sensors Mode-S transponder

884D73

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-SKS · GULFSTREAM G650

Hex
884D73
Octal
42046563
Decimal
8,932,723
Country
TH
Tail
HS-SKS
Type
GLF6
No current signal · last broadcast 7d ago
Flights observed
32
Distinct callsigns
7
Country
TH
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 884D73.

Country allocation

The ICAO 24-bit address 884D73 falls within the block assigned to Thailand (TH) by ICAO Annex 10, Volume III. Every aircraft registered in Thailand 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 7 distinct

Callsign Airline Flights Last seen
MJJ921 - 9 2026-05-21
MJJ991 - 8 2026-05-20
MJJ951 - 6 2026-05-26
MJJ931 - 5 2026-05-15
MJJ922 - 2 2026-05-16
MJJ992 - 1 2026-05-20
HSSKS - 1 2026-05-19

Recent flights last 32

DateFlightRouteTakeoffLandingDuration
2026-05-26 MJJ951 - May 26, 04:15 UTCMay 26, 11:20 UTC7h 5m
2026-05-26 MJJ951 - May 26, 01:00 UTCMay 26, 01:34 UTC35m
2026-05-21 MJJ921 - May 21, 10:50 UTCMay 21, 11:20 UTC30m
2026-05-21 MJJ921 - May 21, 09:25 UTCMay 21, 09:50 UTC25m
2026-05-21 MJJ921 - May 21, 08:05 UTCMay 21, 08:35 UTC30m
2026-05-21 MJJ921 - May 21, 06:05 UTCMay 21, 06:20 UTC15m
2026-05-20 MJJ992 - May 20, 13:35 UTCMay 20, 14:05 UTC30m
2026-05-20 MJJ991 - May 20, 09:45 UTCMay 20, 12:50 UTC3h 5m
2026-05-19 MJJ921 - May 19, 09:05 UTCMay 19, 09:45 UTC40m
2026-05-19 HSSKS - May 19, 06:50 UTCMay 19, 07:20 UTC30m
2026-05-19 MJJ921 - May 19, 04:50 UTCMay 19, 05:20 UTC30m
2026-05-19 MJJ921 - May 19, 03:15 UTCMay 19, 03:45 UTC30m
2026-05-16 MJJ922 - May 16, 08:16 UTCMay 16, 08:36 UTC20m
2026-05-15 MJJ922 - May 15, 11:35 UTCMay 15, 12:00 UTC25m
2026-05-15 MJJ931 - May 15, 06:55 UTCMay 15, 09:50 UTC2h 55m
2026-05-14 MJJ931 - May 14, 10:50 UTCMay 15, 09:50 UTC23h 0m
2026-05-14 MJJ931 - May 14, 08:50 UTCMay 15, 07:45 UTC22h 55m
2026-05-14 MJJ931 - May 14, 08:40 UTCMay 14, 10:50 UTC2h 10m
2026-05-14 MJJ931 - May 14, 06:45 UTCMay 14, 07:35 UTC50m
2026-05-13 MJJ921 - May 13, 08:00 UTCMay 13, 08:50 UTC50m
2026-05-13 MJJ921 - May 13, 06:40 UTCMay 13, 07:20 UTC40m
2026-04-18 MJJ951 - Apr 18, 09:20 UTCApr 18, 09:50 UTC30m
2026-04-18 MJJ951 - Apr 18, 06:15 UTCApr 18, 06:50 UTC35m
2026-04-18 MJJ951 - Apr 18, 03:30 UTCApr 18, 03:55 UTC25m
2026-04-18 MJJ951 - Apr 18, 00:40 UTCApr 18, 00:55 UTC15m
2026-04-17 MJJ991 - Apr 17, 23:25 UTCApr 17, 23:35 UTC10m
2026-04-17 MJJ991 - Apr 17, 21:30 UTCApr 17, 23:20 UTC1h 50m
2026-04-17 MJJ991 - Apr 17, 17:35 UTCApr 17, 18:35 UTC1h 0m
2026-04-17 MJJ991 - Apr 17, 13:25 UTCApr 17, 13:45 UTC20m
2026-04-17 MJJ991 - Apr 17, 11:20 UTCApr 17, 13:05 UTC1h 45m
2026-04-17 MJJ991 - Apr 17, 10:35 UTCApr 17, 11:15 UTC40m
2026-04-12 MJJ991 - Apr 12, 17:50 UTCApr 12, 20:15 UTC2h 25m

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 HS-SKS page for operator, model, and routing details .

Mode-S 884D73 frequently asked

What is Mode-S code 884D73?
884D73 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-SKS.
Where is Mode-S 884D73 registered?
Mode-S code 884D73 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 884D73 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 884D73, octal 42046563, decimal 8,932,723.
What flights does 884D73 operate?
Mode-S 884D73 has broadcast 7 distinct callsigns, including MJJ921, MJJ991, MJJ951, MJJ931, MJJ922.