sensors Mode-S transponder
39CF0A
ICAO 24-bit transponder address · allocated to France
Currently assigned to F-HTYK · AIRBUS A-350-900
- Hex
- 39CF0A
- Octal
- 16347412
- Decimal
- 3,788,554
- Country
- FR
- Tail
- F-HTYK
- Type
- A359
- Flights observed
- 97
- Distinct callsigns
- 20
- Country
- FR
- Last broadcast
- 47m ago
Last known position
Country allocation
The ICAO 24-bit address 39CF0A 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 |
|---|---|---|---|
| AFR174 | Air France | 11 | 2026-05-25 |
| AFR173 | Air France | 10 | 2026-05-26 |
| AFR722 | Air France | 6 | 2026-05-15 |
| AFR407 | Air France | 6 | 2026-05-22 |
| AFR995 | Air France | 5 | 2026-04-28 |
| AFR375G | Air France | 5 | 2026-05-03 |
| AFR374F | Air France | 5 | 2026-05-03 |
| AFR990 | Air France | 4 | 2026-04-27 |
| AFR491 | Air France | 3 | 2026-05-20 |
| AFR436 | Air France | 3 | 2026-05-07 |
| AFR406 | Air France | 3 | 2026-05-21 |
| AFR871 | Air France | 2 | 2026-04-20 |
| AFR754 | Air France | 2 | 2026-05-09 |
| AFR579 | Air France | 2 | 2026-04-16 |
| AFR52X | Air France | 2 | 2026-05-24 |
| AFR435 | Air France | 2 | 2026-05-08 |
| AFR431 | Air France | 2 | 2026-05-23 |
| AFR199 | Air France | 2 | 2026-05-21 |
| AFR198 | Air France | 2 | 2026-05-20 |
| AFR191 | Air France | 2 | 2026-04-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | AFR258 | CDG → SGN | May 30, 12:40 UTC | May 30, 20:30 UTC | 7h 50m |
| 2026-05-28 | AFR029 | LAX → CDG | May 28, 04:20 UTC | May 28, 14:35 UTC | 10h 15m |
| 2026-05-27 | AFR029 | LAX → CDG | May 27, 18:00 UTC | May 28, 01:25 UTC | 7h 25m |
| 2026-05-27 | AFR028 | LAX → PPT | May 27, 07:45 UTC | May 27, 15:30 UTC | 7h 45m |
| 2026-05-26 | AFR028 | LAX → PPT | May 26, 17:50 UTC | May 27, 04:55 UTC | 11h 5m |
| 2026-05-26 | AFR173 | MEX → CDG | May 26, 04:35 UTC | May 26, 14:55 UTC | 10h 20m |
| 2026-05-25 | AFR174 | CDG → MEX | May 25, 14:30 UTC | May 26, 01:34 UTC | 11h 4m |
| 2026-05-25 | AFR53M | IAD → CDG | May 25, 02:00 UTC | May 25, 09:00 UTC | 7h 0m |
| 2026-05-24 | AFR52X | CDG → IAD | May 24, 23:00 UTC | May 24, 23:15 UTC | 15m |
| 2026-05-24 | AFR52X | CDG → IAD | May 24, 15:35 UTC | May 24, 21:45 UTC | 6h 10m |
| 2026-05-23 | AFR431 | SJO → CDG | May 23, 21:25 UTC | May 24, 11:15 UTC | 13h 50m |
| 2026-05-23 | AFR431 | SJO → CDG | May 23, 12:35 UTC | May 24, 11:15 UTC | 22h 40m |
| 2026-05-23 | AFR430 | CDG → SJO | May 23, 11:55 UTC | May 24, 10:30 UTC | 22h 35m |
| 2026-05-22 | AFR407 | SCL → CDG | May 22, 17:00 UTC | May 23, 04:00 UTC | 11h 0m |
| 2026-05-22 | AFR407 | SCL → CDG | May 22, 15:15 UTC | May 22, 15:25 UTC | 10m |
| 2026-05-21 | AFR406 | CDG → SCL | May 21, 22:15 UTC | May 22, 10:20 UTC | 12h 4m |
| 2026-05-21 | AFR199 | BKK → CDG | May 21, 06:00 UTC | May 21, 17:40 UTC | 11h 40m |
| 2026-05-20 | AFR198 | CDG → BKK | May 20, 16:15 UTC | May 21, 00:30 UTC | 8h 15m |
