Apparatus

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sensors Mode-S transponder

899108

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18101 · AIRBUS A-321neo

Hex
899108
Octal
42310410
Decimal
9,015,560
Country
TW
Tail
B-18101
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
380
Distinct callsigns
15
Country
TW
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 899108.

Country allocation

The ICAO 24-bit address 899108 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 15 distinct

Callsign Airline Flights Last seen
CAL177 - 95 2026-07-13
CAL165 - 90 2026-07-13
CAL164 - 88 2026-07-12
CAL176 - 86 2026-07-13
CAL933 - 3 2026-07-13
CAL139 China Airlines 3 2026-05-19
CAL127 China Airlines 3 2026-04-17
CAL126 China Airlines 3 2026-04-17
CAL934 China Airlines 2 2026-04-17
CAL105 China Airlines 2 2026-04-24
CAL7842 China Airlines 1 2026-04-23
CAL7841 - 1 2026-04-25
CAL199 China Airlines 1 2026-05-24
CAL138 China Airlines 1 2026-05-18
CAL104 China Airlines 1 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CAL933 KHH → HKG Jul 13, 23:45 UTCJul 14, 00:55 UTC1h 10m
2026-07-13 CAL177 - Jul 13, 11:50 UTCJul 13, 14:25 UTC2h 35m
2026-07-13 CAL176 - Jul 13, 07:40 UTCJul 13, 10:25 UTC2h 45m
2026-07-13 CAL165 ICN → KHH Jul 13, 03:20 UTCJul 13, 05:50 UTC2h 30m
2026-07-12 CAL164 KHH → ICN Jul 12, 23:10 UTCJul 13, 01:40 UTC2h 30m
2026-07-12 CAL177 - Jul 12, 11:55 UTCJul 12, 14:35 UTC2h 40m
2026-07-12 CAL176 KHH → KIX Jul 12, 07:45 UTCJul 12, 10:25 UTC2h 40m
2026-07-12 CAL165 ICN → KHH Jul 12, 03:15 UTCJul 12, 05:45 UTC2h 30m
2026-07-11 CAL164 KHH → ICN Jul 11, 23:05 UTCJul 12, 01:35 UTC2h 30m
2026-07-11 CAL177 - Jul 11, 11:55 UTCJul 11, 14:40 UTC2h 45m
2026-07-10 CAL176 KHH → KIX Jul 10, 07:50 UTCJul 10, 10:35 UTC2h 45m
2026-07-10 CAL165 ICN → KHH Jul 10, 03:35 UTCJul 10, 06:00 UTC2h 25m
2026-07-09 CAL164 KHH → ICN Jul 9, 23:20 UTCJul 10, 02:00 UTC2h 40m
2026-07-09 CAL177 KIX → KHH Jul 9, 11:50 UTCJul 9, 14:30 UTC2h 40m
2026-07-09 CAL176 KHH → KIX Jul 9, 07:40 UTCJul 9, 10:25 UTC2h 45m
2026-07-09 CAL165 - Jul 9, 04:05 UTCJul 9, 05:55 UTC1h 50m
2026-07-09 CAL165 - Jul 9, 03:30 UTCJul 9, 04:00 UTC30m
2026-07-08 CAL164 KHH → ICN Jul 8, 23:15 UTCJul 9, 01:55 UTC2h 40m
2026-07-08 CAL165 ICN → KHH Jul 8, 05:25 UTCJul 8, 08:00 UTC2h 35m
2026-07-07 CAL164 KHH → ICN Jul 7, 23:05 UTCJul 8, 01:30 UTC2h 25m
2026-07-07 CAL177 KIX → KHH Jul 7, 11:45 UTCJul 7, 14:25 UTC2h 40m
