Apparatus

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sensors Mode-S transponder

8990CA

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58509 · AIRBUS A-350-900

Hex
8990CA
Octal
42310312
Decimal
9,015,498
Country
TW
Tail
B-58509
Type
A359
No current signal · last broadcast 2h ago
Flights observed
237
Distinct callsigns
20
Country
TW
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 8990CA.

Country allocation

The ICAO 24-bit address 8990CA 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
SJX010 - 24 2026-07-08
SJX009 - 21 2026-07-09
SJX002 - 18 2026-06-19
SJX001 - 16 2026-06-20
SJX823 - 13 2026-07-10
SJX742 - 13 2026-07-01
SJX741 - 12 2026-07-01
SJX031 - 11 2026-07-07
SJX851 - 10 2026-06-29
SJX822 - 10 2026-07-10
SJX032 STARLUX Airlines 10 2026-07-06
SJX850 - 8 2026-06-29
SJX871 - 6 2026-07-14
SJX870 - 6 2026-07-14
SJX026 STARLUX Airlines 6 2026-06-21
SJX025 - 6 2026-06-22
SJX012 - 6 2026-06-29
SJX011 - 5 2026-06-30
SJX772 - 4 2026-06-17
SJX771 - 4 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SJX871 - Jul 14, 07:45 UTCJul 14, 08:50 UTC1h 5m
2026-07-14 SJX870 - Jul 14, 04:25 UTCJul 14, 04:50 UTC25m
2026-07-11 SJX3206 - Jul 11, 23:05 UTCJul 12, 00:30 UTC1h 25m
2026-07-10 SJX205 - Jul 10, 13:10 UTCJul 10, 14:15 UTC1h 5m
2026-07-10 SJX823 - Jul 10, 11:20 UTCJul 10, 11:45 UTC25m
2026-07-10 SJX823 - Jul 10, 09:25 UTCJul 10, 10:05 UTC40m
2026-07-10 SJX822 TPE → KIX Jul 10, 05:30 UTCJul 10, 07:45 UTC2h 15m
2026-07-09 SJX009 - Jul 9, 19:45 UTCJul 9, 20:05 UTC20m
2026-07-09 SJX009 - Jul 9, 07:00 UTCJul 9, 18:30 UTC11h 30m
2026-07-08 SJX010 - Jul 8, 14:20 UTCJul 9, 00:40 UTC10h 20m
2026-07-08 SJX010 - Jul 8, 12:50 UTCJul 8, 13:10 UTC20m
2026-07-07 SJX031 - Jul 7, 19:40 UTCJul 7, 20:00 UTC20m
2026-07-07 SJX031 - Jul 7, 08:40 UTCJul 7, 18:30 UTC9h 50m
2026-07-06 SJX032 TPE → SEA Jul 6, 12:40 UTCJul 6, 23:10 UTC10h 30m
2026-07-06 SJX823 - Jul 6, 06:30 UTCJul 6, 08:45 UTC2h 15m
2026-07-06 SJX822 TPE → KIX Jul 6, 02:50 UTCJul 6, 05:00 UTC2h 10m
2026-07-05 SJX871 - Jul 5, 07:45 UTCJul 5, 08:45 UTC1h 0m
2026-07-05 SJX870 - Jul 5, 04:40 UTCJul 5, 05:55 UTC1h 15m
2026-07-04 SJX009 - Jul 4, 19:50 UTCJul 4, 20:05 UTC15m
2026-07-04 SJX009 - Jul 4, 07:05 UTCJul 4, 19:15 UTC12h 10m
2026-07-03 SJX010 - Jul 3, 14:05 UTCJul 4, 00:05 UTC10h 0m
2026-07-03 SJX010 - Jul 3, 12:40 UTCJul 3, 12:55 UTC15m
2026-07-03 SJX871 - Jul 3, 08:00 UTCJul 3, 08:30 UTC30m
2026-07-03 SJX870 - Jul 3, 05:10 UTCJul 3, 05:20 UTC10m
2026-07-03 SJX870 - Jul 3, 04:15 UTCJul 3, 04:35 UTC20m
2026-07-02 SJX031 SEA → TPE Jul 2, 08:25 UTCJul 2, 20:30 UTC12h 5m
2026-07-01 SJX032 TPE → SEA Jul 1, 14:15 UTCJul 1, 22:55 UTC8h 40m
2026-07-01 SJX032 TPE → SEA Jul 1, 12:45 UTCJul 1, 13:05 UTC20m
2026-07-01 SJX742 - Jul 1, 09:10 UTCJul 1, 09:40 UTC30m
2026-07-01 SJX742 - Jul 1, 06:30 UTCJul 1, 06:45 UTC15m
2026-07-01 SJX741 - Jul 1, 04:25 UTCJul 1, 04:35 UTC10m
2026-07-01 SJX741 - Jul 1, 01:35 UTCJul 1, 02:30 UTC55m
2026-06-30 SJX011 - Jun 30, 08:10 UTCJun 30, 20:50 UTC12h 40m
2026-06-29 SJX012 - Jun 29, 17:55 UTCJun 30, 03:10 UTC9h 16m
2026-06-29 SJX012 - Jun 29, 16:29 UTCJun 29, 16:44 UTC15m
2026-06-29 SJX851 - Jun 29, 07:55 UTCJun 29, 11:29 UTC3h 35m
2026-06-29 SJX850 - Jun 29, 04:09 UTCJun 29, 05:50 UTC1h 40m
2026-06-29 SJX850 - Jun 29, 02:39 UTCJun 29, 02:50 UTC10m
2026-06-28 SJX851 - Jun 28, 11:39 UTCJun 28, 11:59 UTC20m
2026-06-28 SJX851 - Jun 28, 08:09 UTCJun 28, 10:24 UTC2h 15m
2026-06-28 SJX850 TPE → CTS Jun 28, 02:29 UTCJun 28, 05:40 UTC3h 10m
2026-06-27 SJX031 - Jun 27, 20:14 UTCJun 27, 20:29 UTC15m
2026-06-27 SJX031 - Jun 27, 08:29 UTCJun 27, 18:45 UTC10h 15m
2026-06-26 SJX032 TPE → SEA Jun 26, 13:59 UTCJun 26, 22:44 UTC8h 45m
2026-06-26 SJX032 TPE → SEA Jun 26, 12:34 UTCJun 26, 12:55 UTC20m
2026-06-26 SJX742 - Jun 26, 06:29 UTCJun 26, 09:39 UTC3h 10m
2026-06-26 SJX741 - Jun 26, 01:39 UTCJun 26, 04:39 UTC3h 0m
2026-06-25 SJX009 - Jun 25, 06:20 UTCJun 25, 19:34 UTC13h 15m
2026-06-24 SJX010 - Jun 24, 12:34 UTCJun 24, 23:45 UTC11h 10m
2026-06-24 SJX871 TPE → TPE Jun 24, 05:15 UTCJun 24, 09:34 UTC4h 20m

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-58509 page for operator, model, and routing details .

Mode-S 8990CA frequently asked

What is Mode-S code 8990CA?
8990CA is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58509.
Where is Mode-S 8990CA registered?
Mode-S code 8990CA is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990CA 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 8990CA, octal 42310312, decimal 9,015,498.
What flights does 8990CA operate?
Mode-S 8990CA has broadcast 20 distinct callsigns, including SJX010, SJX009, SJX002, SJX001, SJX823.