Apparatus

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sensors Mode-S transponder

3C5423

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AEAC · AIRBUS A-300-600

Hex
3C5423
Octal
17052043
Decimal
3,953,699
Country
DE
Tail
D-AEAC
Type
A306
No current signal · last broadcast 10h ago
Flights observed
174
Distinct callsigns
20
Country
DE
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 3C5423.

Country allocation

The ICAO 24-bit address 3C5423 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 20 distinct

Callsign Airline Flights Last seen
BCS8PA - 5 2026-07-11
BCS5GU - 5 2026-07-02
BCS57D - 5 2026-06-26
BCS9TC - 4 2026-07-10
BCS8AA - 4 2026-07-07
BCS7JG - 4 2026-07-08
BCS5WE - 4 2026-07-09
BCS5547 - 4 2026-07-13
BCS5546 - 4 2026-07-13
BCS48D - 4 2026-07-07
BCS42M - 4 2026-07-07
BCS41E - 4 2026-07-08
BCS3UP - 4 2026-06-26
BCS36V - 4 2026-07-09
BCS198 - 4 2026-07-09
BCS1443 - 4 2026-07-02
BCS6GA - 3 2026-07-07
BCS51M European Air Transport 3 2026-06-05
BCS3LR - 3 2026-07-14
BCS3906 European Air Transport 3 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BCS3LR LEJ → BCN Jul 14, 02:05 UTCJul 14, 04:05 UTC2h 0m
2026-07-13 BCS5547 - Jul 13, 19:55 UTCJul 13, 21:00 UTC1h 5m
2026-07-13 BCS5546 LEJ → WAW Jul 13, 02:40 UTCJul 13, 03:40 UTC1h 0m
2026-07-12 BCS25C BRU → LEJ Jul 12, 20:15 UTCJul 12, 21:05 UTC50m
2026-07-12 BCS6741 LHR → BRU Jul 12, 06:50 UTCJul 12, 07:31 UTC40m
2026-07-11 BCS6778 - Jul 11, 20:40 UTCJul 11, 21:25 UTC45m
2026-07-11 BCS89N - Jul 11, 17:50 UTCJul 11, 18:30 UTC40m
2026-07-11 BCS6731 - Jul 11, 15:05 UTCJul 11, 15:55 UTC50m
2026-07-11 BCS223 - Jul 11, 09:00 UTCJul 11, 09:40 UTC40m
2026-07-11 BCS8PA LEJ → LTN Jul 11, 02:20 UTCJul 11, 03:35 UTC1h 15m
2026-07-10 BCS9TC - Jul 10, 22:10 UTCJul 11, 00:05 UTC1h 55m
2026-07-09 BCS36V - Jul 9, 18:20 UTCJul 9, 19:10 UTC50m
2026-07-09 BCS5WE - Jul 9, 06:00 UTCJul 9, 07:00 UTC1h 0m
2026-07-09 BCS198 - Jul 9, 01:45 UTCJul 9, 03:40 UTC1h 55m
2026-07-08 BCS7JG - Jul 8, 19:55 UTCJul 8, 22:20 UTC2h 25m
2026-07-08 BCS230P BER → MAD Jul 8, 11:35 UTCJul 8, 14:05 UTC2h 30m
2026-07-08 BCS6040 MAD → BER Jul 8, 06:50 UTCJul 8, 09:25 UTC2h 35m
2026-07-08 BCS41E - Jul 8, 01:35 UTCJul 8, 03:25 UTC1h 50m
2026-07-07 BCS8AA MXP → BRU Jul 7, 22:30 UTCJul 7, 23:35 UTC1h 5m
2026-07-07 BCS42M - Jul 7, 18:25 UTCJul 7, 19:40 UTC1h 15m
2026-07-07 BCS48D - Jul 7, 06:30 UTCJul 7, 07:30 UTC1h 0m
