Apparatus

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sensors Mode-S transponder

3C70B4

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ALET · BOEING 757-200

Hex
3C70B4
Octal
17070264
Decimal
3,961,012
Country
DE
Tail
D-ALET
Type
B752
No current signal · last broadcast 13h ago
Flights observed
94
Distinct callsigns
20
Country
DE
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 3C70B4.

Country allocation

The ICAO 24-bit address 3C70B4 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
BCS4GC European Air Transport 11 2026-04-30
BCS1MU European Air Transport 10 2026-05-01
BCS3LR European Air Transport 9 2026-05-11
BCS55K European Air Transport 7 2026-05-11
BCS9114 European Air Transport 6 2026-05-20
BCS9117 European Air Transport 5 2026-05-19
BCS4127 European Air Transport 5 2026-05-29
BCS4126 European Air Transport 5 2026-05-29
BCS19U European Air Transport 5 2026-05-09
BCS7332 European Air Transport 4 2026-05-20
BCS7331 European Air Transport 4 2026-05-19
BCS49N European Air Transport 4 2026-05-08
BCS2213 European Air Transport 3 2026-05-09
BCS3845 European Air Transport 2 2026-06-01
BCS3844 European Air Transport 2 2026-06-01
BCS138 European Air Transport 2 2026-05-19
BCS842 European Air Transport 1 2026-05-21
BCS7CW - 1 2026-05-05
BCS7510 European Air Transport 1 2026-06-02
BCS709P - 1 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 BCS709P - Jun 2, 05:25 UTCJun 2, 06:35 UTC1h 10m
2026-06-02 BCS7510 LEJ → VBS Jun 2, 02:40 UTCJun 2, 03:45 UTC1h 5m
2026-06-01 BCS3845 BLL → LEJ Jun 1, 20:20 UTCJun 1, 21:10 UTC50m
2026-06-01 BCS3844 LEJ → BLL Jun 1, 01:10 UTCJun 1, 02:00 UTC50m
2026-05-29 BCS4127 LNZ → LEJ May 29, 19:40 UTCMay 29, 20:20 UTC40m
2026-05-29 BCS4126 LEJ → LNZ May 29, 03:50 UTCMay 29, 04:30 UTC40m
2026-05-28 BCS4127 LNZ → LEJ May 28, 20:00 UTCMay 28, 20:40 UTC40m
2026-05-28 BCS4126 LEJ → LNZ May 28, 03:55 UTCMay 28, 04:30 UTC35m
2026-05-27 BCS4127 LNZ → LEJ May 27, 19:50 UTCMay 27, 20:35 UTC45m
2026-05-27 BCS4126 LEJ → LNZ May 27, 03:34 UTCMay 27, 04:14 UTC40m
2026-05-26 BCS4127 LNZ → LEJ May 26, 19:45 UTCMay 26, 20:29 UTC45m
2026-05-26 BCS4126 LEJ → LNZ May 26, 03:25 UTCMay 26, 04:04 UTC40m
2026-05-22 BCS4127 LNZ → LEJ May 22, 19:35 UTCMay 22, 20:25 UTC50m
2026-05-22 BCS4126 LEJ → LNZ May 22, 03:30 UTCMay 22, 04:15 UTC45m
2026-05-21 BCS842 MAD → LEJ May 21, 19:40 UTCMay 21, 20:45 UTC1h 5m
2026-05-20 BCS9114 MXP → ZAG May 20, 06:05 UTCMay 20, 06:50 UTC45m
2026-05-20 BCS7332 CDG → CDG May 20, 01:20 UTCMay 20, 02:15 UTC55m
2026-05-19 BCS7331 MXP → CDG May 19, 22:50 UTCMay 19, 23:55 UTC1h 5m
2026-05-19 BCS9117 ZAG → CGN May 19, 18:40 UTCMay 19, 19:40 UTC1h 0m
