Apparatus

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sensors Mode-S transponder

3C71A1

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ALMA · AIRBUS A-330-200

Hex
3C71A1
Octal
17070641
Decimal
3,961,249
Country
DE
Tail
D-ALMA
Type
A332
No current signal · last broadcast 28d ago
Flights observed
51
Distinct callsigns
17
Country
DE
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S 3C71A1.

Country allocation

The ICAO 24-bit address 3C71A1 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 17 distinct

Callsign Airline Flights Last seen
BCS082 European Air Transport 10 2026-04-17
BCS081 European Air Transport 7 2026-04-28
BCS548 European Air Transport 6 2026-04-18
BCS120 European Air Transport 5 2026-04-28
BCS62A European Air Transport 4 2026-04-16
BCS644 - 3 2026-04-26
BCS7 European Air Transport 2 2026-05-01
BCS6TP European Air Transport 2 2026-04-28
BCS679 - 2 2026-04-30
BCS675 - 2 2026-04-26
BCS642 - 2 2026-04-29
BCS995 European Air Transport 1 2026-04-27
BCS962 European Air Transport 1 2026-04-27
BCS92P - 1 2026-04-15
BCS651 - 1 2026-04-19
BCS55G European Air Transport 1 2026-04-19
BCS3QL European Air Transport 1 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-01 BCS7 TLV → LEJ May 1, 21:45 UTCMay 2, 01:20 UTC3h 35m
2026-04-30 BCS7 TLV → LEJ Apr 30, 20:55 UTCMay 1, 05:50 UTC8h 55m
2026-04-30 BCS679 - Apr 30, 14:30 UTCApr 30, 18:40 UTC4h 10m
2026-04-30 BCS679 - Apr 30, 03:25 UTCApr 30, 03:45 UTC20m
2026-04-29 BCS642 - Apr 29, 22:45 UTCApr 29, 23:20 UTC34m
2026-04-29 BCS642 - Apr 29, 04:29 UTCApr 29, 20:45 UTC16h 16m
2026-04-28 BCS6TP BRU → LEJ Apr 28, 23:20 UTCApr 29, 00:15 UTC55m
2026-04-28 BCS081 BRU → LOS Apr 28, 05:05 UTCApr 28, 20:10 UTC15h 5m
2026-04-28 BCS120 LEJ → BRU Apr 28, 02:00 UTCApr 28, 03:00 UTC1h 0m
2026-04-27 BCS995 LEJ → LTN Apr 27, 16:15 UTCApr 27, 20:00 UTC3h 45m
2026-04-27 BCS962 LEJ → TLV Apr 27, 10:15 UTCApr 27, 13:45 UTC3h 30m
2026-04-26 BCS675 HKG → LEJ Apr 26, 02:55 UTCApr 26, 17:25 UTC14h 30m
2026-04-26 BCS644 - Apr 26, 00:25 UTCApr 26, 00:45 UTC20m
2026-04-25 BCS644 - Apr 25, 08:15 UTCApr 25, 22:35 UTC14h 20m
2026-04-22 BCS675 HKG → LEJ Apr 22, 01:45 UTCApr 22, 17:00 UTC15h 15m
2026-04-21 BCS644 LEJ → HKG Apr 21, 04:35 UTCApr 21, 22:25 UTC17h 50m
2026-04-20 BCS6TP BRU → LEJ Apr 20, 23:25 UTCApr 21, 00:20 UTC55m
2026-04-19 BCS55G LEJ → LEJ Apr 19, 21:25 UTCApr 19, 22:20 UTC55m
2026-04-19 BCS651 HKG → LEJ Apr 19, 01:10 UTCApr 19, 16:00 UTC14h 50m
2026-04-18 BCS548 LEJ → DEL Apr 18, 18:50 UTCApr 18, 19:20 UTC30m
