Apparatus

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sensors Mode-S transponder

39A207

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HIQH · BOEING 737-800

Hex
39A207
Octal
16321007
Decimal
3,777,031
Country
FR
Tail
F-HIQH
Type
B738
No current signal · last broadcast 7h ago
Flights observed
86
Distinct callsigns
6
Country
FR
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 39A207.

Country allocation

The ICAO 24-bit address 39A207 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 6 distinct

Callsign Airline Flights Last seen
FPO4UD Europe Airpost 40 2026-05-28
FPO3UD - 34 2026-05-28
FPO9NN - 4 2026-05-12
FPO7NN - 4 2026-05-12
FPO9IE - 2 2026-05-29
FPO8IE - 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 FPO9IE VIE → CDG May 29, 21:10 UTCMay 29, 22:45 UTC1h 35m
2026-05-29 FPO8IE - May 29, 02:15 UTCMay 29, 03:45 UTC1h 30m
2026-05-28 FPO4UD CDG → BUD May 28, 18:45 UTCMay 28, 20:40 UTC1h 55m
2026-05-28 FPO3UD - May 28, 03:00 UTCMay 28, 04:45 UTC1h 45m
2026-05-27 FPO4UD CDG → BUD May 27, 18:45 UTCMay 27, 20:40 UTC1h 55m
2026-05-27 FPO3UD CDG → BUD May 27, 02:54 UTCMay 27, 04:30 UTC1h 35m
2026-05-26 FPO4UD CDG → BUD May 26, 18:50 UTCMay 26, 20:45 UTC1h 55m
2026-05-26 FPO3UD - May 26, 02:55 UTCMay 26, 04:35 UTC1h 40m
2026-05-25 FPO9IE - May 25, 21:04 UTCMay 25, 22:44 UTC1h 40m
2026-05-25 FPO8IE - May 25, 18:00 UTCMay 25, 19:35 UTC1h 35m
2026-05-24 FPO3UD - May 24, 20:25 UTCMay 24, 21:50 UTC1h 25m
2026-05-24 FPO3UD - May 24, 17:10 UTCMay 24, 19:05 UTC1h 55m
2026-05-22 FPO4UD CDG → BUD May 22, 21:10 UTCMay 22, 22:15 UTC1h 5m
2026-05-22 FPO4UD CDG → BUD May 22, 18:50 UTCMay 22, 20:15 UTC1h 25m
2026-05-22 FPO3UD - May 22, 03:00 UTCMay 22, 04:50 UTC1h 50m
2026-05-21 FPO4UD CDG → BUD May 21, 18:45 UTCMay 21, 20:35 UTC1h 50m
2026-05-21 FPO3UD - May 21, 02:50 UTCMay 21, 04:30 UTC1h 40m
2026-05-20 FPO4UD CDG → BUD May 20, 18:45 UTCMay 20, 20:35 UTC1h 50m
2026-05-20 FPO3UD CDG → BUD May 20, 02:55 UTCMay 20, 04:30 UTC1h 35m
2026-05-19 FPO4UD CDG → BUD May 19, 18:45 UTCMay 19, 20:35 UTC1h 50m
2026-05-19 FPO3UD CDG → BUD May 19, 03:30 UTCMay 19, 05:15 UTC1h 45m
2026-05-18 FPO4UD CDG → BUD May 18, 18:50 UTCMay 18, 20:35 UTC1h 45m
2026-05-17 FPO3UD CDG → BUD May 17, 19:55 UTCMay 17, 21:40 UTC1h 45m
2026-05-15 FPO4UD CDG → BUD May 15, 21:05 UTCMay 15, 22:00 UTC55m
2026-05-15 FPO4UD CDG → BUD May 15, 19:00 UTCMay 15, 20:15 UTC1h 15m
2026-05-15 FPO3UD CDG → BUD May 15, 03:05 UTCMay 15, 04:45 UTC1h 40m
2026-05-14 FPO4UD CDG → BUD May 14, 18:50 UTCMay 14, 20:40 UTC1h 50m
2026-05-14 FPO3UD - May 14, 02:55 UTCMay 14, 04:35 UTC1h 40m
2026-05-13 FPO4UD CDG → BUD May 13, 18:55 UTCMay 13, 20:50 UTC1h 55m
2026-05-13 FPO3UD CDG → BUD May 13, 02:50 UTCMay 13, 04:30 UTC1h 40m
2026-05-12 FPO9NN DUB → CDG May 12, 21:01 UTCMay 12, 22:20 UTC1h 20m
2026-05-12 FPO9NN - May 12, 19:35 UTCMay 12, 20:01 UTC25m
2026-05-12 FPO7NN - May 12, 04:50 UTCMay 12, 05:10 UTC20m
2026-05-12 FPO7NN - May 12, 02:45 UTCMay 12, 03:50 UTC1h 5m
2026-05-11 FPO9NN - May 11, 21:10 UTCMay 11, 22:35 UTC1h 24m
2026-05-11 FPO9NN - May 11, 19:45 UTCMay 11, 20:10 UTC25m
2026-05-10 FPO7NN - May 10, 21:04 UTCMay 10, 21:35 UTC30m
2026-05-10 FPO7NN CDG → DUB May 10, 18:39 UTCMay 10, 19:54 UTC1h 15m
2026-05-08 FPO4UD CDG → BUD May 8, 21:00 UTCMay 8, 22:05 UTC1h 5m
2026-05-08 FPO4UD CDG → BUD May 8, 18:45 UTCMay 8, 20:10 UTC1h 25m
2026-05-08 FPO3UD - May 8, 02:55 UTCMay 8, 04:29 UTC1h 35m
2026-05-07 FPO4UD CDG → BUD May 7, 18:45 UTCMay 7, 20:40 UTC1h 55m
2026-05-07 FPO3UD - May 7, 03:00 UTCMay 7, 04:40 UTC1h 40m
2026-05-06 FPO4UD CDG → BUD May 6, 18:45 UTCMay 6, 20:35 UTC1h 50m
2026-05-06 FPO3UD - May 6, 02:55 UTCMay 6, 04:35 UTC1h 40m
2026-05-05 FPO4UD CDG → BUD May 5, 18:35 UTCMay 5, 20:30 UTC1h 55m
2026-05-05 FPO3UD - May 5, 02:45 UTCMay 5, 04:25 UTC1h 40m
2026-05-04 FPO4UD CDG → BUD May 4, 18:40 UTCMay 4, 20:45 UTC2h 5m
2026-05-03 FPO3UD - May 3, 20:00 UTCMay 3, 21:44 UTC1h 45m
2026-04-30 FPO4UD CDG → BUD Apr 30, 20:15 UTCApr 30, 22:10 UTC1h 55m

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

Mode-S 39A207 frequently asked

What is Mode-S code 39A207?
39A207 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HIQH.
Where is Mode-S 39A207 registered?
Mode-S code 39A207 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39A207 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39A207, octal 16321007, decimal 3,777,031.
What flights does 39A207 operate?
Mode-S 39A207 has broadcast 6 distinct callsigns, including FPO4UD, FPO3UD, FPO9NN, FPO7NN, FPO9IE.