Apparatus

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sensors Mode-S transponder

899107

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18721 · BOEING 747-400

Hex
899107
Octal
42310407
Decimal
9,015,559
Country
TW
Tail
B-18721
Type
B744
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
170
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 899107.

Country allocation

The ICAO 24-bit address 899107 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
CAL5234 China Airlines 12 2026-05-13
CAL5233 China Airlines 12 2026-05-13
CAL5637 China Airlines 11 2026-05-16
CAL5640 China Airlines 10 2026-05-17
CAL5240 China Airlines 8 2026-04-18
CAL5869 China Airlines 7 2026-05-27
CAL5870 China Airlines 6 2026-05-27
CAL5266 China Airlines 6 2026-05-18
CAL6842 China Airlines 5 2026-05-14
CAL5265 China Airlines 5 2026-05-19
CAL6881 China Airlines 4 2026-05-21
CAL6876 China Airlines 4 2026-05-28
CAL6875 China Airlines 4 2026-05-27
CAL5928 China Airlines 4 2026-05-26
CAL5927 China Airlines 4 2026-05-26
CAL5866 China Airlines 4 2026-07-25
CAL5705 China Airlines 4 2026-05-23
CAL5239 China Airlines 4 2026-04-22
CAL5897 China Airlines 3 2026-05-22
CAL5873 China Airlines 3 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL6595 TPE → PEN Jul 26, 21:35 UTCJul 26, 21:45 UTC10m
2026-07-26 CAL5874 PEN → TPE Jul 26, 10:50 UTCJul 26, 12:05 UTC1h 15m
2026-07-26 CAL5873 SIN → PEN Jul 26, 04:30 UTCJul 26, 05:25 UTC55m
2026-07-26 CAL5873 SIN → PEN Jul 26, 01:30 UTCJul 26, 01:50 UTC20m
2026-07-25 CAL5873 SIN → PEN Jul 25, 22:05 UTCJul 25, 23:00 UTC55m
2026-07-25 CAL5866 KUL → TPE Jul 25, 14:10 UTCJul 25, 16:55 UTC2h 45m
2026-07-25 CAL5866 KUL → TPE Jul 25, 08:45 UTCJul 25, 11:30 UTC2h 45m
2026-07-25 CAL5865 TPE → KUL Jul 25, 02:55 UTCJul 25, 07:00 UTC4h 5m
2026-07-24 CAL5225 ORD → ANC Jul 24, 12:55 UTCJul 24, 22:40 UTC9h 45m
2026-07-24 CAL5225 ORD → ANC Jul 24, 05:20 UTCJul 24, 11:15 UTC5h 55m
2026-07-23 CAL5226 ANC → ORD Jul 23, 21:40 UTCJul 24, 02:45 UTC5h 5m
2026-07-23 CAL5226 ANC → ORD Jul 23, 13:00 UTCJul 23, 19:55 UTC6h 55m
2026-07-23 CAL5226 - Jul 23, 11:25 UTCJul 23, 11:35 UTC10m
2026-07-23 CAL6884 BKK → TPE Jul 23, 03:45 UTCJul 23, 07:05 UTC3h 20m
2026-07-22 CAL6884 BKK → TPE Jul 22, 23:25 UTCJul 23, 01:25 UTC2h 0m
2026-07-22 CAL6883 TPE → SIN Jul 22, 16:55 UTCJul 22, 20:40 UTC3h 45m
2026-05-28 CAL6876 SIN → TPE May 28, 06:55 UTCMay 28, 09:30 UTC2h 35m
2026-05-28 CAL6876 SIN → TPE May 28, 02:10 UTCMay 28, 04:55 UTC2h 45m
2026-05-27 CAL6875 TPE → SIN May 27, 19:40 UTCMay 27, 23:20 UTC3h 40m
2026-05-27 CAL5870 HAN → TPE May 27, 13:45 UTCMay 27, 16:05 UTC2h 20m
