Apparatus

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sensors Mode-S transponder

3C70AA

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C70AA
Octal
17070252
Decimal
3,961,002
Country
DE
Tail
D-ALEJ
Type
A332
Transponder active on ground
Flights observed
275
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 3C70AA.

Country allocation

The ICAO 24-bit address 3C70AA 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 33 2026-07-26
BCS62A - 23 2026-07-16
BCS081 European Air Transport 23 2026-07-26
BCS082 - 18 2026-07-13
BCS644 - 14 2026-07-18
BCS694 - 11 2026-07-08
BCS361 European Air Transport 11 2026-06-19
BCS675 - 10 2026-05-10
BCS651 - 10 2026-07-05
BCS364 - 10 2026-06-19
BCS548 - 9 2026-07-11
BCS673 - 7 2026-06-05
BCS6TP European Air Transport 6 2026-07-22
BCS671 European Air Transport 6 2026-07-23
BCS655 - 6 2026-07-19
BCS378 European Air Transport 6 2026-07-22
BCS991 European Air Transport 5 2026-07-21
BCS3QL European Air Transport 5 2026-07-17
BCS653 - 4 2026-07-09
BCS357 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BCS081 BRU → LOS Jul 26, 21:30 UTCJul 26, 22:30 UTC1h 0m
2026-07-26 BCS120 LEJ → BRU Jul 26, 18:20 UTCJul 26, 19:15 UTC55m
2026-07-26 BCS67Z JFK → LEJ Jul 26, 06:00 UTCJul 26, 13:00 UTC7h 1m
2026-07-25 BCS360 LEJ → JFK Jul 25, 18:35 UTCJul 26, 02:35 UTC8h 0m
2026-07-25 BCS5TM LEJ → FRA Jul 25, 15:25 UTCJul 25, 16:05 UTC40m
2026-07-24 BCS8AA MXP → BRU Jul 24, 22:50 UTCJul 24, 23:55 UTC1h 5m
2026-07-24 BCS230 MXP → BRU Jul 24, 18:35 UTCJul 24, 19:50 UTC1h 15m
2026-07-24 BCS74W TLV → LEJ Jul 24, 10:50 UTCJul 24, 14:30 UTC3h 40m
2026-07-24 BCS1RM LEJ → TLV Jul 24, 04:25 UTCJul 24, 07:50 UTC3h 25m
2026-07-23 BCS671 ALA → LEJ Jul 23, 18:05 UTCJul 24, 02:45 UTC8h 40m
2026-07-23 BCS671 ALA → LEJ Jul 23, 17:15 UTCJul 23, 17:25 UTC10m
2026-07-23 BCS692 - Jul 23, 13:45 UTCJul 23, 14:00 UTC15m
2026-07-23 BCS692 - Jul 23, 05:25 UTCJul 23, 09:00 UTC3h 35m
2026-07-22 BCS6TP BRU → LEJ Jul 22, 23:20 UTCJul 23, 00:20 UTC1h 0m
2026-07-22 BCS378 MXP → CVG Jul 22, 11:55 UTCJul 22, 19:25 UTC7h 30m
2026-07-21 BCS354 - Jul 21, 19:35 UTCJul 22, 04:05 UTC8h 30m
2026-07-21 BCS991 TLV → MXP Jul 21, 13:20 UTCJul 21, 17:30 UTC4h 10m
2026-07-21 BCS1RM LEJ → TLV Jul 21, 07:00 UTCJul 21, 10:20 UTC3h 20m
2026-07-19 BCS655 - Jul 19, 10:50 UTCJul 19, 14:55 UTC4h 5m
2026-07-18 BCS655 - Jul 18, 22:35 UTCJul 18, 23:00 UTC25m
2026-07-18 BCS644 - Jul 18, 19:35 UTCJul 18, 20:10 UTC35m
