Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8991DA

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58212 · AIRBUS A-321neo

Hex
8991DA
Octal
42310732
Decimal
9,015,770
Country
TW
Tail
B-58212
Type
A21N
No current signal · last broadcast Jul 26, 14:45 UTC
Flights observed
319
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 14:45 UTC

Last known position

Most recent position reported by Mode-S 8991DA.

Country allocation

The ICAO 24-bit address 8991DA 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
SJX861 STARLUX Airlines 15 2026-07-25
SJX786 - 13 2026-06-27
SJX233 - 13 2026-06-17
SJX860 STARLUX Airlines 12 2026-07-25
SJX785 STARLUX Airlines 11 2026-06-26
SJX714 - 10 2026-06-27
SJX303 - 10 2026-07-03
SJX713 STARLUX Airlines 9 2026-06-10
SJX234 - 9 2026-06-17
SJX902 - 8 2026-07-14
SJX792 STARLUX Airlines 8 2026-07-23
SJX791 - 8 2026-07-23
SJX762 STARLUX Airlines 8 2026-07-24
SJX761 STARLUX Airlines 8 2026-07-24
SJX903 - 7 2026-07-14
SJX302 - 7 2026-07-03
SJX205 - 7 2026-06-29
SJX835 - 6 2026-07-14
SJX332 - 6 2026-07-09
SJX309 - 6 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SJX703 TPE → DAD Jul 26, 08:00 UTCJul 26, 14:45 UTC6h 45m
2026-07-25 SJX861 HKD → TPE Jul 25, 12:00 UTCJul 25, 12:25 UTC25m
2026-07-25 SJX861 HKD → TPE Jul 25, 09:00 UTCJul 25, 10:55 UTC1h 55m
2026-07-25 SJX860 TPE → HKD Jul 25, 04:25 UTCJul 25, 07:40 UTC3h 15m
2026-07-24 SJX762 CGK → TPE Jul 24, 07:15 UTCJul 24, 10:55 UTC3h 40m
2026-07-24 SJX762 CGK → TPE Jul 24, 05:35 UTCJul 24, 05:45 UTC10m
2026-07-24 SJX761 TPE → CGK Jul 24, 03:55 UTCJul 24, 04:15 UTC20m
2026-07-23 SJX761 TPE → CGK Jul 23, 23:15 UTCJul 24, 02:35 UTC3h 20m
2026-07-23 SJX792 CRK → TPE Jul 23, 12:50 UTCJul 23, 14:40 UTC1h 50m
2026-07-23 SJX791 - Jul 23, 09:35 UTCJul 23, 11:15 UTC1h 40m
2026-07-23 SJX901 - Jul 23, 07:35 UTCJul 23, 08:00 UTC25m
2026-07-23 SJX901 - Jul 23, 06:05 UTCJul 23, 06:35 UTC30m
2026-07-23 SJX900 TPE → PUS Jul 23, 04:25 UTCJul 23, 04:45 UTC20m
2026-07-23 SJX900 TPE → PUS Jul 23, 02:55 UTCJul 23, 03:25 UTC30m
2026-07-22 SJX718 - Jul 22, 11:55 UTCJul 22, 14:25 UTC2h 30m
2026-07-21 SJX781 TPE → CEB Jul 21, 23:25 UTCJul 22, 05:25 UTC6h 0m
2026-07-21 SJX752 CNX → TPE Jul 21, 10:45 UTCJul 21, 14:10 UTC3h 25m
2026-07-21 SJX751 TPE → CNX Jul 21, 05:35 UTCJul 21, 09:20 UTC3h 45m
2026-07-20 SJX861 HKD → TPE Jul 20, 11:50 UTCJul 20, 12:15 UTC25m
2026-07-20 SJX861 HKD → TPE Jul 20, 08:50 UTCJul 20, 10:45 UTC1h 55m
