Apparatus

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sensors Mode-S transponder

39644C

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GZCM · AIRBUS A-330-200

Hex
39644C
Octal
16262114
Decimal
3,761,228
Country
FR
Tail
F-GZCM
Type
A332
No current signal · last broadcast 12h ago
Flights observed
62
Distinct callsigns
20
Country
FR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 39644C.

Country allocation

The ICAO 24-bit address 39644C 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
AFR499 Air France 21 2026-06-08
AFR848 Air France 8 2026-06-05
AFR498 Air France 7 2026-06-09
AFR194 Air France 4 2026-06-02
AFR191 Air France 4 2026-06-02
AFR860 Air France 2 2026-05-16
AFR832 Air France 2 2026-05-29
AFR149 Air France 2 2026-05-28
AFR947 Air France 1 2026-05-18
AFR946 Air France 1 2026-05-17
AFR863 Air France 1 2026-05-19
AFR63J Air France 1 2026-05-23
AFR598 Air France 1 2026-05-09
AFR594 Air France 1 2026-05-22
AFR389 - 1 2026-04-30
AFR374V Air France 1 2026-05-25
AFR373V Air France 1 2026-05-27
AFR11E Air France 1 2026-04-22
AFR062 Air France 1 2026-05-23
AFR012 Air France 1 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-09 AFR498 CDG → SXM Jun 9, 09:20 UTCJun 9, 10:25 UTC1h 5m
2026-06-08 AFR499 SXM → CDG Jun 8, 09:10 UTCJun 9, 04:00 UTC18h 50m
2026-06-07 AFR498 CDG → SXM Jun 7, 09:30 UTCJun 8, 03:55 UTC18h 25m
2026-06-06 AFR498 CDG → SXM Jun 6, 09:04 UTCJun 7, 03:35 UTC18h 30m
2026-06-06 AFR498 CDG → SXM Jun 6, 08:55 UTCJun 7, 03:35 UTC18h 40m
2026-06-05 AFR848 DLA → CDG Jun 5, 11:05 UTCJun 6, 05:45 UTC18h 40m
2026-06-05 AFR848 DLA → CDG Jun 5, 10:55 UTCJun 6, 05:45 UTC18h 50m
2026-06-03 AFR848 DLA → CDG Jun 3, 11:55 UTCJun 4, 06:45 UTC18h 50m
2026-06-02 AFR191 BLR → CDG Jun 2, 21:20 UTCJun 3, 06:40 UTC9h 20m
2026-06-02 AFR191 BLR → CDG Jun 2, 20:15 UTCJun 2, 20:35 UTC20m
2026-06-02 AFR194 CDG → BLR Jun 2, 17:45 UTCJun 2, 18:00 UTC15m
2026-06-02 AFR194 CDG → BLR Jun 2, 08:35 UTCJun 2, 16:05 UTC7h 30m
2026-05-31 AFR191 BLR → CDG May 31, 22:50 UTCJun 1, 08:10 UTC9h 20m
2026-05-31 AFR191 BLR → CDG May 31, 21:40 UTCMay 31, 22:05 UTC25m
2026-05-31 AFR194 CDG → BLR May 31, 17:30 UTCMay 31, 18:00 UTC30m
2026-05-31 AFR194 CDG → BLR May 31, 08:30 UTCMay 31, 15:50 UTC7h 20m
2026-05-29 AFR832 CDG → PNR May 29, 12:10 UTCMay 30, 06:55 UTC18h 45m
2026-05-28 AFR149 LOS → CDG May 28, 14:20 UTCMay 29, 05:45 UTC15h 25m
2026-05-27 AFR373V PAE → CDG May 27, 15:50 UTCMay 27, 16:40 UTC50m
2026-05-25 AFR374V PAE → CDG May 25, 08:15 UTCMay 25, 09:00 UTC45m
2026-05-24 AFR498 CDG → SXM May 24, 09:45 UTCMay 25, 04:20 UTC18h 35m
