Apparatus

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sensors Mode-S transponder

899106

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18720 · BOEING 747-400

Hex
899106
Octal
42310406
Decimal
9,015,558
Country
TW
Tail
B-18720
Type
B744
No current signal · last broadcast 2h ago
Flights observed
317
Distinct callsigns
20
Country
TW
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 899106.

Country allocation

The ICAO 24-bit address 899106 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
CAL5239 - 27 2026-07-06
CAL5240 - 25 2026-07-05
CAL5637 - 20 2026-06-18
CAL5640 China Airlines 18 2026-06-19
CAL6881 - 9 2026-07-09
CAL5896 - 9 2026-07-09
CAL5895 - 9 2026-07-09
CAL5265 - 9 2026-07-04
CAL5226 China Airlines 9 2026-06-11
CAL5927 - 8 2026-07-08
CAL5268 China Airlines 8 2026-06-21
CAL5266 - 8 2026-07-03
CAL6865 - 7 2026-06-27
CAL6843 - 7 2026-07-08
CAL5928 - 7 2026-07-08
CAL5267 China Airlines 7 2026-06-22
CAL5225 - 7 2026-06-12
CAL6875 China Airlines 6 2026-05-15
CAL6866 - 6 2026-06-27
CAL6888 China Airlines 5 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAL5233 - Jul 14, 12:40 UTCJul 14, 21:50 UTC9h 10m
2026-07-14 CAL5233 ORD → ANC Jul 14, 04:40 UTCJul 14, 10:40 UTC6h 0m
2026-07-13 CAL5234 ANC → ORD Jul 13, 19:35 UTCJul 14, 00:45 UTC5h 10m
2026-07-13 CAL5234 TPE → ANC Jul 13, 09:30 UTCJul 13, 18:05 UTC8h 35m
2026-07-13 CAL5874 - Jul 13, 04:15 UTCJul 13, 05:15 UTC1h 0m
2026-07-12 CAL5873 - Jul 12, 20:50 UTCJul 12, 21:25 UTC35m
2026-07-12 CAL5873 - Jul 12, 18:05 UTCJul 12, 18:30 UTC25m
2026-07-12 CAL5873 - Jul 12, 14:35 UTCJul 12, 15:20 UTC45m
2026-07-12 CAL5866 - Jul 12, 09:10 UTCJul 12, 10:40 UTC1h 30m
2026-07-12 CAL5866 - Jul 12, 08:20 UTCJul 12, 08:30 UTC10m
2026-07-12 CAL5866 - Jul 12, 00:55 UTCJul 12, 01:10 UTC15m
2026-07-11 CAL5865 - Jul 11, 18:20 UTCJul 11, 22:25 UTC4h 5m
2026-07-09 CAL5896 - Jul 9, 22:40 UTCJul 10, 00:00 UTC1h 20m
2026-07-09 CAL5895 - Jul 9, 18:35 UTCJul 9, 19:45 UTC1h 10m
2026-07-09 CAL6882 - Jul 9, 12:00 UTCJul 9, 16:15 UTC4h 15m
2026-07-09 CAL6881 - Jul 9, 08:30 UTCJul 9, 09:10 UTC40m
2026-07-09 CAL6881 - Jul 9, 05:00 UTCJul 9, 05:15 UTC15m
2026-07-09 CAL6881 - Jul 9, 01:25 UTCJul 9, 02:05 UTC40m
2026-07-08 CAL5928 - Jul 8, 20:50 UTCJul 8, 22:05 UTC1h 15m
2026-07-08 CAL5927 - Jul 8, 15:50 UTCJul 8, 17:05 UTC1h 15m
2026-07-08 CAL6844 HKG → TPE Jul 8, 12:10 UTCJul 8, 13:35 UTC1h 25m
2026-07-08 CAL6843 TPE → HKG Jul 8, 07:50 UTCJul 8, 09:25 UTC1h 35m
2026-07-06 CAL5897 TPE → TPE Jul 6, 18:10 UTCJul 7, 00:25 UTC6h 15m
2026-07-06 CAL5239 - Jul 6, 14:45 UTCJul 6, 15:20 UTC35m
2026-07-06 CAL5239 - Jul 6, 05:50 UTCJul 6, 13:35 UTC7h 45m
2026-07-05 CAL5239 ORD → ANC Jul 5, 22:10 UTCJul 6, 03:40 UTC5h 30m
2026-07-05 CAL5240 ANC → ORD Jul 5, 12:45 UTCJul 5, 17:55 UTC5h 10m
2026-07-05 CAL5240 TPE → ANC Jul 5, 02:25 UTCJul 5, 11:00 UTC8h 35m
2026-07-04 CAL5896 - Jul 4, 20:20 UTCJul 4, 21:50 UTC1h 30m
2026-07-04 CAL5895 - Jul 4, 15:25 UTCJul 4, 15:50 UTC25m
2026-07-04 CAL5265 - Jul 4, 12:45 UTCJul 4, 13:10 UTC25m
2026-07-04 CAL5265 - Jul 4, 04:05 UTCJul 4, 11:40 UTC7h 35m
2026-07-03 CAL5265 DFW → ANC Jul 3, 20:45 UTCJul 4, 02:35 UTC5h 50m
2026-07-03 CAL5266 ANC → DFW Jul 3, 10:25 UTCJul 3, 16:05 UTC5h 40m
2026-07-03 CAL5266 - Jul 3, 01:35 UTCJul 3, 08:25 UTC6h 50m
2026-07-03 CAL5266 - Jul 3, 00:10 UTCJul 3, 00:25 UTC15m
2026-07-02 CAL5896 - Jul 2, 19:30 UTCJul 2, 21:05 UTC1h 35m
2026-07-02 CAL5895 - Jul 2, 15:00 UTCJul 2, 15:20 UTC20m
2026-07-02 CAL5705 - Jul 2, 08:50 UTCJul 2, 11:50 UTC3h 0m
2026-07-02 CAL5706 - Jul 2, 02:55 UTCJul 2, 05:30 UTC2h 35m
2026-07-01 CAL5928 - Jul 1, 22:35 UTCJul 1, 23:15 UTC40m
2026-07-01 CAL5928 - Jul 1, 21:50 UTCJul 1, 22:00 UTC10m
2026-07-01 CAL5927 - Jul 1, 17:35 UTCJul 1, 17:55 UTC20m
2026-07-01 CAL5927 - Jul 1, 16:40 UTCJul 1, 17:00 UTC20m
2026-07-01 CAL6844 - Jul 1, 12:30 UTCJul 1, 14:05 UTC1h 35m
2026-07-01 CAL6843 - Jul 1, 09:15 UTCJul 1, 09:35 UTC20m
2026-07-01 CAL6843 - Jul 1, 08:15 UTCJul 1, 08:35 UTC20m
2026-06-30 CAL5233 ANC → TPE Jun 30, 01:30 UTCJun 30, 10:45 UTC9h 15m
2026-06-29 CAL5233 - Jun 29, 17:45 UTCJun 29, 23:19 UTC5h 35m
2026-06-29 CAL5234 - Jun 29, 08:09 UTCJun 29, 13:44 UTC5h 35m

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-18720 page for operator, model, and routing details .

Mode-S 899106 frequently asked

What is Mode-S code 899106?
899106 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18720.
Where is Mode-S 899106 registered?
Mode-S code 899106 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899106 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899106, octal 42310406, decimal 9,015,558.
What flights does 899106 operate?
Mode-S 899106 has broadcast 20 distinct callsigns, including CAL5239, CAL5240, CAL5637, CAL5640, CAL6881.