Apparatus

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sensors Mode-S transponder

39A204

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HIQE · BOEING 737-800

Hex
39A204
Octal
16321004
Decimal
3,777,028
Country
FR
Tail
F-HIQE
Type
B738
No current signal · last broadcast 42m ago
Flights observed
216
Distinct callsigns
15
Country
FR
Last broadcast
42m ago

Last known position

Most recent position reported by Mode-S 39A204.

Country allocation

The ICAO 24-bit address 39A204 falls within the block assigned to France (FR) by ICAO Annex 10, Volume III. Every aircraft registered in France 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 15 distinct

Callsign Airline Flights Last seen
TAY3KN - 34 2026-07-17
FPO7NN - 33 2026-07-14
TAY8KN - 32 2026-07-17
FPO9NN - 31 2026-07-14
FPO6LQ - 28 2026-06-28
FPO7LQ - 27 2026-06-29
FPO4JU - 17 2026-05-07
FPO3JU Europe Airpost 3 2026-04-17
TAY9IE ASL Airlines Belgium 2 2026-07-06
FPO8RB - 2 2026-06-22
FPO6RB - 2 2026-06-21
FPO199 Europe Airpost 2 2026-06-11
FPO399 Europe Airpost 1 2026-06-11
FPO398 - 1 2026-04-18
FPO198 Europe Airpost 1 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 TAY8KN PRG → CDG Jul 17, 21:15 UTCJul 17, 22:40 UTC1h 25m
2026-07-17 TAY8KN KUN → PRG Jul 17, 18:19 UTCJul 17, 19:40 UTC1h 20m
2026-07-17 TAY3KN - Jul 17, 05:35 UTCJul 17, 06:10 UTC35m
2026-07-17 TAY3KN CDG → WAW Jul 17, 02:50 UTCJul 17, 04:39 UTC1h 50m
2026-07-16 TAY8KN PRG → CDG Jul 16, 21:15 UTCJul 16, 22:45 UTC1h 30m
2026-07-16 TAY8KN KUN → PRG Jul 16, 18:19 UTCJul 16, 19:35 UTC1h 15m
2026-07-16 TAY3KN WAW → KUN Jul 16, 05:40 UTCJul 16, 06:25 UTC45m
2026-07-16 TAY3KN CDG → WAW Jul 16, 02:40 UTCJul 16, 04:35 UTC1h 55m
2026-07-15 TAY8KN PRG → CDG Jul 15, 20:45 UTCJul 15, 22:10 UTC1h 25m
2026-07-15 TAY8KN KUN → PRG Jul 15, 18:10 UTCJul 15, 19:25 UTC1h 15m
2026-07-15 TAY3KN - Jul 15, 05:25 UTCJul 15, 06:05 UTC40m
2026-07-15 TAY3KN - Jul 15, 02:40 UTCJul 15, 04:25 UTC1h 45m
2026-07-14 FPO9NN - Jul 14, 21:10 UTCJul 14, 22:25 UTC1h 15m
2026-07-14 FPO9NN - Jul 14, 19:40 UTCJul 14, 20:05 UTC25m
2026-07-14 FPO7NN - Jul 14, 04:35 UTCJul 14, 05:05 UTC30m
2026-07-14 FPO7NN - Jul 14, 02:20 UTCJul 14, 03:35 UTC1h 15m
2026-07-13 TAY8KN - Jul 13, 20:50 UTCJul 13, 22:20 UTC1h 30m
2026-07-13 TAY8KN KUN → PRG Jul 13, 18:20 UTCJul 13, 19:40 UTC1h 20m
2026-07-12 TAY3KN - Jul 12, 05:40 UTCJul 12, 06:20 UTC40m
2026-07-12 TAY3KN CDG → WAW Jul 12, 02:40 UTCJul 12, 04:40 UTC2h 0m
