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
Broadcasting now · callsign SJX704 · 15,425 ft
Flights observed
371
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 14:55 UTC

Current position

8990BD is currently broadcasting. Map zoomed to live position.

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 STARLUX Airlines 16 2026-07-23
SJX902 - 15 2026-07-17
SJX903 - 14 2026-07-17
SJX233 - 14 2026-06-30
SJX761 STARLUX Airlines 13 2026-07-03
SJX726 STARLUX Airlines 12 2026-07-22
SJX900 - 11 2026-07-12
SJX315 STARLUX Airlines 11 2026-05-26
SJX861 STARLUX Airlines 10 2026-07-21
SJX860 STARLUX Airlines 10 2026-07-21
SJX834 STARLUX Airlines 10 2026-07-22
SJX718 STARLUX Airlines 10 2026-07-25
SJX307 STARLUX Airlines 10 2026-05-30
SJX762 - 9 2026-07-03
SJX704 STARLUX Airlines 9 2026-07-24
SJX314 STARLUX Airlines 9 2026-05-26
SJX792 STARLUX Airlines 8 2026-07-20
SJX791 - 8 2026-07-20
SJX786 STARLUX Airlines 7 2026-07-25
SJX785 STARLUX Airlines 7 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SJX236 HKG → TPE Jul 26, 13:20 UTCJul 26, 14:45 UTC1h 25m
2026-07-26 SJX235 TPE → HKG Jul 26, 10:35 UTCJul 26, 10:50 UTC15m
2026-07-26 SJX235 TPE → HKG Jul 26, 09:20 UTCJul 26, 10:05 UTC45m
2026-07-26 SJX716 HAN → TPE Jul 26, 04:30 UTCJul 26, 07:00 UTC2h 31m
2026-07-26 SJX715 TPE → HAN Jul 26, 00:20 UTCJul 26, 02:35 UTC2h 15m
2026-07-25 SJX718 HAN → TPE Jul 25, 12:45 UTCJul 25, 14:10 UTC1h 25m
2026-07-25 SJX718 HAN → TPE Jul 25, 11:40 UTCJul 25, 11:50 UTC10m
2026-07-25 SJX717 TPE → HAN Jul 25, 07:20 UTCJul 25, 08:20 UTC1h 0m
2026-07-25 SJX786 MNL → TPE Jul 25, 03:10 UTCJul 25, 05:00 UTC1h 50m
2026-07-24 SJX785 TPE → MNL Jul 24, 23:30 UTCJul 25, 01:15 UTC1h 45m
2026-07-24 SJX704 DAD → TPE Jul 24, 08:10 UTCJul 24, 15:30 UTC7h 20m
2026-07-24 SJX786 MNL → TPE Jul 24, 02:55 UTCJul 24, 04:35 UTC1h 40m
2026-07-23 SJX785 TPE → MNL Jul 23, 23:30 UTCJul 24, 01:25 UTC1h 55m
2026-07-23 SJX204 - Jul 23, 11:10 UTCJul 23, 12:30 UTC1h 20m
2026-07-23 SJX203 TPE → MFM Jul 23, 07:55 UTCJul 23, 09:05 UTC1h 10m
2026-07-23 SJX835 UKB → TPE Jul 23, 04:50 UTCJul 23, 05:10 UTC20m
2026-07-23 SJX835 UKB → TPE Jul 23, 02:50 UTCJul 23, 03:35 UTC45m
2026-07-22 SJX834 TPE → UKB Jul 22, 23:00 UTCJul 23, 01:20 UTC2h 20m
2026-07-22 SJX726 KUL → TPE Jul 22, 03:45 UTCJul 22, 14:05 UTC10h 20m
2026-07-21 SJX861 HKD → TPE Jul 21, 12:15 UTCJul 21, 12:30 UTC15m
2026-07-21 SJX861 HKD → TPE Jul 21, 09:05 UTCJul 21, 10:55 UTC1h 50m
2026-07-21 SJX860 TPE → HKD Jul 21, 06:05 UTCJul 21, 07:45 UTC1h 40m
2026-07-21 SJX860 TPE → HKD Jul 21, 04:35 UTCJul 21, 04:45 UTC10m
2026-07-20 SJX792 CRK → TPE Jul 20, 12:50 UTCJul 20, 14:25 UTC1h 35m
2026-07-20 SJX791 - Jul 20, 09:40 UTCJul 20, 11:25 UTC1h 45m
2026-07-20 SJX1901 PUS → TPE Jul 20, 06:20 UTCJul 20, 08:20 UTC2h 0m
2026-07-20 SJX1900 - Jul 20, 04:40 UTCJul 20, 05:00 UTC20m
2026-07-20 SJX1900 - Jul 20, 03:10 UTCJul 20, 03:35 UTC25m
2026-07-19 SJX236 HKG → TPE Jul 19, 12:55 UTCJul 19, 14:30 UTC1h 35m
2026-07-19 SJX235 TPE → HKG Jul 19, 09:35 UTCJul 19, 10:50 UTC1h 15m
2026-07-19 SJX716 - Jul 19, 06:45 UTCJul 19, 08:10 UTC1h 25m
2026-07-19 SJX716 - Jul 19, 05:55 UTCJul 19, 06:05 UTC10m
2026-07-19 SJX715 TPE → HAN Jul 19, 02:55 UTCJul 19, 03:05 UTC10m
2026-07-19 SJX715 TPE → HAN Jul 19, 00:45 UTCJul 19, 01:55 UTC1h 10m
2026-07-18 SJX718 - Jul 18, 12:30 UTCJul 18, 14:10 UTC1h 40m
2026-07-18 SJX718 - Jul 18, 11:35 UTCJul 18, 11:50 UTC15m
2026-07-18 SJX717 - Jul 18, 09:15 UTCJul 18, 09:25 UTC10m
2026-07-18 SJX717 - Jul 18, 07:20 UTCJul 18, 08:25 UTC1h 5m
2026-07-18 SJX786 - Jul 18, 03:00 UTCJul 18, 04:50 UTC1h 50m
2026-07-17 SJX785 - Jul 17, 23:30 UTCJul 18, 01:15 UTC1h 45m
2026-07-17 SJX903 PUS → TPE Jul 17, 10:20 UTCJul 17, 12:10 UTC1h 50m
2026-07-17 SJX902 - Jul 17, 08:45 UTCJul 17, 09:04 UTC20m
2026-07-17 SJX902 - Jul 17, 07:14 UTCJul 17, 07:35 UTC20m
2026-07-16 SJX726 - Jul 16, 13:10 UTCJul 16, 14:35 UTC1h 25m
2026-07-16 SJX726 - Jul 16, 09:50 UTCJul 16, 10:04 UTC15m
2026-07-16 SJX725 - Jul 16, 03:45 UTCJul 16, 07:50 UTC4h 5m
2026-07-15 SJX752 - Jul 15, 10:50 UTCJul 15, 14:15 UTC3h 25m
2026-07-15 SJX751 - Jul 15, 05:55 UTCJul 15, 09:10 UTC3h 15m
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

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?
Yes. Mode-S 8990BD is currently airborne.
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, SJX902, SJX903, SJX233, SJX761.