Apparatus

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sensors Mode-S transponder

899105

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18719 · BOEING 747-400

Hex
899105
Octal
42310405
Decimal
9,015,557
Country
TW
Tail
B-18719
Type
B744
Broadcasting now · callsign CAL5258 · 31,000 ft
Flights observed
356
Distinct callsigns
20
Country
TW
Last broadcast
Jul 25, 22:25 UTC

Current position

899105 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 899105 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
CAL5265 China Airlines 16 2026-07-23
CAL5233 China Airlines 14 2026-07-21
CAL5266 China Airlines 13 2026-07-22
CAL5234 China Airlines 13 2026-07-20
CAL6881 - 12 2026-06-18
CAL5895 China Airlines 12 2026-07-25
CAL5640 - 11 2026-07-14
CAL5239 - 11 2026-06-29
CAL6843 China Airlines 10 2026-07-24
CAL6842 China Airlines 10 2026-05-26
CAL5927 China Airlines 10 2026-07-21
CAL5896 China Airlines 10 2026-07-25
CAL5637 - 10 2026-07-13
CAL6876 China Airlines 9 2026-07-17
CAL6844 China Airlines 8 2026-07-24
CAL5928 China Airlines 8 2026-07-21
CAL6872 - 7 2026-07-24
CAL6871 China Airlines 7 2026-07-23
CAL5705 - 7 2026-07-16
CAL6841 China Airlines 6 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CAL5896 CAN → TPE Jul 25, 20:50 UTCJul 25, 22:20 UTC1h 30m
2026-07-25 CAL5895 TPE → CAN Jul 25, 16:55 UTCJul 25, 18:05 UTC1h 10m
2026-07-24 CAL5897 TPE → PVG Jul 24, 16:05 UTCJul 24, 23:05 UTC7h 0m
2026-07-24 CAL6844 HKG → TPE Jul 24, 11:35 UTCJul 24, 13:25 UTC1h 50m
2026-07-24 CAL6843 TPE → HKG Jul 24, 07:30 UTCJul 24, 08:45 UTC1h 15m
2026-07-24 CAL6872 - Jul 24, 03:05 UTCJul 24, 04:10 UTC1h 5m
2026-07-23 CAL6871 TPE → SIN Jul 23, 17:35 UTCJul 23, 21:30 UTC3h 55m
2026-07-23 CAL5265 SFO → ANC Jul 23, 04:40 UTCJul 23, 14:00 UTC9h 20m
2026-07-22 CAL5265 SFO → ANC Jul 22, 20:55 UTCJul 23, 03:05 UTC6h 10m
2026-07-22 CAL5266 ANC → DFW Jul 22, 11:35 UTCJul 22, 17:10 UTC5h 35m
2026-07-22 CAL5266 ANC → DFW Jul 22, 02:40 UTCJul 22, 11:25 UTC8h 45m
2026-07-22 CAL5266 ANC → DFW Jul 22, 01:55 UTCJul 22, 02:10 UTC15m
2026-07-21 CAL5928 SZX → TPE Jul 21, 20:40 UTCJul 21, 22:00 UTC1h 20m
2026-07-21 CAL5927 TPE → SZX Jul 21, 15:45 UTCJul 21, 17:05 UTC1h 20m
2026-07-21 CAL5233 ANC → TPE Jul 21, 12:45 UTCJul 21, 13:00 UTC15m
2026-07-21 CAL5233 ANC → TPE Jul 21, 03:35 UTCJul 21, 12:10 UTC8h 35m
2026-07-20 CAL5233 ORD → ANC Jul 20, 20:00 UTCJul 21, 01:50 UTC5h 50m
2026-07-20 CAL5234 TPE → ANC Jul 20, 11:35 UTCJul 20, 17:00 UTC5h 25m
2026-07-20 CAL5234 TPE → ANC Jul 20, 01:45 UTCJul 20, 10:10 UTC8h 25m
2026-07-19 CAL5233 ANC → TPE Jul 19, 13:05 UTCJul 19, 22:00 UTC8h 55m
