Apparatus

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sensors Mode-S transponder

3965AA

ICAO 24-bit transponder address · allocated to France

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

Hex
3965AA
Octal
16262652
Decimal
3,761,578
Country
FR
Tail
F-GZNK
Type
B77W
No current signal · last broadcast 3h ago
Flights observed
141
Distinct callsigns
20
Country
FR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3965AA.

Country allocation

The ICAO 24-bit address 3965AA 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
AFR257 Air France 11 2026-06-16
AFR256 Air France 10 2026-06-15
AFR090 - 8 2026-07-10
AFR8F - 7 2026-07-03
AFR5U - 7 2026-07-12
AFR091 - 7 2026-07-11
AFR021 - 7 2026-07-09
AFR020 - 7 2026-07-09
AFR007 - 7 2026-07-04
AFR006 - 7 2026-07-12
AFR274 - 6 2026-07-15
AFR010 - 6 2026-06-24
AFR004 - 6 2026-07-17
AFR009 - 5 2026-06-25
AFR003 - 5 2026-05-17
AFR279 - 4 2026-07-16
AFR23G - 4 2026-06-29
AFR22J Air France 4 2026-06-29
AFR703 - 3 2026-07-04
AFR293 Air France 2 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 AFR3T JFK → CDG Jul 17, 21:50 UTCJul 17, 23:25 UTC1h 35m
2026-07-17 AFR004 - Jul 17, 09:04 UTCJul 17, 16:04 UTC7h 0m
2026-07-16 AFR279 - Jul 16, 13:20 UTCJul 17, 04:39 UTC15h 20m
2026-07-15 AFR274 - Jul 15, 22:05 UTCJul 16, 10:25 UTC12h 20m
2026-07-15 AFR4083 - Jul 15, 01:50 UTCJul 15, 11:35 UTC9h 45m
2026-07-14 - - Jul 14, 08:05 UTCJul 14, 08:10 UTC5m
2026-07-13 AFR83K SFO → SFO Jul 13, 23:15 UTCJul 14, 05:35 UTC6h 20m
2026-07-13 AFR84E - Jul 13, 09:20 UTCJul 13, 20:20 UTC11h 0m
2026-07-12 AFR5U - Jul 12, 23:15 UTCJul 13, 05:50 UTC6h 35m
2026-07-12 AFR006 - Jul 12, 12:10 UTCJul 12, 19:25 UTC7h 15m
2026-07-12 AFR5U JFK → CDG Jul 12, 00:10 UTCJul 12, 06:35 UTC6h 25m
2026-07-11 AFR006 - Jul 11, 12:30 UTCJul 11, 19:55 UTC7h 25m
2026-07-11 AFR091 - Jul 11, 00:45 UTCJul 11, 08:55 UTC8h 10m
2026-07-10 AFR090 - Jul 10, 20:50 UTCJul 10, 21:25 UTC35m
2026-07-10 AFR090 - Jul 10, 12:30 UTCJul 10, 13:45 UTC1h 15m
2026-07-09 AFR021 - Jul 9, 21:20 UTCJul 10, 07:35 UTC10h 15m
2026-07-09 AFR020 - Jul 9, 08:10 UTCJul 9, 19:05 UTC10h 55m
2026-07-08 AFR279 HND → CDG Jul 8, 13:30 UTCJul 9, 03:55 UTC14h 25m
2026-07-07 AFR274 CDG → HND Jul 7, 21:15 UTCJul 8, 10:00 UTC12h 45m
2026-07-07 AFR025 - Jul 7, 01:40 UTCJul 7, 11:55 UTC10h 15m
2026-07-06 AFR24X CDG → LAX Jul 6, 12:00 UTCJul 6, 23:05 UTC11h 5m
2026-07-05 AFR021 - Jul 5, 21:35 UTCJul 6, 07:50 UTC10h 15m
2026-07-05 AFR020 - Jul 5, 07:40 UTCJul 5, 18:40 UTC11h 0m
2026-07-04 AFR703 - Jul 4, 12:45 UTCJul 5, 03:55 UTC15h 10m
2026-07-04 AFR007 - Jul 4, 02:20 UTCJul 4, 08:45 UTC6h 25m
2026-07-03 AFR8F - Jul 3, 15:05 UTCJul 3, 22:35 UTC7h 30m
2026-07-03 AFR33J - Jul 3, 00:25 UTCJul 3, 08:25 UTC8h 0m
2026-07-02 AFR32J CDG → ATL Jul 2, 12:35 UTCJul 2, 21:20 UTC8h 45m
2026-06-30 AFR703 - Jun 30, 12:45 UTCJul 1, 03:35 UTC14h 50m
2026-06-29 AFR23G - Jun 29, 22:44 UTCJun 30, 08:20 UTC9h 36m
2026-06-29 AFR22J CDG → LAX Jun 29, 09:34 UTCJun 29, 20:24 UTC10h 50m
2026-06-28 AFR719 - Jun 28, 23:25 UTCJun 29, 04:20 UTC4h 55m
2026-06-28 AFR718 CDG → DSS Jun 28, 15:34 UTCJun 28, 20:54 UTC5h 20m
2026-06-27 AFR021 LAX → CDG Jun 27, 21:19 UTCJun 28, 07:25 UTC10h 5m
2026-06-27 AFR020 CDG → LAX Jun 27, 07:55 UTCJun 27, 19:00 UTC11h 5m
2026-06-26 AFR279 HND → CDG Jun 26, 13:15 UTCJun 27, 03:40 UTC14h 25m
2026-06-25 AFR274 CDG → HND Jun 25, 21:25 UTCJun 26, 10:39 UTC13h 15m
2026-06-25 AFR009 - Jun 25, 04:14 UTCJun 25, 10:30 UTC6h 15m
2026-06-24 AFR010 - Jun 24, 23:34 UTCJun 25, 01:04 UTC1h 30m
2026-06-24 AFR010 - Jun 24, 17:25 UTCJun 24, 23:29 UTC6h 5m
2026-06-23 AFR703 - Jun 23, 12:29 UTCJun 24, 03:35 UTC15h 5m
2026-06-23 AFR007 JFK → CDG Jun 23, 02:15 UTCJun 23, 08:35 UTC6h 20m
2026-06-22 AFR8F - Jun 22, 15:14 UTCJun 22, 22:40 UTC7h 25m
2026-06-22 AFR009 - Jun 22, 04:04 UTCJun 22, 10:25 UTC6h 20m
2026-06-21 AFR010 - Jun 21, 16:49 UTCJun 21, 23:59 UTC7h 10m
2026-06-21 AFR007 JFK → CDG Jun 21, 03:40 UTCJun 21, 09:49 UTC6h 10m
2026-06-20 AFR8F - Jun 20, 14:54 UTCJun 20, 22:20 UTC7h 25m
2026-06-20 AFR009 JFK → CDG Jun 20, 03:44 UTCJun 20, 10:09 UTC6h 25m
2026-06-19 AFR010 - Jun 19, 16:49 UTCJun 20, 00:29 UTC7h 40m
2026-06-19 AFR025 - Jun 19, 01:39 UTCJun 19, 11:54 UTC10h 15m

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

Mode-S 3965AA frequently asked

What is Mode-S code 3965AA?
3965AA is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GZNK.
Where is Mode-S 3965AA registered?
Mode-S code 3965AA is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3965AA broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3965AA, octal 16262652, decimal 3,761,578.
What flights does 3965AA operate?
Mode-S 3965AA has broadcast 20 distinct callsigns, including AFR257, AFR256, AFR090, AFR8F, AFR5U.