sensors Mode-S transponder

40814A

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-PEMB · ATR-72-600

Hex
40814A
Octal
20100512
Decimal
4,227,402
Country
GB
Tail
G-PEMB
Type
AT76
No current signal · last broadcast 15h ago
Flights observed
14
Distinct callsigns
13
Country
GB
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 40814A.

Country allocation

The ICAO 24-bit address 40814A 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 13 distinct

Callsign Airline Flights Last seen
AUR607Y - 2 2026-04-13
AUR71B - 1 2026-04-13
AUR70B Aurigny Air Services 1 2026-04-13
AUR611Y - 1 2026-04-13
AUR610A - 1 2026-04-13
AUR606A - 1 2026-04-13
AUR59H - 1 2026-04-12
AUR58H - 1 2026-04-12
AUR57H - 1 2026-04-13
AUR56H - 1 2026-04-13
AUR401 - 1 2026-04-14
AUR400 - 1 2026-04-14
AUR2BM - 1 2026-04-14

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 AUR2BM GCI → BHX Apr 14, 09:55 UTCApr 14, 10:55 UTC1h 0m
2026-04-14 AUR401 LCY → GCI Apr 14, 07:35 UTCApr 14, 08:40 UTC1h 5m
2026-04-14 AUR400 GCI → LCY Apr 14, 05:40 UTCApr 14, 06:45 UTC1h 5m
2026-04-13 AUR611Y LGW → GCI Apr 13, 18:45 UTCApr 13, 19:25 UTC40m
2026-04-13 AUR610A GCI → LGW Apr 13, 17:10 UTCApr 13, 17:55 UTC45m
2026-04-13 AUR607Y - Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 AUR607Y LGW → GCI Apr 13, 15:35 UTCApr 13, 16:15 UTC40m
2026-04-13 AUR606A GCI → LGW Apr 13, 13:55 UTCApr 13, 14:40 UTC45m
2026-04-13 AUR57H SOU → GCI Apr 13, 12:30 UTCApr 13, 13:05 UTC35m
2026-04-13 AUR56H GCI → SOU Apr 13, 11:15 UTCApr 13, 11:45 UTC30m
2026-04-13 AUR71B MAN → GCI Apr 13, 08:55 UTCApr 13, 10:05 UTC1h 10m
2026-04-13 AUR70B GCI → MAN Apr 13, 06:00 UTCApr 13, 07:10 UTC1h 10m
2026-04-12 AUR59H - Apr 12, 19:10 UTCApr 12, 19:40 UTC30m
2026-04-12 AUR58H - Apr 12, 17:50 UTCApr 12, 18:20 UTC30m

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

Mode-S 40814A frequently asked

What is Mode-S code 40814A?
40814A is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-PEMB.
Where is Mode-S 40814A registered?
Mode-S code 40814A 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 40814A broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40814A, octal 20100512, decimal 4,227,402.
What flights does 40814A operate?
Mode-S 40814A has broadcast 13 distinct callsigns, including AUR607Y, AUR71B, AUR70B, AUR611Y, AUR610A.