Apparatus

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sensors Mode-S transponder

3E017B

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HRTJ · AIRBUS HELICOPTERS EC-135/635

Hex
3E017B
Octal
17400573
Decimal
4,063,611
Country
DE
Tail
D-HRTJ
Type
EC35
No current signal · last broadcast 1d ago
Flights observed
117
Distinct callsigns
2
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3E017B.

Country allocation

The ICAO 24-bit address 3E017B 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
CHX49 - 115 2026-07-08
DHRTJ - 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 CHX49 - Jul 8, 09:45 UTCJul 8, 10:15 UTC30m
2026-07-07 CHX49 - Jul 7, 12:05 UTCJul 7, 12:15 UTC10m
2026-07-07 CHX49 - Jul 7, 06:35 UTCJul 7, 06:45 UTC10m
2026-07-06 CHX49 - Jul 6, 09:20 UTCJul 6, 09:40 UTC20m
2026-07-05 CHX49 - Jul 5, 18:15 UTCJul 5, 18:25 UTC10m
2026-07-05 CHX49 - Jul 5, 09:30 UTCJul 5, 09:45 UTC15m
2026-07-04 CHX49 - Jul 4, 14:25 UTCJul 4, 16:00 UTC1h 35m
2026-07-02 CHX49 - Jul 2, 14:30 UTCJul 2, 15:00 UTC30m
2026-07-02 CHX49 - Jul 2, 11:20 UTCJul 2, 11:35 UTC15m
2026-07-02 CHX49 - Jul 2, 10:30 UTCJul 2, 10:40 UTC10m
2026-07-02 CHX49 - Jul 2, 09:05 UTCJul 2, 09:45 UTC40m
2026-07-01 CHX49 - Jul 1, 14:55 UTCJul 1, 15:30 UTC35m
2026-07-01 CHX49 - Jul 1, 12:05 UTCJul 1, 12:55 UTC50m
2026-06-30 CHX49 - Jun 30, 18:25 UTCJun 30, 18:35 UTC10m
2026-06-30 CHX49 - Jun 30, 12:30 UTCJun 30, 12:40 UTC10m
2026-06-30 CHX49 - Jun 30, 11:10 UTCJun 30, 11:25 UTC15m
2026-06-29 CHX49 - Jun 29, 18:49 UTCJun 29, 19:00 UTC10m
2026-06-29 CHX49 - Jun 29, 16:55 UTCJun 29, 17:14 UTC20m
2026-06-29 CHX49 - Jun 29, 08:35 UTCJun 29, 08:44 UTC10m
2026-06-29 CHX49 - Jun 29, 07:05 UTCJun 29, 07:15 UTC10m
2026-06-29 CHX49 - Jun 29, 06:09 UTCJun 29, 06:19 UTC10m
2026-06-28 CHX49 - Jun 28, 18:29 UTCJun 28, 18:40 UTC10m
2026-06-28 CHX49 - Jun 28, 14:59 UTCJun 28, 16:05 UTC1h 5m
2026-06-28 CHX49 - Jun 28, 12:44 UTCJun 28, 13:25 UTC40m
2026-06-27 CHX49 - Jun 27, 17:20 UTCJun 27, 18:29 UTC1h 10m
2026-06-27 CHX49 - Jun 27, 10:45 UTCJun 27, 11:14 UTC30m
2026-06-27 CHX49 - Jun 27, 09:44 UTCJun 27, 10:05 UTC20m
2026-06-27 CHX49 - Jun 27, 07:49 UTCJun 27, 07:59 UTC10m
2026-06-26 CHX49 - Jun 26, 19:00 UTCJun 26, 19:30 UTC30m
2026-06-26 CHX49 - Jun 26, 15:34 UTCJun 26, 16:09 UTC35m
2026-06-26 CHX49 - Jun 26, 11:55 UTCJun 26, 12:34 UTC40m
2026-06-24 CHX49 - Jun 24, 17:45 UTCJun 24, 17:59 UTC15m
2026-06-24 CHX49 - Jun 24, 16:29 UTCJun 24, 16:59 UTC30m
2026-06-24 CHX49 - Jun 24, 11:29 UTCJun 24, 11:59 UTC30m
2026-06-23 CHX49 - Jun 23, 19:10 UTCJun 23, 19:29 UTC20m
2026-06-23 CHX49 - Jun 23, 16:14 UTCJun 23, 16:29 UTC15m
2026-06-23 CHX49 - Jun 23, 12:20 UTCJun 23, 12:35 UTC15m
2026-06-23 CHX49 - Jun 23, 11:04 UTCJun 23, 11:14 UTC10m
2026-06-23 CHX49 - Jun 23, 10:10 UTCJun 23, 10:19 UTC10m
2026-06-22 CHX49 - Jun 22, 17:10 UTCJun 22, 17:20 UTC10m
2026-06-22 CHX49 - Jun 22, 10:19 UTCJun 22, 10:30 UTC10m
2026-06-21 CHX49 - Jun 21, 16:39 UTCJun 21, 16:54 UTC15m
2026-06-21 CHX49 - Jun 21, 14:40 UTCJun 21, 14:54 UTC15m
2026-06-21 CHX49 - Jun 21, 13:50 UTCJun 21, 14:10 UTC20m
2026-06-20 CHX49 - Jun 20, 09:54 UTCJun 20, 11:30 UTC1h 35m
2026-06-19 CHX49 - Jun 19, 14:59 UTCJun 19, 15:14 UTC15m
2026-06-19 CHX49 - Jun 19, 13:59 UTCJun 19, 14:09 UTC10m
2026-06-19 CHX49 - Jun 19, 11:30 UTCJun 19, 11:45 UTC15m
2026-06-19 CHX49 - Jun 19, 10:39 UTCJun 19, 10:54 UTC15m
2026-06-19 CHX49 - Jun 19, 08:40 UTCJun 19, 08:50 UTC10m

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

Mode-S 3E017B frequently asked

What is Mode-S code 3E017B?
3E017B is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HRTJ.
Where is Mode-S 3E017B registered?
Mode-S code 3E017B is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3E017B 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 3E017B, octal 17400573, decimal 4,063,611.
What flights does 3E017B operate?
Mode-S 3E017B has broadcast 2 distinct callsigns, including CHX49, DHRTJ.