Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8991E3

ICAO 24-bit transponder address · allocated to Taiwan

Hex
8991E3
Octal
42310743
Decimal
9,015,779
Country
TW
No current signal · last broadcast 24d ago
Flights observed
259
Distinct callsigns
20
Country
TW
Last broadcast
24d ago

Last known position

Most recent position reported by Mode-S 8991E3.

Country allocation

The ICAO 24-bit address 8991E3 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
SJX839 STARLUX Airlines 25 2026-07-20
SJX847 STARLUX Airlines 22 2026-07-20
SJX838 STARLUX Airlines 21 2026-07-20
SJX846 STARLUX Airlines 18 2026-07-19
SJX821 STARLUX Airlines 14 2026-07-19
SJX863 STARLUX Airlines 13 2026-07-21
SJX820 - 11 2026-07-19
SJX235 - 11 2026-07-04
SJX201 STARLUX Airlines 11 2026-07-24
SJX862 STARLUX Airlines 10 2026-07-21
SJX841 - 10 2026-07-07
SJX202 STARLUX Airlines 10 2026-07-24
SJX805 - 9 2026-07-08
SJX745 STARLUX Airlines 9 2026-07-23
SJX205 STARLUX Airlines 9 2026-07-19
SJX840 - 8 2026-07-07
SJX804 STARLUX Airlines 7 2026-07-25
SJX746 STARLUX Airlines 7 2026-07-23
SJX236 - 7 2026-07-04
SJX206 STARLUX Airlines 7 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SJX3805 NRT → TPE Jul 26, 03:45 UTCJul 26, 06:35 UTC2h 51m
2026-07-25 SJX804 TPE → NRT Jul 25, 07:10 UTCJul 25, 10:25 UTC3h 15m
2026-07-24 SJX202 MFM → TPE Jul 24, 03:35 UTCJul 24, 04:50 UTC1h 15m
2026-07-24 SJX201 TPE → MFM Jul 24, 00:45 UTCJul 24, 01:55 UTC1h 10m
2026-07-23 SJX746 BKK → TPE Jul 23, 11:45 UTCJul 23, 15:00 UTC3h 15m
2026-07-23 SJX745 TPE → BKK Jul 23, 06:15 UTCJul 23, 09:50 UTC3h 35m
2026-07-22 SJX711 TPE → SGN Jul 22, 00:05 UTCJul 22, 01:05 UTC1h 0m
2026-07-21 SJX863 SDJ → TPE Jul 21, 11:35 UTCJul 21, 11:50 UTC15m
2026-07-21 SJX863 SDJ → TPE Jul 21, 08:55 UTCJul 21, 10:15 UTC1h 20m
2026-07-21 SJX862 TPE → SDJ Jul 21, 04:15 UTCJul 21, 06:55 UTC2h 40m
2026-07-20 SJX839 NGO → TPE Jul 20, 11:25 UTCJul 20, 13:40 UTC2h 15m
2026-07-20 SJX838 TPE → NGO Jul 20, 07:10 UTCJul 20, 09:35 UTC2h 25m
2026-07-20 SJX847 KMJ → TPE Jul 20, 04:35 UTCJul 20, 05:10 UTC35m
2026-07-20 SJX847 KMJ → TPE Jul 20, 03:15 UTCJul 20, 03:25 UTC10m
2026-07-19 SJX846 TPE → KMJ Jul 19, 23:45 UTCJul 20, 00:15 UTC30m
2026-07-19 SJX206 MFM → TPE Jul 19, 13:20 UTCJul 19, 14:40 UTC1h 20m
2026-07-19 SJX205 TPE → MFM Jul 19, 10:00 UTCJul 19, 11:10 UTC1h 10m
2026-07-19 SJX821 KIX → TPE Jul 19, 06:40 UTCJul 19, 07:05 UTC25m
2026-07-19 SJX821 KIX → TPE Jul 19, 04:45 UTCJul 19, 05:30 UTC45m
