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 Jul 26, 20:30 UTC
Flights observed
249
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 20:30 UTC

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
CAL003 - 28 2026-07-26
CAL024 - 27 2026-07-12
CAL004 - 25 2026-07-25
CAL023 - 24 2026-07-13
CAL031 - 18 2026-07-21
CAL722 China Airlines 15 2026-07-25
CAL721 China Airlines 15 2026-07-25
CAL032 - 15 2026-07-20
CAL008 - 9 2026-06-12
CAL007 - 8 2026-06-13
CAL784 China Airlines 7 2026-07-24
CAL772 - 7 2026-06-30
CAL105 - 5 2026-07-07
CAL101 - 5 2026-07-14
CAL782 - 4 2026-06-14
CAL153 - 4 2026-06-17
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
2026-07-26 CAL003 - Jul 26, 08:15 UTCJul 26, 20:30 UTC12h 15m
2026-07-25 CAL004 - Jul 25, 16:45 UTCJul 26, 04:20 UTC11h 35m
2026-07-25 CAL722 KUL → TPE Jul 25, 08:10 UTCJul 25, 12:20 UTC4h 10m
2026-07-25 CAL721 TPE → KUL Jul 25, 01:35 UTCJul 25, 05:55 UTC4h 20m
2026-07-24 CAL784 SGN → TPE Jul 24, 06:10 UTCJul 24, 14:15 UTC8h 5m
2026-07-22 CAL501 TPE → PVG Jul 22, 01:05 UTCJul 22, 01:40 UTC35m
2026-07-21 CAL031 - Jul 21, 20:15 UTCJul 21, 20:35 UTC20m
2026-07-21 CAL031 - Jul 21, 09:00 UTCJul 21, 18:55 UTC9h 55m
2026-07-20 CAL032 TPE → YVR Jul 20, 16:20 UTCJul 21, 03:10 UTC10h 49m
2026-07-19 CAL031 YVR → TPE Jul 19, 09:05 UTCJul 19, 20:20 UTC11h 15m
2026-07-18 CAL032 - Jul 18, 17:55 UTCJul 19, 02:50 UTC8h 55m
2026-07-18 CAL722 - Jul 18, 07:55 UTCJul 18, 12:15 UTC4h 20m
2026-07-18 CAL721 TPE → KUL Jul 18, 01:30 UTCJul 18, 05:30 UTC4h 1m
2026-07-17 CAL003 - Jul 17, 20:10 UTCJul 17, 20:35 UTC25m
2026-07-17 CAL003 - Jul 17, 08:35 UTCJul 17, 19:05 UTC10h 30m
2026-07-16 CAL004 - Jul 16, 18:34 UTCJul 17, 04:54 UTC10h 20m
2026-07-16 CAL004 - Jul 16, 17:05 UTCJul 16, 17:14 UTC10m
2026-07-15 CAL003 SFO → TPE Jul 15, 08:20 UTCJul 15, 20:20 UTC12h 0m
2026-07-14 CAL004 TPE → SFO Jul 14, 16:30 UTCJul 15, 04:10 UTC11h 39m
2026-07-14 CAL101 NRT → TPE Jul 14, 06:20 UTCJul 14, 09:05 UTC2h 45m
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

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 Jul 26, 20:30 UTC.
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 CAL003, CAL024, CAL004, CAL023, CAL031.