operate?
Mode-S 89910A has broadcast 20 distinct callsigns, including CAL112, CAL113, CAL155, CAL852, CAL851.