Apparatus

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sensors Mode-S transponder

89901F

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18006 · BOEING 777-300ER

Hex
89901F
Octal
42310037
Decimal
9,015,327
Country
TW
Tail
B-18006
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
207
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 89901F.

Country allocation

The ICAO 24-bit address 89901F 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
CAL031 China Airlines 28 2026-07-02
CAL032 China Airlines 22 2026-07-01
CAL024 - 17 2026-07-08
CAL012 - 16 2026-07-14
CAL023 - 12 2026-07-09
CAL011 - 12 2026-07-13
CAL772 China Airlines 11 2026-05-22
CAL782 - 9 2026-07-13
CAL004 - 8 2026-06-16
CAL722 - 7 2026-07-03
CAL721 - 6 2026-07-03
CAL003 - 6 2026-06-17
CAL771 - 5 2026-07-05
CAL157 China Airlines 5 2026-06-04
CAL101 - 5 2026-06-19
CAL1806 China Airlines 4 2026-06-12
CAL156 China Airlines 4 2026-06-04
CAL100 - 4 2026-06-19
CAL783 - 3 2026-07-10
CAL781 - 3 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAL012 - Jul 14, 11:50 UTCJul 14, 12:40 UTC50m
2026-07-14 CAL012 - Jul 14, 09:55 UTCJul 14, 10:15 UTC20m
2026-07-13 CAL782 - Jul 13, 23:45 UTCJul 14, 07:30 UTC7h 45m
2026-07-13 CAL011 - Jul 13, 06:20 UTCJul 13, 21:30 UTC15h 10m
2026-07-12 CAL012 - Jul 12, 12:50 UTCJul 13, 01:30 UTC12h 40m
2026-07-12 CAL012 - Jul 12, 11:01 UTCJul 12, 11:20 UTC20m
2026-07-12 CAL161 - Jul 12, 05:50 UTCJul 12, 06:20 UTC30m
2026-07-12 CAL161 - Jul 12, 04:20 UTCJul 12, 05:01 UTC40m
2026-07-12 CAL160 TPE → ICN Jul 12, 00:20 UTCJul 12, 02:25 UTC2h 5m
2026-07-11 CAL784D - Jul 11, 20:55 UTCJul 11, 22:05 UTC1h 10m
2026-07-10 CAL783 - Jul 10, 06:10 UTCJul 10, 06:55 UTC45m
2026-07-09 CAL023 - Jul 9, 20:45 UTCJul 9, 21:10 UTC25m
2026-07-09 CAL023 - Jul 9, 08:00 UTCJul 9, 19:30 UTC11h 30m
2026-07-08 CAL024 - Jul 8, 15:10 UTCJul 9, 01:25 UTC10h 15m
2026-07-08 CAL024 - Jul 8, 13:40 UTCJul 8, 13:55 UTC15m
2026-07-07 CAL023 ONT → TPE Jul 7, 08:10 UTCJul 7, 21:20 UTC13h 10m
2026-07-06 CAL024 - Jul 6, 15:00 UTCJul 7, 01:05 UTC10h 5m
2026-07-06 CAL024 - Jul 6, 13:30 UTCJul 6, 13:45 UTC15m
2026-07-06 CAL782 - Jul 6, 00:35 UTCJul 6, 08:20 UTC7h 45m
2026-07-05 CAL771 TPE → TPE Jul 5, 01:50 UTCJul 5, 13:10 UTC11h 20m
2026-07-04 CAL023 ONT → TPE Jul 4, 08:00 UTCJul 4, 21:10 UTC13h 10m
2026-07-03 CAL024 - Jul 3, 16:00 UTCJul 4, 01:45 UTC9h 45m
2026-07-03 CAL024 - Jul 3, 14:15 UTCJul 3, 14:30 UTC15m
2026-07-03 CAL722 - Jul 3, 07:50 UTCJul 3, 12:10 UTC4h 20m
2026-07-03 CAL721 - Jul 3, 01:40 UTCJul 3, 05:55 UTC4h 15m
2026-07-02 CAL031 YVR → TPE Jul 2, 10:00 UTCJul 2, 21:40 UTC11h 40m
2026-07-01 CAL032 TPE → YVR Jul 1, 16:05 UTCJul 2, 02:10 UTC10h 5m
2026-07-01 CAL722 - Jul 1, 07:30 UTCJul 1, 11:55 UTC4h 25m
2026-07-01 CAL721 - Jul 1, 01:20 UTCJul 1, 05:25 UTC4h 5m
2026-06-30 CAL023 ONT → TPE Jun 30, 07:20 UTCJun 30, 20:30 UTC13h 10m
2026-06-29 CAL024 - Jun 29, 15:24 UTCJun 30, 01:00 UTC9h 35m
2026-06-29 CAL024 - Jun 29, 13:39 UTCJun 29, 13:54 UTC15m
2026-06-28 CAL011 - Jun 28, 21:24 UTCJun 28, 21:45 UTC20m
2026-06-28 CAL011 - Jun 28, 05:55 UTCJun 28, 19:55 UTC14h 0m
2026-06-27 CAL012 TPE → JFK Jun 27, 12:15 UTCJun 28, 00:45 UTC12h 30m
2026-06-27 CAL782 - Jun 27, 00:10 UTCJun 27, 07:55 UTC7h 45m
2026-06-26 CAL011 - Jun 26, 21:45 UTCJun 26, 22:10 UTC25m
2026-06-26 CAL011 - Jun 26, 06:15 UTCJun 26, 20:20 UTC14h 5m
2026-06-25 CAL012 TPE → JFK Jun 25, 11:39 UTCJun 26, 00:05 UTC12h 25m
2026-06-25 CAL012 TPE → JFK Jun 25, 09:55 UTCJun 25, 10:09 UTC15m
2026-06-24 CAL782 TPE → TPE Jun 24, 23:40 UTCJun 25, 07:15 UTC7h 35m
2026-06-24 CAL011 JFK → TPE Jun 24, 05:34 UTCJun 24, 21:04 UTC15h 30m
2026-06-23 CAL012 TPE → JFK Jun 23, 12:09 UTCJun 24, 00:25 UTC12h 15m
2026-06-23 CAL012 TPE → JFK Jun 23, 10:10 UTCJun 23, 10:24 UTC15m
2026-06-22 CAL781 TPE → TPE Jun 22, 23:39 UTCJun 23, 06:59 UTC7h 20m
2026-06-22 CAL011 - Jun 22, 20:34 UTCJun 22, 21:00 UTC25m
2026-06-22 CAL011 - Jun 22, 05:40 UTCJun 22, 19:14 UTC13h 35m
2026-06-21 CAL012 TPE → JFK Jun 21, 11:59 UTCJun 22, 00:50 UTC12h 50m
2026-06-21 CAL012 TPE → JFK Jun 21, 10:09 UTCJun 21, 10:29 UTC20m
2026-06-20 CAL781 TPE → TPE Jun 20, 23:29 UTCJun 21, 07:09 UTC7h 40m

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-18006 page for operator, model, and routing details .

Mode-S 89901F frequently asked

What is Mode-S code 89901F?
89901F is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18006.
Where is Mode-S 89901F registered?
Mode-S code 89901F is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89901F 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 89901F, octal 42310037, decimal 9,015,327.
What flights does 89901F operate?
Mode-S 89901F has broadcast 20 distinct callsigns, including CAL031, CAL032, CAL024, CAL012, CAL023.