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sensors Mode-S transponder

407D99

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-JFPG · AGUSTA AW-109 Grand

Hex
407D99
Octal
20076631
Decimal
4,226,457
Country
GB
Tail
G-JFPG
Type
A109
No current signal · last broadcast 1d ago
Flights observed
75
Distinct callsigns
2
Country
GB
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 407D99.

Country allocation

The ICAO 24-bit address 407D99 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
GJFPG - 40 2026-07-16
EDY06 - 35 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 GJFPG - Jul 16, 15:30 UTCJul 16, 17:10 UTC1h 40m
2026-07-16 GJFPG - Jul 16, 08:10 UTCJul 16, 09:50 UTC1h 40m
2026-07-15 EDY06 NCL → CAX Jul 15, 12:05 UTCJul 15, 12:35 UTC30m
2026-07-15 EDY06 - Jul 15, 11:00 UTCJul 15, 11:20 UTC20m
2026-07-13 EDY06 - Jul 13, 15:20 UTCJul 13, 16:45 UTC1h 25m
2026-07-13 EDY06 - Jul 13, 07:01 UTCJul 13, 08:25 UTC1h 25m
2026-07-12 EDY06 - Jul 12, 16:45 UTCJul 12, 17:01 UTC15m
2026-07-12 EDY06 CAX → NCL Jul 12, 15:45 UTCJul 12, 16:30 UTC45m
2026-07-11 EDY06 - Jul 11, 15:50 UTCJul 11, 16:15 UTC25m
2026-07-11 EDY06 - Jul 11, 14:05 UTCJul 11, 14:15 UTC10m
2026-07-11 EDY06 - Jul 11, 09:15 UTCJul 11, 10:30 UTC1h 15m
2026-07-07 GJFPG - Jul 7, 15:20 UTCJul 7, 17:10 UTC1h 50m
2026-07-07 GJFPG - Jul 7, 07:25 UTCJul 7, 09:00 UTC1h 35m
2026-07-05 GJFPG - Jul 5, 16:45 UTCJul 5, 18:40 UTC1h 55m
2026-07-05 EDY06 CAX → ORM Jul 5, 07:45 UTCJul 5, 14:45 UTC7h 0m
2026-07-03 GJFPG ORM → CAX Jul 3, 15:05 UTCJul 3, 16:20 UTC1h 15m
2026-07-03 GJFPG CAX → ORM Jul 3, 08:45 UTCJul 3, 09:55 UTC1h 10m
2026-07-01 EDY06 - Jul 1, 13:30 UTCJul 1, 15:45 UTC2h 15m
2026-07-01 EDY06 - Jul 1, 08:00 UTCJul 1, 09:55 UTC1h 55m
2026-06-30 EDY06 CAX → CAX Jun 30, 10:30 UTCJun 30, 11:15 UTC45m
2026-06-27 EDY06 - Jun 27, 16:39 UTCJun 27, 19:00 UTC2h 20m
2026-06-27 EDY06 - Jun 27, 15:14 UTCJun 27, 15:30 UTC15m
2026-06-27 EDY06 - Jun 27, 10:54 UTCJun 27, 11:14 UTC20m
2026-06-27 EDY06 - Jun 27, 08:55 UTCJun 27, 10:29 UTC1h 35m
2026-06-25 GJFPG - Jun 25, 14:29 UTCJun 25, 15:59 UTC1h 30m
2026-06-25 GJFPG - Jun 25, 13:50 UTCJun 25, 14:20 UTC30m
2026-06-25 GJFPG - Jun 25, 09:55 UTCJun 25, 10:20 UTC25m
2026-06-25 EDY06 - Jun 25, 07:59 UTCJun 25, 09:40 UTC1h 40m
2026-06-24 EDY06 - Jun 24, 11:54 UTCJun 24, 13:40 UTC1h 45m
2026-06-24 EDY06 - Jun 24, 07:59 UTCJun 24, 09:59 UTC2h 0m
2026-06-21 GJFPG - Jun 21, 10:44 UTCJun 21, 12:24 UTC1h 40m
2026-06-19 GJFPG CAX → BBS Jun 19, 13:44 UTCJun 19, 15:49 UTC2h 5m
2026-06-18 GJFPG - Jun 18, 15:55 UTCJun 18, 17:30 UTC1h 35m
2026-06-18 GJFPG - Jun 18, 07:45 UTCJun 18, 09:35 UTC1h 50m
2026-06-17 GJFPG CAX → CAX Jun 17, 14:30 UTCJun 17, 16:15 UTC1h 45m
2026-06-15 GJFPG ORM → CAX Jun 15, 13:50 UTCJun 15, 15:00 UTC1h 10m
2026-06-15 GJFPG - Jun 15, 09:00 UTCJun 15, 10:15 UTC1h 15m
2026-06-12 GJFPG - Jun 12, 13:15 UTCJun 12, 14:25 UTC1h 10m
2026-06-12 GJFPG - Jun 12, 12:55 UTCJun 12, 13:10 UTC15m
2026-06-12 GJFPG - Jun 12, 11:15 UTCJun 12, 11:30 UTC15m
2026-06-12 GJFPG - Jun 12, 09:05 UTCJun 12, 10:00 UTC55m
2026-06-10 GJFPG - Jun 10, 13:15 UTCJun 10, 15:00 UTC1h 45m
2026-06-10 GJFPG CAX → GBA Jun 10, 09:05 UTCJun 10, 10:40 UTC1h 35m
2026-06-05 EDY06 CAX → CAX Jun 5, 10:45 UTCJun 5, 14:45 UTC4h 0m
2026-06-03 EDY06 - Jun 3, 14:05 UTCJun 3, 15:40 UTC1h 35m
2026-06-03 EDY06 - Jun 3, 07:35 UTCJun 3, 09:25 UTC1h 50m
2026-06-02 EDY06 - Jun 2, 20:05 UTCJun 2, 21:20 UTC1h 15m
2026-06-02 EDY06 - Jun 2, 15:15 UTCJun 2, 18:20 UTC3h 5m
2026-06-02 EDY06 - Jun 2, 12:50 UTCJun 2, 14:40 UTC1h 50m
2026-05-27 GJFPG - May 27, 14:25 UTCMay 27, 16:30 UTC2h 5m

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

Mode-S 407D99 frequently asked

What is Mode-S code 407D99?
407D99 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-JFPG.
Where is Mode-S 407D99 registered?
Mode-S code 407D99 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 407D99 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 407D99, octal 20076631, decimal 4,226,457.
What flights does 407D99 operate?
Mode-S 407D99 has broadcast 2 distinct callsigns, including GJFPG, EDY06.