Apparatus

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sensors Mode-S transponder

3C70B5

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ALEU · BOEING 757-200

Hex
3C70B5
Octal
17070265
Decimal
3,961,013
Country
DE
Tail
D-ALEU
Type
B752
No current signal · last broadcast 13h ago
Flights observed
92
Distinct callsigns
19
Country
DE
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 3C70B5.

Country allocation

The ICAO 24-bit address 3C70B5 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 19 distinct

Callsign Airline Flights Last seen
BCS55K European Air Transport 20 2026-05-20
BCS3LR European Air Transport 19 2026-05-20
BCS9117 European Air Transport 10 2026-05-29
BCS9114 European Air Transport 10 2026-05-29
BCS7332 European Air Transport 7 2026-05-29
BCS7331 European Air Transport 6 2026-05-27
BCS4GC European Air Transport 4 2026-04-28
BCS1MU European Air Transport 3 2026-04-29
BCS138 European Air Transport 3 2026-05-26
BCS843 European Air Transport 1 2026-05-28
BCS841 European Air Transport 1 2026-05-21
BCS7CW - 1 2026-05-04
BCS7856 European Air Transport 1 2026-05-04
BCS49N European Air Transport 1 2026-05-15
BCS47H European Air Transport 1 2026-04-26
BCS3845 European Air Transport 1 2026-05-11
BCS3844 European Air Transport 1 2026-05-11
BCS2213 European Air Transport 1 2026-05-16
BCS19U European Air Transport 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BCS9117 ZAG → CGN May 29, 18:35 UTCMay 29, 19:40 UTC1h 5m
2026-05-29 BCS9114 MXP → ZAG May 29, 06:15 UTCMay 29, 07:00 UTC45m
2026-05-29 BCS7332 CDG → CDG May 29, 01:45 UTCMay 29, 02:45 UTC1h 0m
2026-05-28 BCS843 EMA → CGN May 28, 23:20 UTCMay 29, 00:30 UTC1h 10m
2026-05-28 BCS9117 ZAG → CGN May 28, 18:35 UTCMay 28, 20:20 UTC1h 45m
2026-05-28 BCS9114 MXP → ZAG May 28, 06:30 UTCMay 28, 07:15 UTC45m
2026-05-28 BCS7332 CDG → CDG May 28, 02:00 UTCMay 28, 02:55 UTC55m
2026-05-27 BCS7331 MXP → CDG May 27, 23:15 UTCMay 28, 00:20 UTC1h 5m
2026-05-27 BCS9117 ZAG → CGN May 27, 19:40 UTCMay 27, 20:40 UTC1h 0m
2026-05-27 BCS9114 MXP → ZAG May 27, 06:15 UTCMay 27, 07:00 UTC46m
2026-05-27 BCS7332 CDG → CDG May 27, 01:14 UTCMay 27, 02:19 UTC1h 5m
2026-05-26 BCS7331 MXP → CDG May 26, 22:54 UTCMay 27, 00:00 UTC1h 5m
2026-05-26 BCS9117 ZAG → CGN May 26, 18:24 UTCMay 26, 19:25 UTC1h 0m
2026-05-26 BCS9114 MXP → ZAG May 26, 06:04 UTCMay 26, 06:49 UTC45m
2026-05-26 BCS138 LEJ → MXP May 26, 02:15 UTCMay 26, 03:30 UTC1h 15m
2026-05-22 BCS9117 ZAG → CGN May 22, 18:25 UTCMay 22, 19:35 UTC1h 10m
2026-05-22 BCS9114 MXP → ZAG May 22, 06:15 UTCMay 22, 07:05 UTC50m
2026-05-22 BCS7332 CDG → CDG May 22, 01:15 UTCMay 22, 02:10 UTC55m
