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 Jul 25, 05:15 UTC
Flights observed
196
Distinct callsigns
20
Country
DE
Last broadcast
Jul 25, 05:15 UTC

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 20 distinct

Callsign Airline Flights Last seen
BCS9117 - 22 2026-07-03
BCS9114 - 22 2026-07-03
BCS55K European Air Transport 21 2026-06-01
BCS3LR European Air Transport 20 2026-06-01
BCS7332 - 16 2026-07-03
BCS7331 - 15 2026-07-02
BCS4GC European Air Transport 11 2026-07-23
BCS1MU European Air Transport 11 2026-07-24
BCS3845 - 6 2026-07-13
BCS3844 - 6 2026-07-13
BCS138 - 6 2026-06-30
BCS9LE - 5 2026-07-15
BCS71C - 5 2026-07-15
BCS1956 - 5 2026-07-15
BCS49N European Air Transport 3 2026-07-24
BCS47H European Air Transport 3 2026-07-19
BCS4127 European Air Transport 3 2026-06-05
BCS4126 European Air Transport 3 2026-06-05
BCS2213 European Air Transport 3 2026-07-25
BCS19U European Air Transport 3 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 BCS2213 LTN → EMA Jul 25, 03:45 UTCJul 25, 05:10 UTC1h 25m
2026-07-25 BCS19U LEJ → LTN Jul 25, 01:05 UTCJul 25, 02:30 UTC1h 25m
2026-07-24 BCS49N BCN → MXP Jul 24, 20:35 UTCJul 24, 21:50 UTC1h 15m
2026-07-24 BCS1MU BRU → BRU Jul 24, 01:55 UTCJul 24, 03:30 UTC1h 35m
2026-07-23 BCS4GC BCN → BCN Jul 23, 20:35 UTCJul 23, 22:20 UTC1h 45m
2026-07-23 BCS1MU BRU → BRU Jul 23, 01:50 UTCJul 23, 03:20 UTC1h 30m
2026-07-22 BCS4GC BCN → BCN Jul 22, 20:25 UTCJul 22, 22:05 UTC1h 40m
2026-07-22 BCS1MU BRU → BRU Jul 22, 01:50 UTCJul 22, 03:25 UTC1h 35m
2026-07-21 BCS4GC BCN → BCN Jul 21, 20:25 UTCJul 21, 22:15 UTC1h 50m
2026-07-21 BCS1MU BRU → BRU Jul 21, 01:55 UTCJul 21, 03:30 UTC1h 35m
2026-07-20 BCS4GC BCN → BCN Jul 20, 20:25 UTCJul 20, 22:10 UTC1h 45m
2026-07-19 BCS47H LEJ → LEJ Jul 19, 23:15 UTCJul 20, 01:15 UTC2h 0m
2026-07-15 BCS9LE - Jul 15, 21:00 UTCJul 15, 22:25 UTC1h 25m
2026-07-15 BCS1956 BRU → MRS Jul 15, 02:25 UTCJul 15, 03:50 UTC1h 25m
2026-07-15 BCS71C LEJ → BRU Jul 15, 00:00 UTCJul 15, 01:05 UTC1h 5m
2026-07-13 BCS3845 BLL → LEJ Jul 13, 20:15 UTCJul 13, 21:10 UTC55m
2026-07-13 BCS3844 LEJ → BLL Jul 13, 00:35 UTCJul 13, 01:30 UTC55m
2026-07-10 BCS9LE - Jul 10, 20:30 UTCJul 10, 22:05 UTC1h 36m
2026-07-10 BCS1956 - Jul 10, 02:30 UTCJul 10, 03:45 UTC1h 15m
2026-07-09 BCS71C LEJ → BRU Jul 9, 23:40 UTCJul 10, 00:35 UTC55m
2026-07-09 BCS9LE - Jul 9, 20:25 UTCJul 9, 22:05 UTC1h 40m
2026-07-09 BCS1956 - Jul 9, 02:25 UTCJul 9, 03:35 UTC1h 10m
2026-07-08 BCS71C LEJ → BRU Jul 8, 23:35 UTCJul 9, 00:30 UTC55m
2026-07-08 BCS9LE - Jul 8, 20:40 UTCJul 8, 22:15 UTC1h 35m
2026-07-08 BCS1956 - Jul 8, 02:30 UTCJul 8, 03:45 UTC1h 15m
2026-07-08 BCS71C LEJ → BRU Jul 8, 00:00 UTCJul 8, 00:55 UTC55m
2026-07-07 BCS9LE MRS → LEJ Jul 7, 20:50 UTCJul 7, 22:30 UTC1h 40m
2026-07-07 BCS1956 - Jul 7, 02:30 UTCJul 7, 03:45 UTC1h 15m
2026-07-06 BCS71C LEJ → BRU Jul 6, 23:45 UTCJul 7, 00:40 UTC55m
2026-07-06 BCS3845 - Jul 6, 20:25 UTCJul 6, 21:15 UTC50m
2026-07-06 BCS3844 LEJ → BLL Jul 6, 00:40 UTCJul 6, 01:35 UTC55m
2026-07-03 BCS9117 - Jul 3, 18:30 UTCJul 3, 19:50 UTC1h 20m
2026-07-03 BCS9114 - Jul 3, 06:00 UTCJul 3, 06:50 UTC50m
2026-07-03 BCS7332 CDG → MXP Jul 3, 01:00 UTCJul 3, 02:00 UTC1h 0m
2026-07-02 BCS7331 MXP → CDG Jul 2, 22:40 UTCJul 2, 23:40 UTC1h 0m
2026-07-02 BCS9117 - Jul 2, 18:30 UTCJul 2, 19:25 UTC55m
2026-07-02 BCS9114 - Jul 2, 06:00 UTCJul 2, 06:51 UTC51m
2026-07-02 BCS7332 CDG → MXP Jul 2, 01:10 UTCJul 2, 02:15 UTC1h 5m
2026-07-01 BCS7331 - Jul 1, 22:45 UTCJul 1, 23:50 UTC1h 5m
2026-07-01 BCS9117 - Jul 1, 19:25 UTCJul 1, 20:35 UTC1h 10m
2026-07-01 BCS9114 - Jul 1, 06:05 UTCJul 1, 07:00 UTC55m
2026-07-01 BCS7332 CDG → MXP Jul 1, 01:15 UTCJul 1, 02:15 UTC1h 0m
2026-06-30 BCS7331 MXP → CDG Jun 30, 22:35 UTCJun 30, 23:35 UTC1h 0m
2026-06-30 BCS9117 - Jun 30, 18:35 UTCJun 30, 19:35 UTC1h 0m
2026-06-30 BCS9114 - Jun 30, 06:00 UTCJun 30, 06:45 UTC45m
2026-06-30 BCS138 LEJ → MXP Jun 30, 02:25 UTCJun 30, 03:35 UTC1h 10m
2026-06-29 BCS3845 - Jun 29, 20:24 UTCJun 29, 21:24 UTC1h 0m
2026-06-29 BCS3844 - Jun 29, 01:05 UTCJun 29, 01:50 UTC45m
2026-06-27 BCS2213 - Jun 27, 03:40 UTCJun 27, 04:59 UTC1h 20m
2026-06-27 BCS19U MXP → LTN Jun 27, 01:00 UTCJun 27, 02:25 UTC1h 25m

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 Jul 25, 05:15 UTC.
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 20 distinct callsigns, including BCS9117, BCS9114, BCS55K, BCS3LR, BCS7332.