Apparatus

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sensors Mode-S transponder

407937

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-LHXB · DIAMOND DA-42 Guardian

Hex
407937
Octal
20074467
Decimal
4,225,335
Country
GB
Tail
G-LHXB
Type
DA42
No current signal · last broadcast 11h ago
Flights observed
112
Distinct callsigns
6
Country
GB
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 407937.

Country allocation

The ICAO 24-bit address 407937 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
AFZ35Y - 59 2026-07-17
AFT35Y - 26 2026-06-12
GLHXB - 9 2026-05-15
EXAM26 - 9 2026-07-10
EXM26 - 6 2026-06-13
EXM91 - 3 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 AFZ35Y - Jul 17, 09:35 UTCJul 17, 11:25 UTC1h 50m
2026-07-16 AFZ35Y - Jul 16, 14:10 UTCJul 16, 14:35 UTC25m
2026-07-16 AFZ35Y EXT → EXT Jul 16, 12:25 UTCJul 16, 13:40 UTC1h 15m
2026-07-16 AFZ35Y EXT → EXT Jul 16, 10:00 UTCJul 16, 11:45 UTC1h 45m
2026-07-15 AFZ35Y - Jul 15, 15:35 UTCJul 15, 16:20 UTC45m
2026-07-15 AFZ35Y EXT → EXT Jul 15, 12:05 UTCJul 15, 14:20 UTC2h 15m
2026-07-15 AFZ35Y - Jul 15, 09:00 UTCJul 15, 11:00 UTC2h 0m
2026-07-14 AFZ35Y - Jul 14, 15:05 UTCJul 14, 17:05 UTC2h 0m
2026-07-14 AFZ35Y - Jul 14, 12:20 UTCJul 14, 14:00 UTC1h 40m
2026-07-14 AFZ35Y - Jul 14, 08:55 UTCJul 14, 11:30 UTC2h 35m
2026-07-13 AFZ35Y - Jul 13, 12:50 UTCJul 13, 14:45 UTC1h 55m
2026-07-13 AFZ35Y - Jul 13, 08:55 UTCJul 13, 11:20 UTC2h 25m
2026-07-10 EXAM26 - Jul 10, 13:10 UTCJul 10, 14:40 UTC1h 30m
2026-07-10 EXAM26 - Jul 10, 10:25 UTCJul 10, 11:50 UTC1h 25m
2026-07-10 EXAM26 EXT → EXT Jul 10, 08:30 UTCJul 10, 09:00 UTC30m
2026-07-09 AFZ35Y - Jul 9, 12:05 UTCJul 9, 13:55 UTC1h 50m
2026-07-09 AFZ35Y - Jul 9, 08:40 UTCJul 9, 10:55 UTC2h 15m
2026-07-08 AFZ35Y - Jul 8, 12:00 UTCJul 8, 14:25 UTC2h 25m
2026-07-08 AFZ35Y - Jul 8, 08:40 UTCJul 8, 10:55 UTC2h 15m
2026-07-07 AFZ35Y OXF → EXT Jul 7, 16:20 UTCJul 7, 17:05 UTC45m
2026-06-26 AFZ35Y - Jun 26, 14:50 UTCJun 26, 15:34 UTC45m
2026-06-26 EXAM26 EXT → EXT Jun 26, 11:45 UTCJun 26, 13:04 UTC1h 20m
2026-06-26 EXAM26 - Jun 26, 08:50 UTCJun 26, 10:15 UTC1h 25m
2026-06-24 AFZ35Y - Jun 24, 11:34 UTCJun 24, 13:44 UTC2h 10m
2026-06-24 AFZ35Y - Jun 24, 08:45 UTCJun 24, 10:39 UTC1h 55m
2026-06-23 AFZ35Y - Jun 23, 10:10 UTCJun 23, 12:25 UTC2h 15m
2026-06-19 EXAM26 - Jun 19, 08:54 UTCJun 19, 10:09 UTC1h 15m
2026-06-19 EXAM26 - Jun 19, 07:14 UTCJun 19, 07:39 UTC25m
2026-06-18 AFZ35Y - Jun 18, 15:35 UTCJun 18, 16:40 UTC1h 5m
2026-06-18 EXAM26 - Jun 18, 12:05 UTCJun 18, 13:50 UTC1h 45m
2026-06-18 EXAM26 - Jun 18, 08:50 UTCJun 18, 10:30 UTC1h 40m
2026-06-17 AFZ35Y EXT → EXT Jun 17, 14:35 UTCJun 17, 16:10 UTC1h 35m
2026-06-17 AFZ35Y EXT → EXT Jun 17, 11:50 UTCJun 17, 13:50 UTC2h 0m
2026-06-17 AFZ35Y - Jun 17, 08:30 UTCJun 17, 11:05 UTC2h 35m
2026-06-16 AFZ35Y - Jun 16, 14:25 UTCJun 16, 16:15 UTC1h 50m
2026-06-16 AFZ35Y - Jun 16, 11:35 UTCJun 16, 13:19 UTC1h 45m
2026-06-16 AFZ35Y - Jun 16, 08:49 UTCJun 16, 10:55 UTC2h 5m
2026-06-15 AFZ35Y - Jun 15, 15:00 UTCJun 15, 17:15 UTC2h 15m
2026-06-15 AFZ35Y - Jun 15, 11:45 UTCJun 15, 14:05 UTC2h 20m
2026-06-15 AFZ35Y - Jun 15, 08:29 UTCJun 15, 10:55 UTC2h 25m
2026-06-13 EXM26 - Jun 13, 09:35 UTCJun 13, 11:00 UTC1h 25m
2026-06-13 EXM26 - Jun 13, 07:45 UTCJun 13, 07:55 UTC10m
2026-06-12 AFT35Y - Jun 12, 12:30 UTCJun 12, 14:15 UTC1h 45m
2026-06-12 AFT35Y - Jun 12, 09:00 UTCJun 12, 10:50 UTC1h 50m
2026-06-11 AFT35Y - Jun 11, 14:25 UTCJun 11, 16:10 UTC1h 45m
2026-06-11 AFT35Y - Jun 11, 11:15 UTCJun 11, 13:00 UTC1h 45m
2026-06-11 AFT35Y - Jun 11, 08:45 UTCJun 11, 09:10 UTC25m
2026-06-10 AFT35Y - Jun 10, 11:10 UTCJun 10, 11:55 UTC45m
2026-06-10 AFT35Y - Jun 10, 08:45 UTCJun 10, 09:30 UTC45m
2026-06-09 AFT35Y - Jun 9, 14:25 UTCJun 9, 15:50 UTC1h 25m

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

Mode-S 407937 frequently asked

What is Mode-S code 407937?
407937 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LHXB.
Where is Mode-S 407937 registered?
Mode-S code 407937 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 407937 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407937, octal 20074467, decimal 4,225,335.
What flights does 407937 operate?
Mode-S 407937 has broadcast 6 distinct callsigns, including AFZ35Y, AFT35Y, GLHXB, EXAM26, EXM26.