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sensors Mode-S transponder

402EE9

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
402EE9
Octal
20027351
Decimal
4,206,313
Country
GB
Tail
G-BRDM
Type
P28A
No current signal · last broadcast 14h ago
Flights observed
136
Distinct callsigns
1
Country
GB
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 402EE9.

Country allocation

The ICAO 24-bit address 402EE9 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
GBRDM - 134 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 GBRDM - Jul 13, 12:35 UTCJul 13, 12:50 UTC15m
2026-07-13 GBRDM - Jul 13, 10:45 UTCJul 13, 11:15 UTC30m
2026-07-12 GBRDM - Jul 12, 14:15 UTCJul 12, 14:55 UTC40m
2026-07-11 GBRDM - Jul 11, 16:45 UTCJul 11, 17:35 UTC50m
2026-07-11 GBRDM - Jul 11, 15:30 UTCJul 11, 16:15 UTC45m
2026-07-11 GBRDM - Jul 11, 13:00 UTCJul 11, 14:00 UTC1h 0m
2026-07-11 GBRDM - Jul 11, 11:15 UTCJul 11, 12:05 UTC50m
2026-07-11 GBRDM - Jul 11, 09:15 UTCJul 11, 09:55 UTC40m
2026-07-10 GBRDM - Jul 10, 10:45 UTCJul 10, 11:35 UTC50m
2026-07-10 GBRDM - Jul 10, 09:15 UTCJul 10, 10:10 UTC55m
2026-07-09 GBRDM - Jul 9, 17:20 UTCJul 9, 18:05 UTC45m
2026-07-09 GBRDM - Jul 9, 15:15 UTCJul 9, 16:00 UTC45m
2026-07-09 - - Jul 9, 11:30 UTCJul 9, 11:50 UTC20m
2026-07-09 GBRDM - Jul 9, 09:35 UTCJul 9, 10:15 UTC40m
2026-07-09 GBRDM - Jul 9, 07:55 UTCJul 9, 08:45 UTC50m
2026-07-08 GBRDM - Jul 8, 12:45 UTCJul 8, 13:25 UTC40m
2026-07-08 GBRDM - Jul 8, 11:15 UTCJul 8, 12:00 UTC45m
2026-07-07 GBRDM - Jul 7, 17:00 UTCJul 7, 17:35 UTC35m
2026-07-07 GBRDM - Jul 7, 14:10 UTCJul 7, 15:25 UTC1h 15m
2026-07-07 GBRDM - Jul 7, 11:55 UTCJul 7, 13:05 UTC1h 10m
2026-07-07 GBRDM - Jul 7, 10:20 UTCJul 7, 11:10 UTC50m
2026-07-07 GBRDM - Jul 7, 08:00 UTCJul 7, 09:10 UTC1h 10m
2026-07-06 GBRDM - Jul 6, 10:55 UTCJul 6, 11:45 UTC50m
2026-07-05 GBRDM - Jul 5, 14:45 UTCJul 5, 15:35 UTC50m
2026-07-05 GBRDM - Jul 5, 14:10 UTCJul 5, 14:25 UTC15m
2026-07-05 GBRDM - Jul 5, 13:35 UTCJul 5, 13:50 UTC15m
2026-07-04 GBRDM - Jul 4, 14:20 UTCJul 4, 14:55 UTC35m
2026-07-04 GBRDM - Jul 4, 12:35 UTCJul 4, 12:50 UTC15m
2026-07-04 GBRDM - Jul 4, 10:15 UTCJul 4, 11:15 UTC1h 0m
2026-07-03 GBRDM - Jul 3, 17:05 UTCJul 3, 17:20 UTC15m
2026-07-03 GBRDM - Jul 3, 14:55 UTCJul 3, 16:00 UTC1h 5m
2026-07-03 GBRDM - Jul 3, 13:25 UTCJul 3, 14:10 UTC45m
2026-07-03 GBRDM - Jul 3, 10:25 UTCJul 3, 11:20 UTC55m
2026-07-03 GBRDM - Jul 3, 08:35 UTCJul 3, 09:35 UTC1h 0m
2026-07-02 GBRDM - Jul 2, 17:15 UTCJul 2, 18:00 UTC45m
2026-07-02 GBRDM - Jul 2, 14:35 UTCJul 2, 15:35 UTC1h 0m
2026-07-02 GBRDM - Jul 2, 12:40 UTCJul 2, 13:45 UTC1h 5m
2026-06-30 GBRDM - Jun 30, 09:50 UTCJun 30, 10:30 UTC40m
2026-06-30 GBRDM - Jun 30, 08:00 UTCJun 30, 08:50 UTC50m
2026-06-27 GBRDM - Jun 27, 17:59 UTCJun 27, 18:24 UTC25m
2026-06-27 GBRDM - Jun 27, 16:00 UTCJun 27, 16:44 UTC45m
2026-06-24 - - Jun 24, 09:39 UTCJun 24, 10:10 UTC30m
2026-06-23 GBRDM - Jun 23, 08:50 UTCJun 23, 10:15 UTC1h 25m
2026-06-23 GBRDM - Jun 23, 08:20 UTCJun 23, 08:35 UTC15m
2026-06-22 GBRDM - Jun 22, 11:09 UTCJun 22, 14:14 UTC3h 5m
2026-06-22 GBRDM - Jun 22, 08:35 UTCJun 22, 10:00 UTC1h 25m
2026-06-21 GBRDM - Jun 21, 11:15 UTCJun 21, 12:04 UTC50m
2026-06-21 GBRDM - Jun 21, 09:15 UTCJun 21, 09:59 UTC45m
2026-06-19 GBRDM - Jun 19, 11:09 UTCJun 19, 11:39 UTC30m
2026-06-18 GBRDM - Jun 18, 13:05 UTCJun 18, 15:50 UTC2h 45m

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

Mode-S 402EE9 frequently asked

What is Mode-S code 402EE9?
402EE9 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-BRDM.
Where is Mode-S 402EE9 registered?
Mode-S code 402EE9 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 402EE9 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 402EE9, octal 20027351, decimal 4,206,313.
What flights does 402EE9 operate?
Mode-S 402EE9 has broadcast 1 distinct callsign, including GBRDM.