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
Broadcasting now · callsign KLC25X · 17,675 ft
Flights observed
711
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 18:20 UTC

Current position

3C1AEB is currently broadcasting. Map zoomed to live position.

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 KLM Royal Dutch Airlines 47 2026-07-21
KLM39R - 45 2026-07-21
KLM32F KLM Royal Dutch Airlines 44 2026-07-21
KLM91K KLM Royal Dutch Airlines 43 2026-07-20
KLM56H KLM Royal Dutch Airlines 38 2026-07-21
KLM17V KLM Royal Dutch Airlines 37 2026-07-21
KLM96E KLM Royal Dutch Airlines 31 2026-07-26
KLM1498 KLM Royal Dutch Airlines 30 2026-07-26
KLM1497 KLM Royal Dutch Airlines 30 2026-07-26
KLM95Y KLM Royal Dutch Airlines 29 2026-07-26
KLM47T KLM Royal Dutch Airlines 22 2026-07-24
KLM44K KLM Royal Dutch Airlines 21 2026-07-24
KLM46V - 19 2026-06-29
KLM1821 KLM Royal Dutch Airlines 18 2026-06-29
KLM66C KLM Royal Dutch Airlines 15 2026-07-21
KLM991 KLM Royal Dutch Airlines 14 2026-07-21
KLM1844 KLM Royal Dutch Airlines 14 2026-07-25
KLM1479 - 14 2026-07-02
KLM10Y - 14 2026-07-02
KLM76K KLM Royal Dutch Airlines 11 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KLM24P CDG → AMS Jul 26, 16:45 UTCJul 26, 18:15 UTC1h 30m
2026-07-26 KLM1307 AMS → TLS Jul 26, 14:40 UTCJul 26, 15:55 UTC1h 15m
2026-07-26 KLM96E VCE → AMS Jul 26, 12:35 UTCJul 26, 13:25 UTC50m
2026-07-26 KLM95Y AMS → EDI Jul 26, 10:55 UTCJul 26, 11:40 UTC45m
2026-07-26 KLM1498 BCN → AMS Jul 26, 07:35 UTCJul 26, 09:35 UTC2h 0m
2026-07-26 KLM1497 AMS → BCN Jul 26, 04:45 UTCJul 26, 06:25 UTC1h 40m
2026-07-25 KLM30Q WAW → AMS Jul 25, 16:45 UTCJul 25, 17:40 UTC55m
2026-07-25 KLM87E AMS → STR Jul 25, 15:00 UTCJul 25, 15:50 UTC50m
2026-07-25 KLM1844 NUE → AMS Jul 25, 12:30 UTCJul 25, 13:35 UTC1h 5m
2026-07-25 KLM71F AMS → LIS Jul 25, 10:50 UTCJul 25, 11:40 UTC50m
2026-07-25 KLM92M NUE → AMS Jul 25, 08:10 UTCJul 25, 09:10 UTC1h 0m
2026-07-25 KLM25X AMS → NUE Jul 25, 06:25 UTCJul 25, 07:10 UTC45m
2026-07-25 KLM76K VIE → AMS Jul 25, 04:20 UTCJul 25, 05:20 UTC1h 0m
2026-07-24 KLM59F AMS → NUE Jul 24, 20:05 UTCJul 24, 20:50 UTC45m
2026-07-24 KLM44K CWL → AMS Jul 24, 16:35 UTCJul 24, 17:35 UTC1h 0m
2026-07-24 KLM47T AMS → CWL Jul 24, 14:50 UTCJul 24, 15:50 UTC1h 0m
2026-07-24 KLM1844 NUE → AMS Jul 24, 12:35 UTCJul 24, 13:35 UTC1h 0m
