Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 51m ago
Flights observed
217
Distinct callsigns
20
Country
TW
Last broadcast
51m ago

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 8 2026-05-28
CAL155 China Airlines 7 2026-05-29
CAL113 China Airlines 7 2026-05-28
CAL027 China Airlines 7 2026-05-16
CAL852 China Airlines 6 2026-05-27
CAL851 China Airlines 6 2026-05-27
CAL528 China Airlines 6 2026-05-13
CAL107 China Airlines 6 2026-05-23
CAL924 China Airlines 5 2026-05-27
CAL923 China Airlines 5 2026-05-27
CAL527 China Airlines 5 2026-05-13
CAL154 China Airlines 5 2026-05-29
CAL108 China Airlines 5 2026-05-11
CAL106 China Airlines 5 2026-05-22
CAL909 China Airlines 4 2026-04-29
CAL903 China Airlines 4 2026-04-30
CAL838 China Airlines 4 2026-05-23
CAL706 China Airlines 4 2026-05-14
CAL518 China Airlines 4 2026-05-21
CAL517 China Airlines 4 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CAL118 TPE → KOJ May 30, 00:20 UTCMay 30, 00:30 UTC10m
2026-05-29 CAL187 PUS → TPE May 29, 08:00 UTCMay 29, 13:15 UTC5h 15m
2026-05-29 CAL155 NGO → TPE May 29, 05:55 UTCMay 29, 06:20 UTC25m
2026-05-29 CAL155 NGO → TPE May 29, 03:40 UTCMay 29, 04:25 UTC45m
2026-05-29 CAL154 TPE → NGO May 29, 01:25 UTCMay 29, 02:00 UTC35m
2026-05-28 CAL154 TPE → NGO May 28, 23:50 UTCMay 29, 00:05 UTC15m
2026-05-28 CAL195 KMJ → TPE May 28, 11:15 UTCMay 28, 11:40 UTC25m
2026-05-28 CAL194 TPE → KMJ May 28, 06:45 UTCMay 28, 07:10 UTC25m
2026-05-28 CAL113 HIJ → TPE May 28, 02:55 UTCMay 28, 05:05 UTC2h 10m
2026-05-28 CAL112 TPE → HIJ May 28, 01:15 UTCMay 28, 01:35 UTC20m
2026-05-27 CAL112 TPE → HIJ May 27, 23:30 UTCMay 27, 23:45 UTC15m
2026-05-27 CAL924 HKG → TPE May 27, 13:45 UTCMay 27, 15:10 UTC1h 25m
2026-05-27 CAL923 TPE → HKG May 27, 11:00 UTCMay 27, 12:20 UTC1h 20m
2026-05-27 CAL852 CNX → TPE May 27, 06:49 UTCMay 27, 08:25 UTC1h 36m
2026-05-27 CAL852 CNX → TPE May 27, 04:59 UTCMay 27, 05:09 UTC10m
2026-05-27 CAL851 TPE → CNX May 27, 00:04 UTCMay 27, 03:29 UTC3h 25m
2026-05-26 CAL187 PUS → TPE May 26, 12:40 UTCMay 26, 13:04 UTC25m
2026-05-26 CAL186 TPE → PUS May 26, 08:04 UTCMay 26, 08:30 UTC25m
2026-05-26 CAL602 HKG → TPE May 26, 02:24 UTCMay 26, 04:00 UTC1h 35m
2026-05-26 CAL601 TPE → HKG May 26, 00:39 UTCMay 26, 00:54 UTC15m
2026-05-25 CAL601 TPE → HKG May 25, 23:35 UTCMay 26, 00:00 UTC25m
2026-05-25 CAL793 TPE → HAN May 25, 07:20 UTCMay 25, 13:45 UTC6h 25m
2026-05-25 CAL121 OKA → TPE May 25, 03:50 UTCMay 25, 04:30 UTC40m
2026-05-24 CAL179 TAK → TPE May 24, 10:30 UTCMay 24, 12:55 UTC2h 25m
2026-05-24 CAL178 TPE → TAK May 24, 07:00 UTCMay 24, 09:10 UTC2h 10m
2026-05-24 MDA992 - May 24, 04:50 UTCMay 24, 05:30 UTC40m
2026-05-24 MDA991 - May 24, 00:55 UTCMay 24, 01:25 UTC30m
2026-05-23 CAL838 BKK → TPE May 23, 20:00 UTCMay 23, 23:15 UTC3h 15m
2026-05-23 CAL837 TPE → BKK May 23, 15:05 UTCMay 23, 18:15 UTC3h 11m
2026-05-23 CAL122 TPE → OKA May 23, 09:30 UTCMay 23, 13:45 UTC4h 15m
2026-05-23 CAL107 NRT → TPE May 23, 04:20 UTCMay 23, 04:50 UTC30m
2026-05-23 CAL107 NRT → TPE May 23, 01:40 UTCMay 23, 02:50 UTC1h 9m
2026-05-22 CAL106 TPE → NRT May 22, 10:30 UTCMay 22, 11:45 UTC1h 15m
2026-05-22 CAL106 TPE → NRT May 22, 08:55 UTCMay 22, 09:20 UTC25m
2026-05-22 CAL157 KIX → TPE May 22, 06:55 UTCMay 22, 07:15 UTC20m
2026-05-22 CAL157 KIX → TPE May 22, 04:50 UTCMay 22, 05:25 UTC35m
2026-05-22 CAL156 TPE → KIX May 22, 00:35 UTCMay 22, 02:50 UTC2h 15m
2026-05-21 CAL518 PEK → TPE May 21, 14:55 UTCMay 21, 15:20 UTC25m
2026-05-21 CAL517 TPE → PEK May 21, 08:20 UTCMay 21, 08:45 UTC25m
2026-05-21 CAL119 KOJ → TPE May 21, 06:00 UTCMay 21, 06:30 UTC30m
2026-05-21 CAL118 TPE → KOJ May 21, 01:05 UTCMay 21, 01:30 UTC25m
2026-05-20 CAL916 HKG → TPE May 20, 09:50 UTCMay 20, 11:10 UTC1h 20m
2026-05-20 CAL915 TPE → HKG May 20, 08:00 UTCMay 20, 08:15 UTC15m
2026-05-20 CAL915 TPE → HKG May 20, 06:55 UTCMay 20, 07:25 UTC30m
2026-05-20 CAL151 NGO → TPE May 20, 03:20 UTCMay 20, 03:40 UTC20m
2026-05-20 CAL151 NGO → TPE May 20, 01:15 UTCMay 20, 01:55 UTC40m
2026-05-19 CAL150 TPE → NGO May 19, 09:35 UTCMay 19, 12:00 UTC2h 25m
2026-05-19 CAL852 CNX → TPE May 19, 04:55 UTCMay 19, 08:10 UTC3h 15m
2026-05-19 CAL851 TPE → CNX May 19, 03:15 UTCMay 19, 03:30 UTC15m
2026-05-19 CAL851 TPE → CNX May 19, 00:10 UTCMay 19, 01:20 UTC1h 10m

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?
No active broadcast right now. Last signal was 51m ago.
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, CAL155, CAL113, CAL027, CAL852.