Apparatus

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sensors Mode-S transponder

3C71A4

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C71A4
Octal
17070644
Decimal
3,961,252
Country
DE
Tail
D-ALMD
Type
A332
No current signal · last broadcast 7h ago
Flights observed
149
Distinct callsigns
20
Country
DE
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 3C71A4.

Country allocation

The ICAO 24-bit address 3C71A4 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
BCS120 European Air Transport 25 2026-06-02
BCS082 European Air Transport 21 2026-06-01
BCS62A European Air Transport 18 2026-06-01
BCS081 European Air Transport 15 2026-06-02
BCS642 - 6 2026-04-15
BCS080 European Air Transport 5 2026-05-23
BCS831 European Air Transport 4 2026-04-17
BCS830 European Air Transport 4 2026-04-17
BCS6TP European Air Transport 4 2026-05-28
BCS679 - 4 2026-04-16
BCS673 - 4 2026-05-30
BCS548 European Air Transport 3 2026-05-16
BCS3QL European Air Transport 3 2026-05-08
BCS991 European Air Transport 2 2026-05-27
BCS8AA European Air Transport 2 2026-04-17
BCS74W European Air Transport 2 2026-05-29
BCS675 - 2 2026-05-17
BCS651 - 2 2026-05-31
BCS378 European Air Transport 2 2026-05-28
BCS357A - 2 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 BCS081 BRU → LOS Jun 2, 09:40 UTCJun 2, 11:55 UTC2h 15m
2026-06-02 BCS120 LEJ → BRU Jun 2, 04:45 UTCJun 2, 06:05 UTC1h 20m
2026-06-01 BCS62A BRU → LEJ Jun 1, 22:15 UTCJun 1, 23:10 UTC55m
2026-06-01 BCS082 LOS → LOS Jun 1, 18:40 UTCJun 1, 20:40 UTC2h 0m
2026-05-31 BCS082 LOS → LOS May 31, 23:05 UTCJun 1, 20:40 UTC21h 35m
2026-05-31 BCS081 BRU → LOS May 31, 21:30 UTCJun 1, 20:40 UTC23h 10m
2026-05-31 BCS120 LEJ → BRU May 31, 18:40 UTCMay 31, 19:35 UTC55m
2026-05-31 BCS651 - May 31, 10:25 UTCMay 31, 14:35 UTC4h 10m
2026-05-30 BCS651 - May 30, 23:25 UTCMay 30, 23:45 UTC20m
2026-05-30 BCS673 - May 30, 19:35 UTCMay 30, 20:00 UTC25m
2026-05-30 BCS673 - May 30, 11:35 UTCMay 30, 17:30 UTC5h 55m
2026-05-30 BCS673 - May 30, 09:25 UTCMay 30, 09:50 UTC25m
2026-05-30 BCS673 - May 30, 04:10 UTCMay 30, 07:40 UTC3h 30m
2026-05-29 BCS74W TLV → LEJ May 29, 10:35 UTCMay 29, 14:30 UTC3h 55m
2026-05-29 BCS1RM LEJ → TLV May 29, 04:40 UTCMay 29, 08:05 UTC3h 25m
2026-05-28 BCS6TP BRU → LEJ May 28, 23:30 UTCMay 29, 00:30 UTC1h 0m
2026-05-28 BCS378 MXP → CVG May 28, 11:55 UTCMay 28, 19:40 UTC7h 45m
2026-05-27 BCS354 MXP → CVG May 27, 18:45 UTCMay 28, 03:35 UTC8h 50m
2026-05-27 BCS991 TLV → MXP May 27, 15:00 UTCMay 27, 16:10 UTC1h 10m
2026-05-26 BCS081 BRU → LOS May 26, 04:50 UTCMay 26, 20:05 UTC15h 15m
