Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

407B1E

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-CLWB · PIPER PA-28-140/150/160/180

Hex
407B1E
Octal
20075436
Decimal
4,225,822
Country
GB
Tail
G-CLWB
Type
P28A
No current signal · last broadcast Jul 26, 14:30 UTC
Flights observed
312
Distinct callsigns
1
Country
GB
Last broadcast
Jul 26, 14:30 UTC

Last known position

Most recent position reported by Mode-S 407B1E.

Country allocation

The ICAO 24-bit address 407B1E 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
GCLWB - 312 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GCLWB - Jul 26, 13:55 UTCJul 26, 14:30 UTC35m
2026-07-26 GCLWB - Jul 26, 12:55 UTCJul 26, 13:25 UTC30m
2026-07-26 GCLWB - Jul 26, 10:05 UTCJul 26, 10:45 UTC40m
2026-07-26 GCLWB NWI → NWI Jul 26, 07:35 UTCJul 26, 08:20 UTC45m
2026-07-25 GCLWB - Jul 25, 17:00 UTCJul 25, 17:40 UTC40m
2026-07-25 GCLWB - Jul 25, 14:50 UTCJul 25, 15:40 UTC50m
2026-07-25 GCLWB NWI → NWI Jul 25, 12:25 UTCJul 25, 13:15 UTC50m
2026-07-25 GCLWB - Jul 25, 11:00 UTCJul 25, 11:40 UTC40m
2026-07-25 GCLWB - Jul 25, 10:25 UTCJul 25, 10:40 UTC15m
2026-07-25 GCLWB - Jul 25, 08:40 UTCJul 25, 09:20 UTC40m
2026-07-24 GCLWB - Jul 24, 17:20 UTCJul 24, 18:05 UTC45m
2026-07-24 GCLWB - Jul 24, 12:25 UTCJul 24, 13:00 UTC35m
2026-07-24 GCLWB - Jul 24, 10:35 UTCJul 24, 11:15 UTC40m
2026-07-24 GCLWB - Jul 24, 08:55 UTCJul 24, 09:40 UTC45m
2026-07-23 GCLWB - Jul 23, 17:10 UTCJul 23, 18:05 UTC55m
2026-07-23 GCLWB - Jul 23, 12:40 UTCJul 23, 13:40 UTC1h 0m
2026-07-23 GCLWB - Jul 23, 09:50 UTCJul 23, 10:40 UTC50m
2026-07-23 GCLWB NWI → NWI Jul 23, 08:20 UTCJul 23, 09:10 UTC50m
2026-07-22 GCLWB - Jul 22, 16:10 UTCJul 22, 17:15 UTC1h 5m
2026-07-22 GCLWB - Jul 22, 14:00 UTCJul 22, 15:15 UTC1h 15m
2026-07-22 GCLWB - Jul 22, 12:10 UTCJul 22, 12:55 UTC45m
2026-07-21 GCLWB - Jul 21, 09:10 UTCJul 21, 10:50 UTC1h 40m
2026-07-19 GCLWB - Jul 19, 13:50 UTCJul 19, 14:35 UTC45m
2026-07-19 GCLWB - Jul 19, 12:20 UTCJul 19, 13:10 UTC50m
2026-07-19 GCLWB - Jul 19, 10:10 UTCJul 19, 10:55 UTC45m
2026-07-19 GCLWB - Jul 19, 08:25 UTCJul 19, 09:20 UTC55m
2026-07-18 GCLWB - Jul 18, 12:15 UTCJul 18, 14:05 UTC1h 50m
2026-07-18 GCLWB NWI → NWI Jul 18, 08:30 UTCJul 18, 09:15 UTC45m
2026-07-17 GCLWB - Jul 17, 12:25 UTCJul 17, 12:50 UTC25m
2026-07-17 GCLWB NWI → NWI Jul 17, 08:54 UTCJul 17, 09:45 UTC50m
2026-07-16 GCLWB - Jul 16, 16:49 UTCJul 16, 17:40 UTC50m
2026-07-16 GCLWB - Jul 16, 14:45 UTCJul 16, 15:35 UTC50m
2026-07-16 GCLWB NWI → NWI Jul 16, 12:44 UTCJul 16, 13:25 UTC40m
2026-07-16 GCLWB - Jul 16, 10:40 UTCJul 16, 11:30 UTC50m
2026-07-16 GCLWB - Jul 16, 09:40 UTCJul 16, 09:50 UTC10m
2026-07-15 GCLWB - Jul 15, 10:35 UTCJul 15, 10:50 UTC15m
2026-07-14 GCLWB NWI → NWI Jul 14, 18:45 UTCJul 14, 20:00 UTC1h 15m
2026-07-14 GCLWB - Jul 14, 17:15 UTCJul 14, 17:45 UTC30m
2026-07-14 GCLWB NWI → NWI Jul 14, 15:00 UTCJul 14, 16:00 UTC1h 0m
2026-07-14 GCLWB NWI → NWI Jul 14, 13:00 UTCJul 14, 14:05 UTC1h 5m
2026-07-14 GCLWB - Jul 14, 11:20 UTCJul 14, 12:15 UTC55m
2026-07-12 GCLWB NWI → NWI Jul 12, 18:05 UTCJul 12, 18:50 UTC45m
2026-07-12 GCLWB NWI → NWI Jul 12, 14:25 UTCJul 12, 15:20 UTC55m
2026-07-12 GCLWB - Jul 12, 12:15 UTCJul 12, 13:15 UTC1h 0m
2026-07-12 GCLWB NWI → NWI Jul 12, 10:20 UTCJul 12, 11:10 UTC50m
2026-07-12 GCLWB NWI → NWI Jul 12, 07:40 UTCJul 12, 08:25 UTC45m
2026-07-11 GCLWB - Jul 11, 17:20 UTCJul 11, 20:35 UTC3h 15m
2026-07-11 GCLWB - Jul 11, 15:20 UTCJul 11, 16:45 UTC1h 25m
2026-07-11 GCLWB - Jul 11, 13:05 UTCJul 11, 14:25 UTC1h 20m
2026-07-10 GCLWB - Jul 10, 15:25 UTCJul 10, 16:20 UTC55m

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

Mode-S 407B1E frequently asked

What is Mode-S code 407B1E?
407B1E is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-CLWB.
Where is Mode-S 407B1E registered?
Mode-S code 407B1E 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 407B1E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407B1E, octal 20075436, decimal 4,225,822.
What flights does 407B1E operate?
Mode-S 407B1E has broadcast 1 distinct callsign, including GCLWB.