sensors Mode-S transponder
39644A
ICAO 24-bit transponder address · allocated to France
Currently assigned to F-GZCK · AIRBUS A-330-200
- Hex
- 39644A
- Octal
- 16262112
- Decimal
- 3,761,226
- Country
- FR
- Tail
- F-GZCK
- Type
- A332
- Flights observed
- 48
- Distinct callsigns
- 20
- Country
- FR
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 39644A 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 |
|---|---|---|---|
| AFR848 | Air France | 9 | 2026-05-22 |
| AFR499 | Air France | 9 | 2026-05-19 |
| AFR947 | Air France | 4 | 2026-05-26 |
| AFR946 | Air France | 2 | 2026-05-07 |
| AFR863 | Air France | 2 | 2026-05-23 |
| AFR860 | Air France | 2 | 2026-05-02 |
| AFR832 | Air France | 2 | 2026-05-01 |
| AFR389 | - | 2 | 2026-04-17 |
| AFR374V | Air France | 2 | 2026-04-13 |
| AFR194 | Air France | 2 | 2026-05-09 |
| AFR191 | Air France | 2 | 2026-05-09 |
| AFR926 | Air France | 1 | 2026-04-28 |
| AFR923 | Air France | 1 | 2026-04-29 |
| AFR63J | Air France | 1 | 2026-05-17 |
| AFR579 | Air France | 1 | 2026-05-04 |
| AFR578 | Air France | 1 | 2026-05-03 |
| AFR498 | Air France | 1 | 2026-05-21 |
| AFR388 | Air France | 1 | 2026-04-16 |
| AFR380V | Air France | 1 | 2026-05-05 |
| AFR373V | - | 1 | 2026-04-15 |
Recent flights last 48
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-26 | AFR947 | DLA → CDG | May 26, 11:15 UTC | May 27, 04:09 UTC | 16h 55m |
| 2026-05-23 | AFR863 | LFW → CDG | May 23, 14:25 UTC | May 24, 05:15 UTC | 14h 51m |
| 2026-05-22 | AFR848 | DLA → CDG | May 22, 11:35 UTC | May 23, 05:35 UTC | 18h 0m |
| 2026-05-21 | AFR498 | CDG → SXM | May 21, 08:35 UTC | May 22, 03:55 UTC | 19h 20m |
| 2026-05-19 | AFR499 | SXM → CDG | May 19, 08:40 UTC | May 20, 03:35 UTC | 18h 55m |
| 2026-05-18 | AFR499 | SXM → CDG | May 18, 08:45 UTC | May 19, 03:40 UTC | 18h 54m |
| 2026-05-17 | AFR63J | EWR → CDG | May 17, 22:30 UTC | May 18, 05:10 UTC | 6h 40m |
| 2026-05-17 | AFR062 | CDG → EWR | May 17, 10:45 UTC | May 17, 18:35 UTC | 7h 50m |
| 2026-05-14 | AFR499 | SXM → CDG | May 14, 05:05 UTC | May 14, 06:35 UTC | 1h 30m |
| 2026-05-13 | AFR499 | SXM → CDG | May 13, 08:35 UTC | May 14, 06:35 UTC | 22h 0m |
| 2026-05-12 | AFR863 | LFW → CDG | May 12, 14:05 UTC | May 13, 05:20 UTC | 15h 15m |
| 2026-05-11 | AFR848 | DLA → CDG | May 11, 10:35 UTC | May 12, 05:55 UTC | 19h 20m |
| 2026-05-10 | AFR499 | SXM → CDG | May 10, 10:05 UTC | May 11, 04:00 UTC | 17h 55m |
| 2026-05-09 | AFR191 | BLR → CDG | May 9, 21:40 UTC | May 10, 07:04 UTC | 9h 25m |
| 2026-05-09 | AFR191 | BLR → CDG | May 9, 20:20 UTC | May 9, 20:30 UTC | 10m |
| 2026-05-09 | AFR194 | CDG → BLR | May 9, 17:45 UTC | May 9, 18:05 UTC | 20m |
| 2026-05-09 | AFR194 | CDG → BLR | May 9, 08:30 UTC | May 9, 16:10 UTC | 7h 40m |
