Apparatus

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sensors Mode-S transponder

899000

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18901 · AIRBUS A-350-900

Hex
899000
Octal
42310000
Decimal
9,015,296
Country
TW
Tail
B-18901
Type
A359
No current signal · last broadcast 1h ago
Flights observed
206
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 899000.

Country allocation

The ICAO 24-bit address 899000 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
CAL081 - 17 2026-07-07
CAL082 - 16 2026-07-07
CAL761 - 14 2026-07-03
CAL052 - 13 2026-07-13
CAL051 - 13 2026-07-12
CAL054 - 12 2026-06-14
CAL074 - 9 2026-06-24
CAL073 China Airlines 9 2026-06-23
CAL053 - 9 2026-06-14
CAL762 - 8 2026-07-03
CAL062 - 8 2026-07-15
CAL061 - 8 2026-07-14
CAL064 - 6 2026-06-29
CAL753 China Airlines 5 2026-05-22
CAL501 - 5 2026-07-10
CAL063 China Airlines 5 2026-06-28
CAL832 - 4 2026-07-01
CAL831 - 4 2026-07-01
CAL784 - 4 2026-06-25
CAL754 China Airlines 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 CAL062 - Jul 15, 09:50 UTCJul 15, 15:55 UTC6h 5m
2026-07-14 CAL061 TPE → FRA Jul 14, 15:20 UTCJul 15, 04:45 UTC13h 24m
2026-07-14 CAL502 - Jul 14, 01:15 UTCJul 14, 06:15 UTC5h 0m
2026-07-13 CAL052 SYD → TPE Jul 13, 12:30 UTCJul 13, 21:20 UTC8h 50m
2026-07-12 CAL051 - Jul 12, 16:10 UTCJul 13, 00:35 UTC8h 25m
2026-07-12 CAL924D HKG → TPE Jul 12, 01:20 UTCJul 12, 02:45 UTC1h 25m
2026-07-10 CAL923 - Jul 10, 09:50 UTCJul 10, 11:05 UTC1h 15m
2026-07-10 CAL501 - Jul 10, 01:15 UTCJul 10, 06:25 UTC5h 10m
2026-07-09 CAL052 SYD → TPE Jul 9, 12:20 UTCJul 9, 21:35 UTC9h 15m
2026-07-08 CAL051 - Jul 8, 15:55 UTCJul 9, 00:00 UTC8h 5m
2026-07-07 CAL082 - Jul 7, 20:45 UTCJul 8, 09:35 UTC12h 50m
2026-07-07 CAL081 TPE → LHR Jul 7, 01:25 UTCJul 7, 15:35 UTC14h 10m
2026-07-06 CAL062 FRA → TPE Jul 6, 09:35 UTCJul 6, 21:50 UTC12h 15m
2026-07-05 CAL061 TPE → FRA Jul 5, 15:15 UTCJul 6, 05:05 UTC13h 50m
2026-07-04 CAL062 FRA → TPE Jul 4, 09:50 UTCJul 4, 21:55 UTC12h 5m
2026-07-03 CAL061 TPE → FRA Jul 3, 16:15 UTCJul 4, 05:40 UTC13h 25m
2026-07-03 CAL762 - Jul 3, 10:35 UTCJul 3, 14:00 UTC3h 25m
2026-07-03 CAL761 - Jul 3, 05:50 UTCJul 3, 06:40 UTC50m
2026-07-03 CAL761 - Jul 3, 01:30 UTCJul 3, 04:35 UTC3h 5m
2026-07-02 CAL062 FRA → TPE Jul 2, 10:00 UTCJul 2, 22:20 UTC12h 20m
2026-07-01 CAL061 TPE → FRA Jul 1, 15:00 UTCJul 2, 04:15 UTC13h 15m
2026-07-01 CAL832 - Jul 1, 09:30 UTCJul 1, 09:55 UTC25m
2026-07-01 CAL832 - Jul 1, 06:40 UTCJul 1, 06:55 UTC15m
2026-07-01 CAL831 - Jul 1, 04:50 UTCJul 1, 05:05 UTC15m
2026-07-01 CAL831 - Jul 1, 02:05 UTCJul 1, 03:05 UTC1h 0m
2026-06-30 CAL762 - Jun 30, 09:40 UTCJun 30, 12:55 UTC3h 15m
2026-06-30 CAL761 - Jun 30, 06:10 UTCJun 30, 06:25 UTC15m
2026-06-30 CAL761 - Jun 30, 01:45 UTCJun 30, 04:45 UTC3h 0m
2026-06-29 CAL064 VIE → TPE Jun 29, 10:10 UTCJun 29, 21:44 UTC11h 35m
2026-06-28 CAL063 TPE → VIE Jun 28, 17:39 UTCJun 29, 06:24 UTC12h 45m
2026-06-27 CAL082 - Jun 27, 21:40 UTCJun 28, 10:50 UTC13h 10m
2026-06-27 CAL081 - Jun 27, 01:19 UTCJun 27, 15:30 UTC14h 10m
2026-06-26 CAL064 - Jun 26, 20:40 UTCJun 26, 21:04 UTC25m
2026-06-26 CAL064 - Jun 26, 09:39 UTCJun 26, 20:04 UTC10h 25m
2026-06-25 CAL063 TPE → VIE Jun 25, 17:25 UTCJun 26, 06:04 UTC12h 40m
2026-06-25 CAL784 TPE → TPE Jun 25, 06:09 UTCJun 25, 14:55 UTC8h 45m
2026-06-24 CAL074 AMS → TPE Jun 24, 09:59 UTCJun 24, 22:39 UTC12h 40m
2026-06-23 CAL073 TPE → AMS Jun 23, 15:50 UTCJun 24, 05:15 UTC13h 25m
2026-06-23 CAL762 - Jun 23, 09:40 UTCJun 23, 13:00 UTC3h 20m
2026-06-23 CAL761 - Jun 23, 06:04 UTCJun 23, 06:19 UTC15m
2026-06-23 CAL761 - Jun 23, 01:30 UTCJun 23, 04:39 UTC3h 10m
2026-06-22 CAL064 VIE → TPE Jun 22, 09:49 UTCJun 22, 21:25 UTC11h 35m
2026-06-21 CAL063 TPE → VIE Jun 21, 16:30 UTCJun 22, 05:10 UTC12h 40m
2026-06-21 CAL503 TPE → TPE Jun 21, 08:49 UTCJun 21, 13:44 UTC4h 55m
2026-06-21 CAL157 KIX → TPE Jun 21, 04:24 UTCJun 21, 06:55 UTC2h 30m
2026-06-21 CAL156 - Jun 21, 02:04 UTCJun 21, 02:50 UTC45m
2026-06-21 CAL156 - Jun 21, 00:34 UTCJun 21, 00:49 UTC15m
2026-06-20 CAL501 TPE → TPE Jun 20, 01:09 UTCJun 20, 05:49 UTC4h 40m
2026-06-19 CAL064 VIE → TPE Jun 19, 09:49 UTCJun 19, 21:19 UTC11h 30m
2026-06-18 CAL063 TPE → VIE Jun 18, 16:45 UTCJun 19, 05:40 UTC12h 54m

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-18901 page for operator, model, and routing details .

Mode-S 899000 frequently asked

What is Mode-S code 899000?
899000 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18901.
Where is Mode-S 899000 registered?
Mode-S code 899000 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899000 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 899000, octal 42310000, decimal 9,015,296.
What flights does 899000 operate?
Mode-S 899000 has broadcast 20 distinct callsigns, including CAL081, CAL082, CAL761, CAL052, CAL051.