Apparatus

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sensors Mode-S transponder

3DF741

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3DF741
Octal
17373501
Decimal
4,060,993
Country
DE
Tail
D-HNWR
Type
EC45
Broadcasting now · callsign HUMMEL1 · 300 ft
Flights observed
143
Distinct callsigns
2
Country
DE
Last broadcast
3h ago

Current position

3DF741 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3DF741 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 2 distinct

Callsign Airline Flights Last seen
HUMMEL1 - 118 2026-06-08
NRW1 - 24 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-08 HUMMEL1 - Jun 8, 12:00 UTCJun 8, 12:40 UTC40m
2026-06-08 HUMMEL1 - Jun 8, 10:50 UTCJun 8, 11:05 UTC15m
2026-06-08 HUMMEL1 - Jun 8, 09:45 UTCJun 8, 10:20 UTC35m
2026-06-08 HUMMEL1 - Jun 8, 01:00 UTCJun 8, 02:45 UTC1h 45m
2026-06-07 HUMMEL1 - Jun 7, 21:35 UTCJun 7, 23:45 UTC2h 10m
2026-06-07 HUMMEL1 - Jun 7, 18:45 UTCJun 7, 21:15 UTC2h 30m
2026-06-07 HUMMEL1 DTM → DTM Jun 7, 13:05 UTCJun 7, 16:15 UTC3h 10m
2026-06-06 HUMMEL1 DTM → DTM Jun 6, 23:15 UTCJun 7, 02:55 UTC3h 40m
2026-06-06 HUMMEL1 DTM → DTM Jun 6, 15:44 UTCJun 6, 16:39 UTC55m
2026-06-06 HUMMEL1 DTM → DTM Jun 6, 00:50 UTCJun 6, 03:25 UTC2h 35m
2026-06-04 HUMMEL1 DTM → DTM Jun 4, 23:50 UTCJun 5, 01:35 UTC1h 45m
2026-06-04 HUMMEL1 DTM → DTM Jun 4, 23:05 UTCJun 4, 23:10 UTC5m
2026-06-04 HUMMEL1 DTM → DTM Jun 4, 21:00 UTCJun 4, 22:10 UTC1h 10m
2026-06-04 HUMMEL1 DTM → DTM Jun 4, 17:25 UTCJun 4, 18:50 UTC1h 25m
2026-06-04 HUMMEL1 - Jun 4, 12:25 UTCJun 4, 12:40 UTC15m
2026-06-04 HUMMEL1 DTM → DTM Jun 4, 03:00 UTCJun 4, 03:20 UTC20m
2026-06-03 HUMMEL1 - Jun 3, 22:15 UTCJun 3, 22:35 UTC20m
2026-06-03 HUMMEL1 DTM → DTM Jun 3, 16:00 UTCJun 3, 21:00 UTC5h 0m
2026-06-03 HUMMEL1 DTM → DTM Jun 3, 02:05 UTCJun 3, 03:20 UTC1h 15m
2026-06-02 HUMMEL1 DTM → DTM Jun 2, 20:20 UTCJun 2, 22:05 UTC1h 45m
2026-06-02 HUMMEL1 DTM → DTM Jun 2, 15:40 UTCJun 2, 17:20 UTC1h 40m
2026-06-02 HUMMEL1 - Jun 2, 12:10 UTCJun 2, 14:15 UTC2h 5m
2026-06-02 HUMMEL1 DTM → DTM Jun 2, 08:15 UTCJun 2, 09:10 UTC55m
2026-06-02 HUMMEL1 DTM → DTM Jun 2, 01:55 UTCJun 2, 02:50 UTC55m
2026-06-02 HUMMEL1 DTM → DTM Jun 2, 00:40 UTCJun 2, 01:20 UTC40m
2026-06-01 HUMMEL1 - Jun 1, 21:15 UTCJun 1, 22:50 UTC1h 35m
2026-06-01 HUMMEL1 - Jun 1, 17:55 UTCJun 1, 19:35 UTC1h 40m
2026-06-01 HUMMEL1 - Jun 1, 09:15 UTCJun 1, 10:15 UTC1h 0m
2026-06-01 HUMMEL1 - Jun 1, 03:05 UTCJun 1, 04:25 UTC1h 20m
2026-05-31 HUMMEL1 - May 31, 20:30 UTCJun 1, 00:50 UTC4h 20m
2026-05-31 HUMMEL1 DUS → DUS May 31, 18:05 UTCMay 31, 19:15 UTC1h 10m
2026-05-31 HUMMEL1 - May 31, 15:50 UTCMay 31, 17:10 UTC1h 20m
2026-05-31 HUMMEL1 - May 31, 08:25 UTCMay 31, 10:15 UTC1h 50m
2026-05-30 HUMMEL1 - May 30, 23:20 UTCMay 31, 01:11 UTC1h 51m
2026-05-30 HUMMEL1 - May 30, 19:15 UTCMay 30, 20:50 UTC1h 35m
2026-05-30 HUMMEL1 - May 30, 17:10 UTCMay 30, 17:50 UTC40m
2026-05-30 HUMMEL1 - May 30, 01:45 UTCMay 30, 02:45 UTC1h 0m
2026-05-29 HUMMEL1 - May 29, 22:35 UTCMay 29, 23:55 UTC1h 20m
2026-05-29 HUMMEL1 - May 29, 16:55 UTCMay 29, 18:15 UTC1h 20m
2026-05-29 HUMMEL1 - May 29, 12:35 UTCMay 29, 13:40 UTC1h 5m
2026-05-29 HUMMEL1 - May 29, 09:00 UTCMay 29, 09:20 UTC20m
2026-05-29 HUMMEL1 DUS → DUS May 29, 01:20 UTCMay 29, 01:45 UTC25m
2026-05-28 HUMMEL1 - May 28, 23:35 UTCMay 29, 00:35 UTC1h 0m
2026-05-28 HUMMEL1 - May 28, 20:55 UTCMay 28, 22:45 UTC1h 50m
2026-05-28 HUMMEL1 - May 28, 18:40 UTCMay 28, 19:00 UTC20m
2026-05-28 HUMMEL1 - May 28, 16:20 UTCMay 28, 17:05 UTC45m
2026-05-28 HUMMEL1 - May 28, 10:00 UTCMay 28, 11:15 UTC1h 15m
2026-05-28 HUMMEL1 - May 28, 00:05 UTCMay 28, 03:30 UTC3h 25m
2026-05-27 HUMMEL1 - May 27, 21:10 UTCMay 27, 23:15 UTC2h 5m
2026-05-26 HUMMEL1 DUS → DUS May 26, 20:45 UTCMay 26, 21:59 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-HNWR page for operator, model, and routing details .

Mode-S 3DF741 frequently asked

What is Mode-S code 3DF741?
3DF741 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HNWR.
Where is Mode-S 3DF741 registered?
Mode-S code 3DF741 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DF741 broadcasting right now?
Yes. Mode-S 3DF741 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DF741, octal 17373501, decimal 4,060,993.
What flights does 3DF741 operate?
Mode-S 3DF741 has broadcast 2 distinct callsigns, including HUMMEL1, NRW1.