Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8990BA

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58201 · AIRBUS A-321neo

Hex
8990BA
Octal
42310272
Decimal
9,015,482
Country
TW
Tail
B-58201
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
308
Distinct callsigns
20
Country
TW
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 8990BA.

Country allocation

The ICAO 24-bit address 8990BA 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
SJX332 - 14 2026-07-01
SJX726 - 13 2026-07-09
SJX331 - 13 2026-07-02
SJX307 - 13 2026-07-14
SJX315 - 11 2026-06-27
SJX306 - 11 2026-07-14
SJX303 - 11 2026-06-30
SJX301 - 10 2026-07-02
SJX314 - 9 2026-06-27
SJX313 - 9 2026-07-13
SJX312 - 9 2026-07-13
SJX300 - 9 2026-07-02
SJX725 - 8 2026-07-09
SJX752 STARLUX Airlines 7 2026-05-21
SJX751 STARLUX Airlines 7 2026-05-21
SJX302 STARLUX Airlines 7 2026-06-08
SJX835 STARLUX Airlines 6 2026-06-02
SJX704 - 6 2026-07-05
SJX233 STARLUX Airlines 6 2026-05-29
SJX1841 STARLUX Airlines 6 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SJX307 - Jul 14, 04:45 UTCJul 14, 07:00 UTC2h 15m
2026-07-14 SJX306 - Jul 14, 00:55 UTCJul 14, 03:35 UTC2h 40m
2026-07-13 SJX313 - Jul 13, 11:20 UTCJul 13, 12:30 UTC1h 10m
2026-07-13 SJX312 - Jul 13, 08:40 UTCJul 13, 09:55 UTC1h 15m
2026-07-13 SJX307 UKB → RMQ Jul 13, 04:45 UTCJul 13, 07:25 UTC2h 40m
2026-07-13 SJX306 RMQ → UKB Jul 13, 00:55 UTCJul 13, 03:30 UTC2h 35m
2026-07-12 SJX317 - Jul 12, 11:50 UTCJul 12, 12:20 UTC30m
2026-07-12 SJX316 - Jul 12, 07:20 UTCJul 12, 07:50 UTC30m
2026-07-12 SJX311 - Jul 12, 05:05 UTCJul 12, 05:35 UTC30m
2026-07-12 SJX311 - Jul 12, 03:45 UTCJul 12, 04:05 UTC20m
2026-07-12 SJX310 - Jul 12, 02:10 UTCJul 12, 02:35 UTC25m
2026-07-12 SJX310 - Jul 12, 00:40 UTCJul 12, 01:10 UTC30m
2026-07-11 SJX2523 - Jul 11, 22:55 UTCJul 11, 23:05 UTC10m
2026-07-10 SJX901 PUS → TPE Jul 10, 06:35 UTCJul 10, 08:30 UTC1h 55m
2026-07-10 SJX900 - Jul 10, 04:20 UTCJul 10, 04:50 UTC30m
2026-07-10 SJX900 - Jul 10, 02:55 UTCJul 10, 03:20 UTC25m
2026-07-09 SJX726 - Jul 9, 09:50 UTCJul 9, 14:20 UTC4h 30m
2026-07-09 SJX725 - Jul 9, 03:35 UTCJul 9, 07:45 UTC4h 10m
2026-07-08 SJX726 - Jul 8, 09:35 UTCJul 8, 14:00 UTC4h 25m
2026-07-08 SJX725 - Jul 8, 03:35 UTCJul 8, 07:50 UTC4h 15m
2026-07-07 SJX784 TPE → TPE Jul 7, 09:00 UTCJul 7, 15:10 UTC6h 10m
2026-07-06 SJX726 - Jul 6, 09:25 UTCJul 6, 13:40 UTC4h 15m
2026-07-06 SJX725 - Jul 6, 03:35 UTCJul 6, 07:50 UTC4h 15m
2026-07-05 SJX704 TPE → TPE Jul 5, 08:00 UTCJul 5, 14:30 UTC6h 30m
2026-07-04 SJX861 - Jul 4, 11:45 UTCJul 4, 12:10 UTC25m
2026-07-04 SJX861 - Jul 4, 08:45 UTCJul 4, 10:30 UTC1h 45m
2026-07-04 SJX860 - Jul 4, 05:20 UTCJul 4, 07:15 UTC1h 55m
2026-07-04 SJX860 - Jul 4, 04:05 UTCJul 4, 04:20 UTC15m
2026-07-03 SJX901 PUS → TPE Jul 3, 06:15 UTCJul 3, 08:05 UTC1h 50m
2026-07-03 SJX900 - Jul 3, 04:20 UTCJul 3, 04:45 UTC25m
2026-07-03 SJX900 - Jul 3, 02:55 UTCJul 3, 03:20 UTC25m
2026-07-02 SJX206 - Jul 2, 13:10 UTCJul 2, 14:40 UTC1h 30m
2026-07-02 SJX331 - Jul 2, 09:25 UTCJul 2, 09:35 UTC10m
2026-07-02 SJX331 - Jul 2, 08:35 UTCJul 2, 08:50 UTC15m
2026-07-02 SJX301 - Jul 2, 06:15 UTCJul 2, 06:35 UTC20m
2026-07-02 SJX301 - Jul 2, 04:15 UTCJul 2, 04:45 UTC30m
2026-07-02 SJX300 - Jul 2, 00:55 UTCJul 2, 03:05 UTC2h 10m
2026-07-01 SJX332 - Jul 1, 11:20 UTCJul 1, 12:25 UTC1h 5m
2026-07-01 SJX331 - Jul 1, 08:40 UTCJul 1, 09:35 UTC55m
2026-07-01 SJX301 - Jul 1, 04:30 UTCJul 1, 06:50 UTC2h 20m
2026-07-01 SJX300 - Jul 1, 02:35 UTCJul 1, 03:05 UTC30m
2026-07-01 SJX300 - Jul 1, 00:55 UTCJul 1, 01:15 UTC20m
2026-06-30 SJX303 - Jun 30, 05:15 UTCJun 30, 08:55 UTC3h 40m
2026-06-29 SJX313 - Jun 29, 12:00 UTCJun 29, 12:29 UTC30m
2026-06-29 SJX312 - Jun 29, 08:44 UTCJun 29, 09:10 UTC25m
2026-06-29 SJX307 - Jun 29, 04:39 UTCJun 29, 07:09 UTC2h 30m
2026-06-29 SJX306 - Jun 29, 00:49 UTCJun 29, 03:10 UTC2h 20m
2026-06-28 SJX332 - Jun 28, 11:29 UTCJun 28, 12:44 UTC1h 15m
2026-06-28 SJX331 - Jun 28, 08:39 UTCJun 28, 08:59 UTC20m
2026-06-28 SJX301 - Jun 28, 06:44 UTCJun 28, 06:59 UTC15m

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-58201 page for operator, model, and routing details .

Mode-S 8990BA frequently asked

What is Mode-S code 8990BA?
8990BA is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58201.
Where is Mode-S 8990BA registered?
Mode-S code 8990BA is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990BA 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 8990BA, octal 42310272, decimal 9,015,482.
What flights does 8990BA operate?
Mode-S 8990BA has broadcast 20 distinct callsigns, including SJX332, SJX726, SJX331, SJX307, SJX315.