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sensors Mode-S transponder

400DC2

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-SASC · BEECH 200 Super King Air

Hex
400DC2
Octal
20006702
Decimal
4,197,826
Country
GB
Tail
G-SASC
Type
BE20
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
319
Distinct callsigns
6
Country
GB
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 400DC2.

Country allocation

The ICAO 24-bit address 400DC2 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom 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 6 distinct

Callsign Airline Flights Last seen
GMA03 - 160 2026-07-26
GMA03B - 104 2026-07-26
GMA03C - 49 2026-07-26
GMA101T - 2 2026-06-08
GMA03P - 2 2026-07-22
GMA03D - 2 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GMA03C - Jul 26, 21:10 UTCJul 26, 21:40 UTC30m
2026-07-26 GMA03C - Jul 26, 19:35 UTCJul 26, 20:00 UTC25m
2026-07-26 GMA03B - Jul 26, 17:50 UTCJul 26, 18:15 UTC25m
2026-07-26 GMA03B - Jul 26, 14:30 UTCJul 26, 15:00 UTC30m
2026-07-26 GMA03 - Jul 26, 12:20 UTCJul 26, 12:45 UTC25m
2026-07-26 GMA03 - Jul 26, 10:20 UTCJul 26, 10:50 UTC30m
2026-07-26 GMA03C EDI → ABZ Jul 26, 02:35 UTCJul 26, 03:00 UTC25m
2026-07-26 GMA03C ABZ → EDI Jul 26, 01:15 UTCJul 26, 01:45 UTC30m
2026-07-25 GMA03B GLA → ABZ Jul 25, 21:45 UTCJul 25, 22:20 UTC35m
2026-07-25 GMA03B - Jul 25, 19:55 UTCJul 25, 20:25 UTC30m
2026-07-25 GMA03B - Jul 25, 18:50 UTCJul 25, 19:15 UTC25m
2026-07-25 GMA03 - Jul 25, 14:15 UTCJul 25, 14:40 UTC25m
2026-07-25 GMA03 - Jul 25, 12:25 UTCJul 25, 12:55 UTC30m
2026-07-25 GMA03C - Jul 25, 01:00 UTCJul 25, 01:30 UTC30m
2026-07-24 GMA03C - Jul 24, 23:50 UTCJul 25, 00:20 UTC30m
2026-07-24 GMA03B - Jul 24, 22:10 UTCJul 24, 22:35 UTC25m
2026-07-24 GMA03B - Jul 24, 19:25 UTCJul 24, 19:55 UTC30m
2026-07-24 GMA03 - Jul 24, 16:50 UTCJul 24, 17:15 UTC25m
2026-07-24 GMA03 - Jul 24, 12:15 UTCJul 24, 12:50 UTC35m
2026-07-23 GMA03B - Jul 23, 15:05 UTCJul 23, 15:35 UTC30m
2026-07-23 GMA03B - Jul 23, 08:30 UTCJul 23, 09:05 UTC35m
2026-07-23 GMA03 GLA → ABZ Jul 23, 05:00 UTCJul 23, 05:35 UTC35m
2026-07-22 GMA03C - Jul 22, 20:25 UTCJul 22, 21:15 UTC50m
2026-07-22 GMA03C - Jul 22, 18:35 UTCJul 22, 19:10 UTC35m
2026-07-22 GMA03B - Jul 22, 14:15 UTCJul 22, 14:40 UTC25m
2026-07-22 GMA03B - Jul 22, 12:35 UTCJul 22, 13:05 UTC30m
2026-07-22 GMA03P - Jul 22, 05:20 UTCJul 22, 05:25 UTC5m
2026-07-21 GMA03 - Jul 21, 23:25 UTCJul 21, 23:55 UTC30m
2026-07-21 GMA03 - Jul 21, 22:00 UTCJul 21, 22:35 UTC35m
2026-07-21 GMA03P - Jul 21, 20:25 UTCJul 21, 20:55 UTC30m
2026-07-21 GMA03C - Jul 21, 06:00 UTCJul 21, 06:20 UTC20m
2026-07-21 GMA03C - Jul 21, 00:45 UTCJul 21, 01:05 UTC20m
2026-07-20 GMA03C - Jul 20, 23:05 UTCJul 20, 23:30 UTC25m
2026-07-20 GMA03C - Jul 20, 19:20 UTCJul 20, 19:55 UTC35m
2026-07-20 GMA03B - Jul 20, 16:55 UTCJul 20, 17:20 UTC25m
2026-07-20 GMA03B - Jul 20, 15:15 UTCJul 20, 15:45 UTC30m
2026-07-20 GMA03 - Jul 20, 11:50 UTCJul 20, 12:15 UTC25m
2026-07-20 GMA03 - Jul 20, 08:45 UTCJul 20, 09:20 UTC35m
2026-07-19 GMA03B - Jul 19, 13:35 UTCJul 19, 14:05 UTC30m
2026-07-19 GMA03B - Jul 19, 11:45 UTCJul 19, 12:15 UTC30m
2026-07-19 GMA03 - Jul 19, 07:45 UTCJul 19, 09:15 UTC1h 30m
2026-07-18 GMA03C - Jul 18, 20:15 UTCJul 18, 20:45 UTC30m
2026-07-18 GMA03C - Jul 18, 19:10 UTCJul 18, 19:40 UTC30m
2026-07-18 GMA03B - Jul 18, 15:35 UTCJul 18, 16:10 UTC35m
2026-07-18 GMA03B - Jul 18, 14:30 UTCJul 18, 15:05 UTC35m
2026-07-18 GMA03 - Jul 18, 10:25 UTCJul 18, 11:00 UTC35m
2026-07-18 GMA03 - Jul 18, 08:25 UTCJul 18, 09:00 UTC35m
2026-07-17 GMA03B - Jul 17, 20:04 UTCJul 17, 20:40 UTC35m
2026-07-17 GMA03B - Jul 17, 19:00 UTCJul 17, 19:30 UTC30m
2026-07-17 GMA03 GLA → ABZ Jul 17, 16:29 UTCJul 17, 17:05 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 G-SASC page for operator, model, and routing details .

Mode-S 400DC2 frequently asked

What is Mode-S code 400DC2?
400DC2 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-SASC.
Where is Mode-S 400DC2 registered?
Mode-S code 400DC2 is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 400DC2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400DC2, octal 20006702, decimal 4,197,826.
What flights does 400DC2 operate?
Mode-S 400DC2 has broadcast 6 distinct callsigns, including GMA03, GMA03B, GMA03C, GMA101T, GMA03P.