Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
Transponder active on ground
Flights observed
252
Distinct callsigns
20
Country
DE
Last broadcast
2h 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 - 41 2026-07-09
BCS62A - 32 2026-07-12
BCS081 - 28 2026-07-09
BCS082 - 27 2026-06-17
BCS080 - 9 2026-07-11
BCS6TP - 8 2026-07-16
BCS694 - 6 2026-07-01
BCS642 - 6 2026-04-15
BCS3QL - 5 2026-07-03
BCS364 - 5 2026-06-25
BCS361 European Air Transport 5 2026-06-25
BCS1RM - 5 2026-07-17
BCS831 European Air Transport 4 2026-04-17
BCS830 European Air Transport 4 2026-04-17
BCS74W - 4 2026-07-17
BCS679 - 4 2026-04-16
BCS674 - 4 2026-06-30
BCS673 - 4 2026-05-30
BCS378 - 4 2026-07-16
BCS354 - 4 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 BCS230 MXP → BRU Jul 17, 19:15 UTCJul 17, 20:29 UTC1h 15m
2026-07-17 BCS74W TLV → LEJ Jul 17, 11:45 UTCJul 17, 15:25 UTC3h 40m
2026-07-17 BCS1RM LEJ → TLV Jul 17, 05:30 UTCJul 17, 08:49 UTC3h 20m
2026-07-16 BCS6TP - Jul 16, 23:25 UTCJul 17, 00:14 UTC50m
2026-07-16 BCS378 - Jul 16, 11:50 UTCJul 16, 19:40 UTC7h 50m
2026-07-15 BCS354 BRU → CVG Jul 15, 17:35 UTCJul 16, 01:45 UTC8h 10m
2026-07-15 BCS991 TLV → BRU Jul 15, 10:45 UTCJul 15, 15:25 UTC4h 40m
2026-07-15 BCS1RM LEJ → TLV Jul 15, 04:30 UTCJul 15, 07:55 UTC3h 25m
2026-07-14 BCS6TP BRU → LEJ Jul 14, 23:25 UTCJul 15, 00:20 UTC55m
2026-07-13 BCS811 MXP → BRU Jul 13, 23:10 UTCJul 14, 00:15 UTC1h 5m
2026-07-12 BCS6GA BRU → MXP Jul 12, 19:25 UTCJul 12, 20:30 UTC1h 5m
2026-07-12 BCS71C LEJ → BRU Jul 12, 16:10 UTCJul 12, 17:10 UTC1h 0m
2026-07-12 BCS62A BRU → LEJ Jul 12, 11:50 UTCJul 12, 12:50 UTC1h 0m
2026-07-11 BCS080 BRU → BRU Jul 11, 05:50 UTCJul 12, 00:45 UTC18h 55m
2026-07-10 BCS8AA MXP → BRU Jul 10, 22:30 UTCJul 10, 23:40 UTC1h 10m
2026-07-10 BCS230 MXP → BRU Jul 10, 18:35 UTCJul 10, 19:50 UTC1h 15m
2026-07-10 BCS74W TLV → LEJ Jul 10, 10:55 UTCJul 10, 14:45 UTC3h 50m
2026-07-10 BCS1RM LEJ → TLV Jul 10, 04:30 UTCJul 10, 07:55 UTC3h 25m
2026-07-09 BCS6TP - Jul 9, 23:40 UTCJul 10, 00:40 UTC1h 0m
2026-07-09 BCS081 - Jul 9, 04:55 UTCJul 9, 19:40 UTC14h 45m
2026-07-09 BCS120 LEJ → BRU Jul 9, 02:00 UTCJul 9, 02:50 UTC50m
2026-07-08 BCS62A - Jul 8, 22:15 UTCJul 8, 23:10 UTC55m
2026-07-08 BCS081 - Jul 8, 05:05 UTCJul 8, 19:50 UTC14h 45m
2026-07-08 BCS120 LEJ → BRU Jul 8, 01:55 UTCJul 8, 02:50 UTC55m
2026-07-07 BCS62A - Jul 7, 22:25 UTCJul 7, 23:20 UTC55m
2026-07-07 BCS081 - Jul 7, 05:10 UTCJul 7, 19:50 UTC14h 40m
2026-07-07 BCS120 LEJ → BRU Jul 7, 01:45 UTCJul 7, 02:40 UTC55m
2026-07-05 BCS873 EMA → LEJ Jul 5, 20:30 UTCJul 5, 21:55 UTC1h 25m
2026-07-05 BCS872 BRU → MXP Jul 5, 17:20 UTCJul 5, 18:55 UTC1h 35m
2026-07-05 BCS62A - Jul 5, 11:55 UTCJul 5, 12:45 UTC50m
2026-07-04 BCS080 - Jul 4, 05:50 UTCJul 5, 00:55 UTC19h 5m
2026-07-04 BCS120 LEJ → BRU Jul 4, 01:30 UTCJul 4, 02:25 UTC55m
2026-07-03 BCS3QL - Jul 3, 22:10 UTCJul 3, 23:05 UTC55m
2026-07-03 BCS081 - Jul 3, 05:05 UTCJul 3, 19:30 UTC14h 25m
2026-07-03 BCS120 LEJ → BRU Jul 3, 01:55 UTCJul 3, 02:50 UTC55m
2026-07-01 BCS671 - Jul 1, 18:20 UTCJul 2, 02:45 UTC8h 25m
2026-07-01 BCS694 - Jul 1, 14:15 UTCJul 1, 14:30 UTC15m
2026-07-01 BCS694 - Jul 1, 05:40 UTCJul 1, 12:45 UTC7h 5m
2026-06-30 BCS674 - Jun 30, 16:15 UTCJun 30, 20:05 UTC3h 50m
2026-06-30 BCS674 - Jun 30, 14:30 UTCJun 30, 14:40 UTC10m
2026-06-30 BCS674 - Jun 30, 06:00 UTCJun 30, 13:00 UTC7h 0m
2026-06-30 BCS674 - Jun 30, 05:00 UTCJun 30, 05:15 UTC15m
2026-06-29 BCS694 - Jun 29, 22:19 UTCJun 29, 22:39 UTC20m
2026-06-29 BCS694 - Jun 29, 17:14 UTCJun 29, 21:34 UTC4h 20m
2026-06-29 BCS694 - Jun 29, 15:00 UTCJun 29, 15:14 UTC15m
2026-06-29 BCS694 - Jun 29, 06:24 UTCJun 29, 10:15 UTC3h 50m
2026-06-28 BCS62A - Jun 28, 11:50 UTCJun 28, 12:44 UTC55m
2026-06-27 BCS080 - Jun 27, 05:49 UTCJun 28, 00:55 UTC19h 5m
2026-06-27 BCS120 LEJ → BRU Jun 27, 02:20 UTCJun 27, 03:15 UTC55m
2026-06-26 BCS62A - Jun 26, 22:55 UTCJun 26, 23:49 UTC55m

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?
Mode-S 3C71A4 is currently broadcasting from the ground.
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, BCS62A, BCS081, BCS082, BCS080.