Apparatus

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sensors Mode-S transponder

3F9C84

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to 57+04 · DORNIER 228

Hex
3F9C84
Octal
17716204
Decimal
4,168,836
Country
DE
Tail
57+04
Type
D228
Broadcasting now · callsign PCT396 · 2,775 ft
Flights observed
168
Distinct callsigns
20
Country
DE
Last broadcast
6h ago

Current position

3F9C84 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3F9C84 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
PCT309 - 3 2026-06-01
PCT285 - 3 2026-05-20
PCT225 - 3 2026-04-15
PCT222 - 3 2026-04-14
PCT904 - 2 2026-06-16
PCT391 - 2 2026-07-13
PCT388 - 2 2026-07-10
PCT381 - 2 2026-07-07
PCT379 - 2 2026-07-07
PCT378 - 2 2026-07-06
PCT376 - 2 2026-07-06
PCT375 - 2 2026-07-05
PCT374 - 2 2026-07-03
PCT373 - 2 2026-07-03
PCT372 - 2 2026-07-02
PCT371 - 2 2026-07-02
PCT366 - 2 2026-06-30
PCT365 - 2 2026-06-30
PCT363 - 2 2026-06-29
PCT362 - 2 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 PCT394 - Jul 14, 07:15 UTCJul 14, 10:30 UTC3h 15m
2026-07-13 PCT393 - Jul 13, 16:05 UTCJul 13, 18:55 UTC2h 50m
2026-07-13 PCT392 - Jul 13, 11:40 UTCJul 13, 15:10 UTC3h 30m
2026-07-13 PCT391 - Jul 13, 09:20 UTCJul 13, 10:45 UTC1h 25m
2026-07-13 PCT391 - Jul 13, 07:10 UTCJul 13, 08:40 UTC1h 30m
2026-07-11 PCT390 - Jul 11, 18:40 UTCJul 11, 22:05 UTC3h 25m
2026-07-10 PCT389 - Jul 10, 11:20 UTCJul 10, 14:35 UTC3h 15m
2026-07-10 PCT388 - Jul 10, 09:10 UTCJul 10, 10:10 UTC1h 0m
2026-07-10 PCT388 - Jul 10, 06:35 UTCJul 10, 07:55 UTC1h 20m
2026-07-09 PCT387 - Jul 9, 15:50 UTCJul 9, 19:05 UTC3h 15m
2026-07-07 PCT381 - Jul 7, 18:45 UTCJul 7, 19:20 UTC35m
2026-07-07 PCT381 - Jul 7, 16:05 UTCJul 7, 17:00 UTC55m
2026-07-07 PCT380 - Jul 7, 11:10 UTCJul 7, 14:55 UTC3h 45m
2026-07-07 PCT379 - Jul 7, 09:20 UTCJul 7, 10:30 UTC1h 10m
2026-07-07 PCT379 - Jul 7, 06:55 UTCJul 7, 08:05 UTC1h 10m
2026-07-06 PCT378 - Jul 6, 18:20 UTCJul 6, 19:30 UTC1h 10m
2026-07-06 PCT378 - Jul 6, 15:35 UTCJul 6, 17:15 UTC1h 40m
2026-07-06 PCT377 - Jul 6, 11:35 UTCJul 6, 14:45 UTC3h 10m
2026-07-06 PCT376 - Jul 6, 10:00 UTCJul 6, 10:50 UTC50m
2026-07-06 PCT376 - Jul 6, 07:45 UTCJul 6, 08:35 UTC50m
2026-07-05 PCT375 - Jul 5, 08:20 UTCJul 5, 10:10 UTC1h 50m
2026-07-05 PCT375 - Jul 5, 06:20 UTCJul 5, 07:50 UTC1h 30m
2026-07-03 PCT374 - Jul 3, 13:40 UTCJul 3, 14:50 UTC1h 10m
2026-07-03 PCT374 - Jul 3, 11:15 UTCJul 3, 13:05 UTC1h 50m
2026-07-03 PCT373 - Jul 3, 10:05 UTCJul 3, 10:35 UTC30m
2026-07-03 PCT373 - Jul 3, 07:05 UTCJul 3, 09:20 UTC2h 15m
2026-07-02 PCT372 - Jul 2, 18:40 UTCJul 2, 19:35 UTC55m
2026-07-02 PCT372 - Jul 2, 16:05 UTCJul 2, 17:05 UTC1h 0m
2026-07-02 PCT371 - Jul 2, 14:20 UTCJul 2, 15:15 UTC55m
2026-07-02 PCT371 - Jul 2, 12:15 UTCJul 2, 13:05 UTC50m
2026-07-02 PCT370 FCN → FCN Jul 2, 08:15 UTCJul 2, 11:25 UTC3h 10m
2026-06-30 PCT366 - Jun 30, 17:50 UTCJun 30, 19:20 UTC1h 30m
2026-06-30 PCT366 - Jun 30, 16:10 UTCJun 30, 17:20 UTC1h 10m
2026-06-30 PCT365 - Jun 30, 14:35 UTCJun 30, 15:00 UTC25m
2026-06-30 PCT365 - Jun 30, 11:35 UTCJun 30, 12:30 UTC55m
2026-06-29 PCT363 - Jun 29, 18:34 UTCJun 29, 19:35 UTC1h 0m
2026-06-29 PCT363 - Jun 29, 16:00 UTCJun 29, 16:59 UTC1h 0m
2026-06-29 PCT362 - Jun 29, 13:19 UTCJun 29, 15:14 UTC1h 55m
2026-06-29 PCT362 - Jun 29, 11:50 UTCJun 29, 12:24 UTC35m
2026-06-29 PCT361 - Jun 29, 09:54 UTCJun 29, 10:50 UTC55m
2026-06-29 PCT361 - Jun 29, 07:09 UTCJun 29, 07:55 UTC45m
2026-06-27 PCT360 - Jun 27, 18:49 UTCJun 27, 22:09 UTC3h 20m
2026-06-26 PCT359 - Jun 26, 11:14 UTCJun 26, 14:19 UTC3h 5m
2026-06-26 PCT358 - Jun 26, 06:50 UTCJun 26, 10:20 UTC3h 30m
2026-06-25 PCT357 - Jun 25, 16:05 UTCJun 25, 19:20 UTC3h 15m
2026-06-25 PCT356 - Jun 25, 11:15 UTCJun 25, 15:10 UTC3h 55m
2026-06-25 PCT355 - Jun 25, 08:50 UTCJun 25, 10:20 UTC1h 30m
2026-06-25 PCT355 - Jun 25, 06:40 UTCJun 25, 08:09 UTC1h 30m
2026-06-24 PCT354 - Jun 24, 16:05 UTCJun 24, 19:20 UTC3h 15m
2026-06-24 PCT353 - Jun 24, 14:34 UTCJun 24, 15:29 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 57+04 page for operator, model, and routing details .

Mode-S 3F9C84 frequently asked

What is Mode-S code 3F9C84?
3F9C84 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to 57+04.
Where is Mode-S 3F9C84 registered?
Mode-S code 3F9C84 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3F9C84 broadcasting right now?
Yes. Mode-S 3F9C84 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3F9C84, octal 17716204, decimal 4,168,836.
What flights does 3F9C84 operate?
Mode-S 3F9C84 has broadcast 20 distinct callsigns, including PCT309, PCT285, PCT225, PCT222, PCT904.