Apparatus

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sensors Mode-S transponder

899020

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18007 · BOEING 777-300ER

Hex
899020
Octal
42310040
Decimal
9,015,328
Country
TW
Tail
B-18007
Type
B77W
No current signal · last broadcast 3h ago
Flights observed
229
Distinct callsigns
20
Country
TW
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 899020.

Country allocation

The ICAO 24-bit address 899020 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
CAL024 - 27 2026-07-12
CAL023 - 24 2026-07-13
CAL003 - 24 2026-07-08
CAL004 - 21 2026-07-07
CAL031 China Airlines 15 2026-07-06
CAL722 - 13 2026-07-09
CAL721 - 13 2026-07-09
CAL032 China Airlines 13 2026-07-05
CAL008 - 9 2026-06-12
CAL007 - 8 2026-06-13
CAL772 - 7 2026-06-30
CAL784 - 6 2026-07-05
CAL105 - 5 2026-07-07
CAL782 - 4 2026-06-14
CAL153 - 4 2026-06-17
CAL101 - 4 2026-07-03
CAL104 - 3 2026-07-07
CAL100 - 3 2026-07-14
CAL781 China Airlines 2 2026-05-09
CAL504 - 2 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CAL100 - Jul 14, 01:25 UTCJul 14, 04:15 UTC2h 50m
2026-07-13 CAL023 - Jul 13, 08:10 UTCJul 13, 20:50 UTC12h 40m
2026-07-12 CAL024 - Jul 12, 15:25 UTCJul 13, 01:55 UTC10h 30m
2026-07-12 CAL024 - Jul 12, 13:45 UTCJul 12, 14:10 UTC25m
2026-07-12 CAL131 - Jul 12, 10:20 UTCJul 12, 10:40 UTC20m
2026-07-12 CAL131 - Jul 12, 07:31 UTCJul 12, 09:25 UTC1h 55m
2026-07-12 CAL130 - Jul 12, 01:05 UTCJul 12, 04:40 UTC3h 35m
2026-07-11 CAL023 - Jul 11, 20:45 UTCJul 11, 21:10 UTC25m
2026-07-11 CAL023 - Jul 11, 08:10 UTCJul 11, 19:30 UTC11h 20m
2026-07-09 CAL024 - Jul 9, 15:40 UTCJul 10, 01:45 UTC10h 5m
2026-07-09 CAL024 - Jul 9, 13:55 UTCJul 9, 14:05 UTC10m
2026-07-09 CAL722 - Jul 9, 07:30 UTCJul 9, 11:45 UTC4h 15m
2026-07-09 CAL721 - Jul 9, 01:45 UTCJul 9, 05:45 UTC4h 0m
2026-07-08 CAL003 SFO → TPE Jul 8, 08:25 UTCJul 8, 20:55 UTC12h 30m
2026-07-07 CAL004 - Jul 7, 17:50 UTCJul 8, 03:35 UTC9h 45m
2026-07-07 CAL004 - Jul 7, 16:20 UTCJul 7, 16:35 UTC15m
2026-07-07 CAL105 - Jul 7, 11:45 UTCJul 7, 12:05 UTC20m
2026-07-07 CAL105 - Jul 7, 09:25 UTCJul 7, 10:35 UTC1h 10m
2026-07-07 CAL104 TPE → NRT Jul 7, 04:20 UTCJul 7, 07:20 UTC3h 0m
2026-07-06 CAL031 YVR → TPE Jul 6, 19:55 UTCJul 6, 20:20 UTC25m
2026-07-06 CAL031 YVR → TPE Jul 6, 09:20 UTCJul 6, 18:45 UTC9h 25m
2026-07-05 CAL032 TPE → YVR Jul 5, 17:50 UTCJul 6, 02:35 UTC8h 45m
2026-07-05 CAL032 TPE → YVR Jul 5, 16:20 UTCJul 5, 16:35 UTC15m
2026-07-05 CAL784 TPE → TPE Jul 5, 06:05 UTCJul 5, 14:00 UTC7h 55m
2026-07-04 CAL031 YVR → TPE Jul 4, 20:20 UTCJul 4, 20:35 UTC15m
2026-07-04 CAL031 YVR → TPE Jul 4, 09:05 UTCJul 4, 19:05 UTC10h 0m
2026-07-03 CAL032 TPE → YVR Jul 3, 19:40 UTCJul 4, 05:55 UTC10h 15m
2026-07-03 CAL101 - Jul 3, 08:30 UTCJul 3, 09:00 UTC30m
2026-07-03 CAL101 - Jul 3, 05:55 UTCJul 3, 07:15 UTC1h 20m
2026-07-03 CAL100 - Jul 3, 01:20 UTCJul 3, 04:00 UTC2h 40m
2026-07-02 CAL003 - Jul 2, 20:15 UTCJul 2, 20:35 UTC20m
2026-07-02 CAL003 - Jul 2, 08:20 UTCJul 2, 19:35 UTC11h 15m
2026-07-01 CAL004 TPE → SFO Jul 1, 16:00 UTCJul 2, 03:00 UTC11h 0m
2026-07-01 CAL504 - Jul 1, 08:50 UTCJul 1, 13:25 UTC4h 35m
2026-07-01 CAL502 - Jul 1, 01:10 UTCJul 1, 06:05 UTC4h 55m
2026-06-30 CAL772 - Jun 30, 01:50 UTCJun 30, 13:00 UTC11h 10m
2026-06-29 CAL031 YVR → TPE Jun 29, 09:14 UTCJun 29, 20:49 UTC11h 35m
2026-06-28 CAL032 TPE → YVR Jun 28, 17:34 UTCJun 29, 02:05 UTC8h 30m
2026-06-28 CAL032 TPE → YVR Jun 28, 16:05 UTCJun 28, 16:14 UTC10m
2026-06-28 CAL772 - Jun 28, 01:44 UTCJun 28, 13:00 UTC11h 15m
2026-06-27 CAL504 - Jun 27, 13:15 UTCJun 27, 14:00 UTC45m
2026-06-27 CAL503 - Jun 27, 08:55 UTCJun 27, 09:09 UTC15m
2026-06-26 CAL101 - Jun 26, 09:59 UTCJun 26, 10:25 UTC25m
2026-06-26 CAL101 - Jun 26, 07:20 UTCJun 26, 08:34 UTC1h 15m
2026-06-26 CAL100 - Jun 26, 01:34 UTCJun 26, 04:24 UTC2h 50m
2026-06-25 CAL173 - Jun 25, 12:40 UTCJun 25, 13:20 UTC40m
2026-06-25 CAL173 - Jun 25, 10:45 UTCJun 25, 11:19 UTC35m
2026-06-25 CAL172 TPE → KIX Jun 25, 06:35 UTCJun 25, 08:50 UTC2h 15m
2026-06-24 CAL031 YVR → TPE Jun 24, 20:05 UTCJun 24, 20:30 UTC25m
2026-06-24 CAL031 YVR → TPE Jun 24, 09:09 UTCJun 24, 18:50 UTC9h 40m

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-18007 page for operator, model, and routing details .

Mode-S 899020 frequently asked

What is Mode-S code 899020?
899020 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18007.
Where is Mode-S 899020 registered?
Mode-S code 899020 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899020 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899020, octal 42310040, decimal 9,015,328.
What flights does 899020 operate?
Mode-S 899020 has broadcast 20 distinct callsigns, including CAL024, CAL023, CAL003, CAL004, CAL031.