2026-05-27 CAL5870 HAN → TPE May 27, 10:40 UTCMay 27, 11:00 UTC20m
2026-05-27 CAL5870 HAN → TPE May 27, 07:10 UTCMay 27, 08:40 UTC1h 30m
2026-05-27 CAL5869 TPE → CGK May 27, 05:29 UTCMay 27, 05:45 UTC15m
2026-05-27 CAL5869 TPE → CGK May 27, 00:59 UTCMay 27, 03:54 UTC2h 55m
2026-05-26 CAL5928 SZX → TPE May 26, 20:45 UTCMay 26, 22:05 UTC1h 20m
2026-05-26 CAL5927 TPE → SZX May 26, 15:45 UTCMay 26, 16:59 UTC1h 15m
2026-05-26 CAL6852 TPE → TPE May 26, 01:20 UTCMay 26, 12:10 UTC10h 50m
2026-05-25 CAL5267 DFW → ANC May 25, 03:35 UTCMay 25, 12:40 UTC9h 5m
2026-05-24 CAL5267 DFW → ANC May 24, 20:25 UTCMay 25, 02:20 UTC5h 55m
2026-05-24 CAL5268 ANC → DFW May 24, 11:35 UTCMay 24, 17:10 UTC5h 35m
2026-05-24 CAL5268 ANC → DFW May 24, 01:40 UTCMay 24, 10:10 UTC8h 30m
2026-05-23 CAL5705 NRT → TPE May 23, 15:45 UTCMay 23, 16:05 UTC20m
2026-05-23 CAL5705 NRT → TPE May 23, 13:05 UTCMay 23, 14:20 UTC1h 15m
2026-05-23 CAL5706 TPE → NRT May 23, 06:40 UTCMay 23, 09:20 UTC2h 40m
2026-05-22 CAL5897 TPE → PVG May 22, 17:35 UTCMay 23, 00:15 UTC6h 40m
2026-05-22 CAL6852 - May 22, 03:35 UTCMay 22, 15:05 UTC11h 30m
2026-05-21 CAL5928 SZX → TPE May 21, 20:25 UTCMay 21, 21:50 UTC1h 25m
2026-05-21 CAL5927 TPE → SZX May 21, 15:40 UTCMay 21, 16:10 UTC30m
2026-05-21 CAL6882 KUL → TPE May 21, 08:50 UTCMay 21, 13:20 UTC4h 30m
2026-05-21 CAL6881 TPE → PEN May 21, 05:50 UTCMay 21, 06:30 UTC40m
2026-05-20 CAL6881 TPE → PEN May 20, 22:20 UTCMay 20, 23:10 UTC50m
2026-05-20 CAL5870 HAN → TPE May 20, 05:05 UTCMay 20, 14:00 UTC8h 55m
2026-05-20 CAL5869 TPE → CGK May 20, 02:50 UTCMay 20, 03:05 UTC15m
2026-05-19 CAL5869 TPE → CGK May 19, 22:25 UTCMay 20, 01:25 UTC3h 0m
2026-05-19 CAL5265 SFO → ANC May 19, 16:25 UTCMay 19, 16:50 UTC25m
2026-05-19 CAL5265 SFO → ANC May 19, 07:25 UTCMay 19, 15:05 UTC7h 40m
2026-05-18 CAL5265 SFO → ANC May 18, 23:45 UTCMay 19, 05:45 UTC6h 0m
2026-05-18 CAL5266 ANC → DFW May 18, 13:45 UTCMay 18, 19:20 UTC5h 34m
2026-05-18 CAL5266 ANC → DFW May 18, 04:55 UTCMay 18, 12:10 UTC7h 15m
2026-05-18 CAL5266 ANC → DFW May 18, 03:25 UTCMay 18, 03:35 UTC10m

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-18721 page for operator, model, and routing details .

Mode-S 899107 frequently asked

What is Mode-S code 899107?
899107 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18721.
Where is Mode-S 899107 registered?
Mode-S code 899107 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899107 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 899107, octal 42310407, decimal 9,015,559.
What flights does 899107 operate?
Mode-S 899107 has broadcast 20 distinct callsigns, including CAL5234, CAL5233, CAL5637, CAL5640, CAL5240.