Apparatus

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sensors Mode-S transponder

89900F

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18902 · AIRBUS A-350-900

Hex
89900F
Octal
42310017
Decimal
9,015,311
Country
TW
Tail
B-18902
Type
A359
No current signal · last broadcast 1h ago
Flights observed
150
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 89900F.

Country allocation

The ICAO 24-bit address 89900F 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 - 12 2026-06-14
CAL754 - 10 2026-06-28
CAL054 - 10 2026-06-27
CAL753 - 8 2026-06-28
CAL053 - 7 2026-06-27
CAL762 - 6 2026-06-14
CAL504 - 6 2026-06-30
CAL082 - 6 2026-07-08
CAL081 - 6 2026-07-08
CAL062 China Airlines 6 2026-06-29
CAL061 China Airlines 6 2026-06-28
CAL057 China Airlines 5 2026-06-01
CAL024 - 5 2026-07-04
CAL503 - 4 2026-07-06
CAL064 - 4 2026-07-07
CAL063 China Airlines 4 2026-07-06
CAL023 China Airlines 4 2026-07-05
CAL022 - 4 2026-07-13
CAL502 - 3 2026-06-30
CAL501 - 3 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAL021 - Jul 14, 09:25 UTCJul 14, 09:45 UTC20m
2026-07-13 CAL022 - Jul 13, 18:00 UTCJul 14, 03:25 UTC9h 25m
2026-07-13 CAL022 - Jul 13, 16:25 UTCJul 13, 16:50 UTC25m
2026-07-12 CAL781 TPE → TPE Jul 12, 23:35 UTCJul 13, 07:20 UTC7h 45m
2026-07-11 CAL832D - Jul 11, 23:35 UTCJul 12, 00:45 UTC1h 10m
2026-07-11 CAL832D - Jul 11, 21:25 UTCJul 11, 21:40 UTC15m
2026-07-10 CAL831 - Jul 10, 02:00 UTCJul 10, 05:05 UTC3h 5m
2026-07-08 CAL082 - Jul 8, 20:45 UTCJul 9, 06:45 UTC10h 0m
2026-07-08 CAL081 TPE → LHR Jul 8, 01:25 UTCJul 8, 15:40 UTC14h 15m
2026-07-07 CAL064 VIE → TPE Jul 7, 09:50 UTCJul 7, 21:25 UTC11h 35m
2026-07-06 CAL063 TPE → VIE Jul 6, 15:45 UTCJul 7, 04:35 UTC12h 50m
2026-07-06 CAL503 TPE → TPE Jul 6, 08:50 UTCJul 6, 13:25 UTC4h 35m
2026-07-05 CAL023 ONT → TPE Jul 5, 07:55 UTCJul 5, 21:10 UTC13h 15m
2026-07-04 CAL024 - Jul 4, 15:20 UTCJul 5, 01:35 UTC10h 15m
2026-07-04 CAL024 - Jul 4, 13:50 UTCJul 4, 14:05 UTC15m
2026-07-03 CAL064 VIE → TPE Jul 3, 09:30 UTCJul 3, 21:10 UTC11h 40m
2026-07-02 CAL063 TPE → VIE Jul 2, 16:10 UTCJul 3, 04:35 UTC12h 25m
2026-07-02 CAL503 TPE → TPE Jul 2, 08:50 UTCJul 2, 13:40 UTC4h 50m
2026-07-02 CAL157 KIX → TPE Jul 2, 04:30 UTCJul 2, 06:55 UTC2h 25m
2026-07-02 CAL156 TPE → KIX Jul 2, 00:55 UTCJul 2, 03:10 UTC2h 15m
2026-07-01 CAL076 - Jul 1, 09:25 UTCJul 1, 21:20 UTC11h 55m
2026-06-30 CAL075 - Jun 30, 21:05 UTCJul 1, 05:35 UTC8h 30m
2026-06-30 CAL075 - Jun 30, 16:30 UTCJun 30, 21:00 UTC4h 30m
2026-06-30 CAL504 - Jun 30, 08:50 UTCJun 30, 13:50 UTC5h 0m
2026-06-30 CAL502 TPE → TPE Jun 30, 01:09 UTCJun 30, 06:05 UTC4h 56m
2026-06-29 CAL062 FRA → TPE Jun 29, 09:44 UTCJun 29, 22:00 UTC12h 15m
2026-06-28 CAL061 TPE → FRA Jun 28, 14:50 UTCJun 29, 04:09 UTC13h 20m
2026-06-28 CAL754 - Jun 28, 09:25 UTCJun 28, 10:30 UTC1h 5m
2026-06-28 CAL754 - Jun 28, 06:15 UTCJun 28, 06:24 UTC10m
2026-06-28 CAL753 - Jun 28, 03:59 UTCJun 28, 04:20 UTC20m
2026-06-28 CAL753 - Jun 28, 00:35 UTCJun 28, 01:29 UTC55m
2026-06-27 CAL054 - Jun 27, 21:15 UTCJun 27, 21:29 UTC15m
2026-06-27 CAL054 - Jun 27, 13:04 UTCJun 27, 14:29 UTC1h 25m
2026-06-27 CAL054 - Jun 27, 07:49 UTCJun 27, 08:20 UTC30m
2026-06-27 CAL053 BNE → AKL Jun 27, 03:09 UTCJun 27, 05:49 UTC2h 40m
2026-06-26 CAL053 - Jun 26, 16:30 UTCJun 27, 00:34 UTC8h 5m
2026-06-26 CAL504 - Jun 26, 13:15 UTCJun 26, 13:45 UTC30m
2026-06-26 CAL503 - Jun 26, 08:50 UTCJun 26, 09:05 UTC15m
2026-06-26 CAL502 - Jun 26, 06:04 UTCJun 26, 06:29 UTC25m
2026-06-26 CAL501 - Jun 26, 01:50 UTCJun 26, 02:09 UTC20m
2026-06-17 CAL082 - Jun 17, 20:25 UTCJun 18, 05:35 UTC9h 10m
2026-06-17 CAL081 - Jun 17, 01:35 UTCJun 17, 16:00 UTC14h 25m
2026-06-16 CAL062 FRA → TPE Jun 16, 09:40 UTCJun 16, 21:40 UTC12h 1m
2026-06-15 CAL061 TPE → FRA Jun 15, 14:55 UTCJun 16, 04:45 UTC13h 50m
2026-06-15 CAL502 - Jun 15, 05:45 UTCJun 15, 06:10 UTC25m
2026-06-15 CAL501 - Jun 15, 01:20 UTCJun 15, 01:50 UTC30m
2026-06-14 CAL762 - Jun 14, 09:30 UTCJun 14, 12:55 UTC3h 25m
2026-06-14 CAL761 - Jun 14, 05:55 UTCJun 14, 06:15 UTC20m
2026-06-14 CAL761 - Jun 14, 01:30 UTCJun 14, 04:35 UTC3h 6m
2026-06-13 CAL062 FRA → TPE Jun 13, 09:55 UTCJun 13, 21:50 UTC11h 55m

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-18902 page for operator, model, and routing details .

Mode-S 89900F frequently asked

What is Mode-S code 89900F?
89900F is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18902.
Where is Mode-S 89900F registered?
Mode-S code 89900F is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89900F 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 89900F, octal 42310017, decimal 9,015,311.
What flights does 89900F operate?
Mode-S 89900F has broadcast 20 distinct callsigns, including CAL761, CAL754, CAL054, CAL753, CAL053.