2026-04-18 BCS548 LEJ → DEL Apr 18, 14:50 UTCApr 18, 16:55 UTC2h 5m
2026-04-18 BCS548 LEJ → DEL Apr 18, 07:25 UTCApr 18, 07:50 UTC25m
2026-04-18 BCS548 LEJ → DEL Apr 18, 05:25 UTCApr 18, 07:20 UTC1h 55m
2026-04-18 BCS548 LEJ → DEL Apr 18, 04:45 UTCApr 18, 06:10 UTC1h 25m
2026-04-18 BCS548 LEJ → DEL Apr 18, 04:05 UTCApr 18, 11:45 UTC7h 40m
2026-04-17 BCS3QL BRU → LEJ Apr 17, 22:05 UTCApr 17, 23:00 UTC55m
2026-04-17 BCS082 LOS → LOS Apr 17, 19:25 UTCApr 17, 20:00 UTC35m
2026-04-17 BCS082 LOS → LOS Apr 17, 17:45 UTCApr 17, 19:20 UTC1h 35m
2026-04-17 BCS081 BRU → LOS Apr 17, 05:20 UTCApr 17, 06:50 UTC1h 30m
2026-04-17 BCS081 BRU → LOS Apr 17, 04:50 UTCApr 17, 05:15 UTC25m
2026-04-17 BCS120 LEJ → BRU Apr 17, 01:50 UTCApr 17, 02:45 UTC55m
2026-04-16 BCS62A BRU → LEJ Apr 16, 22:20 UTCApr 16, 23:10 UTC50m
2026-04-16 BCS082 LOS → LOS Apr 16, 19:15 UTCApr 16, 20:10 UTC55m
2026-04-16 BCS082 LOS → LOS Apr 16, 18:10 UTCApr 16, 19:10 UTC1h 0m
2026-04-16 BCS081 BRU → LOS Apr 16, 05:09 UTCApr 16, 07:05 UTC1h 55m
2026-04-16 BCS120 LEJ → BRU Apr 16, 01:50 UTCApr 16, 02:50 UTC1h 0m
2026-04-15 BCS92P - Apr 15, 23:10 UTCApr 15, 23:55 UTC45m
2026-04-15 BCS082 LOS → LOS Apr 15, 19:05 UTCApr 15, 20:55 UTC1h 50m
2026-04-15 BCS082 LOS → LOS Apr 15, 18:50 UTCApr 15, 19:00 UTC10m
2026-04-15 BCS081 BRU → LOS Apr 15, 05:05 UTCApr 15, 06:50 UTC1h 45m
2026-04-15 BCS120 LEJ → BRU Apr 15, 02:00 UTCApr 15, 02:50 UTC50m
2026-04-14 BCS62A BRU → LEJ Apr 14, 22:55 UTCApr 14, 23:20 UTC25m
2026-04-14 BCS62A BRU → LEJ Apr 14, 22:20 UTCApr 14, 22:50 UTC30m
2026-04-14 BCS082 LOS → LOS Apr 14, 18:55 UTCApr 14, 20:15 UTC1h 20m
2026-04-14 BCS082 LOS → LOS Apr 14, 18:10 UTCApr 14, 18:45 UTC35m
2026-04-14 BCS081 - Apr 14, 07:10 UTCApr 14, 07:20 UTC10m
2026-04-14 BCS081 - Apr 14, 05:15 UTCApr 14, 07:10 UTC1h 55m
2026-04-13 BCS62A BRU → LEJ Apr 13, 22:10 UTCApr 13, 23:05 UTC55m
2026-04-13 BCS082 LOS → LOS Apr 13, 19:50 UTCApr 13, 20:00 UTC10m
2026-04-13 BCS082 LOS → LOS Apr 13, 18:05 UTCApr 13, 20:00 UTC1h 55m

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

Mode-S 3C71A1 frequently asked

What is Mode-S code 3C71A1?
3C71A1 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALMA.
Where is Mode-S 3C71A1 registered?
Mode-S code 3C71A1 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C71A1 broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C71A1, octal 17070641, decimal 3,961,249.
What flights does 3C71A1 operate?
Mode-S 3C71A1 has broadcast 17 distinct callsigns, including BCS082, BCS081, BCS548, BCS120, BCS62A.