| 2026-05-20 | AFR491 | CDG → PUJ | May 20, 04:15 UTC | May 20, 12:40 UTC | 8h 26m |
| 2026-05-19 | AFR491 | CDG → PUJ | May 19, 14:35 UTC | May 20, 12:40 UTC | 22h 6m |
| 2026-05-19 | AFR491 | CDG → PUJ | May 19, 14:05 UTC | May 20, 12:30 UTC | 22h 26m |
| 2026-05-17 | AFR407 | SCL → CDG | May 17, 16:20 UTC | May 18, 03:25 UTC | 11h 5m |
| 2026-05-17 | AFR407 | SCL → CDG | May 17, 14:30 UTC | May 17, 14:40 UTC | 10m |
| 2026-05-16 | AFR406 | CDG → SCL | May 16, 21:35 UTC | May 16, 23:15 UTC | 1h 40m |
| 2026-05-15 | AFR722 | CDG → FIH | May 15, 10:35 UTC | May 16, 04:50 UTC | 18h 14m |
| 2026-05-15 | AFR722 | CDG → FIH | May 15, 09:00 UTC | May 16, 04:50 UTC | 19h 49m |
| 2026-05-10 | AFR722 | CDG → FIH | May 10, 10:35 UTC | May 11, 05:25 UTC | 18h 50m |
| 2026-05-10 | AFR722 | CDG → FIH | May 10, 09:55 UTC | May 11, 05:25 UTC | 19h 30m |
| 2026-05-09 | AFR754 | CDG → BZV | May 9, 10:35 UTC | May 10, 05:10 UTC | 18h 35m |
| 2026-05-09 | AFR754 | CDG → BZV | May 9, 09:15 UTC | May 10, 05:10 UTC | 19h 55m |
| 2026-05-08 | AFR594 | CKY → CDG | May 8, 16:35 UTC | May 9, 04:30 UTC | 11h 55m |
| 2026-05-08 | AFR435 | MEX → CDG | May 8, 11:55 UTC | May 8, 13:20 UTC | 1h 25m |
| 2026-05-07 | AFR436 | CDG → BOG | May 7, 14:45 UTC | May 7, 23:49 UTC | 9h 4m |
| 2026-05-06 | AFR185 | HKG → CDG | May 6, 22:50 UTC | May 7, 03:25 UTC | 4h 35m |
| 2026-05-06 | AFR185 | HKG → CDG | May 6, 14:40 UTC | May 6, 15:00 UTC | 20m |
| 2026-05-05 | AFR188 | CDG → HKG | May 5, 21:55 UTC | May 6, 09:25 UTC | 11h 30m |
| 2026-05-05 | AFR199 | BKK → CDG | May 5, 05:00 UTC | May 5, 06:05 UTC | 1h 5m |
| 2026-05-04 | AFR198 | CDG → BKK | May 4, 15:10 UTC | May 5, 01:45 UTC | 10h 36m |
| 2026-05-03 | AFR375G | YVR → CDG | May 3, 20:40 UTC | May 4, 05:45 UTC | 9h 5m |
| 2026-05-03 | AFR374F | CDG → YVR | May 3, 09:00 UTC | May 3, 18:14 UTC | 9h 15m |
| 2026-05-02 | AFR407 | SCL → CDG | May 2, 17:30 UTC | May 3, 03:35 UTC | 10h 4m |
| 2026-05-02 | AFR407 | SCL → CDG | May 2, 14:35 UTC | May 2, 14:45 UTC | 10m |
| 2026-05-01 | AFR406 | CDG → SCL | May 1, 21:40 UTC | May 1, 23:05 UTC | 1h 25m |
| 2026-05-01 | AFR435A | MEX → CDG | May 1, 02:20 UTC | May 1, 17:10 UTC | 14h 50m |
| 2026-04-30 | AFR436 | CDG → BOG | Apr 30, 18:35 UTC | May 1, 17:10 UTC | 22h 35m |
| 2026-04-30 | AFR435 | MEX → CDG | Apr 30, 11:15 UTC | Apr 30, 13:05 UTC | 1h 50m |
| 2026-04-29 | AFR436 | CDG → BOG | Apr 29, 14:10 UTC | Apr 29, 23:25 UTC | 9h 14m |
| 2026-04-28 | AFR995 | JNB → CDG | Apr 28, 16:15 UTC | Apr 29, 04:10 UTC | 11h 55m |
| 2026-04-27 | AFR990 | CDG → JNB | Apr 27, 21:40 UTC | Apr 28, 08:10 UTC | 10h 30m |
| 2026-04-27 | AFR477 | CDG → PTY | Apr 27, 03:45 UTC | Apr 27, 16:10 UTC | 12h 25m |
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-HTYK page for operator, model, and routing details .