Apparatus

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sensors Mode-S transponder

8991D5

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58207 · AIRBUS A-321neo

Hex
8991D5
Octal
42310725
Decimal
9,015,765
Country
TW
Tail
B-58207
Type
A21N
No current signal · last broadcast Jul 26, 12:25 UTC
Flights observed
327
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 12:25 UTC

Last known position

Most recent position reported by Mode-S 8991D5.

Country allocation

The ICAO 24-bit address 8991D5 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
SJX786 STARLUX Airlines 13 2026-07-23
SJX785 STARLUX Airlines 12 2026-07-22
SJX313 STARLUX Airlines 12 2026-07-26
SJX307 STARLUX Airlines 12 2026-07-26
SJX726 STARLUX Airlines 11 2026-07-20
SJX861 STARLUX Airlines 10 2026-07-22
SJX762 - 10 2026-07-12
SJX312 STARLUX Airlines 9 2026-07-26
SJX306 STARLUX Airlines 9 2026-07-26
SJX761 - 8 2026-07-12
SJX725 STARLUX Airlines 8 2026-07-20
SJX714 STARLUX Airlines 8 2026-06-09
SJX331 - 8 2026-06-29
SJX782 - 7 2026-07-17
SJX860 - 6 2026-07-03
SJX713 STARLUX Airlines 6 2026-06-11
SJX712 STARLUX Airlines 6 2026-04-29
SJX704 - 6 2026-07-02
SJX332 - 6 2026-06-27
SJX206 - 6 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SJX313 OKA → RMQ Jul 26, 11:20 UTCJul 26, 12:25 UTC1h 5m
2026-07-26 SJX312 RMQ → OKA Jul 26, 08:40 UTCJul 26, 09:10 UTC30m
2026-07-26 SJX307 UKB → RMQ Jul 26, 04:40 UTCJul 26, 07:15 UTC2h 36m
2026-07-26 SJX306 RMQ → UKB Jul 26, 01:00 UTCJul 26, 03:20 UTC2h 20m
2026-07-25 SJX313 OKA → RMQ Jul 25, 11:20 UTCJul 25, 12:25 UTC1h 5m
2026-07-25 SJX312 RMQ → OKA Jul 25, 08:45 UTCJul 25, 09:10 UTC25m
2026-07-25 SJX307 UKB → RMQ Jul 25, 06:40 UTCJul 25, 07:05 UTC25m
2026-07-25 SJX307 UKB → RMQ Jul 25, 04:40 UTCJul 25, 05:25 UTC45m
2026-07-25 SJX306 RMQ → UKB Jul 25, 01:00 UTCJul 25, 03:20 UTC2h 20m
2026-07-24 SJX2523 TPE → RMQ Jul 24, 11:45 UTCJul 24, 12:10 UTC25m
2026-07-24 SJX901 PUS → TPE Jul 24, 06:00 UTCJul 24, 08:00 UTC2h 0m
2026-07-24 SJX900 TPE → PUS Jul 24, 04:15 UTCJul 24, 04:40 UTC25m
2026-07-24 SJX900 TPE → PUS Jul 24, 02:50 UTCJul 24, 03:10 UTC20m
2026-07-23 SJX718 - Jul 23, 11:45 UTCJul 23, 14:10 UTC2h 25m
2026-07-23 SJX717 TPE → HAN Jul 23, 07:15 UTCJul 23, 09:35 UTC2h 20m
2026-07-23 SJX786 MNL → TPE Jul 23, 03:05 UTCJul 23, 04:50 UTC1h 45m
2026-07-22 SJX785 TPE → MNL Jul 22, 23:25 UTCJul 23, 01:10 UTC1h 45m
2026-07-22 SJX861 HKD → TPE Jul 22, 04:35 UTCJul 22, 12:35 UTC8h 0m
2026-07-20 SJX726 KUL → TPE Jul 20, 10:05 UTCJul 20, 14:20 UTC4h 15m
