Apparatus

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sensors Mode-S transponder

8991DC

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-58301 · AIRBUS A-330-900

Hex
8991DC
Octal
42310734
Decimal
9,015,772
Country
TW
Tail
B-58301
Type
A339
Broadcasting now · callsign SJX711 · 35,000 ft
Flights observed
166
Distinct callsigns
20
Country
TW
Last broadcast
9h ago

Current position

8991DC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 8991DC 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
SJX863 STARLUX Airlines 28 2026-05-27
SJX862 STARLUX Airlines 26 2026-05-27
SJX805 STARLUX Airlines 17 2026-05-29
SJX804 STARLUX Airlines 14 2026-05-29
SJX841 STARLUX Airlines 9 2026-05-28
SJX839 STARLUX Airlines 8 2026-05-14
SJX233 STARLUX Airlines 8 2026-05-17
SJX870 STARLUX Airlines 6 2026-05-26
SJX840 STARLUX Airlines 6 2026-05-28
SJX234 STARLUX Airlines 6 2026-05-17
SJX871 STARLUX Airlines 5 2026-05-21
SJX851 STARLUX Airlines 5 2026-05-03
SJX850 STARLUX Airlines 5 2026-05-03
SJX847 STARLUX Airlines 4 2026-04-28
SJX838 STARLUX Airlines 4 2026-05-14
SJX846 STARLUX Airlines 3 2026-04-27
SJX235 STARLUX Airlines 2 2026-05-12
SJX202 STARLUX Airlines 2 2026-04-22
SJX821 STARLUX Airlines 1 2026-05-12
SJX820 STARLUX Airlines 1 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SJX805 NRT → TPE May 29, 12:05 UTCMay 29, 15:20 UTC3h 15m
2026-05-29 SJX804 TPE → NRT May 29, 07:20 UTCMay 29, 10:05 UTC2h 45m
2026-05-28 SJX841 FUK → TPE May 28, 06:55 UTCMay 28, 07:25 UTC30m
2026-05-28 SJX840 TPE → FUK May 28, 03:40 UTCMay 28, 03:50 UTC10m
2026-05-28 SJX840 TPE → FUK May 28, 02:00 UTCMay 28, 02:20 UTC20m
2026-05-27 SJX863 SDJ → TPE May 27, 08:45 UTCMay 27, 11:35 UTC2h 50m
2026-05-27 SJX862 TPE → SDJ May 27, 03:50 UTCMay 27, 06:34 UTC2h 45m
2026-05-26 SJX870 TPE → OKA May 26, 04:15 UTCMay 26, 08:34 UTC4h 20m
2026-05-25 SJX870 TPE → OKA May 25, 04:50 UTCMay 25, 08:55 UTC4h 5m
2026-05-24 SJX863 SDJ → TPE May 24, 11:35 UTCMay 24, 12:05 UTC30m
2026-05-24 SJX863 SDJ → TPE May 24, 08:55 UTCMay 24, 10:10 UTC1h 15m
2026-05-24 SJX862 TPE → SDJ May 24, 04:05 UTCMay 24, 06:40 UTC2h 35m
2026-05-23 SJX841 FUK → TPE May 23, 07:20 UTCMay 23, 07:55 UTC35m
2026-05-23 SJX841 FUK → TPE May 23, 05:55 UTCMay 23, 06:05 UTC10m
2026-05-23 SJX840 TPE → FUK May 23, 02:05 UTCMay 23, 02:20 UTC15m
2026-05-22 SJX863 SDJ → TPE May 22, 11:40 UTCMay 22, 12:00 UTC20m
2026-05-22 SJX863 SDJ → TPE May 22, 09:00 UTCMay 22, 10:15 UTC1h 15m
2026-05-22 SJX862 TPE → SDJ May 22, 03:50 UTCMay 22, 06:30 UTC2h 40m
2026-05-21 SJX871 OKA → TPE May 21, 07:50 UTCMay 21, 08:20 UTC30m
2026-05-21 SJX870 TPE → OKA May 21, 04:20 UTCMay 21, 04:40 UTC20m
