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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
Broadcasting now · callsign SJX012 · 34,500 ft
Flights observed
128
Distinct callsigns
20
Country
TW
Last broadcast
7h ago

Current position

8991E5 is currently broadcasting. Map zoomed to live position.

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 12 2026-05-16
SJX012 STARLUX Airlines 12 2026-05-29
SJX011 STARLUX Airlines 12 2026-05-26
SJX850 STARLUX Airlines 10 2026-05-21
SJX823 STARLUX Airlines 9 2026-05-25
SJX822 STARLUX Airlines 8 2026-05-25
SJX009 - 8 2026-05-24
SJX032 STARLUX Airlines 7 2026-05-15
SJX851 STARLUX Airlines 6 2026-05-21
SJX010 STARLUX Airlines 6 2026-05-23
SJX002 - 6 2026-05-27
SJX871 STARLUX Airlines 4 2026-04-25
SJX870 STARLUX Airlines 4 2026-04-25
SJX771 STARLUX Airlines 4 2026-05-27
SJX742 STARLUX Airlines 4 2026-05-15
SJX741 STARLUX Airlines 4 2026-05-15
SJX001 - 4 2026-05-28
SJX772 STARLUX Airlines 3 2026-05-27
SJX746 STARLUX Airlines 1 2026-05-14
SJX745 STARLUX Airlines 1 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SJX012 TPE → SFO May 29, 18:35 UTCMay 29, 19:20 UTC45m
2026-05-29 SJX012 TPE → SFO May 29, 16:40 UTCMay 29, 17:00 UTC20m
2026-05-28 SJX001 - May 28, 08:00 UTCMay 28, 21:40 UTC13h 40m
2026-05-27 SJX002 - May 27, 16:30 UTCMay 28, 04:15 UTC11h 45m
2026-05-27 SJX772 SIN → TPE May 27, 06:20 UTCMay 27, 10:40 UTC4h 20m
2026-05-27 SJX771 TPE → SIN May 27, 00:25 UTCMay 27, 01:24 UTC1h 0m
2026-05-26 SJX011 SFO → TPE May 26, 20:50 UTCMay 26, 21:14 UTC25m
2026-05-26 SJX011 SFO → TPE May 26, 08:15 UTCMay 26, 19:34 UTC11h 20m
2026-05-25 SJX012 TPE → SFO May 25, 16:50 UTCMay 26, 04:24 UTC11h 34m
2026-05-25 SJX823 KIX → TPE May 25, 06:50 UTCMay 25, 09:10 UTC2h 20m
2026-05-25 SJX822 TPE → KIX May 25, 02:55 UTCMay 25, 05:20 UTC2h 25m
2026-05-24 SJX009 - May 24, 06:20 UTCMay 24, 19:45 UTC13h 25m
2026-05-23 SJX010 TPE → ONT May 23, 12:30 UTCMay 23, 23:50 UTC11h 20m
2026-05-23 SJX823 KIX → TPE May 23, 08:25 UTCMay 23, 08:50 UTC25m
2026-05-23 SJX823 KIX → TPE May 23, 06:30 UTCMay 23, 07:00 UTC30m
2026-05-23 SJX822 TPE → KIX May 23, 02:25 UTCMay 23, 04:30 UTC2h 4m
2026-05-22 SJX011 SFO → TPE May 22, 20:30 UTCMay 22, 20:50 UTC20m
2026-05-22 SJX011 SFO → TPE May 22, 08:20 UTCMay 22, 19:05 UTC10h 45m
2026-05-21 SJX012 TPE → SFO May 21, 18:25 UTCMay 22, 03:15 UTC8h 50m
2026-05-21 SJX012 TPE → SFO May 21, 16:30 UTCMay 21, 16:45 UTC15m
2026-05-21 SJX851 CTS → TPE May 21, 07:40 UTCMay 21, 11:25 UTC3h 45m
2026-05-21 SJX850 TPE → CTS May 21, 02:55 UTCMay 21, 06:00 UTC3h 5m
2026-05-20 SJX011 SFO → TPE May 20, 08:25 UTCMay 20, 21:10 UTC12h 45m
2026-05-19 SJX012 TPE → SFO May 19, 17:30 UTCMay 20, 04:00 UTC10h 30m
2026-05-19 SJX012 TPE → SFO May 19, 16:35 UTCMay 19, 16:50 UTC15m
2026-05-18 SJX025 PHX → TPE May 18, 06:45 UTCMay 18, 20:50 UTC14h 4m
2026-05-17 SJX026 TPE → PHX May 17, 12:30 UTCMay 18, 00:20 UTC11h 50m
2026-05-17 SJX823 KIX → TPE May 17, 06:25 UTCMay 17, 08:40 UTC2h 15m
2026-05-17 SJX822 TPE → KIX May 17, 04:10 UTCMay 17, 04:50 UTC40m
2026-05-17 SJX822 TPE → KIX May 17, 02:35 UTCMay 17, 02:45 UTC10m
2026-05-16 SJX031 SEA → TPE May 16, 08:36 UTCMay 16, 20:20 UTC11h 45m
2026-05-15 SJX032 TPE → SEA May 15, 12:40 UTCMay 15, 22:55 UTC10h 14m
2026-05-15 SJX742 BKK → TPE May 15, 06:35 UTCMay 15, 10:15 UTC3h 40m
2026-05-15 SJX741 TPE → BKK May 15, 01:40 UTCMay 15, 04:45 UTC3h 5m
2026-05-14 SJX746 BKK → TPE May 14, 12:35 UTCMay 14, 15:35 UTC3h 0m
2026-05-14 SJX745 TPE → BKK May 14, 07:20 UTCMay 14, 10:40 UTC3h 20m
2026-05-13 SJX851 CTS → TPE May 13, 08:00 UTCMay 13, 11:40 UTC3h 40m
2026-05-13 SJX850 TPE → CTS May 13, 04:05 UTCMay 13, 05:55 UTC1h 50m
2026-05-13 SJX850 TPE → CTS May 13, 02:35 UTCMay 13, 02:50 UTC15m
2026-05-12 SJX851 CTS → TPE May 12, 07:45 UTCMay 12, 11:25 UTC3h 40m
2026-05-12 SJX850 TPE → CTS May 12, 02:55 UTCMay 12, 05:35 UTC2h 40m
2026-05-11 SJX011 SFO → TPE May 11, 08:25 UTCMay 11, 21:00 UTC12h 36m
2026-05-10 SJX012 TPE → SFO May 10, 16:40 UTCMay 11, 03:20 UTC10h 40m
2026-05-10 SJX772 SIN → TPE May 10, 06:30 UTCMay 10, 10:24 UTC3h 55m
2026-05-10 SJX771 TPE → SIN May 10, 00:20 UTCMay 10, 04:00 UTC3h 40m
2026-05-09 SJX851 CTS → TPE May 9, 11:40 UTCMay 9, 15:30 UTC3h 50m
2026-05-09 SJX850 TPE → CTS May 9, 08:55 UTCMay 9, 10:05 UTC1h 10m
2026-05-09 SJX850 TPE → CTS May 9, 03:55 UTCMay 9, 07:20 UTC3h 25m
2026-05-09 SJX850 TPE → CTS May 9, 02:35 UTCMay 9, 02:45 UTC10m
2026-05-08 SJX011 SFO → TPE May 8, 21:20 UTCMay 8, 21:45 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?
Yes. Mode-S 8991E5 is currently airborne.
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, SJX012, SJX011, SJX850, SJX823.