Apparatus

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sensors Mode-S transponder

3E47B1

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ISIR · CESSNA 525 CitationJet

Hex
3E47B1
Octal
17443661
Decimal
4,081,585
Country
DE
Tail
D-ISIR
Type
C525
No current signal · last broadcast 10h ago
Flights observed
123
Distinct callsigns
2
Country
DE
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 3E47B1.

Country allocation

The ICAO 24-bit address 3E47B1 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 2 distinct

Callsign Airline Flights Last seen
MCK308 - 121 2026-07-13
MCK307 - 2 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 MCK308 - Jul 13, 19:10 UTCJul 13, 20:45 UTC1h 35m
2026-07-13 MCK308 - Jul 13, 10:30 UTCJul 13, 11:55 UTC1h 25m
2026-07-13 MCK308 - Jul 13, 08:55 UTCJul 13, 09:20 UTC25m
2026-07-12 MCK308 - Jul 12, 11:40 UTCJul 12, 12:20 UTC40m
2026-07-12 MCK308 - Jul 12, 09:40 UTCJul 12, 11:05 UTC1h 25m
2026-07-12 MCK308 - Jul 12, 07:15 UTCJul 12, 08:15 UTC1h 0m
2026-07-11 MCK308 - Jul 11, 08:10 UTCJul 11, 08:50 UTC40m
2026-07-10 MCK308 - Jul 10, 11:05 UTCJul 10, 12:25 UTC1h 20m
2026-07-10 MCK308 - Jul 10, 08:55 UTCJul 10, 09:55 UTC1h 0m
2026-07-08 MCK308 - Jul 8, 11:25 UTCJul 8, 12:25 UTC1h 0m
2026-07-08 MCK308 - Jul 8, 09:35 UTCJul 8, 10:35 UTC1h 0m
2026-07-03 MCK308 - Jul 3, 16:45 UTCJul 3, 17:15 UTC30m
2026-07-03 MCK308 - Jul 3, 13:35 UTCJul 3, 14:10 UTC35m
2026-07-03 MCK308 - Jul 3, 11:45 UTCJul 3, 12:40 UTC55m
2026-07-02 MCK308 - Jul 2, 17:25 UTCJul 2, 18:25 UTC1h 0m
2026-07-02 MCK308 LCY → GVA Jul 2, 14:55 UTCJul 2, 16:25 UTC1h 30m
2026-07-02 MCK308 - Jul 2, 09:10 UTCJul 2, 10:00 UTC50m
2026-07-02 MCK308 - Jul 2, 07:05 UTCJul 2, 08:35 UTC1h 30m
2026-06-30 MCK308 - Jun 30, 12:25 UTCJun 30, 13:35 UTC1h 10m
2026-06-19 MCK308 - Jun 19, 08:44 UTCJun 19, 08:59 UTC15m
2026-06-19 MCK308 - Jun 19, 06:54 UTCJun 19, 07:49 UTC55m
2026-06-18 MCK308 - Jun 18, 13:00 UTCJun 18, 14:10 UTC1h 10m
2026-06-16 MCK308 - Jun 16, 09:50 UTCJun 16, 11:25 UTC1h 35m
2026-06-16 MCK308 IBZ → LCY Jun 16, 05:55 UTCJun 16, 08:39 UTC2h 45m
2026-06-15 MCK308 - Jun 15, 17:20 UTCJun 15, 18:35 UTC1h 15m
2026-06-15 MCK308 - Jun 15, 15:19 UTCJun 15, 16:24 UTC1h 5m
2026-06-14 MCK308 BER → BCN Jun 14, 12:40 UTCJun 14, 15:15 UTC2h 35m
2026-06-12 MCK308 - Jun 12, 11:15 UTCJun 12, 13:50 UTC2h 35m
2026-06-12 MCK308 - Jun 12, 09:20 UTCJun 12, 10:10 UTC50m
2026-06-12 MCK308 - Jun 12, 07:45 UTCJun 12, 08:20 UTC35m
2026-06-11 MCK308 MXP → GVA Jun 11, 13:40 UTCJun 11, 14:20 UTC40m
2026-06-11 MCK308 - Jun 11, 08:00 UTCJun 11, 08:40 UTC40m
2026-06-11 MCK308 - Jun 11, 06:15 UTCJun 11, 06:50 UTC35m
2026-06-11 MCK308 - Jun 11, 04:55 UTCJun 11, 05:35 UTC40m
2026-06-10 MCK308 - Jun 10, 16:20 UTCJun 10, 16:55 UTC35m
2026-06-08 MCK308 - Jun 8, 18:05 UTCJun 8, 18:40 UTC35m
2026-06-08 MCK308 - Jun 8, 13:45 UTCJun 8, 14:55 UTC1h 10m
2026-06-08 MCK308 - Jun 8, 09:35 UTCJun 8, 11:10 UTC1h 35m
2026-06-08 MCK308 - Jun 8, 08:10 UTCJun 8, 08:50 UTC40m
2026-06-07 MCK308 - Jun 7, 18:30 UTCJun 7, 20:20 UTC1h 50m
2026-06-07 MCK308 - Jun 7, 15:15 UTCJun 7, 16:10 UTC55m
2026-06-07 MCK308 - Jun 7, 13:25 UTCJun 7, 14:00 UTC35m
2026-06-06 MCK308 - Jun 6, 12:45 UTCJun 6, 13:54 UTC1h 10m
2026-06-06 MCK308 - Jun 6, 10:55 UTCJun 6, 11:55 UTC1h 0m
2026-06-06 MCK308 - Jun 6, 07:40 UTCJun 6, 09:39 UTC2h 0m
2026-06-04 MCK308 - Jun 4, 12:55 UTCJun 4, 13:35 UTC40m
2026-06-04 MCK308 - Jun 4, 10:35 UTCJun 4, 11:50 UTC1h 15m
2026-06-04 MCK308 ARN → LBG Jun 4, 07:10 UTCJun 4, 10:00 UTC2h 50m
2026-06-04 MCK308 - Jun 4, 03:30 UTCJun 4, 06:30 UTC3h 0m
2026-06-02 MCK308 - Jun 2, 08:45 UTCJun 2, 10:10 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-ISIR page for operator, model, and routing details .

Mode-S 3E47B1 frequently asked

What is Mode-S code 3E47B1?
3E47B1 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ISIR.
Where is Mode-S 3E47B1 registered?
Mode-S code 3E47B1 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3E47B1 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3E47B1, octal 17443661, decimal 4,081,585.
What flights does 3E47B1 operate?
Mode-S 3E47B1 has broadcast 2 distinct callsigns, including MCK308, MCK307.