Apparatus

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sensors Mode-S transponder

3C1AEB

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AZFA · EMBRAER ERJ-190-100

Hex
3C1AEB
Octal
17015353
Decimal
3,939,051
Country
DE
Tail
D-AZFA
Type
E190
No current signal · last broadcast 4h ago
Flights observed
629
Distinct callsigns
20
Country
DE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 3C1AEB.

Country allocation

The ICAO 24-bit address 3C1AEB 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
KLM1282 - 46 2026-06-26
KLM39R - 44 2026-06-26
KLM32F - 43 2026-06-26
KLM91K - 42 2026-06-25
KLM56H - 37 2026-06-26
KLM17V - 36 2026-06-26
KLM1498 - 24 2026-07-14
KLM96E - 23 2026-07-14
KLM1497 - 23 2026-07-14
KLM95Y - 22 2026-07-14
KLM47T - 21 2026-07-03
KLM44K - 20 2026-07-03
KLM46V - 19 2026-06-29
KLM1821 KLM Royal Dutch Airlines 18 2026-06-29
KLM66C - 14 2026-06-30
KLM1479 - 14 2026-07-02
KLM10Y - 14 2026-07-02
KLM991 KLM Royal Dutch Airlines 13 2026-06-30
KLM1844 - 11 2026-06-30
KLM911 - 10 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KLM1182 - Jul 14, 16:40 UTCJul 14, 17:50 UTC1h 10m
2026-07-14 KLM57R - Jul 14, 14:50 UTCJul 14, 16:00 UTC1h 10m
2026-07-14 KLM96E FRA → AMS Jul 14, 12:35 UTCJul 14, 13:25 UTC50m
2026-07-14 KLM95Y - Jul 14, 10:45 UTCJul 14, 11:30 UTC45m
2026-07-14 KLM1498 BCN → AMS Jul 14, 08:00 UTCJul 14, 09:50 UTC1h 50m
2026-07-14 KLM1497 - Jul 14, 05:10 UTCJul 14, 07:05 UTC1h 55m
2026-07-09 KLM1182 - Jul 9, 18:40 UTCJul 9, 20:10 UTC1h 30m
2026-07-09 KLM57R - Jul 9, 15:45 UTCJul 9, 17:05 UTC1h 20m
2026-07-09 KLM96E FRA → AMS Jul 9, 13:25 UTCJul 9, 14:15 UTC50m
2026-07-09 KLM95Y - Jul 9, 11:10 UTCJul 9, 11:55 UTC45m
2026-07-09 KLM1498 BCN → AMS Jul 9, 07:55 UTCJul 9, 09:40 UTC1h 45m
2026-07-09 KLM1497 AMS → BCN Jul 9, 04:50 UTCJul 9, 06:45 UTC1h 55m
2026-07-08 KLM30Q STR → AMS Jul 8, 16:45 UTCJul 8, 17:45 UTC1h 0m
2026-07-08 KLM87E - Jul 8, 15:05 UTCJul 8, 15:55 UTC50m
2026-07-08 KLM1498 BCN → AMS Jul 8, 10:20 UTCJul 8, 12:20 UTC2h 0m
2026-07-08 KLM1497 - Jul 8, 07:20 UTCJul 8, 08:55 UTC1h 35m
2026-07-06 KLM1498 - Jul 6, 07:50 UTCJul 6, 09:45 UTC1h 55m
2026-07-06 KLM1497 - Jul 6, 04:45 UTCJul 6, 06:30 UTC1h 45m
2026-07-04 KLM1182 LPI → AMS Jul 4, 16:40 UTCJul 4, 17:45 UTC1h 5m
2026-07-04 KLM57R - Jul 4, 14:45 UTCJul 4, 15:55 UTC1h 10m
2026-07-04 KLM68C - Jul 4, 13:00 UTCJul 4, 13:25 UTC25m
2026-07-04 KLM1801 - Jul 4, 11:40 UTCJul 4, 12:05 UTC25m
2026-07-04 KLM50W - Jul 4, 09:40 UTCJul 4, 10:25 UTC45m
2026-07-04 KLM25Y - Jul 4, 07:50 UTCJul 4, 08:35 UTC45m
2026-07-04 KLM88A DUS → AMS Jul 4, 05:45 UTCJul 4, 06:15 UTC30m
2026-07-03 KLM1805 AMS → DUS Jul 3, 20:15 UTCJul 3, 20:45 UTC30m
2026-07-03 KLM44K - Jul 3, 17:05 UTCJul 3, 18:10 UTC1h 5m
2026-07-03 KLM47T - Jul 3, 14:50 UTCJul 3, 15:55 UTC1h 5m
2026-07-03 KLM68C - Jul 3, 12:55 UTCJul 3, 13:25 UTC30m
2026-07-03 KLM1801 - Jul 3, 11:30 UTCJul 3, 12:00 UTC30m
2026-07-03 KLM90U ABZ → AMS Jul 3, 08:25 UTCJul 3, 09:35 UTC1h 10m
2026-07-03 KLM911 - Jul 3, 06:20 UTCJul 3, 07:40 UTC1h 20m
2026-07-03 KLM88A - Jul 3, 04:30 UTCJul 3, 05:00 UTC30m
2026-07-02 KLM1805 AMS → DUS Jul 2, 20:05 UTCJul 2, 20:30 UTC25m
2026-07-02 KLM10Y - Jul 2, 17:25 UTCJul 2, 19:00 UTC1h 35m
2026-07-02 KLM1479 AMS → NCE Jul 2, 14:50 UTCJul 2, 16:20 UTC1h 30m
2026-07-02 KLM68C DUS → AMS Jul 2, 13:00 UTCJul 2, 13:30 UTC30m
2026-07-02 KLM1801 AMS → DUS Jul 2, 11:35 UTCJul 2, 12:00 UTC25m
2026-07-02 KLM1174 - Jul 2, 08:25 UTCJul 2, 09:40 UTC1h 15m
2026-07-02 KLM33B - Jul 2, 06:30 UTCJul 2, 07:35 UTC1h 5m
2026-07-02 KLM88A - Jul 2, 04:35 UTCJul 2, 05:10 UTC35m
2026-07-01 KLM1805 AMS → DUS Jul 1, 20:10 UTCJul 1, 20:35 UTC25m
2026-07-01 KLM44K - Jul 1, 16:35 UTCJul 1, 17:25 UTC50m
2026-07-01 KLM47T - Jul 1, 14:55 UTCJul 1, 15:55 UTC1h 0m
2026-07-01 KLM68C - Jul 1, 12:55 UTCJul 1, 13:25 UTC30m
2026-07-01 KLM1801 - Jul 1, 11:25 UTCJul 1, 11:55 UTC30m
2026-07-01 KLM1174 - Jul 1, 08:25 UTCJul 1, 09:45 UTC1h 20m
2026-07-01 KLM33B - Jul 1, 06:30 UTCJul 1, 07:40 UTC1h 10m
2026-07-01 KLM88A DUS → AMS Jul 1, 04:35 UTCJul 1, 05:10 UTC35m
2026-06-30 KLM1805 AMS → DUS Jun 30, 19:55 UTCJun 30, 20:25 UTC30m

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

Mode-S 3C1AEB frequently asked

What is Mode-S code 3C1AEB?
3C1AEB is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AZFA.
Where is Mode-S 3C1AEB registered?
Mode-S code 3C1AEB is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C1AEB broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C1AEB, octal 17015353, decimal 3,939,051.
What flights does 3C1AEB operate?
Mode-S 3C1AEB has broadcast 20 distinct callsigns, including KLM1282, KLM39R, KLM32F, KLM91K, KLM56H.