2026-07-19 CAL5233 - Jul 19, 05:55 UTCJul 19, 11:35 UTC5h 40m
2026-07-18 CAL5234 ANC → ORD Jul 18, 20:15 UTCJul 19, 01:30 UTC5h 15m
2026-07-18 CAL5234 - Jul 18, 10:30 UTCJul 18, 18:55 UTC8h 25m
2026-07-18 CAL5992 - Jul 18, 05:25 UTCJul 18, 06:20 UTC55m
2026-07-18 CAL5991 - Jul 18, 01:15 UTCJul 18, 02:00 UTC45m
2026-07-17 CAL6876 SIN → TPE Jul 17, 14:10 UTCJul 17, 16:04 UTC1h 55m
2026-07-17 CAL6876 SIN → TPE Jul 17, 13:15 UTCJul 17, 13:25 UTC10m
2026-07-17 CAL6876 SIN → TPE Jul 17, 07:50 UTCJul 17, 10:35 UTC2h 45m
2026-07-17 CAL6875 TPE → SIN Jul 17, 02:05 UTCJul 17, 06:00 UTC3h 55m
2026-07-16 CAL5928 - Jul 16, 20:29 UTCJul 16, 21:50 UTC1h 20m
2026-07-16 CAL5927 - Jul 16, 15:35 UTCJul 16, 16:49 UTC1h 15m
2026-07-16 CAL5705 - Jul 16, 12:14 UTCJul 16, 12:30 UTC15m
2026-07-16 CAL5705 - Jul 16, 09:50 UTCJul 16, 11:05 UTC1h 15m
2026-07-16 CAL5706 - Jul 16, 02:55 UTCJul 16, 05:50 UTC2h 55m
2026-07-15 CAL5928 - Jul 15, 21:35 UTCJul 15, 22:55 UTC1h 20m
2026-07-15 CAL5927 - Jul 15, 15:45 UTCJul 15, 17:05 UTC1h 20m
2026-07-15 CAL5838 HKG → TPE Jul 15, 07:05 UTCJul 15, 08:30 UTC1h 25m
2026-07-15 CAL5837 - Jul 15, 02:10 UTCJul 15, 03:30 UTC1h 20m
2026-07-14 CAL5928 - Jul 14, 21:05 UTCJul 14, 22:25 UTC1h 20m
2026-07-14 CAL5927 - Jul 14, 16:35 UTCJul 14, 17:50 UTC1h 15m
2026-07-14 CAL5640 DEL → TPE Jul 14, 01:00 UTCJul 14, 06:45 UTC5h 45m
2026-07-13 CAL5640 - Jul 13, 15:40 UTCJul 13, 22:45 UTC7h 5m
2026-07-13 CAL5637 DEL → LUX Jul 13, 03:10 UTCJul 13, 11:05 UTC7h 55m
2026-07-12 CAL5637 - Jul 12, 19:15 UTCJul 12, 23:50 UTC4h 35m
2026-07-12 CAL5896 - Jul 12, 14:20 UTCJul 12, 15:45 UTC1h 25m
2026-07-12 CAL5895 - Jul 12, 10:25 UTCJul 12, 11:40 UTC1h 15m
2026-07-11 CAL5836 HKG → TPE Jul 11, 15:40 UTCJul 11, 17:00 UTC1h 20m
2026-07-10 CAL5835 TPE → HKG Jul 10, 12:10 UTCJul 10, 13:25 UTC1h 15m
2026-07-09 CAL5928 - Jul 9, 22:25 UTCJul 9, 23:40 UTC1h 15m
2026-07-09 CAL5927 - Jul 9, 18:10 UTCJul 9, 19:25 UTC1h 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-18719 page for operator, model, and routing details .

Mode-S 899105 frequently asked

What is Mode-S code 899105?
899105 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18719.
Where is Mode-S 899105 registered?
Mode-S code 899105 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899105 broadcasting right now?
Yes. Mode-S 899105 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899105, octal 42310405, decimal 9,015,557.
What flights does 899105 operate?
Mode-S 899105 has broadcast 20 distinct callsigns, including CAL5265, CAL5233, CAL5266, CAL5234, CAL6881.