Apparatus

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sensors Mode-S transponder

8990BD

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58204 · AIRBUS A-321neo

Hex
8990BD
Octal
42310275
Decimal
9,015,485
Country
TW
Tail
B-58204
Type
A21N
No current signal · last broadcast 3h ago
Flights observed
323
Distinct callsigns
20
Country
TW
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 8990BD.

Country allocation

The ICAO 24-bit address 8990BD 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
SJX835 - 14 2026-07-07
SJX233 - 14 2026-06-30
SJX903 - 13 2026-07-10
SJX902 - 13 2026-07-10
SJX761 STARLUX Airlines 13 2026-07-03
SJX900 - 11 2026-07-12
SJX315 STARLUX Airlines 11 2026-05-26
SJX307 STARLUX Airlines 10 2026-05-30
SJX834 - 9 2026-07-06
SJX762 - 9 2026-07-03
SJX726 STARLUX Airlines 9 2026-06-11
SJX314 STARLUX Airlines 9 2026-05-26
SJX861 - 8 2026-07-06
SJX860 - 8 2026-07-06
SJX704 - 8 2026-06-22
SJX792 - 7 2026-07-12
SJX791 - 7 2026-07-12
SJX234 - 7 2026-06-30
SJX901 - 6 2026-07-12
SJX725 STARLUX Airlines 6 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SJX716 - Jul 14, 05:15 UTCJul 14, 07:35 UTC2h 20m
2026-07-14 SJX715 - Jul 14, 01:10 UTCJul 14, 02:20 UTC1h 10m
2026-07-13 SJX1901 PUS → TPE Jul 13, 06:10 UTCJul 13, 08:01 UTC1h 50m
2026-07-13 SJX1900 - Jul 13, 04:35 UTCJul 13, 04:55 UTC20m
2026-07-13 SJX1900 - Jul 13, 03:05 UTCJul 13, 03:30 UTC25m
2026-07-12 SJX792 - Jul 12, 13:15 UTCJul 12, 14:50 UTC1h 35m
2026-07-12 SJX791 - Jul 12, 09:50 UTCJul 12, 11:25 UTC1h 35m
2026-07-12 SJX901 PUS → TPE Jul 12, 06:10 UTCJul 12, 08:10 UTC2h 0m
2026-07-12 SJX900 - Jul 12, 04:35 UTCJul 12, 04:50 UTC15m
2026-07-12 SJX900 - Jul 12, 03:05 UTCJul 12, 03:30 UTC25m
2026-07-11 SJX3784 - Jul 11, 19:05 UTCJul 11, 21:20 UTC2h 15m
2026-07-10 SJX783 - Jul 10, 08:35 UTCJul 10, 10:25 UTC1h 50m
2026-07-10 SJX903 PUS → TPE Jul 10, 04:55 UTCJul 10, 07:00 UTC2h 5m
2026-07-10 SJX902 - Jul 10, 03:10 UTCJul 10, 03:30 UTC20m
2026-07-10 SJX902 - Jul 10, 01:40 UTCJul 10, 02:10 UTC30m
2026-07-09 SJX792 - Jul 9, 12:55 UTCJul 9, 14:50 UTC1h 55m
2026-07-09 SJX791 - Jul 9, 10:05 UTCJul 9, 11:40 UTC1h 35m
2026-07-09 SJX901 - Jul 9, 06:30 UTCJul 9, 08:30 UTC2h 0m
2026-07-09 SJX900 - Jul 9, 04:35 UTCJul 9, 04:55 UTC20m
2026-07-09 SJX900 - Jul 9, 03:10 UTCJul 9, 03:35 UTC25m
2026-07-08 SJX792 - Jul 8, 12:40 UTCJul 8, 14:20 UTC1h 40m
2026-07-08 SJX791 - Jul 8, 09:35 UTCJul 8, 11:05 UTC1h 30m
2026-07-08 SJX1901 PUS → TPE Jul 8, 06:00 UTCJul 8, 07:50 UTC1h 50m
2026-07-08 SJX1900 - Jul 8, 04:30 UTCJul 8, 04:50 UTC20m
2026-07-08 SJX1900 - Jul 8, 02:55 UTCJul 8, 03:25 UTC30m
2026-07-07 SJX903 PUS → TPE Jul 7, 10:20 UTCJul 7, 12:15 UTC1h 55m
2026-07-07 SJX902 - Jul 7, 08:45 UTCJul 7, 09:10 UTC25m
2026-07-07 SJX902 - Jul 7, 07:20 UTCJul 7, 07:50 UTC30m
2026-07-07 SJX835 - Jul 7, 04:40 UTCJul 7, 05:05 UTC25m
2026-07-07 SJX835 - Jul 7, 02:50 UTCJul 7, 03:30 UTC40m
2026-07-06 SJX834 TPE → UKB Jul 6, 23:00 UTCJul 7, 01:20 UTC2h 20m
2026-07-06 SJX861 - Jul 6, 08:55 UTCJul 6, 12:20 UTC3h 25m
2026-07-06 SJX860 - Jul 6, 04:05 UTCJul 6, 07:15 UTC3h 10m
2026-07-05 SJX903 PUS → TPE Jul 5, 10:05 UTCJul 5, 12:00 UTC1h 55m
2026-07-05 SJX903 - Jul 5, 08:35 UTCJul 5, 08:55 UTC20m
2026-07-05 SJX902 - Jul 5, 07:10 UTCJul 5, 07:35 UTC25m
2026-07-05 SJX835 - Jul 5, 05:00 UTCJul 5, 05:25 UTC25m
2026-07-05 SJX835 - Jul 5, 03:00 UTCJul 5, 03:45 UTC45m
2026-07-04 SJX834 TPE → UKB Jul 4, 23:05 UTCJul 5, 01:20 UTC2h 15m
2026-07-04 SJX206 - Jul 4, 13:40 UTCJul 4, 14:55 UTC1h 15m
2026-07-04 SJX205 - Jul 4, 09:55 UTCJul 4, 11:15 UTC1h 20m
2026-07-04 SJX891 - Jul 4, 07:20 UTCJul 4, 07:50 UTC30m
2026-07-04 SJX890 - Jul 4, 04:45 UTCJul 4, 05:10 UTC25m
2026-07-03 SJX762 - Jul 3, 07:40 UTCJul 3, 11:05 UTC3h 25m
2026-07-03 SJX761 TPE → CGK Jul 3, 03:50 UTCJul 3, 04:05 UTC15m
2026-07-02 SJX761 TPE → CGK Jul 2, 23:15 UTCJul 3, 02:25 UTC3h 10m
2026-07-02 SJX792 - Jul 2, 12:40 UTCJul 2, 14:25 UTC1h 45m
2026-07-02 SJX791 - Jul 2, 09:35 UTCJul 2, 11:10 UTC1h 35m
2026-07-02 SJX901 PUS → TPE Jul 2, 06:15 UTCJul 2, 08:00 UTC1h 45m
2026-07-02 SJX900 - Jul 2, 04:15 UTCJul 2, 04:40 UTC25m

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-58204 page for operator, model, and routing details .

Mode-S 8990BD frequently asked

What is Mode-S code 8990BD?
8990BD is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58204.
Where is Mode-S 8990BD registered?
Mode-S code 8990BD is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990BD 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 8990BD, octal 42310275, decimal 9,015,485.
What flights does 8990BD operate?
Mode-S 8990BD has broadcast 20 distinct callsigns, including SJX835, SJX233, SJX903, SJX902, SJX761.