2026-05-20 SJX863 SDJ → TPE May 20, 11:15 UTCMay 20, 11:30 UTC15m
2026-05-20 SJX863 SDJ → TPE May 20, 08:30 UTCMay 20, 09:50 UTC1h 20m
2026-05-20 SJX862 TPE → SDJ May 20, 03:50 UTCMay 20, 06:30 UTC2h 41m
2026-05-19 SJX841 FUK → TPE May 19, 07:15 UTCMay 19, 07:30 UTC15m
2026-05-19 SJX841 FUK → TPE May 19, 05:45 UTCMay 19, 05:55 UTC10m
2026-05-19 SJX840 TPE → FUK May 19, 02:05 UTCMay 19, 02:30 UTC25m
2026-05-18 SJX805 NRT → TPE May 18, 15:00 UTCMay 18, 15:30 UTC30m
2026-05-18 SJX805 NRT → TPE May 18, 12:20 UTCMay 18, 13:40 UTC1h 20m
2026-05-18 SJX804 TPE → NRT May 18, 07:25 UTCMay 18, 10:15 UTC2h 50m
2026-05-17 SJX805 NRT → TPE May 17, 14:35 UTCMay 17, 14:55 UTC20m
2026-05-17 SJX805 NRT → TPE May 17, 12:05 UTCMay 17, 14:05 UTC2h 0m
2026-05-17 SJX804 TPE → NRT May 17, 07:25 UTCMay 17, 10:20 UTC2h 55m
2026-05-17 SJX234 HKG → TPE May 17, 03:50 UTCMay 17, 05:10 UTC1h 20m
2026-05-17 SJX233 TPE → HKG May 17, 00:45 UTCMay 17, 02:10 UTC1h 25m
2026-05-16 SJX863 SDJ → TPE May 16, 08:36 UTCMay 16, 11:25 UTC2h 50m
2026-05-16 SJX862 TPE → SDJ May 16, 03:50 UTCMay 16, 06:41 UTC2h 51m
2026-05-15 SJX863 SDJ → TPE May 15, 08:35 UTCMay 15, 11:40 UTC3h 5m
2026-05-15 SJX862 TPE → SDJ May 15, 05:20 UTCMay 15, 06:40 UTC1h 20m
2026-05-15 SJX862 TPE → SDJ May 15, 03:45 UTCMay 15, 04:00 UTC15m
2026-05-14 SJX839 NGO → TPE May 14, 13:25 UTCMay 14, 13:55 UTC30m
2026-05-14 SJX839 NGO → TPE May 14, 11:15 UTCMay 14, 11:50 UTC35m
2026-05-14 SJX838 TPE → NGO May 14, 07:15 UTCMay 14, 09:25 UTC2h 10m
2026-05-13 SJX841 FUK → TPE May 13, 07:15 UTCMay 13, 07:55 UTC40m
2026-05-13 SJX841 FUK → TPE May 13, 05:50 UTCMay 13, 06:00 UTC10m
2026-05-13 SJX840 TPE → FUK May 13, 02:05 UTCMay 13, 02:30 UTC25m
2026-05-12 SJX236 HKG → TPE May 12, 12:30 UTCMay 12, 13:45 UTC1h 15m
2026-05-12 SJX235 TPE → HKG May 12, 10:25 UTCMay 12, 10:45 UTC20m
2026-05-12 SJX235 TPE → HKG May 12, 09:15 UTCMay 12, 09:45 UTC30m
2026-05-12 SJX821 KIX → TPE May 12, 04:40 UTCMay 12, 07:15 UTC2h 35m
2026-05-12 SJX820 TPE → KIX May 12, 02:55 UTCMay 12, 03:05 UTC10m

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-58301 page for operator, model, and routing details .

Mode-S 8991DC frequently asked

What is Mode-S code 8991DC?
8991DC is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-58301.
Where is Mode-S 8991DC registered?
Mode-S code 8991DC is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8991DC broadcasting right now?
Yes. Mode-S 8991DC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8991DC, octal 42310734, decimal 9,015,772.
What flights does 8991DC operate?
Mode-S 8991DC has broadcast 20 distinct callsigns, including SJX863, SJX862, SJX805, SJX804, SJX841.