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sensors Mode-S transponder

3D1798

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-EHEM · DIAMOND DA-20

Hex
3D1798
Octal
17213630
Decimal
4,003,736
Country
DE
Tail
D-EHEM
Type
DV20
Broadcasting now · callsign DEHEM · 925 ft
Flights observed
55
Distinct callsigns
1
Country
DE
Last broadcast
7d ago

Current position

3D1798 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3D1798 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
DEHEM - 55 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-22 DEHEM - Jun 22, 17:04 UTCJun 22, 17:15 UTC10m
2026-06-22 DEHEM - Jun 22, 15:35 UTCJun 22, 15:59 UTC25m
2026-06-16 DEHEM - Jun 16, 07:20 UTCJun 16, 07:50 UTC30m
2026-06-15 DEHEM - Jun 15, 14:34 UTCJun 15, 15:10 UTC35m
2026-06-15 DEHEM - Jun 15, 08:25 UTCJun 15, 10:05 UTC1h 40m
2026-06-14 DEHEM - Jun 14, 08:45 UTCJun 14, 09:45 UTC1h 0m
2026-06-13 DEHEM - Jun 13, 15:10 UTCJun 13, 15:40 UTC30m
2026-06-13 DEHEM - Jun 13, 12:15 UTCJun 13, 13:50 UTC1h 35m
2026-06-11 DEHEM - Jun 11, 10:20 UTCJun 11, 10:35 UTC15m
2026-06-11 DEHEM - Jun 11, 08:50 UTCJun 11, 09:05 UTC15m
2026-06-09 DEHEM - Jun 9, 15:05 UTCJun 9, 15:35 UTC30m
2026-06-09 DEHEM - Jun 9, 13:50 UTCJun 9, 14:10 UTC20m
2026-06-09 DEHEM - Jun 9, 10:35 UTCJun 9, 11:45 UTC1h 10m
2026-06-08 DEHEM - Jun 8, 13:30 UTCJun 8, 14:20 UTC50m
2026-06-08 DEHEM - Jun 8, 10:45 UTCJun 8, 12:25 UTC1h 40m
2026-06-08 DEHEM - Jun 8, 08:50 UTCJun 8, 10:10 UTC1h 20m
2026-06-08 DEHEM - Jun 8, 06:40 UTCJun 8, 07:40 UTC1h 0m
2026-06-07 DEHEM - Jun 7, 14:50 UTCJun 7, 16:10 UTC1h 20m
2026-06-07 DEHEM - Jun 7, 10:10 UTCJun 7, 11:35 UTC1h 25m
2026-06-07 DEHEM - Jun 7, 08:30 UTCJun 7, 09:25 UTC55m
2026-06-06 DEHEM - Jun 6, 16:50 UTCJun 6, 17:54 UTC1h 5m
2026-06-06 DEHEM - Jun 6, 14:59 UTCJun 6, 16:04 UTC1h 5m
2026-06-06 DEHEM - Jun 6, 12:14 UTCJun 6, 13:54 UTC1h 40m
2026-06-06 DEHEM - Jun 6, 08:30 UTCJun 6, 10:00 UTC1h 30m
2026-06-05 DEHEM - Jun 5, 09:10 UTCJun 5, 11:40 UTC2h 30m
2026-06-03 DEHEM - Jun 3, 10:15 UTCJun 3, 13:05 UTC2h 50m
2026-06-01 DEHEM - Jun 1, 17:05 UTCJun 1, 17:45 UTC40m
2026-06-01 DEHEM - Jun 1, 15:25 UTCJun 1, 16:30 UTC1h 5m
2026-05-30 DEHEM - May 30, 15:10 UTCMay 30, 16:45 UTC1h 35m
2026-05-29 DEHEM - May 29, 15:30 UTCMay 29, 15:55 UTC25m
2026-05-29 DEHEM - May 29, 13:15 UTCMay 29, 14:00 UTC45m
2026-05-29 DEHEM - May 29, 11:25 UTCMay 29, 12:25 UTC1h 0m
2026-05-28 DEHEM - May 28, 14:30 UTCMay 28, 16:20 UTC1h 50m
2026-05-28 DEHEM - May 28, 09:20 UTCMay 28, 11:15 UTC1h 55m
2026-05-26 DEHEM - May 26, 14:14 UTCMay 26, 14:45 UTC30m
2026-05-25 DEHEM - May 25, 16:15 UTCMay 25, 16:55 UTC40m
2026-05-25 DEHEM - May 25, 10:00 UTCMay 25, 11:30 UTC1h 30m
2026-05-25 DEHEM - May 25, 07:50 UTCMay 25, 09:25 UTC1h 35m
2026-05-24 DEHEM - May 24, 16:25 UTCMay 24, 18:20 UTC1h 55m
2026-05-24 DEHEM - May 24, 13:35 UTCMay 24, 14:50 UTC1h 15m
2026-05-24 DEHEM - May 24, 07:35 UTCMay 24, 10:20 UTC2h 45m
2026-05-23 DEHEM - May 23, 13:20 UTCMay 23, 14:45 UTC1h 25m
2026-05-23 DEHEM - May 23, 11:40 UTCMay 23, 12:40 UTC1h 0m
2026-05-22 DEHEM - May 22, 11:05 UTCMay 22, 11:35 UTC30m
2026-05-17 DEHEM - May 17, 09:30 UTCMay 17, 10:25 UTC55m
2026-05-16 DEHEM - May 16, 14:55 UTCMay 16, 16:15 UTC1h 20m
2026-05-16 DEHEM - May 16, 12:05 UTCMay 16, 13:46 UTC1h 40m
2026-05-16 DEHEM - May 16, 09:56 UTCMay 16, 10:16 UTC20m
2026-05-15 DEHEM - May 15, 16:25 UTCMay 15, 17:20 UTC55m
2026-05-15 DEHEM - May 15, 14:00 UTCMay 15, 15:30 UTC1h 29m

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

Mode-S 3D1798 frequently asked

What is Mode-S code 3D1798?
3D1798 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-EHEM.
Where is Mode-S 3D1798 registered?
Mode-S code 3D1798 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D1798 broadcasting right now?
Yes. Mode-S 3D1798 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3D1798, octal 17213630, decimal 4,003,736.
What flights does 3D1798 operate?
Mode-S 3D1798 has broadcast 1 distinct callsign, including DEHEM.