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sensors Mode-S transponder

40793D

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-DAAS · AIRBUS HELICOPTERS EC-145

Hex
40793D
Octal
20074475
Decimal
4,225,341
Country
GB
Tail
G-DAAS
Type
EC45
No current signal · last broadcast Jul 25, 15:20 UTC
Flights observed
203
Distinct callsigns
2
Country
GB
Last broadcast
Jul 25, 15:20 UTC

Last known position

Most recent position reported by Mode-S 40793D.

Country allocation

The ICAO 24-bit address 40793D 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 2 distinct

Callsign Airline Flights Last seen
HLE70 - 190 2026-07-25
GDAAS - 13 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 HLE70 - Jul 25, 14:35 UTCJul 25, 15:20 UTC45m
2026-07-24 HLE70 - Jul 24, 21:05 UTCJul 24, 21:35 UTC30m
2026-07-24 HLE70 - Jul 24, 20:05 UTCJul 24, 20:30 UTC25m
2026-07-24 HLE70 - Jul 24, 18:05 UTCJul 24, 18:15 UTC10m
2026-07-24 HLE70 - Jul 24, 17:20 UTCJul 24, 17:30 UTC10m
2026-07-23 HLE70 - Jul 23, 10:35 UTCJul 23, 10:50 UTC15m
2026-07-22 HLE70 - Jul 22, 23:20 UTCJul 22, 23:30 UTC10m
2026-07-22 HLE70 - Jul 22, 22:00 UTCJul 22, 22:50 UTC50m
2026-07-22 HLE70 - Jul 22, 18:25 UTCJul 22, 18:40 UTC15m
2026-07-22 HLE70 - Jul 22, 13:25 UTCJul 22, 13:40 UTC15m
2026-07-21 HLE70 - Jul 21, 20:25 UTCJul 21, 22:00 UTC1h 35m
2026-07-21 HLE70 - Jul 21, 19:40 UTCJul 21, 19:50 UTC10m
2026-07-21 HLE70 - Jul 21, 15:20 UTCJul 21, 15:30 UTC10m
2026-07-21 HLE70 - Jul 21, 14:35 UTCJul 21, 14:45 UTC10m
2026-07-21 HLE70 - Jul 21, 13:05 UTCJul 21, 13:40 UTC35m
2026-07-21 HLE70 - Jul 21, 12:05 UTCJul 21, 12:35 UTC30m
2026-07-20 HLE70 - Jul 20, 21:55 UTCJul 20, 23:00 UTC1h 5m
2026-07-20 HLE70 - Jul 20, 20:10 UTCJul 20, 20:25 UTC15m
2026-07-20 HLE70 - Jul 20, 18:10 UTCJul 20, 19:35 UTC1h 25m
2026-07-20 HLE70 - Jul 20, 07:55 UTCJul 20, 08:35 UTC40m
2026-07-20 HLE70 - Jul 20, 07:20 UTCJul 20, 07:35 UTC15m
2026-07-19 HLE70 - Jul 19, 21:25 UTCJul 19, 21:50 UTC25m
2026-07-19 HLE70 - Jul 19, 15:50 UTCJul 19, 16:35 UTC45m
2026-07-19 HLE70 - Jul 19, 14:25 UTCJul 19, 14:40 UTC15m
2026-07-19 HLE70 - Jul 19, 11:55 UTCJul 19, 12:05 UTC10m
2026-07-19 HLE70 - Jul 19, 11:15 UTCJul 19, 11:25 UTC10m
2026-07-19 HLE70 - Jul 19, 10:30 UTCJul 19, 10:40 UTC10m
2026-07-18 HLE70 - Jul 18, 22:25 UTCJul 18, 22:35 UTC10m
2026-07-18 HLE70 - Jul 18, 21:00 UTCJul 18, 21:20 UTC20m
2026-07-18 HLE70 - Jul 18, 19:55 UTCJul 18, 20:20 UTC25m
2026-07-17 HLE70 - Jul 17, 22:20 UTCJul 17, 23:30 UTC1h 10m
2026-07-17 HLE70 - Jul 17, 18:34 UTCJul 17, 18:44 UTC10m
2026-07-16 HLE70 - Jul 16, 20:19 UTCJul 16, 20:29 UTC10m
2026-07-16 HLE70 - Jul 16, 19:14 UTCJul 16, 19:30 UTC15m
2026-07-16 HLE70 - Jul 16, 17:20 UTCJul 16, 17:40 UTC20m
2026-07-16 HLE70 - Jul 16, 16:25 UTCJul 16, 16:35 UTC10m
2026-07-16 HLE70 - Jul 16, 14:45 UTCJul 16, 15:35 UTC50m
2026-07-16 HLE70 - Jul 16, 13:49 UTCJul 16, 14:10 UTC20m
2026-07-16 HLE70 - Jul 16, 12:49 UTCJul 16, 13:00 UTC10m
2026-07-15 HLE70 EXT → EXT Jul 15, 22:00 UTCJul 15, 23:10 UTC1h 10m
2026-07-15 HLE70 - Jul 15, 20:35 UTCJul 15, 21:10 UTC35m
2026-07-15 HLE70 - Jul 15, 18:45 UTCJul 15, 19:25 UTC40m
2026-07-15 HLE70 - Jul 15, 17:25 UTCJul 15, 18:25 UTC1h 0m
2026-07-15 HLE70 - Jul 15, 16:30 UTCJul 15, 16:40 UTC10m
2026-07-15 HLE70 - Jul 15, 15:20 UTCJul 15, 15:45 UTC25m
2026-07-15 HLE70 - Jul 15, 12:15 UTCJul 15, 12:30 UTC15m
2026-07-15 HLE70 - Jul 15, 11:15 UTCJul 15, 11:40 UTC25m
2026-07-15 HLE70 - Jul 15, 10:05 UTCJul 15, 10:15 UTC10m
2026-07-15 HLE70 - Jul 15, 08:40 UTCJul 15, 08:55 UTC15m
2026-07-14 HLE70 - Jul 14, 18:20 UTCJul 14, 18:40 UTC20m

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

Mode-S 40793D frequently asked

What is Mode-S code 40793D?
40793D is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-DAAS.
Where is Mode-S 40793D registered?
Mode-S code 40793D 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 40793D broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 15:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40793D, octal 20074475, decimal 4,225,341.
What flights does 40793D operate?
Mode-S 40793D has broadcast 2 distinct callsigns, including HLE70, GDAAS.