Apparatus

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sensors Mode-S transponder

899109

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18102 · AIRBUS A-321neo

Hex
899109
Octal
42310411
Decimal
9,015,561
Country
TW
Tail
B-18102
Type
A21N
No current signal · last broadcast 10h ago
Flights observed
321
Distinct callsigns
20
Country
TW
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 899109.

Country allocation

The ICAO 24-bit address 899109 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
CAL107 - 12 2026-06-29
CAL106 - 12 2026-07-14
CAL528 - 11 2026-06-29
CAL527 - 10 2026-06-29
CAL179 - 10 2026-07-02
CAL909 - 9 2026-07-01
CAL731 - 9 2026-07-10
CAL151 - 9 2026-07-02
CAL756 China Airlines 8 2026-06-23
CAL755 - 8 2026-06-23
CAL601 China Airlines 8 2026-06-11
CAL178 - 7 2026-07-02
CAL155 - 7 2026-06-22
CAL910 - 6 2026-07-01
CAL187 - 6 2026-06-22
CAL732 - 5 2026-07-09
CAL705 - 5 2026-06-28
CAL602 China Airlines 5 2026-06-11
CAL517 China Airlines 5 2026-06-11
CAL189 - 5 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAL106 - Jul 14, 08:45 UTCJul 14, 11:50 UTC3h 5m
2026-07-14 CAL157 - Jul 14, 05:00 UTCJul 14, 07:25 UTC2h 25m
2026-07-14 CAL156 - Jul 14, 01:05 UTCJul 14, 03:25 UTC2h 20m
2026-07-13 CAL838 - Jul 13, 22:30 UTCJul 13, 23:25 UTC55m
2026-07-13 CAL838 - Jul 13, 20:10 UTCJul 13, 20:25 UTC15m
2026-07-13 CAL837 - Jul 13, 14:55 UTCJul 13, 15:50 UTC55m
2026-07-13 CAL029 ROR → TPE Jul 13, 07:05 UTCJul 13, 10:30 UTC3h 25m
2026-07-13 CAL030 TPE → ROR Jul 13, 02:15 UTCJul 13, 05:45 UTC3h 30m
2026-07-12 CAL706 TPE → TPE Jul 12, 00:35 UTCJul 12, 06:45 UTC6h 10m
2026-07-11 CAL732D - Jul 11, 21:30 UTCJul 11, 22:30 UTC1h 0m
2026-07-10 CAL731 - Jul 10, 05:45 UTCJul 10, 06:00 UTC15m
2026-07-10 CAL731 - Jul 10, 01:50 UTCJul 10, 02:35 UTC45m
2026-07-09 CAL732 - Jul 9, 11:20 UTCJul 9, 12:25 UTC1h 5m
2026-07-09 CAL731 - Jul 9, 05:45 UTCJul 9, 06:00 UTC15m
2026-07-09 CAL731 - Jul 9, 01:55 UTCJul 9, 02:40 UTC45m
2026-07-02 CAL179 - Jul 2, 12:00 UTCJul 2, 12:25 UTC25m
2026-07-02 CAL179 - Jul 2, 10:10 UTCJul 2, 10:35 UTC25m
2026-07-02 CAL178 - Jul 2, 06:45 UTCJul 2, 08:55 UTC2h 10m
2026-07-02 CAL151 - Jul 2, 01:10 UTCJul 2, 03:40 UTC2h 30m
2026-07-01 CAL150 - Jul 1, 09:35 UTCJul 1, 11:55 UTC2h 20m
2026-07-01 CAL910 HKG → TPE Jul 1, 06:30 UTCJul 1, 07:50 UTC1h 20m
2026-07-01 CAL909 - Jul 1, 04:40 UTCJul 1, 05:00 UTC20m
2026-07-01 CAL909 - Jul 1, 03:40 UTCJul 1, 04:10 UTC30m
2026-06-30 CAL838 BKK → TPE Jun 30, 20:05 UTCJun 30, 23:20 UTC3h 15m
2026-06-30 CAL837 - Jun 30, 15:15 UTCJun 30, 18:35 UTC3h 20m
2026-06-30 CAL195 - Jun 30, 07:00 UTCJun 30, 12:00 UTC5h 0m
2026-06-30 CAL119 - Jun 30, 05:05 UTCJun 30, 05:35 UTC30m
2026-06-30 CAL118 - Jun 30, 00:25 UTCJun 30, 00:39 UTC15m
2026-06-29 CAL528 - Jun 29, 11:25 UTCJun 29, 11:55 UTC30m
2026-06-29 CAL528 - Jun 29, 10:24 UTCJun 29, 10:34 UTC10m
2026-06-29 CAL527 - Jun 29, 07:25 UTCJun 29, 08:44 UTC1h 20m
2026-06-29 CAL107 NRT → TPE Jun 29, 01:34 UTCJun 29, 04:50 UTC3h 15m
2026-06-28 CAL106 - Jun 28, 08:34 UTCJun 28, 11:19 UTC2h 45m
2026-06-28 CAL705 TPE → TPE Jun 28, 00:35 UTCJun 28, 06:34 UTC6h 0m
2026-06-27 CAL179 - Jun 27, 12:45 UTCJun 27, 13:20 UTC35m
2026-06-27 CAL179 - Jun 27, 10:45 UTCJun 27, 11:14 UTC30m
2026-06-27 CAL178 - Jun 27, 07:24 UTCJun 27, 09:24 UTC2h 0m
2026-06-27 CAL119 - Jun 27, 05:29 UTCJun 27, 05:49 UTC20m
2026-06-27 CAL118 - Jun 27, 00:14 UTCJun 27, 00:29 UTC15m
2026-06-26 CAL528 - Jun 26, 11:30 UTCJun 26, 12:00 UTC30m
2026-06-26 CAL528 - Jun 26, 10:35 UTCJun 26, 10:44 UTC10m
2026-06-26 CAL527 - Jun 26, 07:45 UTCJun 26, 08:15 UTC30m
2026-06-26 CAL189 - Jun 26, 05:44 UTCJun 26, 06:04 UTC20m
2026-06-26 CAL189 - Jun 26, 04:10 UTCJun 26, 04:24 UTC15m
2026-06-26 CAL188 - Jun 26, 02:09 UTCJun 26, 02:30 UTC20m
2026-06-26 CAL188 - Jun 26, 00:45 UTCJun 26, 00:59 UTC15m
2026-06-25 CAL109 - Jun 25, 14:29 UTCJun 25, 14:59 UTC30m
2026-06-25 CAL109 - Jun 25, 11:50 UTCJun 25, 13:05 UTC1h 15m
2026-06-25 CAL108 TPE → NRT Jun 25, 07:09 UTCJun 25, 09:59 UTC2h 50m
2026-06-25 CAL151 - Jun 25, 03:29 UTCJun 25, 03:50 UTC20m

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-18102 page for operator, model, and routing details .

Mode-S 899109 frequently asked

What is Mode-S code 899109?
899109 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18102.
Where is Mode-S 899109 registered?
Mode-S code 899109 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899109 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899109, octal 42310411, decimal 9,015,561.
What flights does 899109 operate?
Mode-S 899109 has broadcast 20 distinct callsigns, including CAL107, CAL106, CAL528, CAL527, CAL179.