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sensors Mode-S transponder

8991E5

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58502 · AIRBUS A-350-900

Hex
8991E5
Octal
42310745
Decimal
9,015,781
Country
TW
Tail
B-58502
Type
A359
No current signal · last broadcast Jul 26, 15:35 UTC
Flights observed
253
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 15:35 UTC

Last known position

Most recent position reported by Mode-S 8991E5.

Country allocation

The ICAO 24-bit address 8991E5 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
SJX031 STARLUX Airlines 25 2026-07-20
SJX032 STARLUX Airlines 21 2026-07-26
SJX011 - 19 2026-06-26
SJX012 - 18 2026-07-09
SJX002 - 17 2026-07-23
SJX850 - 16 2026-07-17
SJX851 - 13 2026-07-17
SJX001 - 13 2026-07-24
SJX871 STARLUX Airlines 12 2026-07-26
SJX742 STARLUX Airlines 11 2026-07-19
SJX741 - 11 2026-07-19
SJX823 - 10 2026-07-13
SJX009 - 10 2026-07-14
SJX870 STARLUX Airlines 9 2026-07-26
SJX822 - 9 2026-07-13
SJX010 - 9 2026-07-13
SJX771 STARLUX Airlines 8 2026-07-25
SJX772 STARLUX Airlines 6 2026-07-25
SJX802 - 5 2026-07-02
SJX803 - 4 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SJX032 TPE → SEA Jul 26, 12:30 UTCJul 26, 15:35 UTC3h 5m
2026-07-26 SJX871 OKA → TPE Jul 26, 07:20 UTCJul 26, 08:25 UTC1h 5m
2026-07-26 SJX870 TPE → OKA Jul 26, 04:15 UTCJul 26, 04:35 UTC20m
2026-07-25 SJX772 SIN → TPE Jul 25, 06:50 UTCJul 25, 11:05 UTC4h 15m
2026-07-25 SJX771 TPE → SIN Jul 25, 00:55 UTCJul 25, 05:00 UTC4h 5m
2026-07-24 SJX001 - Jul 24, 20:10 UTCJul 24, 20:30 UTC20m
2026-07-24 SJX001 - Jul 24, 08:05 UTCJul 24, 18:50 UTC10h 45m
2026-07-23 SJX002 - Jul 23, 17:35 UTCJul 24, 05:05 UTC11h 30m
2026-07-23 SJX002 - Jul 23, 16:55 UTCJul 23, 17:05 UTC10m
2026-07-22 SJX001 - Jul 22, 20:05 UTCJul 22, 20:15 UTC10m
2026-07-22 SJX001 - Jul 22, 19:10 UTCJul 22, 19:25 UTC15m
2026-07-21 SJX002 - Jul 21, 18:20 UTCJul 22, 05:00 UTC10h 40m
2026-07-21 SJX002 - Jul 21, 16:50 UTCJul 21, 17:05 UTC15m
2026-07-20 SJX031 SEA → TPE Jul 20, 19:30 UTCJul 20, 19:50 UTC20m
2026-07-20 SJX031 SEA → TPE Jul 20, 08:30 UTCJul 20, 18:25 UTC9h 55m
2026-07-19 SJX032 TPE → SEA Jul 19, 12:50 UTCJul 19, 23:45 UTC10h 55m
2026-07-19 SJX742 BKK → TPE Jul 19, 08:45 UTCJul 19, 10:05 UTC1h 20m
2026-07-19 SJX742 BKK → TPE Jul 19, 06:30 UTCJul 19, 06:45 UTC15m
2026-07-19 SJX741 - Jul 19, 04:05 UTCJul 19, 04:25 UTC20m
2026-07-19 SJX741 - Jul 19, 01:20 UTCJul 19, 02:15 UTC55m
2026-07-18 SJX001 - Jul 18, 20:10 UTCJul 18, 20:20 UTC10m
2026-07-18 SJX001 - Jul 18, 08:05 UTCJul 18, 18:50 UTC10h 45m
2026-07-17 SJX002 - Jul 17, 18:25 UTCJul 18, 05:05 UTC10h 41m
2026-07-17 SJX002 - Jul 17, 16:49 UTCJul 17, 17:09 UTC20m
2026-07-17 SJX851 - Jul 17, 10:35 UTCJul 17, 11:00 UTC25m
2026-07-17 SJX851 - Jul 17, 07:44 UTCJul 17, 09:45 UTC2h 0m
2026-07-17 SJX850 - Jul 17, 02:30 UTCJul 17, 05:55 UTC3h 25m
2026-07-16 SJX851 - Jul 16, 10:45 UTCJul 16, 10:55 UTC10m
2026-07-16 SJX851 - Jul 16, 07:35 UTCJul 16, 09:25 UTC1h 50m
2026-07-16 SJX850 - Jul 16, 02:35 UTCJul 16, 05:55 UTC3h 20m
2026-07-15 SJX871 - Jul 15, 08:00 UTCJul 15, 08:20 UTC20m
2026-07-15 SJX870 - Jul 15, 05:15 UTCJul 15, 05:25 UTC10m
2026-07-15 SJX870 - Jul 15, 04:20 UTCJul 15, 04:30 UTC10m
2026-07-14 SJX009 - Jul 14, 07:10 UTCJul 14, 19:45 UTC12h 35m
2026-07-13 SJX010 - Jul 13, 14:20 UTCJul 14, 00:55 UTC10h 35m
2026-07-13 SJX010 - Jul 13, 12:30 UTCJul 13, 12:50 UTC20m
2026-07-13 SJX823 KIX → TPE Jul 13, 06:25 UTCJul 13, 08:35 UTC2h 10m
2026-07-13 SJX822 TPE → KIX Jul 13, 02:30 UTCJul 13, 04:50 UTC2h 20m
2026-07-12 SJX871 - Jul 12, 07:15 UTCJul 12, 08:35 UTC1h 20m
2026-07-12 SJX870 - Jul 12, 04:10 UTCJul 12, 05:15 UTC1h 5m
2026-07-11 SJX3011 - Jul 11, 18:10 UTCJul 11, 18:35 UTC25m
2026-07-11 SJX3011 - Jul 11, 06:20 UTCJul 11, 17:00 UTC10h 40m
2026-07-09 SJX012 - Jul 9, 17:00 UTCJul 10, 04:15 UTC11h 15m
2026-07-09 SJX772 - Jul 9, 06:45 UTCJul 9, 11:00 UTC4h 15m
2026-07-09 SJX771 - Jul 9, 04:35 UTCJul 9, 05:00 UTC25m
2026-07-09 SJX771 - Jul 9, 01:10 UTCJul 9, 01:55 UTC45m
2026-07-08 SJX031 SEA → TPE Jul 8, 08:35 UTCJul 8, 20:00 UTC11h 25m
2026-07-07 SJX032 TPE → SEA Jul 7, 12:30 UTCJul 7, 23:10 UTC10h 40m
2026-07-07 SJX871 - Jul 7, 07:20 UTCJul 7, 08:25 UTC1h 5m
2026-07-07 SJX870 - Jul 7, 04:25 UTCJul 7, 04:50 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-58502 page for operator, model, and routing details .

Mode-S 8991E5 frequently asked

What is Mode-S code 8991E5?
8991E5 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58502.
Where is Mode-S 8991E5 registered?
Mode-S code 8991E5 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8991E5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8991E5, octal 42310745, decimal 9,015,781.
What flights does 8991E5 operate?
Mode-S 8991E5 has broadcast 20 distinct callsigns, including SJX031, SJX032, SJX011, SJX012, SJX002.