Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C542C

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C542C
Octal
17052054
Decimal
3,953,708
Country
DE
Tail
D-AEAL
Type
A306
No current signal · last broadcast 2h ago
Flights observed
180
Distinct callsigns
20
Country
DE
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 3C542C.

Country allocation

The ICAO 24-bit address 3C542C 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 - 8 2026-07-12
BCS2FC - 6 2026-06-24
BCS1LG - 6 2026-06-24
BCS21G - 5 2026-07-03
BCS6717 - 4 2026-07-11
BCS5QC - 4 2026-07-11
BCS57D - 4 2026-07-13
BCS5547 - 4 2026-07-14
BCS3YK - 4 2026-07-13
BCS13G European Air Transport 4 2026-06-07
BCS6GA - 3 2026-06-26
BCS6756 - 3 2026-07-02
BCS6360 - 3 2026-06-27
BCS62B - 3 2026-07-02
BCS5GU - 3 2026-07-03
BCS48D - 3 2026-06-26
BCS42M - 3 2026-06-26
BCS3UP European Air Transport 3 2026-06-03
BCS39G - 3 2026-07-02
BCS35P - 3 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BCS5547 - Jul 14, 20:05 UTCJul 14, 21:10 UTC1h 5m
2026-07-14 BCS5546 LEJ → WAW Jul 14, 02:55 UTCJul 14, 03:50 UTC55m
2026-07-13 BCS3YK OPO → LEJ Jul 13, 19:25 UTCJul 13, 21:50 UTC2h 25m
2026-07-13 BCS57D - Jul 13, 04:10 UTCJul 13, 05:01 UTC50m
2026-07-12 BCS73B - Jul 12, 21:40 UTCJul 12, 23:45 UTC2h 5m
2026-07-12 BCS2WP FRA → LEJ Jul 12, 12:05 UTCJul 12, 12:40 UTC35m
2026-07-11 BCS6717 - Jul 11, 15:40 UTCJul 11, 16:40 UTC1h 0m
2026-07-11 BCS6740 BRU → LHR Jul 11, 12:45 UTCJul 11, 13:40 UTC55m
2026-07-11 BCS2885 DUB → BRU Jul 11, 07:20 UTCJul 11, 08:35 UTC1h 15m
2026-07-11 BCS5QC LEJ → DUB Jul 11, 03:20 UTCJul 11, 05:05 UTC1h 45m
2026-07-09 BCS9TC - Jul 9, 21:15 UTCJul 9, 23:15 UTC2h 0m
2026-07-08 BCS36V - Jul 8, 18:20 UTCJul 8, 19:10 UTC50m
2026-07-08 BCS5WE - Jul 8, 06:00 UTCJul 8, 07:00 UTC1h 0m
2026-07-08 BCS198 - Jul 8, 01:40 UTCJul 8, 03:40 UTC2h 0m
2026-07-07 BCS55K BCN → LEJ Jul 7, 20:00 UTCJul 7, 22:10 UTC2h 10m
2026-07-07 BCS3LR LEJ → BCN Jul 7, 02:00 UTCJul 7, 03:55 UTC1h 55m
2026-07-06 BCS48B - Jul 6, 21:20 UTCJul 6, 22:25 UTC1h 5m
2026-07-05 BCS90Y LEJ → CDG Jul 5, 21:30 UTCJul 5, 22:40 UTC1h 10m
2026-07-03 BCS5GU AMS → LEJ Jul 3, 21:30 UTCJul 3, 22:20 UTC50m
2026-07-03 BCS21G LEJ → AMS Jul 3, 02:05 UTCJul 3, 03:05 UTC1h 0m
2026-07-02 BCS39G - Jul 2, 22:00 UTCJul 2, 23:05 UTC1h 5m
2026-07-02 BCS35P MXP → LHR Jul 2, 18:20 UTCJul 2, 19:50 UTC1h 30m
