sensors Mode-S transponder

4071D9

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EZPX · AIRBUS A-320

Hex
4071D9
Octal
20070731
Decimal
4,223,449
Country
GB
Tail
G-EZPX
Type
A320
No current signal · last broadcast 12h ago
Flights observed
13
Distinct callsigns
11
Country
GB
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4071D9.

Country allocation

The ICAO 24-bit address 4071D9 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 11 distinct

Callsign Airline Flights Last seen
EZY37LB easyJet 3 2026-04-13
EZY9009 - 1 2026-04-13
EZY81DL - 1 2026-04-12
EZY706N easyJet 1 2026-04-14
EZY64HB - 1 2026-04-13
EZY575B - 1 2026-04-13
EZY574X - 1 2026-04-14
EZY41MV easyJet 1 2026-04-14
EZY323A - 1 2026-04-14
EZY157P - 1 2026-04-13
EZY128H - 1 2026-04-12

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 EZY574X - Apr 14, 10:55 UTCApr 14, 11:05 UTC10m
2026-04-14 EZY323A EDI → BFS Apr 14, 09:25 UTCApr 14, 10:00 UTC35m
2026-04-14 EZY706N BRS → BFS Apr 14, 07:30 UTCApr 14, 08:35 UTC1h 5m
2026-04-14 EZY41MV EDI → LGW Apr 14, 05:15 UTCApr 14, 06:15 UTC1h 0m
2026-04-13 EZY157P - Apr 13, 18:00 UTCApr 13, 18:35 UTC35m
2026-04-13 EZY9009 - Apr 13, 17:00 UTCApr 13, 17:10 UTC10m
2026-04-13 EZY575B EDI → BFS Apr 13, 13:20 UTCApr 13, 14:00 UTC40m
2026-04-13 EZY64HB - Apr 13, 09:45 UTCApr 13, 12:00 UTC2h 15m
2026-04-13 EZY37LB PVK → LGW Apr 13, 08:20 UTCApr 13, 08:35 UTC15m
2026-04-13 EZY37LB PVK → LGW Apr 13, 07:55 UTCApr 13, 08:35 UTC40m
2026-04-13 EZY37LB PVK → LGW Apr 13, 06:15 UTCApr 13, 08:15 UTC2h 0m
2026-04-12 EZY81DL - Apr 12, 19:35 UTCApr 12, 20:15 UTC40m
2026-04-12 EZY128H - Apr 12, 17:50 UTCApr 12, 18:35 UTC45m

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

Mode-S 4071D9 frequently asked

What is Mode-S code 4071D9?
4071D9 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EZPX.
Where is Mode-S 4071D9 registered?
Mode-S code 4071D9 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 4071D9 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4071D9, octal 20070731, decimal 4,223,449.
What flights does 4071D9 operate?
Mode-S 4071D9 has broadcast 11 distinct callsigns, including EZY37LB, EZY9009, EZY81DL, EZY706N, EZY64HB.