Apparatus

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sensors Mode-S transponder

3DF744

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HNWU · AIRBUS HELICOPTERS EC-145

Hex
3DF744
Octal
17373504
Decimal
4,060,996
Country
DE
Tail
D-HNWU
Type
EC45
No current signal · last broadcast 1d ago
Flights observed
37
Distinct callsigns
1
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3DF744.

Country allocation

The ICAO 24-bit address 3DF744 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
HUMMEL4 - 37 2026-06-11

Recent flights last 37

DateFlightRouteTakeoffLandingDuration
2026-06-11 HUMMEL4 DTM → DTM Jun 11, 13:10 UTCJun 11, 13:30 UTC20m
2026-06-11 HUMMEL4 - Jun 11, 07:20 UTCJun 11, 08:15 UTC55m
2026-06-10 HUMMEL4 - Jun 10, 16:45 UTCJun 10, 18:30 UTC1h 45m
2026-06-10 HUMMEL4 DTM → DTM Jun 10, 10:30 UTCJun 10, 12:45 UTC2h 15m
2026-06-10 HUMMEL4 DTM → DTM Jun 10, 06:45 UTCJun 10, 08:35 UTC1h 50m
2026-06-09 HUMMEL4 - Jun 9, 10:35 UTCJun 9, 10:55 UTC20m
2026-06-09 HUMMEL4 DTM → DUS Jun 9, 07:15 UTCJun 9, 09:40 UTC2h 25m
2026-06-08 HUMMEL4 - Jun 8, 13:45 UTCJun 8, 14:05 UTC20m
2026-06-08 HUMMEL4 - Jun 8, 10:50 UTCJun 8, 11:15 UTC25m
2026-06-03 HUMMEL4 DUS → DUS Jun 3, 06:40 UTCJun 3, 08:55 UTC2h 15m
2026-05-27 HUMMEL4 - May 27, 08:30 UTCMay 27, 11:00 UTC2h 30m
2026-05-26 HUMMEL4 DUS → DUS May 26, 10:05 UTCMay 26, 11:00 UTC55m
2026-05-26 HUMMEL4 - May 26, 07:10 UTCMay 26, 08:19 UTC1h 10m
2026-05-26 HUMMEL4 DUS → DUS May 26, 04:35 UTCMay 26, 05:54 UTC1h 20m
2026-05-22 HUMMEL4 - May 22, 07:20 UTCMay 22, 09:10 UTC1h 50m
2026-05-21 HUMMEL4 - May 21, 07:15 UTCMay 21, 09:35 UTC2h 20m
2026-05-19 HUMMEL4 - May 19, 13:20 UTCMay 19, 13:30 UTC10m
2026-05-19 HUMMEL4 - May 19, 11:05 UTCMay 19, 12:45 UTC1h 40m
2026-05-19 HUMMEL4 - May 19, 07:45 UTCMay 19, 09:30 UTC1h 45m
2026-05-19 HUMMEL4 - May 19, 06:35 UTCMay 19, 06:50 UTC15m
2026-05-18 HUMMEL4 - May 18, 09:45 UTCMay 18, 11:05 UTC1h 20m
2026-05-18 HUMMEL4 - May 18, 07:50 UTCMay 18, 09:00 UTC1h 10m
2026-05-12 HUMMEL4 DUS → DUS May 12, 12:35 UTCMay 12, 13:35 UTC1h 0m
2026-05-12 HUMMEL4 - May 12, 11:05 UTCMay 12, 11:15 UTC10m
2026-05-12 HUMMEL4 - May 12, 09:00 UTCMay 12, 09:35 UTC35m
2026-05-12 HUMMEL4 - May 12, 07:05 UTCMay 12, 07:50 UTC45m
2026-05-08 HUMMEL4 - May 8, 08:09 UTCMay 8, 09:34 UTC1h 25m
2026-05-07 HUMMEL4 - May 7, 09:25 UTCMay 7, 09:35 UTC10m
2026-04-30 HUMMEL4 - Apr 30, 12:50 UTCApr 30, 13:05 UTC15m
2026-04-29 HUMMEL4 DTM → DUS Apr 29, 13:00 UTCApr 29, 13:25 UTC25m
2026-04-29 HUMMEL4 - Apr 29, 11:05 UTCApr 29, 11:15 UTC10m
2026-04-29 HUMMEL4 DUS → DTM Apr 29, 07:40 UTCApr 29, 08:20 UTC40m
2026-04-28 HUMMEL4 WVN → DUS Apr 28, 13:30 UTCApr 28, 14:55 UTC1h 25m
2026-04-28 HUMMEL4 WVN → WVN Apr 28, 08:55 UTCApr 28, 10:00 UTC1h 5m
2026-04-28 HUMMEL4 WVN → WVN Apr 28, 07:20 UTCApr 28, 07:35 UTC15m
2026-04-28 HUMMEL4 WVN → WVN Apr 28, 06:40 UTCApr 28, 06:45 UTC5m
2026-04-27 HUMMEL4 WVN → WVN Apr 27, 10:20 UTCApr 27, 10:25 UTC5m

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

Mode-S 3DF744 frequently asked

What is Mode-S code 3DF744?
3DF744 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HNWU.
Where is Mode-S 3DF744 registered?
Mode-S code 3DF744 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DF744 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DF744, octal 17373504, decimal 4,060,996.
What flights does 3DF744 operate?
Mode-S 3DF744 has broadcast 1 distinct callsign, including HUMMEL4.