Apparatus

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sensors Mode-S transponder

3C542F

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C542F
Octal
17052057
Decimal
3,953,711
Country
DE
Tail
D-AEAO
Type
A306
No current signal · last broadcast 1d ago
Flights observed
214
Distinct callsigns
20
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3C542F.

Country allocation

The ICAO 24-bit address 3C542F 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 European Air Transport 6 2026-06-11
BCS5GU - 6 2026-07-05
BCS5709 - 6 2026-07-10
BCS1443 European Air Transport 6 2026-06-11
BCS8AA - 5 2026-07-01
BCS6756 - 5 2026-06-24
BCS62B - 5 2026-06-24
BCS5706 - 5 2026-07-10
BCS35P - 5 2026-06-24
BCS2WP - 5 2026-06-25
BCS5QC European Air Transport 4 2026-05-09
BCS5NR European Air Transport 4 2026-05-05
BCS5547 European Air Transport 4 2026-06-03
BCS5546 European Air Transport 4 2026-06-03
BCS48D - 4 2026-07-01
BCS48B - 4 2026-06-19
BCS42M - 4 2026-07-01
BCS41E - 4 2026-07-02
BCS2EV - 4 2026-06-19
BCS202P European Air Transport 4 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 BCS55G LEJ → BRU Jul 12, 21:30 UTCJul 12, 22:30 UTC1h 0m
2026-07-12 BCS451 EMA → LEJ Jul 12, 03:20 UTCJul 12, 04:45 UTC1h 25m
2026-07-10 BCS465 MXP → EMA Jul 10, 23:30 UTCJul 11, 01:00 UTC1h 30m
2026-07-10 BCS5709 - Jul 10, 17:10 UTCJul 10, 19:10 UTC2h 0m
2026-07-10 BCS5706 LEJ → OTP Jul 10, 03:20 UTCJul 10, 04:55 UTC1h 35m
2026-07-08 BCS1LG LIS → LEJ Jul 8, 19:05 UTCJul 8, 21:55 UTC2h 50m
2026-07-08 BCS2FC - Jul 8, 05:25 UTCJul 8, 06:35 UTC1h 10m
2026-07-08 BCS73B - Jul 8, 00:45 UTCJul 8, 02:40 UTC1h 55m
2026-07-07 BCS1491 AMS → LEJ Jul 7, 20:00 UTCJul 7, 20:50 UTC50m
2026-07-07 BCS21G - Jul 7, 01:45 UTCJul 7, 02:45 UTC1h 0m
2026-07-06 BCS3265 - Jul 6, 20:30 UTCJul 6, 21:35 UTC1h 5m
2026-07-06 BCS51M - Jul 6, 18:20 UTCJul 6, 18:50 UTC30m
2026-07-06 BCS3906 - Jul 6, 04:20 UTCJul 6, 04:45 UTC25m
2026-07-06 BCS3264 - Jul 6, 01:40 UTCJul 6, 02:45 UTC1h 5m
2026-07-05 BCS5GU AMS → LEJ Jul 5, 10:10 UTCJul 5, 11:00 UTC50m
2026-07-04 BCS21G - Jul 4, 02:30 UTCJul 4, 03:30 UTC1h 0m
2026-07-03 BCS55K BCN → LEJ Jul 3, 20:00 UTCJul 3, 21:55 UTC1h 55m
2026-07-03 BCS3LR LEJ → BCN Jul 3, 02:05 UTCJul 3, 03:55 UTC1h 50m
2026-07-02 BCS7JG MAD → LEJ Jul 2, 20:00 UTCJul 2, 22:20 UTC2h 20m
2026-07-02 BCS41E - Jul 2, 01:35 UTCJul 2, 03:35 UTC2h 0m
2026-07-01 BCS8AA MXP → BRU Jul 1, 22:15 UTCJul 1, 23:25 UTC1h 10m
