Apparatus

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sensors Mode-S transponder

8991D6

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58208 · AIRBUS A-321neo

Hex
8991D6
Octal
42310726
Decimal
9,015,766
Country
TW
Tail
B-58208
Type
A21N
No current signal · last broadcast Jul 26, 15:05 UTC
Flights observed
362
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 15:05 UTC

Last known position

Most recent position reported by Mode-S 8991D6.

Country allocation

The ICAO 24-bit address 8991D6 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
SJX301 STARLUX Airlines 19 2026-07-23
SJX331 STARLUX Airlines 18 2026-07-23
SJX332 STARLUX Airlines 17 2026-07-22
SJX300 STARLUX Airlines 15 2026-07-23
SJX726 - 14 2026-06-29
SJX861 - 13 2026-07-08
SJX303 - 13 2026-07-14
SJX860 - 12 2026-07-08
SJX725 - 11 2026-06-29
SJX315 - 11 2026-07-15
SJX307 - 11 2026-07-16
SJX302 - 11 2026-07-14
SJX313 - 10 2026-07-16
SJX317 STARLUX Airlines 9 2026-07-21
SJX314 - 9 2026-07-15
SJX306 - 9 2026-07-16
SJX835 STARLUX Airlines 8 2026-06-09
SJX316 STARLUX Airlines 8 2026-07-21
SJX311 STARLUX Airlines 7 2026-07-21
SJX310 STARLUX Airlines 7 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SJX784 CEB → TPE Jul 26, 08:20 UTCJul 26, 15:05 UTC6h 45m
2026-07-26 SJX786 MNL → TPE Jul 26, 02:50 UTCJul 26, 04:30 UTC1h 40m
2026-07-25 SJX785 TPE → MNL Jul 25, 23:20 UTCJul 26, 01:10 UTC1h 50m
2026-07-25 SJX752 CNX → TPE Jul 25, 10:40 UTCJul 25, 14:05 UTC3h 25m
2026-07-25 SJX751 TPE → CNX Jul 25, 05:40 UTCJul 25, 09:05 UTC3h 25m
2026-07-25 SJX790 CRK → TPE Jul 25, 02:25 UTCJul 25, 04:10 UTC1h 45m
2026-07-24 SJX789 TPE → CRK Jul 24, 23:25 UTCJul 25, 01:00 UTC1h 35m
2026-07-24 SJX752D CNX → TPE Jul 24, 16:45 UTCJul 24, 18:05 UTC1h 20m
2026-07-24 SJX752 CNX → TPE Jul 24, 10:50 UTCJul 24, 15:15 UTC4h 25m
2026-07-24 SJX751 TPE → CNX Jul 24, 08:35 UTCJul 24, 08:55 UTC20m
2026-07-24 SJX751 TPE → CNX Jul 24, 05:35 UTCJul 24, 06:50 UTC1h 15m
2026-07-24 SJX790 CRK → TPE Jul 24, 02:15 UTCJul 24, 04:00 UTC1h 45m
2026-07-23 SJX789 TPE → CRK Jul 23, 22:50 UTCJul 24, 00:40 UTC1h 50m
2026-07-23 SJX206 MFM → TPE Jul 23, 13:15 UTCJul 23, 14:45 UTC1h 30m
2026-07-23 SJX331 RMQ → MFM Jul 23, 08:35 UTCJul 23, 09:35 UTC1h 0m
2026-07-23 SJX301 TAK → RMQ Jul 23, 06:25 UTCJul 23, 06:45 UTC20m
2026-07-23 SJX301 TAK → RMQ Jul 23, 04:35 UTCJul 23, 05:05 UTC30m
2026-07-23 SJX300 RMQ → TAK Jul 23, 00:55 UTCJul 23, 03:10 UTC2h 15m
2026-07-22 SJX332 MFM → RMQ Jul 22, 11:25 UTCJul 22, 12:30 UTC1h 5m
