Apparatus

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sensors Mode-S transponder

89910B

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18105 · AIRBUS A-321neo

Hex
89910B
Octal
42310413
Decimal
9,015,563
Country
TW
Tail
B-18105
Type
A21N
No current signal · last broadcast 14h ago
Flights observed
376
Distinct callsigns
20
Country
TW
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 89910B.

Country allocation

The ICAO 24-bit address 89910B 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
CAL103 - 31 2026-06-14
CAL935 - 29 2026-06-14
CAL127 - 27 2026-06-15
CAL126 - 26 2026-06-15
CAL102 China Airlines 26 2026-06-14
CAL936 China Airlines 24 2026-06-14
CAL934 China Airlines 14 2026-06-09
CAL933 China Airlines 14 2026-06-08
MDA968 - 9 2026-06-15
MDA967 - 8 2026-06-14
CAL107 - 7 2026-07-12
CAL903 - 6 2026-07-02
CAL763 - 6 2026-07-16
CAL732 - 6 2026-07-17
CAL731 China Airlines 6 2026-07-17
CAL112 China Airlines 6 2026-07-01
CAL106 - 6 2026-07-10
CAL915 - 5 2026-07-05
CAL108 - 5 2026-07-01
CAL793 - 4 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CAL732 - Jul 17, 10:50 UTCJul 17, 12:00 UTC1h 10m
2026-07-17 CAL731 TPE → PEN Jul 17, 05:45 UTCJul 17, 05:55 UTC10m
2026-07-17 CAL731 TPE → PEN Jul 17, 01:55 UTCJul 17, 02:50 UTC55m
2026-07-16 CAL764 - Jul 16, 20:05 UTCJul 16, 23:25 UTC3h 20m
2026-07-16 CAL763 - Jul 16, 16:35 UTCJul 16, 16:44 UTC10m
2026-07-16 CAL763 - Jul 16, 11:54 UTCJul 16, 15:05 UTC3h 10m
2026-07-16 CAL131 - Jul 16, 10:00 UTCJul 16, 10:15 UTC15m
2026-07-16 CAL131 - Jul 16, 06:45 UTCJul 16, 08:45 UTC2h 0m
2026-07-16 CAL130 - Jul 16, 00:55 UTCJul 16, 04:30 UTC3h 35m
2026-07-15 CAL732 - Jul 15, 11:00 UTCJul 15, 12:15 UTC1h 15m
2026-07-15 CAL732 - Jul 15, 07:40 UTCJul 15, 07:50 UTC10m
2026-07-15 CAL731 - Jul 15, 05:50 UTCJul 15, 06:05 UTC15m
2026-07-15 CAL731 - Jul 15, 02:05 UTCJul 15, 03:05 UTC1h 0m
2026-07-14 CAL764 - Jul 14, 19:55 UTCJul 14, 23:20 UTC3h 24m
2026-07-14 CAL763 - Jul 14, 16:25 UTCJul 14, 16:35 UTC10m
2026-07-14 CAL763 - Jul 14, 11:50 UTCJul 14, 15:00 UTC3h 10m
2026-07-14 CAL131 CTS → TPE Jul 14, 06:45 UTCJul 14, 10:20 UTC3h 35m
2026-07-14 CAL130 - Jul 14, 01:00 UTCJul 14, 04:40 UTC3h 40m
2026-07-13 CAL189 PUS → TPE Jul 13, 03:20 UTCJul 13, 05:20 UTC2h 0m
2026-07-13 CAL188 - Jul 13, 01:40 UTCJul 13, 02:01 UTC20m
2026-07-13 CAL188 - Jul 13, 00:05 UTCJul 13, 00:35 UTC30m
2026-07-12 CAL195 - Jul 12, 13:20 UTCJul 12, 13:55 UTC35m
2026-07-12 CAL195 - Jul 12, 12:01 UTCJul 12, 12:10 UTC10m
2026-07-12 CAL194 - Jul 12, 06:45 UTCJul 12, 07:10 UTC25m
2026-07-12 CAL107 - Jul 12, 03:35 UTCJul 12, 04:01 UTC25m
2026-07-12 CAL107 - Jul 12, 01:00 UTCJul 12, 02:15 UTC1h 15m
2026-07-10 CAL106 - Jul 10, 08:30 UTCJul 10, 11:30 UTC3h 0m
2026-07-10 CAL155 - Jul 10, 03:55 UTCJul 10, 06:20 UTC2h 25m
2026-07-09 CAL154 - Jul 9, 23:50 UTCJul 10, 02:00 UTC2h 10m
2026-07-09 CAL179 - Jul 9, 12:20 UTCJul 9, 13:00 UTC40m
2026-07-09 CAL179 - Jul 9, 10:25 UTCJul 9, 11:00 UTC35m
2026-07-09 CAL178 - Jul 9, 07:10 UTCJul 9, 09:20 UTC2h 10m
2026-07-09 CAL191 PUS → TPE Jul 9, 01:35 UTCJul 9, 03:25 UTC1h 50m
2026-07-09 CAL190 - Jul 9, 00:00 UTCJul 9, 00:20 UTC20m
2026-07-08 CAL190 - Jul 8, 22:30 UTCJul 8, 22:55 UTC25m
2026-07-08 CAL924 HKG → TPE Jul 8, 13:25 UTCJul 8, 14:40 UTC1h 15m
2026-07-08 CAL923 TPE → HKG Jul 8, 10:25 UTCJul 8, 11:45 UTC1h 20m
2026-07-08 CAL910 HKG → TPE Jul 8, 06:35 UTCJul 8, 07:55 UTC1h 20m
2026-07-08 CAL909 TPE → HKG Jul 8, 03:30 UTCJul 8, 04:55 UTC1h 25m
2026-07-07 CAL764 CGK → TPE Jul 7, 20:00 UTCJul 7, 23:35 UTC3h 35m
2026-07-07 CAL763 - Jul 7, 16:15 UTCJul 7, 16:25 UTC10m
2026-07-07 CAL763 - Jul 7, 11:40 UTCJul 7, 14:45 UTC3h 5m
2026-07-07 CAL157 KIX → TPE Jul 7, 04:35 UTCJul 7, 07:10 UTC2h 35m
2026-07-07 CAL156 TPE → KIX Jul 7, 00:45 UTCJul 7, 03:05 UTC2h 20m
2026-07-06 CAL704 - Jul 6, 09:20 UTCJul 6, 11:00 UTC1h 40m
2026-07-06 CAL703 TPE → MNL Jul 6, 06:00 UTCJul 6, 07:45 UTC1h 45m
2026-07-06 CAL111 - Jul 6, 04:00 UTCJul 6, 04:25 UTC25m
2026-07-06 CAL111 - Jul 6, 02:35 UTCJul 6, 02:45 UTC10m
2026-07-06 CAL110 TPE → FUK Jul 6, 00:30 UTCJul 6, 00:50 UTC20m
2026-07-05 CAL110 TPE → FUK Jul 5, 23:05 UTCJul 5, 23:30 UTC25m

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-18105 page for operator, model, and routing details .

Mode-S 89910B frequently asked

What is Mode-S code 89910B?
89910B is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18105.
Where is Mode-S 89910B registered?
Mode-S code 89910B is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89910B broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89910B, octal 42310413, decimal 9,015,563.
What flights does 89910B operate?
Mode-S 89910B has broadcast 20 distinct callsigns, including CAL103, CAL935, CAL127, CAL126, CAL102.