sensors Mode-S transponder

3965A4

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GZNE · BOEING 777-300ER

Hex
3965A4
Octal
16262644
Decimal
3,761,572
Country
FR
Tail
F-GZNE
Type
B77W
No current signal · last broadcast 2h ago
Flights observed
91
Distinct callsigns
20
Country
FR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 3965A4.

Country allocation

The ICAO 24-bit address 3965A4 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 20 distinct

Callsign Airline Flights Last seen
AFR274 Air France 10 2026-05-21
AFR24X Air France 8 2026-05-18
AFR50N Air France 7 2026-04-15
AFR091 Air France 7 2026-05-25
AFR51N Air France 6 2026-04-16
AFR025 Air France 6 2026-05-19
AFR23G Air France 5 2026-05-23
AFR22J Air France 5 2026-05-23
AFR090 Air France 5 2026-05-24
AFR279 Air France 4 2026-05-22
AFR256 Air France 4 2026-05-28
AFR004 - 4 2026-05-29
AFR8U Air France 3 2026-05-15
AFR293 Air France 3 2026-05-20
AFR257 Air France 3 2026-05-28
AFR007 - 3 2026-05-16
AFR003 - 3 2026-05-14
AFR3T Air France 1 2026-05-29
AFR2N Air France 1 2026-04-19
AFR1U Air France 1 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFR3T JFK → CDG May 29, 22:05 UTCMay 30, 04:40 UTC6h 35m
2026-05-29 AFR004 - May 29, 09:05 UTCMay 29, 16:15 UTC7h 10m
2026-05-28 AFR257 SIN → CDG May 28, 16:20 UTCMay 29, 05:45 UTC13h 25m
2026-05-28 AFR256 CDG → SIN May 28, 08:50 UTCMay 28, 13:50 UTC5h 0m
2026-05-27 AFR256 CDG → SIN May 27, 22:50 UTCMay 28, 06:55 UTC8h 5m
2026-05-26 AFR021 LAX → CDG May 26, 21:25 UTCMay 27, 07:35 UTC10h 10m
2026-05-26 AFR020 CDG → LAX May 26, 07:34 UTCMay 26, 18:45 UTC11h 10m
2026-05-25 AFR091 MIA → CDG May 25, 02:05 UTCMay 25, 09:00 UTC6h 55m
2026-05-24 AFR090 CDG → MIA May 24, 12:35 UTCMay 24, 21:40 UTC9h 5m
2026-05-23 AFR23G LAX → CDG May 23, 22:50 UTCMay 24, 09:05 UTC10h 15m
2026-05-23 AFR22J CDG → LAX May 23, 09:00 UTCMay 23, 20:00 UTC11h 0m
2026-05-22 AFR279 HND → CDG May 22, 13:35 UTCMay 23, 03:35 UTC13h 59m
2026-05-21 AFR274 CDG → HND May 21, 21:25 UTCMay 22, 10:30 UTC13h 5m
2026-05-20 AFR293 HND → CDG May 20, 15:35 UTCMay 21, 05:40 UTC14h 5m
2026-05-19 AFR274 CDG → HND May 19, 21:25 UTCMay 20, 10:25 UTC13h 1m
2026-05-19 AFR025 LAX → CDG May 19, 01:40 UTCMay 19, 11:30 UTC9h 50m
2026-05-18 AFR24X CDG → LAX May 18, 11:55 UTCMay 18, 23:00 UTC11h 4m
2026-05-17 AFR279 HND → CDG May 17, 13:31 UTCMay 18, 03:45 UTC14h 15m
2026-05-16 AFR274 CDG → HND May 16, 21:20 UTCMay 17, 10:40 UTC13h 20m
2026-05-16 AFR007 JFK → CDG May 16, 01:50 UTCMay 16, 08:20 UTC6h 31m
