Apparatus

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sensors Mode-S transponder

3E0FEF

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HXFR

Hex
3E0FEF
Octal
17407757
Decimal
4,067,311
Country
DE
Tail
D-HXFR
Type
EC45
Transponder active on ground
Flights observed
23
Distinct callsigns
1
Country
DE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3E0FEF.

Country allocation

The ICAO 24-bit address 3E0FEF falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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
CHX89 - 23 2026-04-18

Recent flights last 23

DateFlightRouteTakeoffLandingDuration
2026-04-18 CHX89 - Apr 18, 12:40 UTCApr 18, 13:35 UTC55m
2026-04-18 CHX89 - Apr 18, 10:45 UTCApr 18, 11:50 UTC1h 5m
2026-04-18 CHX89 - Apr 18, 06:50 UTCApr 18, 07:00 UTC10m
2026-04-18 CHX89 - Apr 18, 06:15 UTCApr 18, 06:25 UTC10m
2026-04-17 CHX89 - Apr 17, 23:05 UTCApr 17, 23:20 UTC15m
2026-04-17 CHX89 - Apr 17, 20:00 UTCApr 17, 20:20 UTC20m
2026-04-17 CHX89 - Apr 17, 15:20 UTCApr 17, 16:10 UTC50m
2026-04-17 CHX89 - Apr 17, 10:15 UTCApr 17, 11:15 UTC1h 0m
2026-04-17 CHX89 - Apr 17, 08:35 UTCApr 17, 08:55 UTC20m
2026-04-17 CHX89 - Apr 17, 07:20 UTCApr 17, 07:45 UTC25m
2026-04-16 CHX89 - Apr 16, 17:35 UTCApr 16, 17:44 UTC10m
2026-04-16 CHX89 - Apr 16, 12:00 UTCApr 16, 12:29 UTC30m
2026-04-16 CHX89 - Apr 16, 09:10 UTCApr 16, 09:39 UTC30m
2026-04-16 CHX89 - Apr 16, 07:45 UTCApr 16, 08:24 UTC40m
2026-04-15 CHX89 - Apr 15, 21:10 UTCApr 15, 21:30 UTC20m
2026-04-15 CHX89 - Apr 15, 10:05 UTCApr 15, 10:40 UTC35m
2026-04-15 CHX89 - Apr 15, 08:25 UTCApr 15, 08:55 UTC30m
2026-04-14 CHX89 - Apr 14, 14:20 UTCApr 14, 14:35 UTC15m
2026-04-14 CHX89 - Apr 14, 11:50 UTCApr 14, 12:05 UTC15m
2026-04-13 CHX89 - Apr 13, 18:00 UTCApr 13, 18:15 UTC15m
2026-04-13 CHX89 - Apr 13, 15:30 UTCApr 13, 15:45 UTC15m
2026-04-13 CHX89 - Apr 13, 14:20 UTCApr 13, 14:35 UTC15m
2026-04-13 CHX89 - Apr 13, 10:50 UTCApr 13, 11:15 UTC25m

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 D-HXFR page for operator, model, and routing details .

Mode-S 3E0FEF frequently asked

What is Mode-S code 3E0FEF?
3E0FEF is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HXFR.
Where is Mode-S 3E0FEF registered?
Mode-S code 3E0FEF is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3E0FEF broadcasting right now?
Mode-S 3E0FEF is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3E0FEF, octal 17407757, decimal 4,067,311.
What flights does 3E0FEF operate?
Mode-S 3E0FEF has broadcast 1 distinct callsign, including CHX89.