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
Broadcasting now · callsign BCS5547 · 30,000 ft
Flights observed
239
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 21:30 UTC

Current position

3C542F is currently broadcasting. Map zoomed to live position.

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
BCS2WP European Air Transport 7 2026-07-26
BCS8PA European Air Transport 6 2026-06-11
BCS8AA - 6 2026-07-21
BCS6756 European Air Transport 6 2026-07-25
BCS5GU - 6 2026-07-05
BCS5709 - 6 2026-07-10
BCS35P European Air Transport 6 2026-07-26
BCS1443 European Air Transport 6 2026-06-11
BCS62B - 5 2026-06-24
BCS5706 - 5 2026-07-10
BCS5547 European Air Transport 5 2026-07-23
BCS5546 European Air Transport 5 2026-07-23
BCS48D - 5 2026-07-21
BCS42M European Air Transport 5 2026-07-21
BCS41E European Air Transport 5 2026-07-22
BCS186 European Air Transport 5 2026-07-25
BCS6GA European Air Transport 4 2026-07-21
BCS6717 European Air Transport 4 2026-07-26
BCS5QC European Air Transport 4 2026-05-09
BCS5NR European Air Transport 4 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BCS21G LEJ → AMS Jul 26, 20:20 UTCJul 26, 21:15 UTC55m
2026-07-26 BCS2WP FRA → LEJ Jul 26, 12:15 UTCJul 26, 12:50 UTC35m
2026-07-26 BCS6717 LTN → FRA Jul 26, 06:50 UTCJul 26, 07:55 UTC1h 5m
2026-07-26 BCS35P MXP → LHR Jul 26, 01:50 UTCJul 26, 03:30 UTC1h 40m
2026-07-25 BCS6756 LHR → LTN Jul 25, 21:55 UTCJul 25, 23:20 UTC1h 25m
2026-07-25 BCS13G FRA → LTN Jul 25, 18:35 UTCJul 25, 19:45 UTC1h 10m
2026-07-25 BCS186 LEJ → FRA Jul 25, 02:25 UTCJul 25, 03:10 UTC45m
2026-07-24 BCS752 BAH → LEJ Jul 24, 21:15 UTCJul 24, 22:25 UTC1h 10m
2026-07-24 BCS755 LTN → MXP Jul 24, 01:05 UTCJul 24, 02:05 UTC1h 0m
2026-07-23 BCS5547 WAW → LEJ Jul 23, 19:50 UTCJul 23, 20:50 UTC1h 0m
2026-07-23 BCS5546 LEJ → WAW Jul 23, 02:55 UTCJul 23, 04:00 UTC1h 5m
2026-07-22 BCS2WP FRA → LEJ Jul 22, 20:45 UTCJul 22, 21:25 UTC40m
2026-07-22 BCS6359 MAD → FRA Jul 22, 15:30 UTCJul 22, 17:30 UTC2h 0m
2026-07-22 BCS41E BRU → MAD Jul 22, 01:30 UTCJul 22, 03:30 UTC2h 0m
2026-07-21 BCS8AA MXP → BRU Jul 21, 22:30 UTCJul 21, 23:45 UTC1h 15m
2026-07-21 BCS42M NAP → MXP Jul 21, 18:30 UTCJul 21, 19:40 UTC1h 10m
2026-07-21 BCS48D - Jul 21, 05:55 UTCJul 21, 06:45 UTC50m
2026-07-21 BCS6GA BRU → MXP Jul 21, 04:20 UTCJul 21, 04:30 UTC10m
2026-07-21 BCS6GA BRU → MXP Jul 21, 01:10 UTCJul 21, 02:10 UTC1h 0m
2026-07-20 BCS2UR MAD → BRU Jul 20, 20:30 UTCJul 20, 22:20 UTC1h 50m
2026-07-18 BCS7CK - Jul 18, 02:29 UTCJul 18, 04:10 UTC1h 41m
2026-07-17 BCS37R MAD → MAD Jul 17, 22:20 UTCJul 18, 00:00 UTC1h 40m
2026-07-17 BCS6360 - Jul 17, 16:24 UTCJul 17, 18:34 UTC2h 10m
2026-07-17 BCS186 - Jul 17, 04:20 UTCJul 17, 04:49 UTC30m
2026-07-16 BCS840P BRU → LEJ Jul 16, 10:40 UTCJul 16, 11:40 UTC1h 0m
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

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?
Yes. Mode-S 3C542F is currently airborne.
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 BCS2WP, BCS8PA, BCS8AA, BCS6756, BCS5GU.