| 2026-05-08 | AFR947 | DLA → CDG | May 8, 01:45 UTC | May 8, 04:04 UTC | 2h 20m |
| 2026-05-07 | AFR946 | CDG → DLA | May 7, 11:00 UTC | May 7, 17:50 UTC | 6h 50m |
| 2026-05-05 | AFR380V | SNN → CDG | May 5, 23:15 UTC | May 6, 01:55 UTC | 2h 40m |
| 2026-05-04 | AFR848 | DLA → CDG | May 4, 10:55 UTC | May 4, 12:40 UTC | 1h 45m |
| 2026-05-04 | AFR579 | CKY → CDG | May 4, 00:30 UTC | May 4, 05:40 UTC | 5h 10m |
| 2026-05-03 | AFR578 | CDG → CKY | May 3, 15:50 UTC | May 3, 21:35 UTC | 5h 45m |
| 2026-05-02 | AFR860 | CDG → LFW | May 2, 14:25 UTC | May 3, 06:30 UTC | 16h 5m |
| 2026-05-01 | AFR832 | CDG → PNR | May 1, 12:10 UTC | May 2, 05:40 UTC | 17h 30m |
| 2026-04-29 | AFR923 | LBV → CDG | Apr 29, 12:40 UTC | Apr 29, 15:00 UTC | 2h 20m |
| 2026-04-28 | AFR926 | CDG → LBV | Apr 28, 09:15 UTC | Apr 28, 11:05 UTC | 1h 50m |
| 2026-04-27 | AFR860 | CDG → LFW | Apr 27, 14:10 UTC | Apr 28, 05:05 UTC | 14h 55m |
| 2026-04-26 | AFR499 | SXM → CDG | Apr 26, 08:45 UTC | Apr 27, 03:50 UTC | 19h 5m |
| 2026-04-25 | AFR946 | CDG → DLA | Apr 25, 10:40 UTC | Apr 26, 05:20 UTC | 18h 40m |
| 2026-04-24 | AFR832 | CDG → PNR | Apr 24, 12:00 UTC | Apr 25, 05:50 UTC | 17h 50m |
| 2026-04-23 | AFR947 | DLA → CDG | Apr 23, 11:20 UTC | Apr 24, 04:30 UTC | 17h 9m |
| 2026-04-22 | AFR848 | DLA → CDG | Apr 22, 10:45 UTC | Apr 23, 06:15 UTC | 19h 30m |
| 2026-04-20 | AFR499 | SXM → CDG | Apr 20, 08:45 UTC | Apr 21, 03:50 UTC | 19h 5m |
| 2026-04-19 | AFR947 | DLA → CDG | Apr 19, 11:00 UTC | Apr 20, 04:35 UTC | 17h 35m |
| 2026-04-18 | AFR499 | SXM → CDG | Apr 18, 09:10 UTC | Apr 19, 04:05 UTC | 18h 55m |
| 2026-04-18 | AFR848 | DLA → CDG | Apr 18, 05:25 UTC | Apr 18, 05:55 UTC | 30m |
| 2026-04-18 | AFR848 | DLA → CDG | Apr 18, 04:45 UTC | Apr 18, 05:55 UTC | 1h 10m |
| 2026-04-18 | AFR848 | DLA → CDG | Apr 18, 03:25 UTC | Apr 18, 05:20 UTC | 1h 55m |
| 2026-04-17 | AFR848 | DLA → CDG | Apr 17, 11:20 UTC | Apr 17, 13:15 UTC | 1h 55m |
| 2026-04-17 | AFR848 | DLA → CDG | Apr 17, 10:45 UTC | Apr 17, 11:15 UTC | 30m |
| 2026-04-17 | AFR389 | - | Apr 17, 05:20 UTC | Apr 17, 05:40 UTC | 20m |
| 2026-04-17 | AFR389 | - | Apr 17, 04:20 UTC | Apr 17, 05:15 UTC | 56m |
| 2026-04-16 | AFR388 | CMN → LIG | Apr 16, 11:09 UTC | Apr 16, 12:05 UTC | 55m |
| 2026-04-15 | AFR373V | - | Apr 15, 20:35 UTC | Apr 15, 21:00 UTC | 25m |
| 2026-04-13 | AFR374V | PAE → CDG | Apr 13, 07:55 UTC | Apr 13, 08:10 UTC | 15m |
| 2026-04-13 | AFR374V | PAE → CDG | Apr 13, 07:25 UTC | Apr 13, 08:10 UTC | 45m |
| 2026-04-13 | AFR499 | - | Apr 13, 02:30 UTC | Apr 13, 03:35 UTC | 1h 5m |
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-GZCK page for operator, model, and routing details .