Apparatus

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sensors Mode-S transponder

3DDD3B

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HEAL

Hex
3DDD3B
Octal
17356473
Decimal
4,054,331
Country
DE
Tail
D-HEAL
Type
R44
No current signal · last broadcast 11h ago
Flights observed
157
Distinct callsigns
1
Country
DE
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 3DDD3B.

Country allocation

The ICAO 24-bit address 3DDD3B 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
DHEAL - 157 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DHEAL - Jul 13, 15:50 UTCJul 13, 17:45 UTC1h 55m
2026-07-13 DHEAL - Jul 13, 15:10 UTCJul 13, 15:15 UTC5m
2026-07-13 DHEAL - Jul 13, 14:20 UTCJul 13, 15:05 UTC45m
2026-07-13 DHEAL - Jul 13, 14:05 UTCJul 13, 14:10 UTC5m
2026-07-13 DHEAL - Jul 13, 13:40 UTCJul 13, 14:00 UTC20m
2026-07-13 DHEAL - Jul 13, 13:20 UTCJul 13, 13:30 UTC10m
2026-07-13 DHEAL - Jul 13, 11:00 UTCJul 13, 11:10 UTC10m
2026-07-13 DHEAL - Jul 13, 10:40 UTCJul 13, 10:55 UTC15m
2026-07-13 DHEAL - Jul 13, 10:15 UTCJul 13, 10:35 UTC20m
2026-07-13 DHEAL - Jul 13, 09:25 UTCJul 13, 09:30 UTC5m
2026-07-13 DHEAL - Jul 13, 09:05 UTCJul 13, 09:10 UTC5m
2026-07-13 DHEAL - Jul 13, 08:50 UTCJul 13, 08:55 UTC5m
2026-07-11 DHEAL - Jul 11, 08:20 UTCJul 11, 09:20 UTC1h 0m
2026-07-10 DHEAL - Jul 10, 13:40 UTCJul 10, 14:00 UTC20m
2026-07-10 DHEAL - Jul 10, 12:40 UTCJul 10, 13:05 UTC25m
2026-07-09 DHEAL - Jul 9, 18:10 UTCJul 9, 18:20 UTC10m
2026-07-09 DHEAL - Jul 9, 17:35 UTCJul 9, 17:45 UTC10m
2026-07-09 DHEAL - Jul 9, 16:55 UTCJul 9, 17:30 UTC35m
2026-07-09 DHEAL - Jul 9, 13:20 UTCJul 9, 13:35 UTC15m
2026-07-09 DHEAL - Jul 9, 13:00 UTCJul 9, 13:15 UTC15m
2026-07-09 DHEAL - Jul 9, 12:40 UTCJul 9, 12:50 UTC10m
2026-07-08 DHEAL - Jul 8, 12:10 UTCJul 8, 12:25 UTC15m
2026-06-25 DHEAL - Jun 25, 09:05 UTCJun 25, 10:09 UTC1h 5m
2026-06-25 DHEAL - Jun 25, 06:20 UTCJun 25, 08:14 UTC1h 55m
2026-06-24 DHEAL - Jun 24, 14:20 UTCJun 24, 16:05 UTC1h 45m
2026-06-24 DHEAL - Jun 24, 12:14 UTCJun 24, 13:50 UTC1h 35m
2026-06-24 DHEAL - Jun 24, 11:45 UTCJun 24, 12:09 UTC25m
2026-06-24 DHEAL - Jun 24, 10:49 UTCJun 24, 10:59 UTC10m
2026-06-24 DHEAL - Jun 24, 08:39 UTCJun 24, 09:49 UTC1h 10m
2026-06-24 DHEAL - Jun 24, 07:10 UTCJun 24, 07:24 UTC15m
2026-06-23 DHEAL - Jun 23, 14:44 UTCJun 23, 15:15 UTC30m
2026-06-23 DHEAL - Jun 23, 12:35 UTCJun 23, 13:39 UTC1h 5m
2026-06-23 DHEAL - Jun 23, 08:45 UTCJun 23, 11:35 UTC2h 50m
2026-06-23 DHEAL - Jun 23, 06:55 UTCJun 23, 08:09 UTC1h 15m
2026-06-22 DHEAL - Jun 22, 11:24 UTCJun 22, 13:19 UTC1h 55m
2026-06-22 DHEAL - Jun 22, 10:34 UTCJun 22, 10:49 UTC15m
2026-06-22 DHEAL - Jun 22, 07:49 UTCJun 22, 10:05 UTC2h 15m
2026-06-16 DHEAL - Jun 16, 13:34 UTCJun 16, 15:09 UTC1h 35m
2026-06-16 DHEAL - Jun 16, 12:50 UTCJun 16, 13:00 UTC10m
2026-06-16 DHEAL - Jun 16, 10:49 UTCJun 16, 12:20 UTC1h 30m
2026-06-16 DHEAL - Jun 16, 06:59 UTCJun 16, 09:40 UTC2h 40m
2026-06-15 DHEAL - Jun 15, 10:35 UTCJun 15, 13:15 UTC2h 40m
2026-06-14 DHEAL - Jun 14, 15:15 UTCJun 14, 16:05 UTC50m
2026-06-14 DHEAL - Jun 14, 11:30 UTCJun 14, 11:50 UTC20m
2026-06-13 DHEAL - Jun 13, 14:40 UTCJun 13, 15:05 UTC25m
2026-06-13 DHEAL - Jun 13, 14:05 UTCJun 13, 14:35 UTC30m
2026-06-13 DHEAL - Jun 13, 13:30 UTCJun 13, 13:55 UTC25m
2026-06-12 DHEAL - Jun 12, 10:00 UTCJun 12, 12:05 UTC2h 5m
2026-06-11 DHEAL - Jun 11, 15:20 UTCJun 11, 15:45 UTC25m
2026-06-10 DHEAL - Jun 10, 09:45 UTCJun 10, 11:00 UTC1h 15m

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

Mode-S 3DDD3B frequently asked

What is Mode-S code 3DDD3B?
3DDD3B is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HEAL.
Where is Mode-S 3DDD3B registered?
Mode-S code 3DDD3B is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DDD3B broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DDD3B, octal 17356473, decimal 4,054,331.
What flights does 3DDD3B operate?
Mode-S 3DDD3B has broadcast 1 distinct callsign, including DHEAL.