Apparatus

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sensors Mode-S transponder

89911B

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18722 · BOEING 747-400

Hex
89911B
Octal
42310433
Decimal
9,015,579
Country
TW
Tail
B-18722
Type
B744
No current signal · last broadcast Jul 26, 16:30 UTC
Flights observed
379
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 16:30 UTC

Last known position

Most recent position reported by Mode-S 89911B.

Country allocation

The ICAO 24-bit address 89911B 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
CAL5266 - 23 2026-07-08
CAL5234 China Airlines 20 2026-07-25
CAL5265 - 19 2026-07-09
CAL5233 China Airlines 18 2026-07-26
CAL6842 - 16 2026-06-30
CAL5705 - 15 2026-07-22
CAL5706 - 11 2026-07-22
CAL6881 - 10 2026-07-14
CAL6596 - 10 2026-07-13
CAL5239 China Airlines 10 2026-07-20
CAL6872 - 9 2026-07-18
CAL5240 China Airlines 9 2026-07-19
CAL5852 - 8 2026-06-14
CAL6887 - 7 2026-07-02
CAL6876 China Airlines 7 2026-07-24
CAL5997 - 7 2026-06-30
CAL5928 - 7 2026-07-07
CAL5851 China Airlines 7 2026-06-14
CAL6882 - 6 2026-07-14
CAL6875 China Airlines 6 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL5233 ANC → TPE Jul 26, 06:50 UTCJul 26, 16:10 UTC9h 20m
2026-07-25 CAL5233 ANC → TPE Jul 25, 23:40 UTCJul 26, 05:30 UTC5h 50m
2026-07-25 CAL5234 TPE → ANC Jul 25, 14:45 UTCJul 25, 19:55 UTC5h 10m
2026-07-25 CAL5234 TPE → ANC Jul 25, 06:40 UTCJul 25, 13:30 UTC6h 50m
2026-07-25 CAL5234 TPE → ANC Jul 25, 05:10 UTCJul 25, 05:25 UTC15m
2026-07-24 CAL5992 TPE → TPE Jul 24, 20:55 UTCJul 25, 02:10 UTC5h 15m
2026-07-24 CAL6876 SIN → TPE Jul 24, 16:10 UTCJul 24, 17:25 UTC1h 15m
2026-07-24 CAL6876 SIN → TPE Jul 24, 15:15 UTCJul 24, 15:25 UTC10m
2026-07-24 CAL6876 SIN → TPE Jul 24, 08:55 UTCJul 24, 09:20 UTC25m
2026-07-24 CAL6875 TPE → SIN Jul 24, 02:25 UTCJul 24, 06:25 UTC4h 0m
2026-07-23 CAL5896 CAN → TPE Jul 23, 20:05 UTCJul 23, 21:25 UTC1h 20m
2026-07-23 CAL5895 TPE → CAN Jul 23, 15:20 UTCJul 23, 16:50 UTC1h 30m
2026-07-22 CAL5705 - Jul 22, 12:10 UTCJul 22, 12:30 UTC20m
2026-07-22 CAL5706 - Jul 22, 04:40 UTCJul 22, 11:40 UTC7h 0m
2026-07-21 CAL5894 - Jul 21, 20:40 UTCJul 21, 22:10 UTC1h 30m
2026-07-21 CAL5893 - Jul 21, 16:15 UTCJul 21, 17:00 UTC45m
2026-07-21 CAL5838 HKG → TPE Jul 21, 11:55 UTCJul 21, 13:25 UTC1h 30m
2026-07-21 CAL5837 TPE → HKG Jul 21, 07:40 UTCJul 21, 09:00 UTC1h 20m
2026-07-20 CAL5828 HKG → TPE Jul 20, 23:25 UTCJul 21, 00:50 UTC1h 24m
2026-07-20 CAL5827 TPE → TPE Jul 20, 19:15 UTCJul 20, 20:35 UTC1h 20m
