Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 3d ago
Flights observed
114
Distinct callsigns
20
Country
FR
Last broadcast
3d 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 - 25 2026-07-04
AFR848 - 10 2026-07-13
AFR194 - 10 2026-06-19
AFR191 - 10 2026-06-19
AFR498 - 9 2026-07-01
AFR860 Air France 7 2026-07-20
AFR832 - 7 2026-07-17
AFR947 Air France 5 2026-07-19
AFR863 - 5 2026-07-14
AFR940 - 4 2026-07-15
AFR946 - 2 2026-07-12
AFR933 - 2 2026-06-30
AFR930 - 2 2026-06-29
AFR63J - 2 2026-07-07
AFR149 Air France 2 2026-05-28
AFR062 - 2 2026-07-07
AFR598 Air France 1 2026-05-09
AFR594 Air France 1 2026-05-22
AFR389 - 1 2026-04-30
AFR382V - 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 AFR860 CDG → LFW Jul 20, 14:25 UTCJul 21, 07:35 UTC17h 9m
2026-07-19 AFR947 DLA → CDG Jul 19, 11:25 UTCJul 20, 03:25 UTC16h 0m
2026-07-18 AFR947 DLA → CDG Jul 18, 11:00 UTCJul 19, 03:15 UTC16h 15m
2026-07-17 AFR832 - Jul 17, 12:10 UTCJul 18, 05:05 UTC16h 56m
2026-07-16 AFR19LP ATH → CDG Jul 16, 16:49 UTCJul 16, 20:00 UTC3h 10m
2026-07-16 AFR15FE - Jul 16, 12:44 UTCJul 16, 15:19 UTC2h 35m
2026-07-15 AFR940 - Jul 15, 11:20 UTCJul 16, 05:30 UTC18h 10m
2026-07-15 AFR940 - Jul 15, 09:10 UTCJul 16, 05:30 UTC20h 20m
2026-07-14 AFR863 - Jul 14, 14:45 UTCJul 15, 04:35 UTC13h 49m
2026-07-13 AFR848 - Jul 13, 11:20 UTCJul 14, 05:50 UTC18h 30m
2026-07-12 AFR946 - Jul 12, 11:15 UTCJul 13, 03:40 UTC16h 25m
2026-07-11 AFR860 - Jul 11, 14:40 UTCJul 12, 05:10 UTC14h 30m
2026-07-10 AFR940 - Jul 10, 11:05 UTCJul 11, 06:15 UTC19h 10m
2026-07-10 AFR940 - Jul 10, 09:55 UTCJul 11, 06:15 UTC20h 20m
2026-07-08 AFR848 - Jul 8, 11:45 UTCJul 9, 06:00 UTC18h 15m
2026-07-07 AFR63J EWR → CDG Jul 7, 21:45 UTCJul 8, 04:30 UTC6h 45m
2026-07-07 AFR062 - Jul 7, 11:35 UTCJul 7, 19:00 UTC7h 25m
2026-07-06 AFR863 - Jul 6, 14:00 UTCJul 7, 04:55 UTC14h 55m
2026-07-05 AFR832 - Jul 5, 12:45 UTCJul 6, 06:00 UTC17h 15m
2026-07-04 AFR499 - Jul 4, 09:40 UTCJul 5, 04:30 UTC18h 50m
2026-07-03 AFR499 - Jul 3, 11:30 UTCJul 4, 05:55 UTC18h 25m
2026-07-02 AFR863 - Jul 2, 14:15 UTCJul 3, 05:05 UTC14h 50m
2026-07-01 AFR498 - Jul 1, 11:05 UTCJul 2, 05:15 UTC18h 10m
2026-06-30 AFR933 - Jun 30, 21:45 UTCJul 1, 06:20 UTC8h 35m
2026-06-29 AFR930 - Jun 29, 20:44 UTCJun 29, 22:39 UTC1h 55m
2026-06-28 AFR499 - Jun 28, 11:45 UTCJun 29, 05:54 UTC18h 10m
2026-06-27 AFR947 - Jun 27, 11:09 UTCJun 28, 03:35 UTC16h 25m
2026-06-26 AFR832 - Jun 26, 12:34 UTCJun 27, 06:59 UTC18h 25m
2026-06-25 AFR933 - Jun 25, 21:40 UTCJun 26, 06:25 UTC8h 45m
2026-06-25 AFR930 - Jun 25, 00:24 UTCJun 25, 08:30 UTC8h 5m
2026-06-24 AFR382V - Jun 24, 18:20 UTCJun 24, 20:54 UTC2h 35m
2026-06-23 AFR860 CDG → LFW Jun 23, 14:29 UTCJun 23, 17:09 UTC2h 40m
2026-06-21 AFR832 - Jun 21, 11:59 UTCJun 22, 05:24 UTC17h 25m
2026-06-20 AFR860 CDG → LFW Jun 20, 15:04 UTCJun 21, 06:50 UTC15h 45m
2026-06-19 AFR191 - Jun 19, 20:29 UTCJun 20, 06:14 UTC9h 45m
2026-06-19 AFR194 - Jun 19, 18:25 UTCJun 19, 18:34 UTC10m
2026-06-19 AFR194 - Jun 19, 09:09 UTCJun 19, 16:44 UTC7h 35m
2026-06-18 AFR860 CDG → LFW Jun 18, 14:25 UTCJun 19, 05:14 UTC14h 49m
2026-06-17 AFR191 - Jun 17, 20:00 UTCJun 18, 06:20 UTC10h 20m
2026-06-17 AFR194 - Jun 17, 08:20 UTCJun 17, 12:40 UTC4h 20m
2026-06-16 AFR863 - Jun 16, 14:20 UTCJun 17, 05:10 UTC14h 51m
2026-06-15 AFR498 - Jun 15, 11:05 UTCJun 16, 05:10 UTC18h 5m
2026-06-15 AFR498 - Jun 15, 10:55 UTCJun 16, 05:10 UTC18h 15m
2026-06-14 AFR832 - Jun 14, 12:30 UTCJun 15, 05:50 UTC17h 20m
2026-06-13 AFR947 - Jun 13, 10:45 UTCJun 14, 04:10 UTC17h 25m
2026-06-12 AFR191 - Jun 12, 21:10 UTCJun 13, 06:30 UTC9h 19m
2026-06-12 AFR191 - Jun 12, 20:00 UTCJun 12, 20:25 UTC25m
2026-06-12 AFR194 - Jun 12, 08:20 UTCJun 12, 17:40 UTC9h 20m
2026-06-10 AFR191 BLR → CDG Jun 10, 21:20 UTCJun 11, 06:30 UTC9h 10m
2026-06-10 AFR191 BLR → CDG Jun 10, 20:10 UTCJun 10, 20:35 UTC25m

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 3d 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, AFR194, AFR191, AFR498.