Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8991D7

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58209 · AIRBUS A-321neo

Hex
8991D7
Octal
42310727
Decimal
9,015,767
Country
TW
Tail
B-58209
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
312
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 8991D7.

Country allocation

The ICAO 24-bit address 8991D7 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
SJX726 - 16 2026-07-04
SJX785 - 13 2026-07-11
SJX786 - 12 2026-07-12
SJX307 STARLUX Airlines 12 2026-06-10
SJX752 - 11 2026-07-16
SJX315 STARLUX Airlines 11 2026-06-04
SJX751 - 10 2026-07-16
SJX725 - 10 2026-07-04
SJX331 STARLUX Airlines 10 2026-06-11
SJX761 STARLUX Airlines 9 2026-07-17
SJX332 STARLUX Airlines 9 2026-06-07
SJX314 STARLUX Airlines 9 2026-06-04
SJX301 STARLUX Airlines 8 2026-06-11
SJX715 - 7 2026-07-13
SJX306 STARLUX Airlines 7 2026-06-10
SJX790 - 6 2026-07-03
SJX789 - 6 2026-07-02
SJX716 - 6 2026-07-13
SJX713 - 6 2026-07-10
SJX792 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SJX761 TPE → CGK Jul 17, 23:10 UTCJul 18, 01:45 UTC2h 35m
2026-07-17 SJX901 PUS → TPE Jul 17, 06:15 UTCJul 17, 08:10 UTC1h 55m
2026-07-17 SJX900 - Jul 17, 04:35 UTCJul 17, 04:54 UTC20m
2026-07-17 SJX900 - Jul 17, 03:05 UTCJul 17, 03:30 UTC25m
2026-07-16 SJX752 - Jul 16, 10:15 UTCJul 16, 13:45 UTC3h 30m
2026-07-16 SJX751 - Jul 16, 05:30 UTCJul 16, 08:50 UTC3h 20m
2026-07-15 SJX762 - Jul 15, 07:35 UTCJul 15, 10:55 UTC3h 20m
2026-07-15 SJX761 - Jul 15, 03:45 UTCJul 15, 04:00 UTC15m
2026-07-14 SJX761 - Jul 14, 23:15 UTCJul 15, 02:20 UTC3h 5m
2026-07-14 SJX861 - Jul 14, 09:20 UTCJul 14, 12:25 UTC3h 5m
2026-07-14 SJX860 - Jul 14, 04:35 UTCJul 14, 07:50 UTC3h 15m
2026-07-13 SJX792 - Jul 13, 13:05 UTCJul 13, 14:40 UTC1h 35m
2026-07-13 SJX791 - Jul 13, 09:45 UTCJul 13, 11:25 UTC1h 40m
2026-07-13 SJX716 - Jul 13, 05:45 UTCJul 13, 07:10 UTC1h 25m
2026-07-13 SJX716 - Jul 13, 04:50 UTCJul 13, 05:01 UTC10m
2026-07-13 SJX715 - Jul 13, 00:30 UTCJul 13, 01:40 UTC1h 10m
2026-07-12 SJX703 TPE → TPE Jul 12, 08:10 UTCJul 12, 14:30 UTC6h 20m
2026-07-12 SJX786 - Jul 12, 03:01 UTCJul 12, 04:40 UTC1h 40m
2026-07-11 SJX785 TPE → MNL Jul 11, 23:25 UTCJul 12, 01:25 UTC2h 0m
2026-07-10 SJX713 - Jul 10, 06:45 UTCJul 10, 14:10 UTC7h 25m
2026-07-10 SJX786 - Jul 10, 03:25 UTCJul 10, 05:10 UTC1h 45m
2026-07-09 SJX785 TPE → MNL Jul 9, 23:55 UTCJul 10, 01:35 UTC1h 40m
2026-07-09 SJX714 - Jul 9, 13:55 UTCJul 9, 15:10 UTC1h 15m
2026-07-09 SJX713 - Jul 9, 06:40 UTCJul 9, 07:25 UTC45m
2026-07-09 SJX786 - Jul 9, 03:00 UTCJul 9, 04:45 UTC1h 45m
2026-07-08 SJX785 TPE → MNL Jul 8, 23:35 UTCJul 9, 01:15 UTC1h 40m
2026-07-08 SJX236 - Jul 8, 12:25 UTCJul 8, 13:50 UTC1h 25m
2026-07-08 SJX235 TPE → HKG Jul 8, 09:10 UTCJul 8, 10:35 UTC1h 25m
2026-07-08 SJX891 - Jul 8, 06:20 UTCJul 8, 06:50 UTC30m
2026-07-08 SJX890 - Jul 8, 02:45 UTCJul 8, 03:10 UTC25m
2026-07-07 SJX716 - Jul 7, 05:25 UTCJul 7, 06:55 UTC1h 30m
2026-07-07 SJX716 - Jul 7, 04:30 UTCJul 7, 04:40 UTC10m
2026-07-07 SJX715 - Jul 7, 00:10 UTCJul 7, 02:20 UTC2h 10m
2026-07-06 SJX713 TPE → TPE Jul 6, 06:35 UTCJul 6, 14:30 UTC7h 55m
2026-07-06 SJX786 MNL → TPE Jul 6, 03:10 UTCJul 6, 05:05 UTC1h 55m
2026-07-05 SJX785 TPE → MNL Jul 5, 23:25 UTCJul 6, 01:15 UTC1h 50m
2026-07-05 SJX783 TPE → TPE Jul 5, 08:35 UTCJul 5, 14:45 UTC6h 10m
2026-07-04 SJX726 - Jul 4, 12:55 UTCJul 4, 14:10 UTC1h 15m
2026-07-04 SJX726 - Jul 4, 09:40 UTCJul 4, 09:55 UTC15m
2026-07-04 SJX725 - Jul 4, 03:55 UTCJul 4, 08:10 UTC4h 15m
2026-07-03 SJX706 TPE → TPE Jul 3, 05:40 UTCJul 3, 14:15 UTC8h 35m
2026-07-03 SJX790 - Jul 3, 02:20 UTCJul 3, 04:00 UTC1h 40m
2026-07-02 SJX789 - Jul 2, 23:10 UTCJul 3, 00:50 UTC1h 40m
2026-07-02 SJX714 TPE → TPE Jul 2, 06:41 UTCJul 2, 15:05 UTC8h 24m
2026-07-02 SJX786 - Jul 2, 03:05 UTCJul 2, 04:45 UTC1h 40m
2026-07-01 SJX785 TPE → MNL Jul 1, 23:25 UTCJul 2, 01:15 UTC1h 50m
2026-07-01 SJX236 HKG → TPE Jul 1, 13:00 UTCJul 1, 14:25 UTC1h 25m
2026-07-01 SJX235 - Jul 1, 10:20 UTCJul 1, 10:35 UTC15m
2026-07-01 SJX235 - Jul 1, 09:15 UTCJul 1, 09:45 UTC30m
2026-07-01 SJX891 - Jul 1, 05:15 UTCJul 1, 05:50 UTC35m

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-58209 page for operator, model, and routing details .

Mode-S 8991D7 frequently asked

What is Mode-S code 8991D7?
8991D7 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58209.
Where is Mode-S 8991D7 registered?
Mode-S code 8991D7 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8991D7 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8991D7, octal 42310727, decimal 9,015,767.
What flights does 8991D7 operate?
Mode-S 8991D7 has broadcast 20 distinct callsigns, including SJX726, SJX785, SJX786, SJX307, SJX752.