2026-07-01 BCS42M - Jul 1, 18:25 UTCJul 1, 19:30 UTC1h 5m
2026-07-01 BCS48D - Jul 1, 06:00 UTCJul 1, 06:55 UTC55m
2026-07-01 BCS6GA BRU → MXP Jul 1, 01:25 UTCJul 1, 02:30 UTC1h 5m
2026-06-30 BCS2UR MAD → BRU Jun 30, 20:20 UTCJun 30, 22:10 UTC1h 50m
2026-06-30 BCS230P - Jun 30, 13:50 UTCJun 30, 15:40 UTC1h 50m
2026-06-30 BCS6036 MAD → FCO Jun 30, 09:10 UTCJun 30, 11:10 UTC2h 0m
2026-06-30 BCS41E - Jun 30, 01:40 UTCJun 30, 03:30 UTC1h 50m
2026-06-29 BCS8AA MXP → BRU Jun 29, 22:30 UTCJun 29, 23:29 UTC1h 0m
2026-06-29 BCS42M - Jun 29, 18:39 UTCJun 29, 19:44 UTC1h 5m
2026-06-29 BCS48D - Jun 29, 03:10 UTCJun 29, 04:04 UTC55m
2026-06-28 BCS67R LEJ → MXP Jun 28, 21:55 UTCJun 28, 22:59 UTC1h 5m
2026-06-28 BCS451 EMA → LEJ Jun 28, 03:29 UTCJun 28, 04:50 UTC1h 20m
2026-06-26 BCS465 MXP → EMA Jun 26, 23:49 UTCJun 27, 01:19 UTC1h 30m
2026-06-26 BCS5709 - Jun 26, 17:19 UTCJun 26, 19:09 UTC1h 50m
2026-06-26 BCS5706 LEJ → OTP Jun 26, 03:15 UTCJun 26, 04:55 UTC1h 40m
2026-06-25 BCS2WP FRA → LEJ Jun 25, 20:54 UTCJun 25, 21:35 UTC40m
2026-06-25 BCS6717 - Jun 25, 09:59 UTCJun 25, 11:10 UTC1h 10m
2026-06-25 BCS13G FRA → LTN Jun 25, 06:44 UTCJun 25, 07:54 UTC1h 10m
2026-06-25 BCS186 - Jun 25, 02:19 UTCJun 25, 03:04 UTC45m
2026-06-24 BCS39G - Jun 24, 22:10 UTCJun 24, 23:24 UTC1h 15m
2026-06-24 BCS35P MXP → LHR Jun 24, 18:34 UTCJun 24, 19:59 UTC1h 25m
2026-06-24 BCS6756 - Jun 24, 08:09 UTCJun 24, 09:39 UTC1h 30m
2026-06-24 BCS62B LEJ → LTN Jun 24, 02:15 UTCJun 24, 03:29 UTC1h 15m
2026-06-23 BCS39G - Jun 23, 21:49 UTCJun 23, 23:10 UTC1h 20m
2026-06-23 BCS35P MXP → LHR Jun 23, 18:14 UTCJun 23, 19:44 UTC1h 30m
2026-06-23 BCS6756 - Jun 23, 09:09 UTCJun 23, 10:49 UTC1h 40m
2026-06-23 BCS62B LEJ → LTN Jun 23, 02:09 UTCJun 23, 03:34 UTC1h 25m
2026-06-22 BCS3265 - Jun 22, 20:30 UTCJun 22, 21:30 UTC1h 0m
2026-06-22 BCS51M ORB → ORB Jun 22, 18:35 UTCJun 22, 19:05 UTC30m

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

Mode-S 3C542F frequently asked

What is Mode-S code 3C542F?
3C542F is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AEAO.
Where is Mode-S 3C542F registered?
Mode-S code 3C542F is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C542F 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 3C542F, octal 17052057, decimal 3,953,711.
What flights does 3C542F operate?
Mode-S 3C542F has broadcast 20 distinct callsigns, including BCS8PA, BCS5GU, BCS5709, BCS1443, BCS8AA.