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 Jul 26, 14:45 UTC
Flights observed
417
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 14:45 UTC

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
CAL195 China Airlines 7 2026-07-24
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
CAL794 China Airlines 5 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL794 HAN → TPE Jul 26, 13:30 UTCJul 26, 14:45 UTC1h 15m
2026-07-26 CAL794 HAN → TPE Jul 26, 11:40 UTCJul 26, 11:50 UTC10m
2026-07-26 CAL793 TPE → HAN Jul 26, 07:05 UTCJul 26, 09:30 UTC2h 25m
2026-07-26 CAL121 OKA → TPE Jul 26, 03:10 UTCJul 26, 04:20 UTC1h 10m
2026-07-26 CAL120 TPE → OKA Jul 26, 00:10 UTCJul 26, 00:40 UTC30m
2026-07-25 CAL123 OKA → TPE Jul 25, 13:00 UTCJul 25, 13:25 UTC25m
2026-07-25 CAL122 TPE → OKA Jul 25, 09:35 UTCJul 25, 10:00 UTC25m
2026-07-25 CAL705 TPE → CEB Jul 25, 01:05 UTCJul 25, 07:15 UTC6h 10m
2026-07-24 CAL7848 TSA → TPE Jul 24, 23:20 UTCJul 24, 23:45 UTC25m
2026-07-24 CAL195 KMJ → TPE Jul 24, 12:35 UTCJul 24, 14:00 UTC1h 25m
2026-07-24 CAL194 TPE → KMJ Jul 24, 07:45 UTCJul 24, 08:30 UTC45m
2026-07-24 MDA991 - Jul 24, 01:20 UTCJul 24, 06:20 UTC5h 0m
2026-07-23 CAL756 SIN → TPE Jul 23, 21:25 UTCJul 23, 22:35 UTC1h 10m
2026-07-23 CAL756 SIN → TPE Jul 23, 18:10 UTCJul 23, 18:20 UTC10m
2026-07-23 CAL755 TPE → SIN Jul 23, 12:10 UTCJul 23, 16:15 UTC4h 5m
2026-07-23 CAL029 - Jul 23, 10:15 UTCJul 23, 10:35 UTC20m
2026-07-23 CAL029 - Jul 23, 06:55 UTCJul 23, 07:25 UTC30m
2026-07-23 CAL030 TPE → ROR Jul 23, 02:15 UTCJul 23, 05:45 UTC3h 30m
2026-07-22 CAL838 BKK → TPE Jul 22, 20:15 UTCJul 22, 23:30 UTC3h 15m
2026-07-22 CAL837 TPE → BKK Jul 22, 15:05 UTCJul 22, 18:15 UTC3h 10m
2026-07-22 CAL123 OKA → TPE Jul 22, 13:00 UTCJul 22, 13:15 UTC15m
2026-07-22 CAL157 KIX → TPE Jul 22, 05:05 UTCJul 22, 05:25 UTC20m
2026-07-22 CAL156 TPE → KIX Jul 22, 02:05 UTCJul 22, 03:40 UTC1h 35m
2026-07-22 CAL156 TPE → KIX Jul 22, 01:20 UTCJul 22, 01:35 UTC15m
2026-07-21 CAL123 OKA → TPE Jul 21, 13:05 UTCJul 21, 13:30 UTC25m
2026-07-21 CAL122 TPE → OKA Jul 21, 09:40 UTCJul 21, 10:55 UTC1h 15m
2026-07-21 CAL153 KIX → TPE Jul 21, 08:00 UTCJul 21, 08:20 UTC20m
2026-07-21 CAL153 KIX → TPE Jul 21, 05:45 UTCJul 21, 07:25 UTC1h 40m
2026-07-21 CAL152 TPE → KIX Jul 21, 02:55 UTCJul 21, 03:35 UTC40m
2026-07-21 CAL152 TPE → KIX Jul 21, 01:15 UTCJul 21, 01:30 UTC15m
2026-07-20 CAL195 KMJ → TPE Jul 20, 11:50 UTCJul 20, 12:15 UTC25m
2026-07-20 CAL194 TPE → KMJ Jul 20, 07:25 UTCJul 20, 07:45 UTC20m
2026-07-20 MDA992 TPE → TPE Jul 20, 01:15 UTCJul 20, 05:35 UTC4h 20m
2026-07-19 CAL195 KMJ → TPE Jul 19, 11:15 UTCJul 19, 11:40 UTC25m
2026-07-19 CAL195 KMJ → TPE Jul 19, 09:55 UTCJul 19, 10:05 UTC10m
2026-07-19 CAL194 TPE → KMJ Jul 19, 06:40 UTCJul 19, 07:05 UTC25m
2026-07-19 CAL151 NGO → TPE Jul 19, 03:00 UTCJul 19, 03:25 UTC25m
2026-07-19 CAL151 NGO → TPE Jul 19, 01:05 UTCJul 19, 01:45 UTC40m
2026-07-18 CAL150 - Jul 18, 09:25 UTCJul 18, 11:50 UTC2h 25m
2026-07-18 CAL910 HKG → TPE Jul 18, 06:10 UTCJul 18, 07:40 UTC1h 30m
2026-07-18 CAL909 - Jul 18, 03:25 UTCJul 18, 04:35 UTC1h 10m
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

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 Jul 26, 14:45 UTC.
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.