2026-07-02 BCS6756 - Jul 2, 08:20 UTCJul 2, 10:00 UTC1h 40m
2026-07-02 BCS62B LEJ → LTN Jul 2, 02:05 UTCJul 2, 03:30 UTC1h 25m
2026-07-01 BCS167 CGN → LEJ Jul 1, 21:10 UTCJul 1, 21:55 UTC45m
2026-07-01 BCS202P DUB → CGN Jul 1, 04:35 UTCJul 1, 06:00 UTC1h 25m
2026-07-01 BCS5QC EMA → DUB Jul 1, 02:20 UTCJul 1, 03:00 UTC40m
2026-06-30 BCS5NR MXP → EMA Jun 30, 22:40 UTCJul 1, 00:20 UTC1h 40m
2026-06-30 BCS5709 - Jun 30, 18:50 UTCJun 30, 20:50 UTC2h 0m
2026-06-30 BCS5706 LEJ → OTP Jun 30, 03:10 UTCJun 30, 04:50 UTC1h 40m
2026-06-29 BCS7JG MAD → LEJ Jun 29, 20:00 UTCJun 29, 22:24 UTC2h 25m
2026-06-27 BCS6360 FRA → MAD Jun 27, 19:45 UTCJun 27, 21:50 UTC2h 5m
2026-06-27 BCS6359 MAD → FRA Jun 27, 15:30 UTCJun 27, 17:44 UTC2h 15m
2026-06-27 BCS7CK MXP → MAD Jun 27, 01:15 UTCJun 27, 02:55 UTC1h 40m
2026-06-26 BCS42M - Jun 26, 18:29 UTCJun 26, 19:39 UTC1h 10m
2026-06-26 BCS48D - Jun 26, 06:00 UTCJun 26, 07:00 UTC1h 0m
2026-06-26 BCS6GA BRU → MXP Jun 26, 01:15 UTCJun 26, 02:14 UTC1h 0m
2026-06-25 BCS2UR MAD → BRU Jun 25, 20:59 UTCJun 25, 22:34 UTC1h 35m
2026-06-25 BCS6725 AMS → MAD Jun 25, 15:24 UTCJun 25, 17:34 UTC2h 10m
2026-06-25 BCS72E MAD → AMS Jun 25, 11:25 UTCJun 25, 13:20 UTC1h 55m
2026-06-25 BCS10K LEJ → MAD Jun 25, 02:10 UTCJun 25, 04:25 UTC2h 15m
2026-06-24 BCS1LG LIS → LEJ Jun 24, 18:55 UTCJun 24, 21:44 UTC2h 50m
2026-06-24 BCS2FC - Jun 24, 05:20 UTCJun 24, 06:25 UTC1h 5m
2026-06-24 BCS73B - Jun 24, 00:49 UTCJun 24, 02:40 UTC1h 50m
2026-06-23 BCS3265 - Jun 23, 20:19 UTCJun 23, 21:14 UTC55m
2026-06-23 BCS51M - Jun 23, 18:25 UTCJun 23, 18:50 UTC25m
2026-06-23 BCS3906 - Jun 23, 05:59 UTCJun 23, 06:24 UTC25m
2026-06-23 BCS3264 - Jun 23, 03:09 UTCJun 23, 04:14 UTC1h 5m
2026-06-22 BCS55K BCN → LEJ Jun 22, 20:00 UTCJun 22, 21:59 UTC2h 0m
2026-06-22 BCS3LR LEJ → BCN Jun 22, 00:20 UTCJun 22, 02:10 UTC1h 50m

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

Mode-S 3C542C frequently asked

What is Mode-S code 3C542C?
3C542C is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AEAL.
Where is Mode-S 3C542C registered?
Mode-S code 3C542C is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C542C broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C542C, octal 17052054, decimal 3,953,708.
What flights does 3C542C operate?
Mode-S 3C542C has broadcast 20 distinct callsigns, including BCS73B, BCS2FC, BCS1LG, BCS21G, BCS6717.