2026-07-07 CAL176 KHH → KIX Jul 7, 07:40 UTCJul 7, 10:20 UTC2h 40m
2026-07-07 CAL165 - Jul 7, 03:25 UTCJul 7, 06:00 UTC2h 35m
2026-07-06 CAL164 KHH → ICN Jul 6, 23:20 UTCJul 7, 01:50 UTC2h 30m
2026-07-06 CAL177 - Jul 6, 11:55 UTCJul 6, 14:40 UTC2h 45m
2026-07-06 CAL176 KHH → KIX Jul 6, 07:55 UTCJul 6, 10:25 UTC2h 30m
2026-07-06 CAL165 ICN → KHH Jul 6, 03:55 UTCJul 6, 06:20 UTC2h 25m
2026-07-05 CAL164 KHH → ICN Jul 5, 23:15 UTCJul 6, 01:45 UTC2h 30m
2026-07-05 CAL164 KHH → ICN Jul 5, 23:05 UTCJul 5, 23:10 UTC5m
2026-07-05 CAL177 KIX → KHH Jul 5, 11:55 UTCJul 5, 14:40 UTC2h 45m
2026-07-05 CAL176 KHH → KIX Jul 5, 07:45 UTCJul 5, 10:25 UTC2h 40m
2026-07-05 CAL165 - Jul 5, 03:30 UTCJul 5, 06:00 UTC2h 30m
2026-07-04 CAL164 KHH → ICN Jul 4, 23:05 UTCJul 5, 01:30 UTC2h 25m
2026-07-04 CAL177 KIX → KHH Jul 4, 11:40 UTCJul 4, 14:25 UTC2h 45m
2026-07-04 CAL176 KHH → KIX Jul 4, 07:35 UTCJul 4, 10:10 UTC2h 35m
2026-07-04 CAL165 - Jul 4, 03:20 UTCJul 4, 05:50 UTC2h 30m
2026-07-03 CAL164 KHH → ICN Jul 3, 23:20 UTCJul 4, 01:50 UTC2h 30m
2026-07-03 CAL177 - Jul 3, 11:50 UTCJul 3, 14:30 UTC2h 40m
2026-07-03 CAL176 KHH → KIX Jul 3, 07:35 UTCJul 3, 10:15 UTC2h 40m
2026-07-03 CAL165 ICN → KHH Jul 3, 03:20 UTCJul 3, 05:45 UTC2h 25m
2026-07-02 CAL164 KHH → ICN Jul 2, 23:10 UTCJul 3, 01:40 UTC2h 30m
2026-07-02 CAL177 KIX → KHH Jul 2, 11:50 UTCJul 2, 14:30 UTC2h 40m
2026-07-02 CAL176 KHH → KIX Jul 2, 07:40 UTCJul 2, 10:10 UTC2h 30m
2026-07-02 CAL165 ICN → KHH Jul 2, 03:15 UTCJul 2, 05:45 UTC2h 30m
2026-07-01 CAL164 KHH → ICN Jul 1, 23:05 UTCJul 2, 01:35 UTC2h 30m
2026-07-01 CAL177 KIX → KHH Jul 1, 11:50 UTCJul 1, 14:40 UTC2h 50m
2026-07-01 CAL176 KHH → KIX Jul 1, 07:50 UTCJul 1, 10:25 UTC2h 35m
2026-07-01 CAL165 ICN → KHH Jul 1, 03:45 UTCJul 1, 06:20 UTC2h 35m
2026-06-30 CAL164 KHH → ICN Jun 30, 23:15 UTCJul 1, 01:45 UTC2h 30m
2026-06-30 CAL177 KIX → KHH Jun 30, 11:50 UTCJun 30, 14:40 UTC2h 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-18101 page for operator, model, and routing details .

Mode-S 899108 frequently asked

What is Mode-S code 899108?
899108 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18101.
Where is Mode-S 899108 registered?
Mode-S code 899108 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899108 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899108, octal 42310410, decimal 9,015,560.
What flights does 899108 operate?
Mode-S 899108 has broadcast 15 distinct callsigns, including CAL177, CAL165, CAL164, CAL176, CAL933.