2026-07-18 BCS644 - Jul 18, 08:35 UTCJul 18, 12:15 UTC3h 40m
2026-07-17 BCS3QL BRU → LEJ Jul 17, 22:20 UTCJul 17, 23:20 UTC1h 0m
2026-07-17 BCS081 - Jul 17, 05:04 UTCJul 17, 19:40 UTC14h 35m
2026-07-17 BCS120 LEJ → BRU Jul 17, 01:55 UTCJul 17, 02:50 UTC55m
2026-07-16 BCS62A - Jul 16, 22:30 UTCJul 16, 23:20 UTC50m
2026-07-16 BCS081 BRU → BRU Jul 16, 05:30 UTCJul 16, 20:00 UTC14h 30m
2026-07-16 BCS120 - Jul 16, 02:15 UTCJul 16, 03:10 UTC55m
2026-07-15 BCS62A BRU → LEJ Jul 15, 22:40 UTCJul 15, 23:30 UTC50m
2026-07-15 BCS081 BRU → BRU Jul 15, 05:00 UTCJul 15, 20:50 UTC15h 50m
2026-07-15 BCS120 LEJ → BRU Jul 15, 02:15 UTCJul 15, 03:10 UTC55m
2026-07-14 BCS62A BRU → LEJ Jul 14, 22:15 UTCJul 14, 23:10 UTC54m
2026-07-14 BCS081 - Jul 14, 04:55 UTCJul 14, 19:55 UTC15h 0m
2026-07-14 BCS120 - Jul 14, 01:55 UTCJul 14, 02:55 UTC1h 0m
2026-07-13 BCS62A BRU → LEJ Jul 13, 22:20 UTCJul 13, 23:10 UTC50m
2026-07-13 BCS082 - Jul 13, 18:00 UTCJul 13, 20:05 UTC2h 5m
2026-07-12 BCS082 - Jul 12, 22:35 UTCJul 13, 20:05 UTC21h 30m
2026-07-12 BCS082 - Jul 12, 21:45 UTCJul 13, 20:05 UTC22h 20m
2026-07-12 BCS120 - Jul 12, 18:40 UTCJul 12, 19:40 UTC1h 0m
2026-07-12 BCS655 - Jul 12, 08:15 UTCJul 12, 14:45 UTC6h 30m
2026-07-12 BCS655 - Jul 12, 05:25 UTCJul 12, 05:45 UTC20m
2026-07-12 BCS655 - Jul 12, 00:50 UTCJul 12, 04:25 UTC3h 35m
2026-07-11 BCS655 - Jul 11, 22:40 UTCJul 11, 22:55 UTC15m
2026-07-11 BCS548 - Jul 11, 19:15 UTCJul 11, 19:55 UTC40m
2026-07-11 BCS548 - Jul 11, 14:30 UTCJul 11, 17:25 UTC2h 55m
2026-07-11 BCS548 LEJ → DEL Jul 11, 04:05 UTCJul 11, 11:15 UTC7h 10m
2026-07-10 BCS3QL BRU → LEJ Jul 10, 22:20 UTCJul 10, 23:15 UTC55m
2026-07-10 BCS081 - Jul 10, 05:10 UTCJul 10, 20:05 UTC14h 55m
2026-07-10 BCS120 LEJ → BRU Jul 10, 02:20 UTCJul 10, 03:10 UTC50m
2026-07-09 BCS653 - Jul 9, 12:20 UTCJul 9, 19:05 UTC6h 45m

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

Mode-S 3C70AA frequently asked

What is Mode-S code 3C70AA?
3C70AA is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALEJ.
Where is Mode-S 3C70AA registered?
Mode-S code 3C70AA is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C70AA broadcasting right now?
Mode-S 3C70AA 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 3C70AA, octal 17070252, decimal 3,961,002.
What flights does 3C70AA operate?
Mode-S 3C70AA has broadcast 20 distinct callsigns, including BCS120, BCS62A, BCS081, BCS082, BCS644.