2026-05-19 BCS9114 MXP → ZAG May 19, 06:10 UTCMay 19, 06:50 UTC40m
2026-05-19 BCS138 LEJ → MXP May 19, 02:20 UTCMay 19, 03:40 UTC1h 20m
2026-05-18 BCS3845 BLL → LEJ May 18, 20:20 UTCMay 18, 21:20 UTC1h 0m
2026-05-18 BCS3844 LEJ → BLL May 18, 00:45 UTCMay 18, 01:35 UTC50m
2026-05-15 BCS5709 MXP → LEJ May 15, 21:20 UTCMay 15, 23:10 UTC1h 50m
2026-05-15 BCS9117 ZAG → CGN May 15, 18:35 UTCMay 15, 19:40 UTC1h 5m
2026-05-15 BCS9114 MXP → ZAG May 15, 06:20 UTCMay 15, 07:10 UTC50m
2026-05-15 BCS7332 CDG → CDG May 15, 01:15 UTCMay 15, 02:10 UTC55m
2026-05-14 BCS7331 MXP → CDG May 14, 22:45 UTCMay 14, 23:45 UTC1h 0m
2026-05-14 BCS9117 ZAG → CGN May 14, 18:30 UTCMay 14, 19:45 UTC1h 15m
2026-05-14 BCS9114 MXP → ZAG May 14, 06:20 UTCMay 14, 07:15 UTC55m
2026-05-14 BCS7332 CDG → CDG May 14, 01:10 UTCMay 14, 02:05 UTC55m
2026-05-13 BCS7331 MXP → CDG May 13, 22:55 UTCMay 13, 23:55 UTC1h 0m
2026-05-13 BCS9117 ZAG → CGN May 13, 18:35 UTCMay 13, 19:30 UTC55m
2026-05-13 BCS9114 MXP → ZAG May 13, 06:05 UTCMay 13, 07:05 UTC1h 0m
2026-05-13 BCS7332 CDG → CDG May 13, 01:20 UTCMay 13, 02:20 UTC1h 0m
2026-05-12 BCS7331 MXP → CDG May 12, 22:50 UTCMay 12, 23:50 UTC1h 0m
2026-05-12 BCS9117 ZAG → CGN May 12, 18:35 UTCMay 12, 19:35 UTC1h 0m
2026-05-12 BCS9114 MXP → ZAG May 12, 06:10 UTCMay 12, 07:00 UTC50m
2026-05-12 BCS138 LEJ → MXP May 12, 02:45 UTCMay 12, 03:40 UTC55m
2026-05-11 BCS55K BCN → LEJ May 11, 20:00 UTCMay 11, 21:45 UTC1h 45m
2026-05-11 BCS3LR LEJ → LEJ May 11, 00:30 UTCMay 11, 02:40 UTC2h 10m
2026-05-09 BCS2213 LTN → EMA May 9, 03:40 UTCMay 9, 04:55 UTC1h 15m
2026-05-09 BCS19U LEJ → LTN May 9, 02:15 UTCMay 9, 02:25 UTC10m
2026-05-09 BCS19U LEJ → LTN May 9, 00:55 UTCMay 9, 02:10 UTC1h 15m
2026-05-08 BCS49N BCN → MXP May 8, 20:30 UTCMay 8, 21:45 UTC1h 15m
2026-05-08 BCS3LR LEJ → LEJ May 8, 02:19 UTCMay 8, 04:25 UTC2h 5m
2026-05-07 BCS55K BCN → LEJ May 7, 20:05 UTCMay 7, 21:55 UTC1h 50m
2026-05-07 BCS3LR LEJ → LEJ May 7, 02:10 UTCMay 7, 04:15 UTC2h 5m
2026-05-06 BCS55K BCN → LEJ May 6, 20:10 UTCMay 6, 22:00 UTC1h 50m
2026-05-06 BCS3LR LEJ → LEJ May 6, 02:50 UTCMay 6, 05:00 UTC2h 10m

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

Mode-S 3C70B4 frequently asked

What is Mode-S code 3C70B4?
3C70B4 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALET.
Where is Mode-S 3C70B4 registered?
Mode-S code 3C70B4 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C70B4 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 3C70B4, octal 17070264, decimal 3,961,012.
What flights does 3C70B4 operate?
Mode-S 3C70B4 has broadcast 20 distinct callsigns, including BCS4GC, BCS1MU, BCS3LR, BCS55K, BCS9114.