2026-07-07 BCS6GA - Jul 7, 01:20 UTCJul 7, 02:20 UTC1h 0m
2026-07-06 BCS2UR - Jul 6, 20:15 UTCJul 6, 22:10 UTC1h 55m
2026-07-06 BCS10K LEJ → MAD Jul 6, 00:00 UTCJul 6, 02:15 UTC2h 15m
2026-07-03 BCS852P - Jul 3, 04:45 UTCJul 3, 05:35 UTC50m
2026-07-03 BCS20A LEJ → CPH Jul 3, 02:10 UTCJul 3, 03:00 UTC50m
2026-07-02 BCS5GU - Jul 2, 21:35 UTCJul 2, 22:25 UTC50m
2026-07-02 BCS1443 - Jul 2, 05:15 UTCJul 2, 05:50 UTC35m
2026-07-02 BCS8PA LEJ → STN Jul 2, 01:40 UTCJul 2, 02:55 UTC1h 15m
2026-07-01 BCS5547 - Jul 1, 20:00 UTCJul 1, 21:00 UTC1h 0m
2026-07-01 BCS5546 LEJ → WAW Jul 1, 04:15 UTCJul 1, 05:30 UTC1h 15m
2026-06-27 BCS2RA LIS → LEJ Jun 27, 20:49 UTCJun 27, 23:39 UTC2h 50m
2026-06-27 BCS18K BCN → LIS Jun 27, 06:35 UTCJun 27, 08:05 UTC1h 30m
2026-06-27 BCS3LR LEJ → BCN Jun 27, 02:39 UTCJun 27, 04:34 UTC1h 55m
2026-06-26 BCS8213 OPO → BRU Jun 26, 19:04 UTCJun 26, 21:35 UTC2h 30m
2026-06-26 BCS57D - Jun 26, 05:35 UTCJun 26, 06:29 UTC55m
2026-06-26 BCS3UP - Jun 26, 01:24 UTCJun 26, 02:54 UTC1h 30m
2026-06-25 BCS2665 - Jun 25, 22:10 UTCJun 25, 22:49 UTC40m
2026-06-25 BCS229 - Jun 25, 19:39 UTCJun 25, 19:59 UTC20m
2026-06-25 BCS2230 LEJ → STN Jun 25, 03:59 UTCJun 25, 05:15 UTC1h 15m
2026-06-24 BCS5GU - Jun 24, 21:34 UTCJun 24, 22:29 UTC55m
2026-06-24 BCS1443 - Jun 24, 05:09 UTCJun 24, 05:44 UTC35m
2026-06-24 BCS8PA LEJ → STN Jun 24, 01:49 UTCJun 24, 03:00 UTC1h 10m
2026-06-23 BCS7JG - Jun 23, 20:04 UTCJun 23, 22:29 UTC2h 25m
2026-06-23 BCS41E BRU → MAD Jun 23, 01:25 UTCJun 23, 03:20 UTC1h 55m
2026-06-22 BCS8AA MXP → BRU Jun 22, 22:30 UTCJun 22, 23:39 UTC1h 10m
2026-06-22 BCS42M - Jun 22, 18:30 UTCJun 22, 19:34 UTC1h 5m
2026-06-22 BCS48D - Jun 22, 02:59 UTCJun 22, 04:00 UTC1h 0m
2026-06-21 BCS67R LEJ → MXP Jun 21, 21:44 UTCJun 21, 23:00 UTC1h 15m
2026-06-21 BCS5GU - Jun 21, 10:29 UTCJun 21, 11:24 UTC55m

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

Mode-S 3C5423 frequently asked

What is Mode-S code 3C5423?
3C5423 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AEAC.
Where is Mode-S 3C5423 registered?
Mode-S code 3C5423 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C5423 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C5423, octal 17052043, decimal 3,953,699.
What flights does 3C5423 operate?
Mode-S 3C5423 has broadcast 20 distinct callsigns, including BCS8PA, BCS5GU, BCS57D, BCS9TC, BCS8AA.