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sensors Mode-S transponder

3CD43B

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-CHRF · CESSNA 525B Citation CJ3

Hex
3CD43B
Octal
17152073
Decimal
3,986,491
Country
DE
Tail
D-CHRF
Type
C25B
No current signal · last broadcast 7d ago
Flights observed
49
Distinct callsigns
9
Country
DE
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 3CD43B.

Country allocation

The ICAO 24-bit address 3CD43B 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 9 distinct

Callsign Airline Flights Last seen
HHN910 Hahn Air 14 2026-07-26
HHN306 - 12 2026-07-21
HHN808 - 6 2026-07-16
HHN921 - 4 2026-07-03
HHN221 - 4 2026-07-12
HHN220 - 4 2026-07-10
HHN909 - 2 2026-07-02
HHN169 Hahn Air 2 2026-06-08
HHN291 Hahn Air 1 2026-05-04

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-07-26 HHN910 NUE → TFS Jul 26, 17:30 UTCJul 26, 18:15 UTC45m
2026-07-26 HHN910 NUE → TFS Jul 26, 13:25 UTCJul 26, 16:00 UTC2h 35m
2026-07-26 HHN910 NUE → TFS Jul 26, 10:40 UTCJul 26, 11:55 UTC1h 15m
2026-07-21 HHN306 - Jul 21, 14:20 UTCJul 21, 15:45 UTC1h 25m
2026-07-21 HHN306 FRL → GRZ Jul 21, 13:05 UTCJul 21, 13:50 UTC45m
2026-07-21 HHN306 ZRH → FRL Jul 21, 09:25 UTCJul 21, 10:15 UTC50m
2026-07-20 HHN306 - Jul 20, 12:05 UTCJul 20, 12:55 UTC50m
2026-07-19 HHN306 - Jul 19, 18:45 UTCJul 19, 20:00 UTC1h 15m
2026-07-19 HHN306 - Jul 19, 15:10 UTCJul 19, 15:25 UTC15m
2026-07-16 HHN808 ZRH → DUS Jul 16, 13:20 UTCJul 16, 14:10 UTC50m
2026-07-16 HHN808 - Jul 16, 11:05 UTCJul 16, 11:50 UTC45m
2026-07-12 HHN221 - Jul 12, 13:30 UTCJul 12, 15:50 UTC2h 20m
2026-07-11 HHN910 - Jul 11, 17:40 UTCJul 11, 18:05 UTC25m
2026-07-11 HHN910 - Jul 11, 15:40 UTCJul 11, 16:05 UTC25m
2026-07-10 HHN220 - Jul 10, 13:15 UTCJul 10, 15:20 UTC2h 5m
2026-07-07 HHN808 - Jul 7, 15:45 UTCJul 7, 17:25 UTC1h 40m
2026-07-06 HHN808 - Jul 6, 06:05 UTCJul 6, 07:20 UTC1h 15m
2026-07-03 HHN921 - Jul 3, 11:05 UTCJul 3, 12:40 UTC1h 35m
2026-07-03 HHN921 - Jul 3, 09:05 UTCJul 3, 10:05 UTC1h 0m
2026-07-02 HHN909 - Jul 2, 16:05 UTCJul 2, 17:00 UTC55m
2026-07-02 HHN909 - Jul 2, 14:40 UTCJul 2, 15:25 UTC45m
2026-06-23 HHN808 - Jun 23, 14:10 UTCJun 23, 15:44 UTC1h 35m
2026-06-23 HHN808 - Jun 23, 11:14 UTCJun 23, 12:35 UTC1h 20m
2026-06-21 HHN221 - Jun 21, 13:29 UTCJun 21, 15:54 UTC2h 25m
2026-06-19 HHN220 - Jun 19, 13:44 UTCJun 19, 16:04 UTC2h 20m
2026-06-15 HHN910 NUE → TFS Jun 15, 14:34 UTCJun 15, 16:55 UTC2h 20m
2026-06-15 HHN910 NUE → TFS Jun 15, 10:15 UTCJun 15, 12:25 UTC2h 10m
2026-06-10 HHN306 STR → NCE Jun 10, 17:05 UTCJun 10, 19:10 UTC2h 5m
2026-06-10 HHN306 STR → NCE Jun 10, 14:05 UTCJun 10, 15:40 UTC1h 35m
2026-06-10 HHN910 NUE → TFS Jun 10, 11:35 UTCJun 10, 12:55 UTC1h 20m
2026-06-09 HHN910 NUE → TFS Jun 9, 09:20 UTCJun 9, 11:30 UTC2h 10m
2026-06-08 HHN169 DUS → BER Jun 8, 08:15 UTCJun 8, 10:05 UTC1h 50m
2026-05-25 HHN221 PMI → DUS May 25, 13:35 UTCMay 25, 15:50 UTC2h 15m
2026-05-22 HHN220 DUS → PMI May 22, 10:10 UTCMay 22, 12:15 UTC2h 5m
2026-05-10 HHN221 PMI → DUS May 10, 13:10 UTCMay 10, 15:19 UTC2h 10m
2026-05-09 HHN910 NUE → TFS May 9, 17:35 UTCMay 9, 18:05 UTC30m
2026-05-09 HHN910 NUE → TFS May 9, 13:55 UTCMay 9, 15:35 UTC1h 40m
2026-05-09 HHN910 NUE → TFS May 9, 10:30 UTCMay 9, 11:50 UTC1h 20m
2026-05-08 HHN220 DUS → PMI May 8, 13:15 UTCMay 8, 15:30 UTC2h 15m
2026-05-08 HHN306 STR → NCE May 8, 08:34 UTCMay 8, 09:54 UTC1h 20m
2026-05-07 HHN306 STR → NCE May 7, 17:15 UTCMay 7, 19:10 UTC1h 55m
2026-05-05 HHN306 STR → NCE May 5, 06:45 UTCMay 5, 08:50 UTC2h 5m
2026-05-05 HHN306 STR → NCE May 5, 04:15 UTCMay 5, 05:40 UTC1h 25m
2026-05-04 HHN921 DUS → TIV May 4, 15:20 UTCMay 4, 16:00 UTC40m
2026-05-04 HHN921 DUS → TIV May 4, 12:15 UTCMay 4, 14:40 UTC2h 25m
2026-05-04 HHN291 FMM → DUS May 4, 08:05 UTCMay 4, 10:25 UTC2h 20m
2026-05-02 HHN910 NUE → TFS May 2, 11:35 UTCMay 2, 12:50 UTC1h 15m
2026-04-30 HHN910 NUE → TFS Apr 30, 10:35 UTCApr 30, 12:05 UTC1h 30m
2026-04-29 HHN169 DUS → BER Apr 29, 12:15 UTCApr 29, 13:00 UTC45m

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

Mode-S 3CD43B frequently asked

What is Mode-S code 3CD43B?
3CD43B is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-CHRF.
Where is Mode-S 3CD43B registered?
Mode-S code 3CD43B is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3CD43B broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3CD43B, octal 17152073, decimal 3,986,491.
What flights does 3CD43B operate?
Mode-S 3CD43B has broadcast 9 distinct callsigns, including HHN910, HHN306, HHN808, HHN921, HHN221.