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
Broadcasting now · callsign CAL004 · 37,000 ft
Flights observed
234
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 21:30 UTC

Current position

899000 is currently broadcasting. Map zoomed to live position.

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
CAL761 China Airlines 18 2026-07-24
CAL081 - 17 2026-07-07
CAL054 China Airlines 17 2026-07-21
CAL082 - 16 2026-07-07
CAL053 China Airlines 13 2026-07-21
CAL052 - 13 2026-07-13
CAL051 - 13 2026-07-12
CAL762 China Airlines 10 2026-07-24
CAL074 China Airlines 10 2026-07-25
CAL073 China Airlines 10 2026-07-24
CAL061 China Airlines 9 2026-07-26
CAL062 - 8 2026-07-15
CAL753 China Airlines 6 2026-07-22
CAL501 - 6 2026-07-16
CAL064 - 6 2026-06-29
CAL784 - 5 2026-07-18
CAL063 China Airlines 5 2026-06-28
CAL832 - 4 2026-07-01
CAL831 - 4 2026-07-01
CAL754 China Airlines 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL061 TPE → FRA Jul 26, 15:20 UTCJul 26, 21:30 UTC6h 10m
2026-07-26 CAL101 NRT → TPE Jul 26, 06:05 UTCJul 26, 09:00 UTC2h 56m
2026-07-26 CAL100 TPE → NRT Jul 26, 01:10 UTCJul 26, 04:10 UTC3h 0m
2026-07-25 CAL074 AMS → TPE Jul 25, 09:20 UTCJul 25, 22:25 UTC13h 5m
2026-07-24 CAL073 TPE → AMS Jul 24, 16:25 UTCJul 25, 06:05 UTC13h 40m
2026-07-24 CAL762 CGK → TPE Jul 24, 09:55 UTCJul 24, 14:05 UTC4h 10m
2026-07-24 CAL761 TPE → CGK Jul 24, 06:10 UTCJul 24, 06:30 UTC20m
2026-07-24 CAL761 TPE → CGK Jul 24, 01:50 UTCJul 24, 04:50 UTC3h 0m
2026-07-23 CAL762 CGK → TPE Jul 23, 10:05 UTCJul 23, 13:10 UTC3h 5m
2026-07-23 CAL761 TPE → CGK Jul 23, 06:20 UTCJul 23, 06:35 UTC15m
2026-07-23 CAL761 TPE → CGK Jul 23, 01:45 UTCJul 23, 04:55 UTC3h 10m
2026-07-22 CAL754 SIN → TPE Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 CAL753 TPE → SIN Jul 22, 01:05 UTCJul 22, 05:20 UTC4h 15m
2026-07-21 CAL054 BNE → TPE Jul 21, 20:55 UTCJul 21, 21:15 UTC20m
2026-07-21 CAL054 BNE → TPE Jul 21, 13:00 UTCJul 21, 14:10 UTC1h 10m
2026-07-21 CAL054 BNE → TPE Jul 21, 07:35 UTCJul 21, 10:35 UTC3h 0m
2026-07-21 CAL053 TPE → BNE Jul 21, 03:10 UTCJul 21, 05:50 UTC2h 40m
2026-07-20 CAL053 TPE → BNE Jul 20, 16:10 UTCJul 21, 00:10 UTC8h 0m
2026-07-19 CAL054 BNE → TPE Jul 19, 13:00 UTCJul 19, 21:20 UTC8h 20m
2026-07-19 CAL054 BNE → TPE Jul 19, 07:45 UTCJul 19, 10:50 UTC3h 5m
2026-07-19 CAL053 - Jul 19, 03:15 UTCJul 19, 06:00 UTC2h 45m
2026-07-18 CAL053 - Jul 18, 16:35 UTCJul 19, 00:40 UTC8h 5m
2026-07-18 CAL784 TPE → TPE Jul 18, 06:10 UTCJul 18, 14:20 UTC8h 10m
2026-07-17 CAL023 POC → TPE Jul 17, 08:04 UTCJul 17, 20:35 UTC12h 30m
2026-07-16 CAL024 TPE → ONT Jul 16, 15:30 UTCJul 17, 02:15 UTC10h 45m
2026-07-16 CAL024 - Jul 16, 14:00 UTCJul 16, 14:10 UTC10m
2026-07-16 CAL502 - Jul 16, 06:15 UTCJul 16, 06:30 UTC15m
2026-07-16 CAL501 - Jul 16, 01:10 UTCJul 16, 01:30 UTC20m
2026-07-15 CAL062 - Jul 15, 09:50 UTCJul 15, 22:30 UTC12h 40m
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

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?
Yes. Mode-S 899000 is currently airborne.
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 CAL761, CAL081, CAL054, CAL082, CAL053.