2026-05-23 AFR63J EWR → CDG May 23, 21:40 UTCMay 24, 04:15 UTC6h 35m
2026-05-23 AFR062 CDG → EWR May 23, 11:05 UTCMay 23, 18:55 UTC7h 50m
2026-05-22 AFR594 CKY → CDG May 22, 17:40 UTCMay 23, 05:00 UTC11h 19m
2026-05-20 AFR149 LOS → CDG May 20, 14:20 UTCMay 21, 06:00 UTC15h 40m
2026-05-19 AFR863 LFW → CDG May 19, 14:45 UTCMay 20, 05:30 UTC14h 46m
2026-05-18 AFR848 DLA → CDG May 18, 11:05 UTCMay 19, 05:40 UTC18h 34m
2026-05-18 AFR947 DLA → CDG May 18, 02:45 UTCMay 18, 04:25 UTC1h 40m
2026-05-17 AFR946 CDG → DLA May 17, 11:50 UTCMay 17, 18:30 UTC6h 40m
2026-05-16 AFR860 CDG → LFW May 16, 14:46 UTCMay 17, 05:30 UTC14h 45m
2026-05-15 AFR499 SXM → CDG May 15, 09:05 UTCMay 16, 03:40 UTC18h 34m
2026-05-15 AFR498 CDG → SXM May 15, 08:50 UTCMay 16, 03:40 UTC18h 49m
2026-05-14 AFR499 SXM → CDG May 14, 09:05 UTCMay 15, 04:10 UTC19h 5m
2026-05-14 AFR499 SXM → CDG May 14, 08:50 UTCMay 15, 04:10 UTC19h 20m
2026-05-12 AFR498 CDG → SXM May 12, 08:50 UTCMay 12, 10:35 UTC1h 45m
2026-05-11 AFR499 SXM → CDG May 11, 09:05 UTCMay 12, 04:05 UTC19h 1m
2026-05-11 AFR499 SXM → CDG May 11, 08:50 UTCMay 12, 04:05 UTC19h 16m
2026-05-09 AFR598 NKC → CDG May 9, 14:50 UTCMay 10, 06:15 UTC15h 25m
2026-05-08 AFR499 SXM → CDG May 8, 09:04 UTCMay 9, 03:35 UTC18h 30m
2026-05-08 AFR499 SXM → CDG May 8, 08:59 UTCMay 9, 03:35 UTC18h 35m
2026-05-07 AFR499 SXM → CDG May 7, 09:05 UTCMay 8, 03:49 UTC18h 44m
2026-05-07 AFR499 SXM → CDG May 7, 08:45 UTCMay 8, 03:49 UTC19h 5m
2026-05-06 AFR848 DLA → CDG May 6, 11:05 UTCMay 7, 06:05 UTC18h 59m
2026-05-06 AFR848 DLA → CDG May 6, 10:55 UTCMay 7, 06:05 UTC19h 10m
2026-05-04 AFR499 SXM → CDG May 4, 09:05 UTCMay 5, 03:50 UTC18h 46m
2026-05-04 AFR499 SXM → CDG May 4, 08:40 UTCMay 5, 03:50 UTC19h 11m
2026-05-03 AFR499 SXM → CDG May 3, 09:05 UTCMay 4, 03:54 UTC18h 50m
2026-05-03 AFR499 SXM → CDG May 3, 08:55 UTCMay 4, 03:54 UTC19h 0m
2026-05-02 AFR499 SXM → CDG May 2, 09:05 UTCMay 3, 03:45 UTC18h 39m
2026-05-02 AFR499 SXM → CDG May 2, 08:30 UTCMay 3, 03:45 UTC19h 14m

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

Mode-S 39644C frequently asked

What is Mode-S code 39644C?
39644C is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GZCM.
Where is Mode-S 39644C registered?
Mode-S code 39644C is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39644C broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39644C, octal 16262114, decimal 3,761,228.
What flights does 39644C operate?
Mode-S 39644C has broadcast 20 distinct callsigns, including AFR499, AFR848, AFR498, AFR194, AFR191.