2026-05-21 BCS7331 MXP → CDG May 21, 22:35 UTCMay 21, 23:40 UTC1h 5m
2026-05-21 BCS9117 ZAG → CGN May 21, 18:45 UTCMay 21, 19:40 UTC55m
2026-05-21 BCS9114 MXP → ZAG May 21, 06:15 UTCMay 21, 07:00 UTC45m
2026-05-21 BCS841 LEJ → MAD May 21, 03:45 UTCMay 21, 04:45 UTC1h 0m
2026-05-20 BCS55K BCN → LEJ May 20, 19:55 UTCMay 20, 22:00 UTC2h 5m
2026-05-20 BCS3LR LEJ → LEJ May 20, 02:00 UTCMay 20, 03:55 UTC1h 55m
2026-05-19 BCS55K BCN → LEJ May 19, 20:00 UTCMay 19, 22:00 UTC2h 0m
2026-05-19 BCS3LR LEJ → LEJ May 19, 02:10 UTCMay 19, 04:00 UTC1h 50m
2026-05-18 BCS55K BCN → LEJ May 18, 20:00 UTCMay 18, 22:05 UTC2h 5m
2026-05-18 BCS3LR LEJ → LEJ May 18, 00:25 UTCMay 18, 02:25 UTC2h 0m
2026-05-16 BCS2213 LTN → EMA May 16, 03:45 UTCMay 16, 05:05 UTC1h 20m
2026-05-16 BCS19U LEJ → LTN May 16, 00:55 UTCMay 16, 02:25 UTC1h 30m
2026-05-15 BCS49N BCN → MXP May 15, 20:30 UTCMay 15, 21:35 UTC1h 5m
2026-05-15 BCS3LR LEJ → LEJ May 15, 01:55 UTCMay 15, 03:55 UTC2h 0m
2026-05-14 BCS55K BCN → LEJ May 14, 19:55 UTCMay 14, 21:45 UTC1h 50m
2026-05-14 BCS3LR LEJ → LEJ May 14, 02:00 UTCMay 14, 04:00 UTC2h 0m
2026-05-13 BCS55K BCN → LEJ May 13, 20:05 UTCMay 13, 22:00 UTC1h 55m
2026-05-13 BCS3LR LEJ → LEJ May 13, 02:00 UTCMay 13, 04:00 UTC2h 0m
2026-05-12 BCS55K BCN → LEJ May 12, 20:01 UTCMay 12, 22:10 UTC2h 10m
2026-05-12 BCS3LR LEJ → LEJ May 12, 02:45 UTCMay 12, 04:05 UTC1h 20m
2026-05-11 BCS3845 BLL → LEJ May 11, 20:15 UTCMay 11, 21:25 UTC1h 10m
2026-05-11 BCS3844 LEJ → BLL May 11, 01:15 UTCMay 11, 02:05 UTC50m
2026-05-08 BCS9117 ZAG → CGN May 8, 18:40 UTCMay 8, 19:45 UTC1h 5m
2026-05-08 BCS9114 MXP → ZAG May 8, 06:04 UTCMay 8, 07:04 UTC1h 0m
2026-05-08 BCS7332 CDG → CDG May 8, 01:09 UTCMay 8, 02:09 UTC1h 0m
2026-05-07 BCS7331 MXP → CDG May 7, 22:30 UTCMay 7, 23:34 UTC1h 5m
2026-05-07 BCS9117 ZAG → CGN May 7, 19:15 UTCMay 7, 20:15 UTC1h 0m
2026-05-07 BCS9114 MXP → ZAG May 7, 06:30 UTCMay 7, 07:15 UTC45m
2026-05-07 BCS7332 CDG → CDG May 7, 01:00 UTCMay 7, 02:00 UTC1h 0m
2026-05-06 BCS7331 MXP → CDG May 6, 22:30 UTCMay 6, 23:30 UTC1h 0m
2026-05-06 BCS9117 ZAG → CGN May 6, 18:35 UTCMay 6, 19:40 UTC1h 5m
2026-05-06 BCS9114 MXP → ZAG May 6, 06:15 UTCMay 6, 07:05 UTC50m

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

Mode-S 3C70B5 frequently asked

What is Mode-S code 3C70B5?
3C70B5 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALEU.
Where is Mode-S 3C70B5 registered?
Mode-S code 3C70B5 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C70B5 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C70B5, octal 17070265, decimal 3,961,013.
What flights does 3C70B5 operate?
Mode-S 3C70B5 has broadcast 19 distinct callsigns, including BCS55K, BCS3LR, BCS9117, BCS9114, BCS7332.