2026-07-22 SJX301 TAK → RMQ Jul 22, 04:40 UTCJul 22, 05:10 UTC30m
2026-07-22 SJX300 RMQ → TAK Jul 22, 00:50 UTCJul 22, 03:05 UTC2h 15m
2026-07-21 SJX317 KMJ → RMQ Jul 21, 11:45 UTCJul 21, 12:10 UTC25m
2026-07-21 SJX316 RMQ → KMJ Jul 21, 07:05 UTCJul 21, 07:30 UTC25m
2026-07-21 SJX311 PUS → RMQ Jul 21, 05:05 UTCJul 21, 05:25 UTC20m
2026-07-21 SJX311 PUS → RMQ Jul 21, 03:30 UTCJul 21, 03:55 UTC25m
2026-07-21 SJX310 RMQ → PUS Jul 21, 00:15 UTCJul 21, 02:10 UTC1h 55m
2026-07-20 SJX317 KMJ → RMQ Jul 20, 11:45 UTCJul 20, 12:20 UTC35m
2026-07-20 SJX316 - Jul 20, 07:25 UTCJul 20, 08:20 UTC55m
2026-07-20 SJX330 MFM → RMQ Jul 20, 03:50 UTCJul 20, 05:05 UTC1h 15m
2026-07-20 SJX329 RMQ → MFM Jul 20, 00:55 UTCJul 20, 01:50 UTC55m
2026-07-19 SJX332 - Jul 19, 11:30 UTCJul 19, 12:40 UTC1h 10m
2026-07-19 SJX331 RMQ → MFM Jul 19, 08:30 UTCJul 19, 09:25 UTC55m
2026-07-19 SJX301 - Jul 19, 06:00 UTCJul 19, 06:30 UTC30m
2026-07-19 SJX301 - Jul 19, 04:20 UTCJul 19, 05:05 UTC45m
2026-07-19 SJX300 - Jul 19, 00:45 UTCJul 19, 02:55 UTC2h 10m
2026-07-18 SJX317 - Jul 18, 11:50 UTCJul 18, 12:10 UTC20m
2026-07-18 SJX317 - Jul 18, 10:30 UTCJul 18, 10:40 UTC10m
2026-07-18 SJX316 - Jul 18, 07:15 UTCJul 18, 07:40 UTC25m
2026-07-18 SJX311 - Jul 18, 05:10 UTCJul 18, 05:25 UTC15m
2026-07-18 SJX311 - Jul 18, 03:40 UTCJul 18, 04:00 UTC20m
2026-07-18 SJX310 - Jul 18, 01:54 UTCJul 18, 02:14 UTC20m
2026-07-18 SJX310 - Jul 18, 00:19 UTCJul 18, 00:45 UTC25m
2026-07-17 SJX332 - Jul 17, 11:35 UTCJul 17, 12:45 UTC1h 10m
2026-07-17 SJX331 - Jul 17, 08:45 UTCJul 17, 09:40 UTC55m
2026-07-17 SJX301 - Jul 17, 06:05 UTCJul 17, 06:45 UTC40m
2026-07-17 SJX301 - Jul 17, 04:25 UTCJul 17, 04:59 UTC35m
2026-07-17 SJX300 - Jul 17, 00:55 UTCJul 17, 03:10 UTC2h 15m
2026-07-16 SJX313 - Jul 16, 11:54 UTCJul 16, 12:20 UTC25m
2026-07-16 SJX312 - Jul 16, 08:40 UTCJul 16, 09:00 UTC20m
2026-07-16 SJX307 - Jul 16, 06:40 UTCJul 16, 06:55 UTC15m

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-58208 page for operator, model, and routing details .

Mode-S 8991D6 frequently asked

What is Mode-S code 8991D6?
8991D6 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58208.
Where is Mode-S 8991D6 registered?
Mode-S code 8991D6 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8991D6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8991D6, octal 42310726, decimal 9,015,766.
What flights does 8991D6 operate?
Mode-S 8991D6 has broadcast 20 distinct callsigns, including SJX301, SJX331, SJX332, SJX300, SJX726.