Apparatus

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sensors Mode-S transponder

40219E

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-DUVL · CESSNA 172 Skyhawk

Hex
40219E
Octal
20020636
Decimal
4,202,910
Country
GB
Tail
G-DUVL
Type
C172
No current signal · last broadcast 1d ago
Flights observed
100
Distinct callsigns
1
Country
GB
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 40219E.

Country allocation

The ICAO 24-bit address 40219E 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 1 distinct

Callsign Airline Flights Last seen
GDUVL - 100 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 GDUVL - Jul 12, 17:25 UTCJul 12, 18:05 UTC40m
2026-07-12 GDUVL - Jul 12, 10:10 UTCJul 12, 11:15 UTC1h 5m
2026-07-11 GDUVL - Jul 11, 14:35 UTCJul 11, 15:15 UTC40m
2026-07-11 GDUVL - Jul 11, 10:25 UTCJul 11, 11:05 UTC40m
2026-07-08 GDUVL - Jul 8, 11:20 UTCJul 8, 11:55 UTC35m
2026-07-08 GDUVL - Jul 8, 09:15 UTCJul 8, 09:55 UTC40m
2026-07-07 GDUVL - Jul 7, 11:10 UTCJul 7, 11:25 UTC15m
2026-07-07 GDUVL - Jul 7, 09:35 UTCJul 7, 10:00 UTC25m
2026-07-06 GDUVL - Jul 6, 10:40 UTCJul 6, 11:45 UTC1h 5m
2026-07-05 GDUVL - Jul 5, 13:15 UTCJul 5, 13:25 UTC10m
2026-07-05 GDUVL - Jul 5, 08:25 UTCJul 5, 09:30 UTC1h 5m
2026-07-04 GDUVL - Jul 4, 14:50 UTCJul 4, 15:45 UTC55m
2026-07-04 GDUVL - Jul 4, 11:40 UTCJul 4, 12:35 UTC55m
2026-07-03 GDUVL - Jul 3, 09:50 UTCJul 3, 10:15 UTC25m
2026-07-03 GDUVL - Jul 3, 08:35 UTCJul 3, 09:05 UTC30m
2026-07-02 GDUVL - Jul 2, 13:45 UTCJul 2, 14:20 UTC35m
2026-07-02 GDUVL - Jul 2, 10:10 UTCJul 2, 10:50 UTC40m
2026-07-01 GDUVL - Jul 1, 13:45 UTCJul 1, 14:45 UTC1h 0m
2026-07-01 GDUVL - Jul 1, 09:15 UTCJul 1, 10:15 UTC1h 0m
2026-06-28 GDUVL - Jun 28, 12:09 UTCJun 28, 12:29 UTC20m
2026-06-28 GDUVL - Jun 28, 11:00 UTCJun 28, 11:19 UTC20m
2026-06-27 GDUVL - Jun 27, 12:19 UTCJun 27, 12:50 UTC30m
2026-06-27 GDUVL - Jun 27, 10:19 UTCJun 27, 10:50 UTC30m
2026-06-23 GDUVL - Jun 23, 17:59 UTCJun 23, 18:20 UTC20m
2026-06-23 GDUVL - Jun 23, 10:15 UTCJun 23, 10:55 UTC40m
2026-06-21 GDUVL - Jun 21, 13:39 UTCJun 21, 14:19 UTC40m
2026-06-21 GDUVL - Jun 21, 09:29 UTCJun 21, 10:19 UTC50m
2026-06-19 GDUVL - Jun 19, 18:30 UTCJun 19, 19:09 UTC40m
2026-06-19 GDUVL - Jun 19, 14:59 UTCJun 19, 15:39 UTC40m
2026-06-18 GDUVL - Jun 18, 13:45 UTCJun 18, 14:25 UTC40m
2026-06-18 GDUVL - Jun 18, 11:25 UTCJun 18, 11:55 UTC30m
2026-06-16 GDUVL - Jun 16, 11:25 UTCJun 16, 11:40 UTC15m
2026-06-16 GDUVL - Jun 16, 09:50 UTCJun 16, 10:09 UTC20m
2026-06-14 GDUVL - Jun 14, 15:50 UTCJun 14, 16:45 UTC55m
2026-06-14 GDUVL - Jun 14, 08:05 UTCJun 14, 09:10 UTC1h 5m
2026-06-09 GDUVL - Jun 9, 13:05 UTCJun 9, 13:30 UTC25m
2026-06-09 GDUVL - Jun 9, 11:00 UTCJun 9, 11:40 UTC40m
2026-06-05 GDUVL - Jun 5, 10:45 UTCJun 5, 11:25 UTC40m
2026-06-05 GDUVL - Jun 5, 08:30 UTCJun 5, 09:20 UTC50m
2026-06-04 GDUVL - Jun 4, 14:40 UTCJun 4, 15:10 UTC30m
2026-06-04 GDUVL - Jun 4, 13:30 UTCJun 4, 13:55 UTC25m
2026-06-02 GDUVL - Jun 2, 11:40 UTCJun 2, 11:55 UTC15m
2026-06-02 GDUVL - Jun 2, 10:30 UTCJun 2, 10:35 UTC5m
2026-06-01 GDUVL - Jun 1, 12:50 UTCJun 1, 13:05 UTC15m
2026-06-01 GDUVL - Jun 1, 11:40 UTCJun 1, 12:00 UTC20m
2026-05-31 GDUVL - May 31, 14:30 UTCMay 31, 14:45 UTC15m
2026-05-31 GDUVL - May 31, 12:05 UTCMay 31, 12:30 UTC25m
2026-05-30 GDUVL - May 30, 14:10 UTCMay 30, 14:50 UTC40m
2026-05-30 GDUVL - May 30, 10:45 UTCMay 30, 11:25 UTC40m
2026-05-27 GDUVL - May 27, 17:30 UTCMay 27, 18:15 UTC45m

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

Mode-S 40219E frequently asked

What is Mode-S code 40219E?
40219E is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-DUVL.
Where is Mode-S 40219E registered?
Mode-S code 40219E 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 40219E broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40219E, octal 20020636, decimal 4,202,910.
What flights does 40219E operate?
Mode-S 40219E has broadcast 1 distinct callsign, including GDUVL.