Apparatus

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sensors Mode-S transponder

3C542E

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C542E
Octal
17052056
Decimal
3,953,710
Country
DE
Tail
D-AEAN
Type
A306
Broadcasting now · callsign BCS1443 · 1,775 ft
Flights observed
109
Distinct callsigns
20
Country
DE
Last broadcast
8m ago

Current position

3C542E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C542E 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
BCS73B - 6 2026-06-16
BCS5547 European Air Transport 4 2026-06-19
BCS5546 - 4 2026-06-19
BCS2FC - 4 2026-06-16
BCS1LG - 4 2026-06-16
BCS186 European Air Transport 4 2026-06-09
BCS5QC European Air Transport 3 2026-06-04
BCS5NR European Air Transport 3 2026-06-03
BCS57D - 3 2026-06-15
BCS3YK European Air Transport 3 2026-06-15
BCS2WP European Air Transport 3 2026-06-09
BCS202P European Air Transport 3 2026-06-12
BCS90Y - 2 2026-06-21
BCS8PA - 2 2026-06-23
BCS6GA European Air Transport 2 2026-05-13
BCS5GU - 2 2026-06-17
BCS5709 European Air Transport 2 2026-06-03
BCS5706 European Air Transport 2 2026-06-03
BCS48D - 2 2026-05-13
BCS44C European Air Transport 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 BCS1443 - Jun 23, 05:04 UTCJun 23, 05:29 UTC25m
2026-06-23 BCS8PA LEJ → STN Jun 23, 01:20 UTCJun 23, 02:40 UTC1h 20m
2026-06-22 BCS48B - Jun 22, 21:14 UTCJun 22, 22:15 UTC1h 0m
2026-06-21 BCS90Y LEJ → CDG Jun 21, 21:39 UTCJun 21, 22:54 UTC1h 15m
2026-06-20 BCS2RA LIS → LIS Jun 20, 20:45 UTCJun 20, 23:29 UTC2h 45m
2026-06-20 BCS18K BCN → LIS Jun 20, 06:35 UTCJun 20, 08:14 UTC1h 40m
2026-06-20 BCS3LR LEJ → BCN Jun 20, 02:44 UTCJun 20, 04:39 UTC1h 55m
2026-06-19 BCS5547 WAW → LEJ Jun 19, 20:04 UTCJun 19, 20:59 UTC55m
2026-06-19 BCS5546 LEJ → WAW Jun 19, 02:50 UTCJun 19, 03:44 UTC55m
2026-06-18 BCS33G - Jun 18, 20:35 UTCJun 18, 21:15 UTC40m
2026-06-18 BCS26N LEJ → MUC Jun 18, 03:10 UTCJun 18, 03:55 UTC45m
2026-06-17 BCS5GU AMS → LEJ Jun 17, 21:20 UTCJun 17, 22:10 UTC50m
2026-06-17 BCS21G - Jun 17, 01:50 UTCJun 17, 02:45 UTC55m
2026-06-16 BCS1LG LIS → LEJ Jun 16, 19:00 UTCJun 16, 22:00 UTC3h 1m
2026-06-16 BCS2FC - Jun 16, 05:20 UTCJun 16, 06:20 UTC1h 0m
2026-06-16 BCS73B - Jun 16, 00:35 UTCJun 16, 02:29 UTC1h 55m
2026-06-15 BCS3YK OPO → LEJ Jun 15, 19:10 UTCJun 15, 21:55 UTC2h 45m
2026-06-15 BCS57D - Jun 15, 04:00 UTCJun 15, 04:50 UTC50m
2026-06-14 BCS73B LEJ → VIT Jun 14, 21:40 UTCJun 14, 23:35 UTC1h 55m
2026-06-13 BCS863 BRU → LEJ Jun 13, 21:20 UTCJun 13, 22:25 UTC1h 5m
2026-06-13 BCS4913 EAP → LEJ Jun 13, 18:50 UTCJun 13, 19:20 UTC30m