2026-05-26 BCS120 LEJ → BRU May 26, 02:04 UTCMay 26, 02:55 UTC50m
2026-05-25 BCS6TP BRU → LEJ May 25, 23:19 UTCMay 26, 00:24 UTC1h 5m
2026-05-25 BCS082 LOS → LOS May 25, 19:10 UTCMay 25, 21:19 UTC2h 10m
2026-05-24 BCS082 LOS → LOS May 24, 23:05 UTCMay 25, 21:19 UTC22h 15m
2026-05-24 BCS082 LOS → LOS May 24, 21:25 UTCMay 25, 20:59 UTC23h 35m
2026-05-24 BCS120 LEJ → BRU May 24, 18:15 UTCMay 24, 19:15 UTC1h 0m
2026-05-24 BCS62A BRU → LEJ May 24, 11:50 UTCMay 24, 12:50 UTC1h 0m
2026-05-23 BCS080 ACC → LOS May 23, 07:05 UTCMay 24, 01:05 UTC18h 1m
2026-05-23 BCS080 ACC → LOS May 23, 05:45 UTCMay 24, 01:05 UTC19h 21m
2026-05-23 BCS120 LEJ → BRU May 23, 01:35 UTCMay 23, 02:30 UTC54m
2026-05-22 BCS74W TLV → LEJ May 22, 11:55 UTCMay 22, 15:30 UTC3h 35m
2026-05-22 BCS1RM LEJ → TLV May 22, 04:40 UTCMay 22, 08:10 UTC3h 30m
2026-05-21 BCS6TP BRU → LEJ May 21, 23:25 UTCMay 22, 00:15 UTC50m
2026-05-21 BCS378 MXP → CVG May 21, 11:45 UTCMay 21, 18:55 UTC7h 10m
2026-05-20 BCS354 MXP → CVG May 20, 21:40 UTCMay 21, 07:10 UTC9h 30m
2026-05-20 BCS991 TLV → MXP May 20, 18:45 UTCMay 20, 19:55 UTC1h 10m
2026-05-19 BCS6TP BRU → LEJ May 19, 23:25 UTCMay 20, 00:20 UTC55m
2026-05-19 BCS081 BRU → LOS May 19, 05:05 UTCMay 19, 20:45 UTC15h 40m
2026-05-19 BCS120 LEJ → BRU May 19, 01:50 UTCMay 19, 02:45 UTC55m
2026-05-18 BCS995 LEJ → LTN May 18, 16:10 UTCMay 18, 20:00 UTC3h 49m
2026-05-18 BCS962 LEJ → TLV May 18, 10:05 UTCMay 18, 13:35 UTC3h 30m
2026-05-18 BCS56W EMA → LEJ May 18, 00:35 UTCMay 18, 02:00 UTC1h 25m
2026-05-17 BCS93C LEJ → EMA May 17, 21:15 UTCMay 17, 22:45 UTC1h 30m
2026-05-17 BCS675 - May 17, 10:35 UTCMay 17, 15:05 UTC4h 30m
2026-05-17 BCS675 - May 17, 00:25 UTCMay 17, 00:45 UTC20m
2026-05-16 BCS548 LEJ → DEL May 16, 19:10 UTCMay 16, 19:30 UTC20m
2026-05-16 BCS548 LEJ → DEL May 16, 15:01 UTCMay 16, 17:15 UTC2h 15m
2026-05-16 BCS548 LEJ → DEL May 16, 04:30 UTCMay 16, 12:21 UTC7h 51m
2026-05-13 BCS62A BRU → LEJ May 13, 22:20 UTCMay 13, 23:20 UTC1h 0m
2026-05-13 BCS081 BRU → LOS May 13, 05:05 UTCMay 13, 20:10 UTC15h 5m

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

Mode-S 3C71A4 frequently asked

What is Mode-S code 3C71A4?
3C71A4 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALMD.
Where is Mode-S 3C71A4 registered?
Mode-S code 3C71A4 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C71A4 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C71A4, octal 17070644, decimal 3,961,252.
What flights does 3C71A4 operate?
Mode-S 3C71A4 has broadcast 20 distinct callsigns, including BCS120, BCS082, BCS62A, BCS081, BCS642.