2026-07-20 SJX725 TPE → KUL Jul 20, 03:40 UTCJul 20, 08:35 UTC4h 55m
2026-07-19 SJX903 PUS → TPE Jul 19, 10:00 UTCJul 19, 11:50 UTC1h 50m
2026-07-19 SJX902 TPE → PUS Jul 19, 06:55 UTCJul 19, 08:45 UTC1h 50m
2026-07-18 SJX903 - Jul 18, 12:25 UTCJul 18, 12:40 UTC15m
2026-07-18 SJX903 - Jul 18, 10:55 UTCJul 18, 11:15 UTC20m
2026-07-18 SJX902 - Jul 18, 09:05 UTCJul 18, 09:25 UTC20m
2026-07-18 SJX902 - Jul 18, 07:35 UTCJul 18, 08:00 UTC25m
2026-07-17 SJX782 - Jul 17, 23:25 UTCJul 18, 05:55 UTC6h 31m
2026-07-17 SJX706 TPE → TPE Jul 17, 05:25 UTCJul 17, 14:00 UTC8h 35m
2026-07-16 SJX204 - Jul 16, 10:55 UTCJul 16, 12:20 UTC1h 25m
2026-07-16 SJX203 - Jul 16, 08:10 UTCJul 16, 09:20 UTC1h 10m
2026-07-16 SJX786 MNL → TPE Jul 16, 03:00 UTCJul 16, 04:50 UTC1h 50m
2026-07-15 SJX785 - Jul 15, 23:25 UTCJul 16, 01:05 UTC1h 40m
2026-07-15 SJX718 - Jul 15, 12:35 UTCJul 15, 14:05 UTC1h 30m
2026-07-15 SJX718 - Jul 15, 11:35 UTCJul 15, 11:45 UTC10m
2026-07-15 SJX717 - Jul 15, 07:35 UTCJul 15, 09:45 UTC2h 10m
2026-07-14 SJX782 - Jul 14, 23:20 UTCJul 15, 06:00 UTC6h 40m
2026-07-14 SJX752 CNX → TPE Jul 14, 11:05 UTCJul 14, 14:25 UTC3h 20m
2026-07-14 SJX751 - Jul 14, 05:25 UTCJul 14, 08:45 UTC3h 20m
2026-07-14 SJX790 - Jul 14, 02:15 UTCJul 14, 03:45 UTC1h 30m
2026-07-13 SJX789 - Jul 13, 23:15 UTCJul 14, 00:50 UTC1h 35m
2026-07-13 SJX706 - Jul 13, 14:30 UTCJul 13, 15:30 UTC1h 0m
2026-07-13 SJX705 - Jul 13, 07:15 UTCJul 13, 08:01 UTC45m
2026-07-13 SJX786 - Jul 13, 03:05 UTCJul 13, 04:55 UTC1h 50m
2026-07-12 SJX785 TPE → MNL Jul 12, 23:25 UTCJul 13, 01:10 UTC1h 45m
2026-07-12 SJX762 - Jul 12, 07:45 UTCJul 12, 11:10 UTC3h 25m
2026-07-12 SJX762 - Jul 12, 06:01 UTCJul 12, 06:10 UTC10m
2026-07-12 SJX761 - Jul 12, 04:05 UTCJul 12, 04:20 UTC15m
2026-07-11 SJX761 - Jul 11, 23:25 UTCJul 12, 02:35 UTC3h 10m
2026-07-11 SJX706 - Jul 11, 20:00 UTCJul 11, 20:35 UTC35m
2026-07-10 SJX705 - Jul 10, 05:30 UTCJul 10, 06:15 UTC45m

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-58207 page for operator, model, and routing details .

Mode-S 8991D5 frequently asked

What is Mode-S code 8991D5?
8991D5 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58207.
Where is Mode-S 8991D5 registered?
Mode-S code 8991D5 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8991D5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8991D5, octal 42310725, decimal 9,015,765.
What flights does 8991D5 operate?
Mode-S 8991D5 has broadcast 20 distinct callsigns, including SJX786, SJX785, SJX313, SJX307, SJX726.