2026-07-19 SJX820 TPE → KIX Jul 19, 01:05 UTCJul 19, 03:20 UTC2h 15m
2026-07-18 SJX863 - Jul 18, 11:05 UTCJul 18, 11:20 UTC15m
2026-07-18 SJX863 - Jul 18, 08:35 UTCJul 18, 09:55 UTC1h 20m
2026-07-18 SJX862 - Jul 18, 05:25 UTCJul 18, 06:45 UTC1h 20m
2026-07-18 SJX862 - Jul 18, 03:50 UTCJul 18, 04:05 UTC15m
2026-07-17 SJX839 - Jul 17, 11:30 UTCJul 17, 13:45 UTC2h 15m
2026-07-17 SJX838 - Jul 17, 07:20 UTCJul 17, 09:50 UTC2h 30m
2026-07-17 SJX847 - Jul 17, 04:54 UTCJul 17, 05:30 UTC35m
2026-07-17 SJX847 - Jul 17, 03:39 UTCJul 17, 03:50 UTC10m
2026-07-16 SJX846 TPE → KMJ Jul 16, 23:49 UTCJul 17, 00:40 UTC50m
2026-07-16 SJX847 - Jul 16, 05:00 UTCJul 16, 05:20 UTC20m
2026-07-16 SJX847 - Jul 16, 03:35 UTCJul 16, 03:45 UTC10m
2026-07-15 SJX846 - Jul 15, 23:40 UTCJul 15, 23:55 UTC15m
2026-07-15 SJX863 - Jul 15, 11:30 UTCJul 15, 11:45 UTC15m
2026-07-15 SJX863 - Jul 15, 09:00 UTCJul 15, 10:25 UTC1h 25m
2026-07-15 SJX862 - Jul 15, 04:00 UTCJul 15, 06:45 UTC2h 45m
2026-07-14 SJX863 - Jul 14, 08:35 UTCJul 14, 11:20 UTC2h 45m
2026-07-14 SJX862 - Jul 14, 03:45 UTCJul 14, 06:35 UTC2h 50m
2026-07-13 SJX1871 - Jul 13, 07:55 UTCJul 13, 09:00 UTC1h 5m
2026-07-13 SJX1870 - Jul 13, 05:01 UTCJul 13, 05:35 UTC35m
2026-07-12 SJX839 - Jul 12, 12:50 UTCJul 12, 14:05 UTC1h 15m
2026-07-12 SJX839 - Jul 12, 11:40 UTCJul 12, 11:55 UTC15m
2026-07-12 SJX838 - Jul 12, 07:31 UTCJul 12, 09:45 UTC2h 15m
2026-07-12 SJX847 - Jul 12, 05:15 UTCJul 12, 05:50 UTC35m
2026-07-12 SJX847 - Jul 12, 04:01 UTCJul 12, 04:15 UTC15m
2026-07-11 SJX846 - Jul 11, 23:50 UTCJul 12, 00:20 UTC30m
2026-07-11 SJX3746 - Jul 11, 20:35 UTCJul 11, 21:35 UTC1h 0m
2026-07-11 SJX3746 - Jul 11, 18:05 UTCJul 11, 18:25 UTC20m
2026-07-10 SJX745 - Jul 10, 08:50 UTCJul 10, 09:35 UTC45m
2026-07-10 SJX745 - Jul 10, 06:15 UTCJul 10, 07:00 UTC45m
2026-07-09 SJX863 - Jul 9, 08:45 UTCJul 9, 11:40 UTC2h 55m

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.

Mode-S 8991E3 frequently asked

What is Mode-S code 8991E3?
8991E3 is an ICAO 24-bit transponder address. Allocated to Taiwan.
Where is Mode-S 8991E3 registered?
Mode-S code 8991E3 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8991E3 broadcasting right now?
No active broadcast right now. Last signal was 24d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8991E3, octal 42310743, decimal 9,015,779.
What flights does 8991E3 operate?
Mode-S 8991E3 has broadcast 20 distinct callsigns, including SJX839, SJX847, SJX838, SJX846, SJX821.