2026-07-20 CAL5239 ORD → ANC Jul 20, 16:00 UTCJul 20, 16:30 UTC30m
2026-07-20 CAL5239 ORD → ANC Jul 20, 07:30 UTCJul 20, 15:05 UTC7h 35m
2026-07-20 CAL5239 ORD → ANC Jul 20, 00:15 UTCJul 20, 06:00 UTC5h 45m
2026-07-19 CAL5240 TPE → ANC Jul 19, 15:50 UTCJul 19, 21:10 UTC5h 20m
2026-07-19 CAL5240 TPE → ANC Jul 19, 06:00 UTCJul 19, 14:30 UTC8h 30m
2026-07-18 CAL6872 - Jul 18, 18:10 UTCJul 18, 19:20 UTC1h 10m
2026-07-18 CAL6872 - Jul 18, 15:15 UTCJul 18, 15:25 UTC10m
2026-07-18 CAL6871 TPE → SIN Jul 18, 07:15 UTCJul 18, 11:30 UTC4h 15m
2026-07-18 CAL5898 - Jul 18, 03:40 UTCJul 18, 04:00 UTC20m
2026-07-17 CAL5897 - Jul 17, 18:29 UTCJul 17, 19:00 UTC30m
2026-07-17 CAL6844 HKG → TPE Jul 17, 13:35 UTCJul 17, 15:20 UTC1h 45m
2026-07-17 CAL6843 TPE → HKG Jul 17, 10:10 UTCJul 17, 11:35 UTC1h 25m
2026-07-17 CAL5640 - Jul 17, 00:35 UTCJul 17, 06:35 UTC6h 0m
2026-07-16 CAL5640 - Jul 16, 15:14 UTCJul 16, 22:19 UTC7h 5m
2026-07-16 CAL5637 DEL → LUX Jul 16, 02:40 UTCJul 16, 10:35 UTC7h 55m
2026-07-15 CAL5637 TPE → DEL Jul 15, 18:55 UTCJul 16, 00:25 UTC5h 30m
2026-07-15 CAL5884 - Jul 15, 08:35 UTCJul 15, 12:00 UTC3h 25m
2026-07-15 CAL5884 - Jul 15, 03:50 UTCJul 15, 05:55 UTC2h 5m
2026-07-15 CAL5883 - Jul 15, 00:40 UTCJul 15, 01:00 UTC20m
2026-07-14 CAL5883 - Jul 14, 21:10 UTCJul 14, 22:10 UTC1h 0m
2026-07-14 CAL6882 - Jul 14, 13:15 UTCJul 14, 17:35 UTC4h 20m
2026-07-14 CAL6881 - Jul 14, 10:10 UTCJul 14, 10:40 UTC30m
2026-07-14 CAL6881 - Jul 14, 07:35 UTCJul 14, 07:45 UTC10m
2026-07-14 CAL6881 - Jul 14, 03:50 UTCJul 14, 04:45 UTC55m
2026-07-13 CAL5896 - Jul 13, 22:45 UTCJul 14, 00:00 UTC1h 15m
2026-07-13 CAL5895 - Jul 13, 18:10 UTCJul 13, 19:20 UTC1h 10m
2026-07-13 CAL6596 - Jul 13, 14:35 UTCJul 13, 16:00 UTC1h 25m
2026-07-13 CAL6596 - Jul 13, 13:40 UTCJul 13, 13:50 UTC10m
2026-07-13 CAL6596 - Jul 13, 08:50 UTCJul 13, 10:05 UTC1h 15m
2026-07-13 CAL6595 - Jul 13, 02:10 UTCJul 13, 02:55 UTC45m

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-18722 page for operator, model, and routing details .

Mode-S 89911B frequently asked

What is Mode-S code 89911B?
89911B is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18722.
Where is Mode-S 89911B registered?
Mode-S code 89911B is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89911B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89911B, octal 42310433, decimal 9,015,579.
What flights does 89911B operate?
Mode-S 89911B has broadcast 20 distinct callsigns, including CAL5266, CAL5234, CAL5265, CAL5233, CAL6842.