2026-06-13 BCS4958 GVA → BSL Jun 13, 05:30 UTCJun 13, 06:05 UTC35m
2026-06-13 BCS53A LEJ → GVA Jun 13, 03:00 UTCJun 13, 04:05 UTC1h 4m
2026-06-12 BCS169 CGN → LEJ Jun 12, 22:15 UTCJun 12, 22:50 UTC35m
2026-06-12 BCS202P STN → STN Jun 12, 19:25 UTCJun 12, 20:10 UTC45m
2026-06-12 BCS2230 LEJ → STN Jun 12, 03:55 UTCJun 12, 05:15 UTC1h 20m
2026-06-11 BCS5547 WAW → LEJ Jun 11, 19:55 UTCJun 11, 20:55 UTC1h 0m
2026-06-11 BCS5546 LEJ → WAW Jun 11, 06:20 UTCJun 11, 07:15 UTC55m
2026-06-10 BCS5GU AMS → LEJ Jun 10, 21:25 UTCJun 10, 22:20 UTC55m
2026-06-10 BCS1443 LEJ → LEJ Jun 10, 06:35 UTCJun 10, 07:10 UTC35m
2026-06-10 BCS8PA LEJ → STN Jun 10, 01:45 UTCJun 10, 03:00 UTC1h 15m
2026-06-09 BCS2WP FRA → LEJ Jun 9, 20:50 UTCJun 9, 21:30 UTC40m
2026-06-09 BCS186 LEJ → FRA Jun 9, 02:35 UTCJun 9, 03:10 UTC35m
2026-06-08 BCS3YK OPO → LEJ Jun 8, 19:10 UTCJun 8, 21:35 UTC2h 25m
2026-06-08 BCS57D VIT → OPO Jun 8, 04:15 UTCJun 8, 05:05 UTC50m
2026-06-07 BCS198 LEJ → CGN Jun 7, 23:20 UTCJun 8, 01:20 UTC2h 0m
2026-06-07 BCS2WP FRA → LEJ Jun 7, 12:20 UTCJun 7, 13:00 UTC40m
2026-06-06 BCS186 LEJ → FRA Jun 6, 02:25 UTCJun 6, 03:10 UTC45m
2026-06-05 BCS20D BSL → LEJ Jun 5, 20:40 UTCJun 5, 21:35 UTC55m
2026-06-05 BCS77G LEJ → BSL Jun 5, 03:50 UTCJun 5, 04:40 UTC50m
2026-06-04 BCS6TP BRU → LEJ Jun 4, 23:15 UTCJun 5, 00:05 UTC50m
2026-06-04 BCS202P STN → STN Jun 4, 04:55 UTCJun 4, 06:05 UTC1h 10m
2026-06-04 BCS5QC EMA → DUB Jun 4, 02:15 UTCJun 4, 02:50 UTC35m
2026-06-03 BCS5NR MXP → AOI Jun 3, 22:20 UTCJun 4, 00:10 UTC1h 50m
2026-06-03 BCS5709 MXP → LEJ Jun 3, 17:05 UTCJun 3, 18:55 UTC1h 50m
2026-06-03 BCS5706 LEJ → OTP Jun 3, 03:40 UTCJun 3, 05:25 UTC1h 45m
2026-06-02 BCS1LG LIS → LEJ Jun 2, 19:25 UTCJun 2, 22:20 UTC2h 55m
2026-06-02 BCS2FC - Jun 2, 05:20 UTCJun 2, 06:25 UTC1h 5m
2026-06-02 BCS73B LEJ → VIT Jun 2, 00:35 UTCJun 2, 02:40 UTC2h 5m
2026-06-01 BCS3YK OPO → LEJ Jun 1, 19:20 UTCJun 1, 22:05 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-AEAN page for operator, model, and routing details .

Mode-S 3C542E frequently asked

What is Mode-S code 3C542E?
3C542E is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AEAN.
Where is Mode-S 3C542E registered?
Mode-S code 3C542E is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C542E broadcasting right now?
Yes. Mode-S 3C542E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C542E, octal 17052056, decimal 3,953,710.
What flights does 3C542E operate?
Mode-S 3C542E has broadcast 20 distinct callsigns, including BCS73B, BCS5547, BCS5546, BCS2FC, BCS1LG.