2026-07-10 TAY8KN PRG → CDG Jul 10, 20:45 UTCJul 10, 22:05 UTC1h 20m
2026-07-10 TAY8KN KUN → PRG Jul 10, 18:05 UTCJul 10, 19:20 UTC1h 15m
2026-07-10 TAY3KN - Jul 10, 05:20 UTCJul 10, 06:00 UTC40m
2026-07-10 TAY3KN - Jul 10, 02:30 UTCJul 10, 04:20 UTC1h 50m
2026-07-09 TAY8KN - Jul 9, 20:45 UTCJul 9, 22:10 UTC1h 25m
2026-07-09 TAY8KN - Jul 9, 18:15 UTCJul 9, 19:25 UTC1h 10m
2026-07-09 TAY3KN - Jul 9, 05:25 UTCJul 9, 06:05 UTC40m
2026-07-09 TAY3KN - Jul 9, 02:30 UTCJul 9, 04:20 UTC1h 50m
2026-07-08 TAY8KN PRG → CDG Jul 8, 20:45 UTCJul 8, 22:05 UTC1h 20m
2026-07-08 TAY8KN KUN → PRG Jul 8, 18:20 UTCJul 8, 19:35 UTC1h 15m
2026-07-08 TAY3KN - Jul 8, 05:45 UTCJul 8, 06:25 UTC40m
2026-07-08 TAY3KN - Jul 8, 02:55 UTCJul 8, 04:50 UTC1h 55m
2026-07-07 TAY8KN PRG → CDG Jul 7, 20:40 UTCJul 7, 22:00 UTC1h 20m
2026-07-07 TAY8KN KUN → PRG Jul 7, 18:15 UTCJul 7, 19:30 UTC1h 15m
2026-07-07 TAY3KN - Jul 7, 05:35 UTCJul 7, 06:10 UTC35m
2026-07-07 TAY3KN - Jul 7, 02:30 UTCJul 7, 04:25 UTC1h 55m
2026-07-06 TAY9IE VIE → CDG Jul 6, 21:10 UTCJul 6, 22:50 UTC1h 40m
2026-07-06 TAY9IE VIE → CDG Jul 6, 18:25 UTCJul 6, 19:55 UTC1h 30m
2026-07-05 TAY3KN - Jul 5, 05:30 UTCJul 5, 06:10 UTC40m
2026-07-05 TAY3KN - Jul 5, 02:35 UTCJul 5, 04:30 UTC1h 55m
2026-07-03 TAY8KN PRG → CDG Jul 3, 20:50 UTCJul 3, 22:10 UTC1h 20m
2026-07-03 TAY8KN KUN → PRG Jul 3, 18:20 UTCJul 3, 19:40 UTC1h 20m
2026-07-03 TAY3KN - Jul 3, 05:30 UTCJul 3, 06:05 UTC35m
2026-07-03 TAY3KN - Jul 3, 02:35 UTCJul 3, 04:25 UTC1h 50m
2026-07-02 TAY8KN PRG → CDG Jul 2, 20:40 UTCJul 2, 22:05 UTC1h 25m
2026-07-02 TAY8KN KUN → PRG Jul 2, 18:10 UTCJul 2, 19:30 UTC1h 20m
2026-07-02 TAY3KN - Jul 2, 05:55 UTCJul 2, 06:35 UTC40m
2026-07-02 TAY3KN - Jul 2, 03:05 UTCJul 2, 04:55 UTC1h 50m
2026-07-01 TAY8KN - Jul 1, 20:50 UTCJul 1, 22:15 UTC1h 25m
2026-07-01 TAY8KN - Jul 1, 18:25 UTCJul 1, 19:50 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 F-HIQE page for operator, model, and routing details .

Mode-S 39A204 frequently asked

What is Mode-S code 39A204?
39A204 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HIQE.
Where is Mode-S 39A204 registered?
Mode-S code 39A204 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39A204 broadcasting right now?
No active broadcast right now. Last signal was 42m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39A204, octal 16321004, decimal 3,777,028.
What flights does 39A204 operate?
Mode-S 39A204 has broadcast 15 distinct callsigns, including TAY3KN, FPO7NN, TAY8KN, FPO9NN, FPO6LQ.