2026-07-20 SJX860 TPE → HKD Jul 20, 04:10 UTCJul 20, 07:20 UTC3h 10m
2026-07-19 SJX762 - Jul 19, 07:35 UTCJul 19, 10:55 UTC3h 20m
2026-07-19 SJX761 TPE → CGK Jul 19, 04:00 UTCJul 19, 04:15 UTC15m
2026-07-18 SJX761 TPE → CGK Jul 18, 23:15 UTCJul 19, 02:30 UTC3h 15m
2026-07-18 SJX861 - Jul 18, 12:15 UTCJul 18, 12:35 UTC20m
2026-07-18 SJX861 - Jul 18, 09:10 UTCJul 18, 11:00 UTC1h 50m
2026-07-18 SJX860 TPE → HKD Jul 18, 04:40 UTCJul 18, 07:55 UTC3h 15m
2026-07-17 SJX762 - Jul 17, 07:55 UTCJul 17, 11:20 UTC3h 25m
2026-07-17 SJX762 - Jul 17, 06:15 UTCJul 17, 06:25 UTC10m
2026-07-17 SJX761 TPE → CGK Jul 17, 04:20 UTCJul 17, 04:39 UTC20m
2026-07-16 SJX761 TPE → CGK Jul 16, 23:40 UTCJul 17, 02:50 UTC3h 10m
2026-07-16 SJX718 - Jul 16, 11:54 UTCJul 16, 13:40 UTC1h 45m
2026-07-16 SJX718 - Jul 16, 10:59 UTCJul 16, 11:10 UTC10m
2026-07-16 SJX717 - Jul 16, 09:05 UTCJul 16, 09:25 UTC20m
2026-07-16 SJX717 - Jul 16, 07:10 UTCJul 16, 08:20 UTC1h 10m
2026-07-15 SJX861 - Jul 15, 11:55 UTCJul 15, 12:15 UTC20m
2026-07-15 SJX861 - Jul 15, 09:00 UTCJul 15, 10:50 UTC1h 50m
2026-07-15 SJX860 - Jul 15, 05:50 UTCJul 15, 07:25 UTC1h 35m
2026-07-15 SJX860 - Jul 15, 04:15 UTCJul 15, 04:30 UTC15m
2026-07-14 SJX903 PUS → TPE Jul 14, 10:10 UTCJul 14, 12:00 UTC1h 50m
2026-07-14 SJX902 - Jul 14, 08:35 UTCJul 14, 09:00 UTC25m
2026-07-14 SJX902 - Jul 14, 07:10 UTCJul 14, 07:35 UTC25m
2026-07-14 SJX835 UKB → TPE Jul 14, 03:20 UTCJul 14, 05:40 UTC2h 20m
2026-07-13 SJX834 TPE → UKB Jul 13, 23:10 UTCJul 14, 01:30 UTC2h 20m
2026-07-13 SJX206 - Jul 13, 13:30 UTCJul 13, 14:50 UTC1h 20m
2026-07-13 SJX331 - Jul 13, 08:35 UTCJul 13, 09:45 UTC1h 10m
2026-07-13 SJX301 - Jul 13, 04:25 UTCJul 13, 06:50 UTC2h 25m
2026-07-13 SJX300 - Jul 13, 00:45 UTCJul 13, 02:55 UTC2h 10m
2026-07-12 SJX315 - Jul 12, 07:25 UTCJul 12, 10:10 UTC2h 45m
2026-07-12 SJX314 - Jul 12, 02:40 UTCJul 12, 05:40 UTC3h 0m

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-58212 page for operator, model, and routing details .

Mode-S 8991DA frequently asked

What is Mode-S code 8991DA?
8991DA is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58212.
Where is Mode-S 8991DA registered?
Mode-S code 8991DA is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8991DA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8991DA, octal 42310732, decimal 9,015,770.
What flights does 8991DA operate?
Mode-S 8991DA has broadcast 20 distinct callsigns, including SJX861, SJX786, SJX233, SJX860, SJX785.