sensors Mode-S transponder

402948

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
402948
Octal
20024510
Decimal
4,204,872
Country
GB
Tail
G-OODW
Type
P28A
No current signal · last broadcast 4d ago
Flights observed
40
Distinct callsigns
2
Country
GB
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 402948.

Country allocation

The ICAO 24-bit address 402948 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
GOODW - 35 2026-07-23
GASVM - 5 2026-07-26

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-07-26 GASVM - Jul 26, 08:05 UTCJul 26, 09:00 UTC55m
2026-07-23 GOODW - Jul 23, 12:05 UTCJul 23, 13:50 UTC1h 45m
2026-07-19 GOODW - Jul 19, 14:50 UTCJul 19, 15:40 UTC50m
2026-07-19 GOODW - Jul 19, 11:25 UTCJul 19, 12:00 UTC35m
2026-07-19 GOODW - Jul 19, 09:10 UTCJul 19, 09:35 UTC25m
2026-07-18 GOODW - Jul 18, 14:50 UTCJul 18, 15:25 UTC35m
2026-07-18 GOODW - Jul 18, 12:30 UTCJul 18, 13:00 UTC30m
2026-07-18 GOODW - Jul 18, 09:45 UTCJul 18, 10:20 UTC35m
2026-07-17 GOODW - Jul 17, 14:10 UTCJul 17, 14:35 UTC25m
2026-07-17 GOODW - Jul 17, 12:35 UTCJul 17, 13:15 UTC40m
2026-07-16 GOODW - Jul 16, 16:05 UTCJul 16, 16:19 UTC15m
2026-07-16 GOODW - Jul 16, 10:04 UTCJul 16, 10:45 UTC40m
2026-07-06 GOODW - Jul 6, 09:55 UTCJul 6, 10:15 UTC20m
2026-06-30 GOODW - Jun 30, 14:25 UTCJun 30, 15:05 UTC40m
2026-06-30 GOODW - Jun 30, 11:35 UTCJun 30, 11:55 UTC20m
2026-06-29 GOODW - Jun 29, 15:34 UTCJun 29, 16:04 UTC30m
2026-06-29 GOODW - Jun 29, 14:25 UTCJun 29, 14:54 UTC30m
2026-06-28 GASVM - Jun 28, 08:00 UTCJun 28, 08:29 UTC30m
2026-06-25 GOODW - Jun 25, 12:10 UTCJun 25, 12:30 UTC20m
2026-06-24 GOODW - Jun 24, 09:05 UTCJun 24, 09:45 UTC40m
2026-06-22 GOODW - Jun 22, 13:35 UTCJun 22, 13:44 UTC10m
2026-06-22 GOODW - Jun 22, 12:54 UTCJun 22, 13:05 UTC10m
2026-06-20 GOODW - Jun 20, 11:05 UTCJun 20, 11:20 UTC15m
2026-06-16 GOODW - Jun 16, 13:34 UTCJun 16, 15:30 UTC1h 55m
2026-06-12 GOODW - Jun 12, 10:05 UTCJun 12, 10:35 UTC30m
2026-06-08 GOODW BBS → BBS Jun 8, 15:00 UTCJun 8, 15:45 UTC45m
2026-06-04 GOODW - Jun 4, 13:40 UTCJun 4, 15:25 UTC1h 45m
2026-05-31 GOODW - May 31, 13:25 UTCMay 31, 14:00 UTC35m
2026-05-31 GOODW - May 31, 11:10 UTCMay 31, 11:35 UTC25m
2026-05-31 GOODW - May 31, 09:30 UTCMay 31, 10:10 UTC40m
2026-05-29 GOODW - May 29, 12:35 UTCMay 29, 13:10 UTC35m
2026-05-25 GOODW - May 25, 08:45 UTCMay 25, 10:35 UTC1h 50m
2026-05-24 GASVM - May 24, 13:20 UTCMay 24, 13:45 UTC25m
2026-05-24 GASVM - May 24, 10:10 UTCMay 24, 10:25 UTC15m
2026-05-20 GOODW - May 20, 08:45 UTCMay 20, 09:15 UTC30m
2026-05-02 GOODW - May 2, 09:30 UTCMay 2, 09:50 UTC20m
2026-05-01 GOODW - May 1, 09:20 UTCMay 1, 10:50 UTC1h 30m
2026-04-27 GOODW - Apr 27, 08:50 UTCApr 27, 09:40 UTC50m
2026-04-26 GASVM - Apr 26, 11:10 UTCApr 26, 12:10 UTC1h 0m
2026-04-24 GOODW - Apr 24, 10:45 UTCApr 24, 11:40 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-OODW page for operator, model, and routing details .

Mode-S 402948 frequently asked

What is Mode-S code 402948?
402948 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-OODW.
Where is Mode-S 402948 registered?
Mode-S code 402948 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 402948 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 402948, octal 20024510, decimal 4,204,872.
What flights does 402948 operate?
Mode-S 402948 has broadcast 2 distinct callsigns, including GOODW, GASVM.