2026-07-24 KLM71F AMS → LIS Jul 24, 10:55 UTCJul 24, 11:50 UTC55m
2026-07-24 KLM1944 ZAG → AMS Jul 24, 08:35 UTCJul 24, 09:45 UTC1h 10m
2026-07-24 KLM1943 AMS → ZAG Jul 24, 06:35 UTCJul 24, 07:30 UTC55m
2026-07-24 KLM76K VIE → AMS Jul 24, 04:10 UTCJul 24, 05:10 UTC1h 0m
2026-07-23 KLM59F AMS → NUE Jul 23, 19:50 UTCJul 23, 20:45 UTC55m
2026-07-23 KLM30Q WAW → AMS Jul 23, 16:45 UTCJul 23, 17:50 UTC1h 5m
2026-07-23 KLM87E AMS → STR Jul 23, 14:50 UTCJul 23, 15:40 UTC50m
2026-07-23 KLM1844 NUE → AMS Jul 23, 12:45 UTCJul 23, 13:45 UTC1h 0m
2026-07-23 KLM71F AMS → LIS Jul 23, 11:00 UTCJul 23, 11:55 UTC55m
2026-07-23 KLM1944 ZAG → AMS Jul 23, 08:55 UTCJul 23, 09:55 UTC1h 0m
2026-07-23 KLM1943 AMS → ZAG Jul 23, 07:00 UTCJul 23, 08:00 UTC1h 0m
2026-07-23 KLM76K VIE → AMS Jul 23, 04:10 UTCJul 23, 05:10 UTC1h 0m
2026-07-22 KLM59F AMS → NUE Jul 22, 20:00 UTCJul 22, 20:55 UTC55m
2026-07-22 KLM30Q STR → AMS Jul 22, 16:50 UTCJul 22, 17:55 UTC1h 5m
2026-07-22 KLM87E - Jul 22, 14:55 UTCJul 22, 15:45 UTC50m
2026-07-22 KLM96E VCE → AMS Jul 22, 12:25 UTCJul 22, 13:20 UTC55m
2026-07-22 KLM95Y AMS → EDI Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 KLM1497 AMS → BCN Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-21 KLM66C TRF → AMS Jul 21, 17:20 UTCJul 21, 18:05 UTC45m
2026-07-21 KLM991 AMS → LCY Jul 21, 15:35 UTCJul 21, 16:15 UTC40m
2026-07-21 KLM32F AAL → AMS Jul 21, 12:30 UTCJul 21, 13:35 UTC1h 5m
2026-07-21 KLM39R - Jul 21, 10:45 UTCJul 21, 11:45 UTC1h 0m
2026-07-21 KLM56H LUX → AMS Jul 21, 08:45 UTCJul 21, 09:30 UTC45m
2026-07-21 KLM17V AMS → LUX Jul 21, 07:20 UTCJul 21, 07:55 UTC35m
2026-07-21 KLM1282 EDI → AMS Jul 21, 04:30 UTCJul 21, 05:35 UTC1h 5m
2026-07-20 KLM91K AMS → AAL Jul 20, 19:50 UTCJul 20, 20:50 UTC1h 0m
2026-07-20 KLM1182 LPI → AMS Jul 20, 17:10 UTCJul 20, 18:15 UTC1h 5m
2026-07-20 KLM57R AMS → SVG Jul 20, 15:15 UTCJul 20, 16:25 UTC1h 10m
2026-07-20 KLM96E VCE → AMS Jul 20, 13:15 UTCJul 20, 14:10 UTC55m
2026-07-20 KLM95Y AMS → EDI Jul 20, 11:30 UTCJul 20, 12:15 UTC45m
2026-07-20 KLM1498 BCN → AMS Jul 20, 08:10 UTCJul 20, 10:10 UTC2h 0m
2026-07-20 KLM1497 AMS → BCN Jul 20, 04:50 UTCJul 20, 06:40 UTC1h 50m
2026-07-19 KLM24P CDG → AMS Jul 19, 16:45 UTCJul 19, 18:10 UTC1h 25m

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?
Yes. Mode-S 3C1AEB is currently airborne.
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.