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 Jul 26, 21:45 UTC
Flights observed
182
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 21:45 UTC

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 China Airlines 16 2026-07-26
CAL054 China Airlines 14 2026-07-25
CAL754 China Airlines 12 2026-07-19
CAL053 China Airlines 12 2026-07-24
CAL753 - 11 2026-07-19
CAL762 China Airlines 9 2026-07-26
CAL504 China Airlines 7 2026-07-24
CAL082 China Airlines 7 2026-07-21
CAL081 China Airlines 7 2026-07-21
CAL063 China Airlines 6 2026-07-26
CAL062 China Airlines 6 2026-06-29
CAL061 China Airlines 6 2026-06-28
CAL503 China Airlines 5 2026-07-24
CAL064 China Airlines 5 2026-07-23
CAL057 China Airlines 5 2026-06-01
CAL052 China Airlines 5 2026-07-20
CAL024 - 5 2026-07-04
CAL051 China Airlines 4 2026-07-19
CAL023 China Airlines 4 2026-07-05
CAL022 - 4 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL063 TPE → VIE Jul 26, 15:50 UTCJul 26, 21:45 UTC5h 55m
2026-07-26 CAL762 CGK → TPE Jul 26, 09:45 UTCJul 26, 13:10 UTC3h 25m
2026-07-26 CAL762 CGK → TPE Jul 26, 08:05 UTCJul 26, 08:15 UTC10m
2026-07-26 CAL761 TPE → CGK Jul 26, 05:50 UTCJul 26, 06:10 UTC20m
2026-07-26 CAL761 TPE → CGK Jul 26, 01:30 UTCJul 26, 04:30 UTC3h 0m
2026-07-25 CAL054 BNE → TPE Jul 25, 12:50 UTCJul 25, 21:10 UTC8h 20m
2026-07-24 CAL053 TPE → BNE Jul 24, 23:05 UTCJul 25, 00:20 UTC1h 15m
2026-07-24 CAL053 TPE → BNE Jul 24, 16:15 UTCJul 24, 16:35 UTC20m
2026-07-24 CAL504 PVG → TPE Jul 24, 13:30 UTCJul 24, 14:25 UTC55m
2026-07-24 CAL503 TPE → PVG Jul 24, 08:50 UTCJul 24, 09:35 UTC45m
2026-07-23 CAL064 VIE → TPE Jul 23, 09:30 UTCJul 23, 21:00 UTC11h 30m
2026-07-22 CAL063 TPE → VIE Jul 22, 15:55 UTCJul 23, 04:30 UTC12h 35m
2026-07-21 CAL082 LHR → TPE Jul 21, 20:45 UTCJul 22, 05:25 UTC8h 40m
2026-07-21 CAL081 TPE → LHR Jul 21, 01:25 UTCJul 21, 15:40 UTC14h 15m
2026-07-20 CAL052 SYD → TPE Jul 20, 12:20 UTCJul 20, 21:10 UTC8h 50m
2026-07-19 CAL051 TPE → SYD Jul 19, 15:50 UTCJul 20, 00:25 UTC8h 35m
2026-07-19 CAL754 SIN → TPE Jul 19, 09:05 UTCJul 19, 10:30 UTC1h 25m
2026-07-19 CAL753 - Jul 19, 04:00 UTCJul 19, 04:20 UTC20m
2026-07-19 CAL753 - Jul 19, 00:35 UTCJul 19, 01:35 UTC1h 0m
2026-07-18 CAL054 BNE → TPE Jul 18, 21:00 UTCJul 18, 21:15 UTC15m
2026-07-18 CAL054 BNE → TPE Jul 18, 12:55 UTCJul 18, 14:05 UTC1h 10m
2026-07-18 CAL054 BNE → TPE Jul 18, 07:50 UTCJul 18, 10:55 UTC3h 5m
2026-07-18 CAL053 - Jul 18, 05:40 UTCJul 18, 06:00 UTC20m
2026-07-18 CAL053 - Jul 18, 03:25 UTCJul 18, 04:10 UTC45m
2026-07-17 CAL053 TPE → BNE Jul 17, 16:24 UTCJul 18, 00:35 UTC8h 10m
2026-07-17 CAL762 - Jul 17, 10:20 UTCJul 17, 13:29 UTC3h 10m
2026-07-17 CAL761 - Jul 17, 06:29 UTCJul 17, 06:45 UTC15m
2026-07-17 CAL761 - Jul 17, 01:49 UTCJul 17, 04:59 UTC3h 10m
2026-07-16 CAL052 SYD → TPE Jul 16, 12:25 UTCJul 16, 21:00 UTC8h 35m
2026-07-15 CAL051 - Jul 15, 15:50 UTCJul 16, 00:45 UTC8h 55m
2026-07-15 CAL754 - Jul 15, 09:45 UTCJul 15, 11:00 UTC1h 15m
2026-07-15 CAL753 - Jul 15, 00:45 UTCJul 15, 04:25 UTC3h 40m
2026-07-14 CAL021 SEA → TPE Jul 14, 09:25 UTCJul 14, 21:05 UTC11h 40m
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

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 Jul 26, 21:45 UTC.
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, CAL054, CAL754, CAL053, CAL753.