Apparatus

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sensors Mode-S transponder

40798F

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-CLNA · CESSNA 152

Hex
40798F
Octal
20074617
Decimal
4,225,423
Country
GB
Tail
G-CLNA
Type
C152
No current signal · last broadcast 5h ago
Flights observed
176
Distinct callsigns
2
Country
GB
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 40798F.

Country allocation

The ICAO 24-bit address 40798F 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 2 distinct

Callsign Airline Flights Last seen
GCLNA - 174 2026-07-14
GORDM - 2 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GCLNA CBG → CBG Jul 14, 09:25 UTCJul 14, 10:10 UTC45m
2026-07-13 GCLNA - Jul 13, 14:15 UTCJul 13, 14:55 UTC40m
2026-07-13 GCLNA CBG → CBG Jul 13, 11:30 UTCJul 13, 12:30 UTC1h 0m
2026-07-12 GCLNA - Jul 12, 16:01 UTCJul 12, 17:15 UTC1h 15m
2026-07-12 GCLNA - Jul 12, 14:10 UTCJul 12, 15:05 UTC55m
2026-07-12 GCLNA CBG → CBG Jul 12, 11:40 UTCJul 12, 13:01 UTC1h 20m
2026-07-12 GCLNA CBG → CBG Jul 12, 10:40 UTCJul 12, 10:55 UTC15m
2026-07-12 GCLNA - Jul 12, 08:45 UTCJul 12, 09:30 UTC45m
2026-07-11 GCLNA - Jul 11, 13:20 UTCJul 11, 14:30 UTC1h 10m
2026-07-11 GCLNA - Jul 11, 11:10 UTCJul 11, 11:45 UTC35m
2026-07-10 GCLNA - Jul 10, 13:30 UTCJul 10, 14:20 UTC50m
2026-07-10 GCLNA - Jul 10, 11:05 UTCJul 10, 11:55 UTC50m
2026-07-10 GCLNA - Jul 10, 09:05 UTCJul 10, 09:45 UTC40m
2026-07-09 GCLNA - Jul 9, 13:50 UTCJul 9, 14:30 UTC40m
2026-07-09 GCLNA - Jul 9, 11:15 UTCJul 9, 11:50 UTC35m
2026-07-09 GCLNA - Jul 9, 09:05 UTCJul 9, 10:00 UTC55m
2026-07-08 GCLNA - Jul 8, 15:55 UTCJul 8, 16:50 UTC55m
2026-07-08 GCLNA CBG → CBG Jul 8, 11:15 UTCJul 8, 11:55 UTC40m
2026-07-08 GCLNA CBG → CBG Jul 8, 08:50 UTCJul 8, 09:40 UTC50m
2026-07-07 GCLNA - Jul 7, 14:35 UTCJul 7, 15:00 UTC25m
2026-07-07 GCLNA - Jul 7, 11:40 UTCJul 7, 12:30 UTC50m
2026-07-06 GCLNA CBG → CBG Jul 6, 10:30 UTCJul 6, 10:50 UTC20m
2026-07-04 GCLNA - Jul 4, 14:10 UTCJul 4, 14:45 UTC35m
2026-07-04 GCLNA CBG → CBG Jul 4, 11:40 UTCJul 4, 12:35 UTC55m
2026-07-04 GCLNA CBG → CBG Jul 4, 08:55 UTCJul 4, 09:45 UTC50m
2026-07-03 GCLNA CBG → CBG Jul 3, 16:10 UTCJul 3, 16:55 UTC45m
2026-07-03 GCLNA - Jul 3, 09:15 UTCJul 3, 09:55 UTC40m
2026-07-01 GCLNA CBG → CBG Jul 1, 15:40 UTCJul 1, 16:15 UTC35m
2026-07-01 GCLNA CBG → CBG Jul 1, 13:50 UTCJul 1, 14:30 UTC40m
2026-07-01 GCLNA - Jul 1, 10:50 UTCJul 1, 11:35 UTC45m
2026-06-30 GCLNA CBG → CBG Jun 30, 14:25 UTCJun 30, 15:20 UTC55m
2026-06-30 GCLNA CBG → CBG Jun 30, 13:10 UTCJun 30, 13:50 UTC40m
2026-06-30 GCLNA CBG → CBG Jun 30, 10:25 UTCJun 30, 11:15 UTC50m
2026-06-30 GCLNA - Jun 30, 08:50 UTCJun 30, 09:30 UTC40m
2026-06-29 GCLNA CBG → CBG Jun 29, 15:24 UTCJun 29, 16:10 UTC45m
2026-06-29 GCLNA CBG → CBG Jun 29, 13:49 UTCJun 29, 14:44 UTC55m
2026-06-28 GCLNA - Jun 28, 08:55 UTCJun 28, 10:00 UTC1h 5m
2026-06-27 GCLNA - Jun 27, 15:49 UTCJun 27, 16:20 UTC30m
2026-06-27 GCLNA - Jun 27, 09:00 UTCJun 27, 09:44 UTC45m
2026-06-25 GCLNA - Jun 25, 08:50 UTCJun 25, 09:20 UTC30m
2026-06-23 GCLNA CBG → CBG Jun 23, 15:19 UTCJun 23, 16:09 UTC50m
2026-06-23 GCLNA - Jun 23, 13:39 UTCJun 23, 14:10 UTC30m
2026-06-23 GCLNA CBG → CBG Jun 23, 11:10 UTCJun 23, 11:49 UTC40m
2026-06-23 GCLNA - Jun 23, 08:54 UTCJun 23, 09:49 UTC55m
2026-06-22 GCLNA - Jun 22, 16:14 UTCJun 22, 17:25 UTC1h 10m
2026-06-22 GCLNA - Jun 22, 13:10 UTCJun 22, 13:35 UTC25m
2026-06-22 GCLNA - Jun 22, 10:40 UTCJun 22, 11:24 UTC45m
2026-06-22 GCLNA - Jun 22, 09:04 UTCJun 22, 09:40 UTC35m
2026-06-21 GCLNA - Jun 21, 14:34 UTCJun 21, 14:54 UTC20m
2026-06-21 GCLNA - Jun 21, 09:35 UTCJun 21, 11:15 UTC1h 40m

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

Mode-S 40798F frequently asked

What is Mode-S code 40798F?
40798F is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-CLNA.
Where is Mode-S 40798F registered?
Mode-S code 40798F 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 40798F broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40798F, octal 20074617, decimal 4,225,423.
What flights does 40798F operate?
Mode-S 40798F has broadcast 2 distinct callsigns, including GCLNA, GORDM.