Apparatus

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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 1h ago
Flights observed
234
Distinct callsigns
20
Country
GB
Last broadcast
1h 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 20 distinct

Callsign Airline Flights Last seen
AUR31J - 10 2026-07-13
AUR30J - 10 2026-07-13
AUR41LC - 9 2026-07-13
AUR40LC - 9 2026-07-13
AUR601Y - 8 2026-07-13
AUR600A - 7 2026-07-13
AUR39J - 7 2026-07-13
AUR38J - 7 2026-07-13
AUR611Y - 6 2026-07-12
AUR610A - 6 2026-07-12
AUR59H - 6 2026-07-11
AUR58H - 6 2026-07-11
AUR44D - 6 2026-06-22
AUR87DB - 5 2026-07-07
AUR71B - 5 2026-07-08
AUR70B - 5 2026-07-08
AUR681 - 5 2026-07-10
AUR680 - 5 2026-07-10
AUR607Y - 5 2026-07-12
AUR606A - 5 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AUR2BM - Jul 14, 09:50 UTCJul 14, 10:30 UTC40m
2026-07-14 AUR401 LCY → GCI Jul 14, 07:30 UTCJul 14, 08:40 UTC1h 10m
2026-07-14 AUR400 GCI → LCY Jul 14, 05:40 UTCJul 14, 06:45 UTC1h 5m
2026-07-13 AUR41LC LCY → GCI Jul 13, 20:25 UTCJul 13, 21:25 UTC1h 0m
2026-07-13 AUR40LC - Jul 13, 18:40 UTCJul 13, 19:40 UTC1h 0m
2026-07-13 AUR39J JER → GCI Jul 13, 16:50 UTCJul 13, 17:05 UTC15m
2026-07-13 AUR38J GCI → JER Jul 13, 15:45 UTCJul 13, 16:00 UTC15m
2026-07-13 AUR57H SOU → GCI Jul 13, 13:35 UTCJul 13, 14:15 UTC40m
2026-07-13 AUR56H - Jul 13, 12:15 UTCJul 13, 12:45 UTC30m
2026-07-13 AUR31J - Jul 13, 10:55 UTCJul 13, 11:05 UTC10m
2026-07-13 AUR30J - Jul 13, 09:35 UTCJul 13, 10:10 UTC35m
2026-07-13 AUR601Y LGW → GCI Jul 13, 08:01 UTCJul 13, 08:50 UTC50m
2026-07-13 AUR600A - Jul 13, 06:20 UTCJul 13, 07:05 UTC45m
2026-07-12 AUR611Y LGW → GCI Jul 12, 19:30 UTCJul 12, 20:20 UTC50m
2026-07-12 AUR610A - Jul 12, 17:35 UTCJul 12, 18:40 UTC1h 5m
2026-07-12 AUR607Y LGW → GCI Jul 12, 16:01 UTCJul 12, 16:45 UTC45m
2026-07-12 AUR606A - Jul 12, 13:50 UTCJul 12, 14:45 UTC55m
2026-07-12 AUR43D BRS → GCI Jul 12, 12:15 UTCJul 12, 12:55 UTC40m
2026-07-12 AUR42D - Jul 12, 10:40 UTCJul 12, 11:20 UTC40m
2026-07-12 AUR55H - Jul 12, 09:05 UTCJul 12, 09:40 UTC35m
2026-07-12 AUR54H - Jul 12, 07:50 UTCJul 12, 08:20 UTC30m
2026-07-11 AUR59H - Jul 11, 18:50 UTCJul 11, 19:25 UTC35m
2026-07-11 AUR58H - Jul 11, 17:40 UTCJul 11, 18:10 UTC30m
2026-07-11 AUR39J JER → GCI Jul 11, 16:45 UTCJul 11, 17:00 UTC15m
2026-07-11 AUR38J GCI → JER Jul 11, 15:55 UTCJul 11, 16:05 UTC10m
2026-07-11 AUR665L LBA → GCI Jul 11, 13:45 UTCJul 11, 15:00 UTC1h 15m
2026-07-11 AUR664L GCI → LBA Jul 11, 11:10 UTCJul 11, 12:30 UTC1h 20m
2026-07-11 AUR2729 EXT → GCI Jul 11, 09:50 UTCJul 11, 10:20 UTC30m
2026-07-10 AUR8ET GCI → EXT Jul 10, 13:50 UTCJul 10, 14:25 UTC35m
2026-07-10 AUR681 - Jul 10, 11:20 UTCJul 10, 12:20 UTC1h 0m
2026-07-10 AUR680 GCI → CDG Jul 10, 08:45 UTCJul 10, 09:40 UTC55m
2026-07-10 AUR31J - Jul 10, 07:20 UTCJul 10, 07:30 UTC10m
2026-07-10 AUR30J GCI → JER Jul 10, 06:20 UTCJul 10, 06:30 UTC10m
2026-07-09 AUR79B MAN → GCI Jul 9, 18:20 UTCJul 9, 19:30 UTC1h 10m
2026-07-09 AUR78B GCI → MAN Jul 9, 15:50 UTCJul 9, 17:05 UTC1h 15m
2026-07-09 AUR57H SOU → GCI Jul 9, 14:20 UTCJul 9, 14:50 UTC30m
2026-07-09 AUR56H GCI → SOU Jul 9, 13:05 UTCJul 9, 13:40 UTC35m
2026-07-09 AUR605Y - Jul 9, 11:20 UTCJul 9, 12:05 UTC45m
2026-07-09 AUR604A GCI → LGW Jul 9, 09:40 UTCJul 9, 10:30 UTC50m
2026-07-09 AUR601Y LGW → GCI Jul 9, 08:05 UTCJul 9, 08:50 UTC45m
2026-07-09 AUR600A GCI → LGW Jul 9, 06:00 UTCJul 9, 06:55 UTC55m
2026-07-08 AUR41LC LCY → GCI Jul 8, 18:55 UTCJul 8, 19:50 UTC55m
2026-07-08 AUR40LC GCI → LCY Jul 8, 17:05 UTCJul 8, 18:10 UTC1h 5m
2026-07-08 AUR71B MAN → GCI Jul 8, 14:30 UTCJul 8, 15:35 UTC1h 5m
2026-07-08 AUR70B GCI → MAN Jul 8, 12:10 UTCJul 8, 13:30 UTC1h 20m
2026-07-08 AUR3LG LGW → GCI Jul 8, 10:40 UTCJul 8, 11:20 UTC40m
2026-07-08 AUR2LG GCI → LGW Jul 8, 08:35 UTCJul 8, 09:15 UTC40m
2026-07-08 AUR51H SOU → GCI Jul 8, 07:10 UTCJul 8, 07:45 UTC35m
2026-07-08 AUR50H GCI → SOU Jul 8, 06:00 UTCJul 8, 06:30 UTC30m
2026-07-07 AUR87DB - Jul 7, 11:40 UTCJul 7, 12:55 UTC1h 15m

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 1h 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 20 distinct callsigns, including AUR31J, AUR30J, AUR41LC, AUR40LC, AUR601Y.