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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
Broadcasting now · callsign CAL074 · 35,000 ft
Flights observed
232
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 19:25 UTC

Current position

89901F is currently broadcasting. Map zoomed to live position.

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
CAL012 - 20 2026-07-18
CAL024 - 17 2026-07-08
CAL011 - 16 2026-07-19
CAL772 China Airlines 13 2026-07-26
CAL023 - 12 2026-07-09
CAL782 - 10 2026-07-17
CAL004 - 9 2026-07-20
CAL003 - 8 2026-07-21
CAL722 - 7 2026-07-03
CAL101 China Airlines 7 2026-07-24
CAL721 - 6 2026-07-03
CAL100 China Airlines 6 2026-07-24
CAL771 - 5 2026-07-05
CAL157 China Airlines 5 2026-06-04
CAL1806 China Airlines 4 2026-06-12
CAL156 China Airlines 4 2026-06-04
CAL784 China Airlines 3 2026-07-22
CAL783 - 3 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL008 - Jul 26, 16:30 UTCJul 26, 19:25 UTC2h 55m
2026-07-26 CAL772 DPS → TPE Jul 26, 01:20 UTCJul 26, 12:40 UTC11h 21m
2026-07-25 CAL504 PVG → TPE Jul 25, 13:50 UTCJul 25, 14:10 UTC20m
2026-07-25 CAL503 TPE → PVG Jul 25, 08:50 UTCJul 25, 09:10 UTC20m
2026-07-24 CAL101 NRT → TPE Jul 24, 08:40 UTCJul 24, 09:00 UTC20m
2026-07-24 CAL101 NRT → TPE Jul 24, 06:10 UTCJul 24, 07:20 UTC1h 10m
2026-07-24 CAL100 TPE → NRT Jul 24, 02:50 UTCJul 24, 04:15 UTC1h 25m
2026-07-24 CAL100 TPE → NRT Jul 24, 01:25 UTCJul 24, 01:35 UTC10m
2026-07-23 CAL173 KIX → TPE Jul 23, 12:30 UTCJul 23, 12:55 UTC25m
2026-07-23 CAL173 KIX → TPE Jul 23, 10:40 UTCJul 23, 11:15 UTC35m
2026-07-23 CAL172 TPE → KIX Jul 23, 06:40 UTCJul 23, 08:50 UTC2h 10m
2026-07-22 CAL784 SGN → TPE Jul 22, 13:30 UTCJul 22, 14:50 UTC1h 20m
2026-07-21 CAL003 - Jul 21, 20:25 UTCJul 21, 20:40 UTC15m
2026-07-21 CAL003 - Jul 21, 08:30 UTCJul 21, 19:05 UTC10h 35m
2026-07-20 CAL004 TPE → SFO Jul 20, 16:00 UTCJul 21, 03:40 UTC11h 39m
2026-07-20 CAL772 DPS → TPE Jul 20, 02:05 UTCJul 20, 13:35 UTC11h 30m
2026-07-19 CAL011 - Jul 19, 06:00 UTCJul 19, 21:40 UTC15h 40m
2026-07-18 CAL012 - Jul 18, 11:45 UTCJul 19, 01:30 UTC13h 45m
2026-07-18 CAL012 - Jul 18, 09:55 UTCJul 18, 10:10 UTC15m
2026-07-17 CAL782 - Jul 17, 23:45 UTCJul 18, 07:30 UTC7h 46m
2026-07-17 CAL011 JFK → TPE Jul 17, 05:50 UTCJul 17, 20:50 UTC15h 0m
2026-07-16 CAL012 - Jul 16, 12:00 UTCJul 17, 00:30 UTC12h 30m
2026-07-16 CAL012 - Jul 16, 10:15 UTCJul 16, 10:20 UTC5m
2026-07-15 CAL011 - Jul 15, 20:30 UTCJul 15, 20:55 UTC25m
2026-07-15 CAL011 - Jul 15, 05:40 UTCJul 15, 19:20 UTC13h 40m
2026-07-14 CAL012 - Jul 14, 11:50 UTCJul 15, 00:25 UTC12h 34m
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

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?
Yes. Mode-S 89901F is currently airborne.
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, CAL012, CAL024, CAL011.