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 1h ago
Flights observed
339
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

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
CAL5265 - 19 2026-07-09
CAL5234 - 17 2026-07-06
CAL6842 - 16 2026-06-30
CAL5233 - 16 2026-07-06
CAL5705 - 14 2026-07-04
CAL6881 - 10 2026-07-14
CAL6596 - 10 2026-07-13
CAL5706 - 10 2026-07-04
CAL5852 - 8 2026-06-14
CAL6887 - 7 2026-07-02
CAL6872 - 7 2026-07-10
CAL5997 - 7 2026-06-30
CAL5928 - 7 2026-07-07
CAL5851 China Airlines 7 2026-06-14
CAL5240 China Airlines 7 2026-05-31
CAL5239 China Airlines 7 2026-06-01
CAL6882 - 6 2026-07-14
CAL6841 - 6 2026-06-29
CAL5927 - 6 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAL6882 - Jul 14, 13:15 UTCJul 14, 13:40 UTC25m
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
2026-07-12 CAL5834 HKG → TPE Jul 12, 12:25 UTCJul 12, 14:01 UTC1h 35m
2026-07-12 CAL5833 - Jul 12, 08:35 UTCJul 12, 09:55 UTC1h 20m
2026-07-11 CAL6652 - Jul 11, 17:45 UTCJul 11, 18:30 UTC45m
2026-07-10 CAL6651 - Jul 10, 16:05 UTCJul 10, 16:35 UTC30m
2026-07-10 CAL6651 TPE → BKK Jul 10, 10:35 UTCJul 10, 13:45 UTC3h 10m
2026-07-10 CAL6872 - Jul 10, 04:30 UTCJul 10, 05:15 UTC45m
2026-07-10 CAL6872 - Jul 10, 01:10 UTCJul 10, 01:20 UTC10m
2026-07-09 CAL6871 - Jul 9, 16:55 UTCJul 9, 20:40 UTC3h 45m
2026-07-09 CAL5265 - Jul 9, 03:10 UTCJul 9, 12:05 UTC8h 55m
2026-07-08 CAL5265 DFW → ANC Jul 8, 20:00 UTCJul 9, 02:00 UTC6h 0m
2026-07-08 CAL5266 ANC → DFW Jul 8, 11:30 UTCJul 8, 16:55 UTC5h 25m
2026-07-08 CAL5266 - Jul 8, 03:10 UTCJul 8, 10:20 UTC7h 10m
2026-07-08 CAL5266 - Jul 8, 01:40 UTCJul 8, 01:55 UTC15m
2026-07-07 CAL5928 - Jul 7, 21:05 UTCJul 7, 22:30 UTC1h 25m
2026-07-07 CAL5927 - Jul 7, 15:45 UTCJul 7, 17:05 UTC1h 20m
2026-07-06 CAL5233 ANC → TPE Jul 6, 23:45 UTCJul 7, 08:50 UTC9h 5m
2026-07-06 CAL5233 - Jul 6, 16:25 UTCJul 6, 22:05 UTC5h 40m
2026-07-06 CAL5234 - Jul 6, 08:50 UTCJul 6, 14:05 UTC5h 15m
2026-07-05 CAL5234 - Jul 5, 19:20 UTCJul 6, 02:20 UTC7h 0m
2026-07-05 CAL5234 - Jul 5, 17:45 UTCJul 5, 18:00 UTC15m
2026-07-05 CAL5874 - Jul 5, 11:15 UTCJul 5, 12:35 UTC1h 20m
2026-07-05 CAL5874 - Jul 5, 08:15 UTCJul 5, 08:25 UTC10m
2026-07-05 CAL5873 - Jul 5, 04:35 UTCJul 5, 05:25 UTC50m
2026-07-05 CAL5873 - Jul 5, 01:55 UTCJul 5, 02:10 UTC15m
2026-07-04 CAL5873 - Jul 4, 22:35 UTCJul 4, 23:25 UTC50m
2026-07-04 CAL5705 - Jul 4, 15:05 UTCJul 4, 15:35 UTC30m
2026-07-04 CAL5705 - Jul 4, 12:25 UTCJul 4, 13:45 UTC1h 20m
2026-07-04 CAL5706 - Jul 4, 08:05 UTCJul 4, 09:20 UTC1h 15m
2026-07-04 CAL5706 - Jul 4, 06:20 UTCJul 4, 06:35 UTC15m
2026-07-03 CAL5998 - Jul 3, 17:35 UTCJul 4, 02:00 UTC8h 25m
2026-07-03 CAL6852 - Jul 3, 12:45 UTCJul 3, 14:00 UTC1h 15m
2026-07-03 CAL6851 TPE → PEN Jul 3, 02:45 UTCJul 3, 06:35 UTC3h 50m
2026-07-02 CAL6888 - Jul 2, 14:55 UTCJul 2, 17:15 UTC2h 20m
2026-07-02 CAL6887 - Jul 2, 09:20 UTCJul 2, 11:45 UTC2h 25m
2026-07-02 CAL6884 - Jul 2, 03:10 UTCJul 2, 06:30 UTC3h 20m
2026-07-01 CAL6884 - Jul 1, 23:55 UTCJul 2, 00:10 UTC15m
2026-07-01 CAL6884 - Jul 1, 22:15 UTCJul 1, 22:40 UTC25m
2026-07-01 CAL6883 - Jul 1, 16:05 UTCJul 1, 19:50 UTC3h 45m
2026-07-01 CAL5705 - Jul 1, 09:50 UTCJul 1, 12:55 UTC3h 5m
2026-07-01 CAL5706 - Jul 1, 05:00 UTCJul 1, 07:45 UTC2h 45m

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 1h ago.
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, CAL5265, CAL5234, CAL6842, CAL5233.