2026-05-15 AFR8U CDG → JFK May 15, 15:25 UTCMay 15, 23:00 UTC7h 35m
2026-05-14 AFR003 JFK → CDG May 14, 22:20 UTCMay 15, 04:40 UTC6h 20m
2026-05-14 AFR004 - May 14, 09:30 UTCMay 14, 17:05 UTC7h 35m
2026-05-13 AFR293 HND → CDG May 13, 15:30 UTCMay 14, 05:30 UTC14h 0m
2026-05-12 AFR274 CDG → HND May 12, 21:25 UTCMay 13, 10:25 UTC13h 0m
2026-05-12 AFR23G LAX → CDG May 12, 06:50 UTCMay 12, 08:30 UTC1h 40m
2026-05-11 AFR22J CDG → LAX May 11, 08:40 UTCMay 11, 19:55 UTC11h 15m
2026-05-10 AFR003 - May 10, 22:09 UTCMay 11, 04:40 UTC6h 30m
2026-05-10 AFR004 - May 10, 09:05 UTCMay 10, 16:25 UTC7h 20m
2026-05-09 AFR293 HND → CDG May 9, 15:35 UTCMay 10, 05:10 UTC13h 35m
2026-05-08 AFR274 CDG → HND May 8, 21:35 UTCMay 9, 10:35 UTC13h 0m
2026-05-08 AFR025 LAX → CDG May 8, 02:35 UTCMay 8, 12:55 UTC10h 20m
2026-05-07 AFR24X CDG → LAX May 7, 13:40 UTCMay 8, 00:09 UTC10h 29m
2026-05-06 AFR23G LAX → CDG May 6, 22:45 UTCMay 7, 09:05 UTC10h 20m
2026-05-06 AFR22J CDG → LAX May 6, 09:05 UTCMay 6, 19:30 UTC10h 24m
2026-05-05 AFR003 JFK → CDG May 5, 22:30 UTCMay 6, 05:05 UTC6h 35m
2026-05-05 AFR004 - May 5, 09:10 UTCMay 5, 16:30 UTC7h 20m
2026-05-03 AFR257 SIN → CDG May 3, 15:00 UTCMay 4, 03:40 UTC12h 40m
2026-05-02 AFR256 CDG → SIN May 2, 21:30 UTCMay 3, 10:00 UTC12h 29m
2026-05-02 AFR091 MIA → CDG May 2, 00:35 UTCMay 2, 09:05 UTC8h 30m
2026-05-01 AFR090 CDG → MIA May 1, 12:30 UTCMay 1, 21:45 UTC9h 15m
2026-04-30 AFR23G LAX → CDG Apr 30, 22:25 UTCMay 1, 08:50 UTC10h 25m
2026-04-30 AFR22J CDG → LAX Apr 30, 09:05 UTCApr 30, 19:45 UTC10h 40m
2026-04-29 AFR257 SIN → CDG Apr 29, 14:55 UTCApr 30, 04:05 UTC13h 9m
2026-04-28 AFR256 CDG → SIN Apr 28, 21:45 UTCApr 29, 10:00 UTC12h 16m
2026-04-28 AFR025 LAX → CDG Apr 28, 03:25 UTCApr 28, 13:30 UTC10h 5m
2026-04-27 AFR24X CDG → LAX Apr 27, 13:55 UTCApr 28, 01:00 UTC11h 5m
2026-04-26 AFR279 HND → CDG Apr 26, 14:35 UTCApr 27, 04:25 UTC13h 50m
2026-04-25 AFR274 CDG → HND Apr 25, 21:45 UTCApr 26, 10:20 UTC12h 35m
2026-04-25 AFR007 - Apr 25, 02:20 UTCApr 25, 09:10 UTC6h 50m

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

Mode-S 3965A4 frequently asked

What is Mode-S code 3965A4?
3965A4 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GZNE.
Where is Mode-S 3965A4 registered?
Mode-S code 3965A4 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3965A4 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3965A4, octal 16262644, decimal 3,761,572.
What flights does 3965A4 operate?
Mode-S 3965A4 has broadcast 20 distinct callsigns, including AFR274, AFR24X, AFR50N, AFR091, AFR51N.