Apparatus

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sensors Mode-S transponder

3CEA40

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-CQAA · LEARJET 45

Hex
3CEA40
Octal
17165100
Decimal
3,992,128
Country
DE
Tail
D-CQAA
Type
LJ45
No current signal · last broadcast 7d ago
Flights observed
91
Distinct callsigns
1
Country
DE
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 3CEA40.

Country allocation

The ICAO 24-bit address 3CEA40 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
QAJ1 - 91 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QAJ1 NUE → CGN Jul 14, 06:50 UTCJul 14, 07:25 UTC35m
2026-07-13 QAJ1 - Jul 13, 16:45 UTCJul 13, 17:25 UTC40m
2026-07-13 QAJ1 - Jul 13, 14:35 UTCJul 13, 16:10 UTC1h 35m
2026-07-13 QAJ1 - Jul 13, 12:55 UTCJul 13, 13:30 UTC35m
2026-07-13 QAJ1 - Jul 13, 10:05 UTCJul 13, 11:45 UTC1h 40m
2026-07-13 QAJ1 - Jul 13, 08:25 UTCJul 13, 08:55 UTC30m
2026-07-11 QAJ1 - Jul 11, 11:25 UTCJul 11, 11:45 UTC20m
2026-07-11 QAJ1 RZE → DTM Jul 11, 09:25 UTCJul 11, 10:50 UTC1h 25m
2026-07-11 QAJ1 - Jul 11, 07:05 UTCJul 11, 08:30 UTC1h 25m
2026-07-10 QAJ1 BRS → CGN Jul 10, 15:15 UTCJul 10, 16:20 UTC1h 5m
2026-07-10 QAJ1 BUD → BRS Jul 10, 11:30 UTCJul 10, 13:50 UTC2h 20m
2026-07-09 QAJ1 - Jul 9, 20:05 UTCJul 9, 21:55 UTC1h 50m
2026-07-09 QAJ1 - Jul 9, 15:40 UTCJul 9, 18:15 UTC2h 35m
2026-07-08 QAJ1 - Jul 8, 14:45 UTCJul 8, 15:05 UTC20m
2026-07-08 QAJ1 FAO → FRA Jul 8, 11:35 UTCJul 8, 14:10 UTC2h 35m
2026-07-08 QAJ1 CGN → FAO Jul 8, 07:30 UTCJul 8, 10:10 UTC2h 40m
2026-07-07 QAJ1 - Jul 7, 15:00 UTCJul 7, 15:20 UTC20m
2026-07-07 QAJ1 - Jul 7, 10:45 UTCJul 7, 14:05 UTC3h 20m
2026-07-07 QAJ1 - Jul 7, 06:10 UTCJul 7, 08:40 UTC2h 30m
2026-07-05 QAJ1 - Jul 5, 14:05 UTCJul 5, 14:25 UTC20m
2026-07-05 QAJ1 - Jul 5, 10:05 UTCJul 5, 13:05 UTC3h 0m
2026-07-05 QAJ1 - Jul 5, 07:40 UTCJul 5, 09:00 UTC1h 20m
2026-07-04 QAJ1 - Jul 4, 10:05 UTCJul 5, 09:00 UTC22h 55m
2026-07-04 QAJ1 - Jul 4, 09:15 UTCJul 5, 08:00 UTC22h 45m
2026-07-03 QAJ1 - Jul 3, 15:10 UTCJul 3, 15:35 UTC25m
2026-07-03 QAJ1 - Jul 3, 11:15 UTCJul 3, 13:20 UTC2h 5m
2026-07-03 QAJ1 - Jul 3, 05:55 UTCJul 3, 08:10 UTC2h 15m
2026-07-02 QAJ1 - Jul 2, 13:30 UTCJul 2, 16:20 UTC2h 50m
2026-07-02 QAJ1 - Jul 2, 09:50 UTCJul 2, 12:25 UTC2h 35m
2026-06-28 QAJ1 - Jun 28, 15:09 UTCJun 28, 15:29 UTC20m
2026-06-28 QAJ1 TRD → PAD Jun 28, 12:39 UTCJun 28, 14:30 UTC1h 50m
2026-06-28 QAJ1 CGN → TRD Jun 28, 07:54 UTCJun 28, 09:39 UTC1h 45m
2026-06-27 QAJ1 - Jun 27, 13:49 UTCJun 27, 14:09 UTC20m
2026-06-27 QAJ1 SOU → FMO Jun 27, 11:55 UTCJun 27, 12:55 UTC1h 0m
2026-06-27 QAJ1 CGN → SOU Jun 27, 08:10 UTCJun 27, 09:15 UTC1h 5m
2026-06-26 QAJ1 - Jun 26, 14:59 UTCJun 26, 15:15 UTC15m
2026-06-26 QAJ1 - Jun 26, 12:14 UTCJun 26, 14:05 UTC1h 50m
2026-06-26 QAJ1 - Jun 26, 08:05 UTCJun 26, 09:55 UTC1h 50m
2026-06-25 QAJ1 - Jun 25, 18:00 UTCJun 25, 18:45 UTC45m
2026-06-25 QAJ1 - Jun 25, 16:09 UTCJun 25, 17:14 UTC1h 5m
2026-06-25 QAJ1 - Jun 25, 08:50 UTCJun 25, 10:15 UTC1h 25m
2026-06-24 QAJ1 - Jun 24, 09:34 UTCJun 24, 11:45 UTC2h 10m
2026-06-24 QAJ1 CGN → OSL Jun 24, 07:05 UTCJun 24, 08:35 UTC1h 30m
2026-06-23 QAJ1 - Jun 23, 14:10 UTCJun 23, 14:29 UTC20m
2026-06-23 QAJ1 - Jun 23, 10:39 UTCJun 23, 12:45 UTC2h 5m
2026-06-23 QAJ1 - Jun 23, 06:09 UTCJun 23, 07:45 UTC1h 35m
2026-06-21 QAJ1 - Jun 21, 10:40 UTCJun 21, 13:04 UTC2h 25m
2026-06-21 QAJ1 - Jun 21, 04:54 UTCJun 21, 08:54 UTC4h 0m
2026-06-20 QAJ1 - Jun 20, 14:35 UTCJun 20, 14:44 UTC10m
2026-06-20 QAJ1 - Jun 20, 11:09 UTCJun 20, 13:55 UTC2h 45m

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

Mode-S 3CEA40 frequently asked

What is Mode-S code 3CEA40?
3CEA40 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-CQAA.
Where is Mode-S 3CEA40 registered?
Mode-S code 3CEA40 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3CEA40 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 3CEA40, octal 17165100, decimal 3,992,128.
What flights does 3CEA40 operate?
Mode-S 3CEA40 has broadcast 1 distinct callsign, including QAJ1.