Apparatus

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sensors Mode-S transponder

3994CF

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HFGP · BEECHCRAFT Super King Air 350

Hex
3994CF
Octal
16312317
Decimal
3,773,647
Country
FR
Tail
F-HFGP
Type
B350
No current signal · last broadcast 11d ago
Flights observed
89
Distinct callsigns
4
Country
FR
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 3994CF.

Country allocation

The ICAO 24-bit address 3994CF 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 4 distinct

Callsign Airline Flights Last seen
RIV153 - 29 2026-07-01
RIV152 - 26 2026-07-01
RIV155 - 17 2026-07-03
RIV154 APG Airlines 17 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-03 RIV155 - Jul 3, 17:25 UTCJul 3, 18:45 UTC1h 20m
2026-07-03 RIV154 TLS → LRT Jul 3, 15:25 UTCJul 3, 16:45 UTC1h 20m
2026-07-02 RIV155 - Jul 2, 17:30 UTCJul 2, 18:55 UTC1h 25m
2026-07-01 RIV153 - Jul 1, 08:05 UTCJul 1, 09:20 UTC1h 15m
2026-07-01 RIV152 - Jul 1, 05:25 UTCJul 1, 07:00 UTC1h 35m
2026-06-30 RIV153 - Jun 30, 07:25 UTCJun 30, 08:35 UTC1h 10m
2026-06-30 RIV152 - Jun 30, 05:20 UTCJun 30, 06:35 UTC1h 15m
2026-06-29 RIV153 - Jun 29, 07:25 UTCJun 29, 08:44 UTC1h 20m
2026-06-29 RIV152 - Jun 29, 05:15 UTCJun 29, 06:29 UTC1h 15m
2026-06-26 RIV155 LRT → TLS Jun 26, 17:15 UTCJun 26, 18:34 UTC1h 20m
2026-06-26 RIV154 TLS → LRT Jun 26, 15:34 UTCJun 26, 16:44 UTC1h 10m
2026-06-25 RIV155 LRT → TLS Jun 25, 17:30 UTCJun 25, 18:50 UTC1h 20m
2026-06-25 RIV154 TLS → LRT Jun 25, 15:24 UTCJun 25, 16:35 UTC1h 10m
2026-06-24 RIV153 - Jun 24, 07:24 UTCJun 24, 08:45 UTC1h 20m
2026-06-24 RIV152 TLS → LRT Jun 24, 05:15 UTCJun 24, 06:35 UTC1h 20m
2026-06-23 RIV153 - Jun 23, 07:19 UTCJun 23, 08:35 UTC1h 15m
2026-06-23 RIV152 TLS → LRT Jun 23, 05:09 UTCJun 23, 06:29 UTC1h 20m
2026-06-22 RIV153 LRT → TLS Jun 22, 07:25 UTCJun 22, 08:40 UTC1h 15m
2026-06-22 RIV152 TLS → LRT Jun 22, 05:20 UTCJun 22, 06:35 UTC1h 15m
2026-06-19 RIV155 LRT → TLS Jun 19, 17:24 UTCJun 19, 18:39 UTC1h 15m
2026-06-19 RIV154 TLS → LRT Jun 19, 15:19 UTCJun 19, 16:34 UTC1h 15m
2026-06-18 RIV155 LRT → TLS Jun 18, 17:25 UTCJun 18, 18:45 UTC1h 20m
2026-06-18 RIV154 TLS → LRT Jun 18, 15:20 UTCJun 18, 16:35 UTC1h 15m
2026-06-17 RIV153 - Jun 17, 07:35 UTCJun 17, 08:50 UTC1h 15m
2026-06-17 RIV152 - Jun 17, 05:10 UTCJun 17, 06:30 UTC1h 20m
2026-06-16 RIV153 LRT → TLS Jun 16, 07:20 UTCJun 16, 08:35 UTC1h 15m
2026-06-16 RIV152 TLS → LRT Jun 16, 05:15 UTCJun 16, 06:35 UTC1h 20m
2026-06-15 RIV153 LRT → TLS Jun 15, 07:10 UTCJun 15, 08:25 UTC1h 15m
2026-06-15 RIV152 TLS → LRT Jun 15, 05:15 UTCJun 15, 06:30 UTC1h 15m
2026-06-12 RIV155 LRT → TLS Jun 12, 17:25 UTCJun 12, 18:40 UTC1h 15m
2026-06-12 RIV154 TLS → LRT Jun 12, 15:25 UTCJun 12, 16:45 UTC1h 20m
2026-06-11 RIV155 LRT → TLS Jun 11, 17:35 UTCJun 11, 18:50 UTC1h 15m
2026-06-11 RIV154 TLS → LRT Jun 11, 15:35 UTCJun 11, 16:55 UTC1h 20m
2026-06-10 RIV153 LRT → TLS Jun 10, 07:25 UTCJun 10, 08:35 UTC1h 10m
2026-06-10 RIV152 TLS → LRT Jun 10, 05:15 UTCJun 10, 06:40 UTC1h 25m
2026-06-09 RIV153 LRT → TLS Jun 9, 07:20 UTCJun 9, 08:40 UTC1h 20m
2026-06-09 RIV152 TLS → LRT Jun 9, 05:15 UTCJun 9, 06:40 UTC1h 25m
2026-06-08 RIV153 LRT → TLS Jun 8, 07:25 UTCJun 8, 08:40 UTC1h 15m
2026-06-08 RIV152 TLS → LRT Jun 8, 05:20 UTCJun 8, 06:35 UTC1h 15m
2026-06-05 RIV155 LRT → TLS Jun 5, 17:20 UTCJun 5, 18:40 UTC1h 20m
2026-06-05 RIV154 TLS → LRT Jun 5, 15:15 UTCJun 5, 16:35 UTC1h 20m
2026-06-04 RIV155 LRT → TLS Jun 4, 17:25 UTCJun 4, 18:40 UTC1h 15m
2026-06-04 RIV154 TLS → LRT Jun 4, 15:15 UTCJun 4, 16:40 UTC1h 25m
2026-06-03 RIV153 LRT → TLS Jun 3, 07:20 UTCJun 3, 08:30 UTC1h 10m
2026-06-03 RIV152 TLS → LRT Jun 3, 05:15 UTCJun 3, 06:40 UTC1h 25m
2026-06-02 RIV153 LRT → TLS Jun 2, 07:35 UTCJun 2, 08:50 UTC1h 15m
2026-06-02 RIV152 TLS → LRT Jun 2, 05:15 UTCJun 2, 06:40 UTC1h 25m
2026-05-29 RIV155 LRT → TLS May 29, 17:25 UTCMay 29, 18:45 UTC1h 20m
2026-05-29 RIV154 - May 29, 15:20 UTCMay 29, 16:40 UTC1h 20m
2026-05-28 RIV155 LRT → TLS May 28, 17:25 UTCMay 28, 18:55 UTC1h 30m

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

Mode-S 3994CF frequently asked

What is Mode-S code 3994CF?
3994CF is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HFGP.
Where is Mode-S 3994CF registered?
Mode-S code 3994CF is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3994CF broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3994CF, octal 16312317, decimal 3,773,647.
What flights does 3994CF operate?
Mode-S 3994CF has broadcast 4 distinct callsigns, including RIV153, RIV152, RIV155, RIV154.