sensors Mode-S transponder
399043
ICAO 24-bit transponder address · allocated to France
Currently assigned to F-HECD · DASSAULT Falcon 7X
- Hex
- 399043
- Octal
- 16310103
- Decimal
- 3,772,483
- Country
- FR
- Tail
- F-HECD
- Type
- FA7X
- Flights observed
- 65
- Distinct callsigns
- 19
- Country
- FR
- Last broadcast
- 8h ago
Last known position
Country allocation
The ICAO 24-bit address 399043 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 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| FHECD | - | 7 | 2026-06-11 |
| LEA059D | - | 6 | 2026-06-18 |
| LEA066D | - | 5 | 2026-07-07 |
| LEA036D | - | 5 | 2026-04-14 |
| LEA045D | - | 4 | 2026-04-21 |
| LEA043D | - | 4 | 2026-06-25 |
| LEA023D | - | 4 | 2026-05-20 |
| LEA075D | - | 3 | 2026-07-13 |
| LEA052D | - | 3 | 2026-05-05 |
| LEA051D | - | 3 | 2026-05-29 |
| LEA046D | - | 3 | 2026-05-23 |
| LEA040D | - | 3 | 2026-07-01 |
| LEA009D | - | 3 | 2026-04-23 |
| LEA713D | - | 2 | 2026-06-03 |
| LEA072D | - | 2 | 2026-07-02 |
| LEA069D | - | 2 | 2026-06-27 |
| LEA057D | - | 2 | 2026-05-31 |
| LEA055D | - | 2 | 2026-05-15 |
| LEA053D | - | 2 | 2026-05-08 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | LEA075D | - | Jul 13, 18:55 UTC | Jul 13, 20:45 UTC | 1h 50m |
| 2026-07-13 | LEA075D | - | Jul 13, 16:15 UTC | Jul 13, 18:25 UTC | 2h 10m |
| 2026-07-13 | LEA075D | - | Jul 13, 09:10 UTC | Jul 13, 09:55 UTC | 45m |
| 2026-07-07 | LEA066D | - | Jul 7, 18:55 UTC | Jul 7, 19:40 UTC | 45m |
| 2026-07-07 | LEA066D | - | Jul 7, 11:20 UTC | Jul 7, 18:20 UTC | 7h 0m |
| 2026-07-06 | LEA066D | - | Jul 6, 08:20 UTC | Jul 6, 09:00 UTC | 40m |
| 2026-07-05 | LEA066D | - | Jul 5, 11:00 UTC | Jul 5, 14:50 UTC | 3h 50m |
| 2026-07-05 | LEA066D | - | Jul 5, 08:55 UTC | Jul 5, 09:40 UTC | 45m |
| 2026-07-02 | LEA072D | JMK → LBG | Jul 2, 17:05 UTC | Jul 2, 19:50 UTC | 2h 45m |
| 2026-07-02 | LEA072D | - | Jul 2, 13:20 UTC | Jul 2, 16:05 UTC | 2h 45m |
| 2026-07-01 | LEA040D | - | Jul 1, 18:00 UTC | Jul 1, 19:05 UTC | 1h 5m |
| 2026-07-01 | LEA040D | - | Jul 1, 14:05 UTC | Jul 1, 16:45 UTC | 2h 40m |
| 2026-06-29 | LEA040D | - | Jun 29, 05:20 UTC | Jun 29, 07:09 UTC | 1h 50m |
| 2026-06-27 | LEA069D | BRU → LBG | Jun 27, 18:09 UTC | Jun 27, 18:45 UTC | 35m |
| 2026-06-27 | LEA069D | - | Jun 27, 10:29 UTC | Jun 27, 11:04 UTC | 35m |
| 2026-06-25 | LEA043D | ZRH → LBG | Jun 25, 16:20 UTC | Jun 25, 17:14 UTC | 55m |
| 2026-06-25 | LEA043D | CLY → ZRH | Jun 25, 04:54 UTC | Jun 25, 05:55 UTC | 1h 0m |
| 2026-06-22 | LEA043D | LIN → CLY | Jun 22, 17:50 UTC | Jun 22, 18:30 UTC | 40m |
| 2026-06-22 | LEA043D | - | Jun 22, 11:24 UTC | Jun 22, 12:19 UTC | 55m |
| 2026-06-18 | LEA059D | MPL → LBG | Jun 18, 05:20 UTC | Jun 18, 06:25 UTC | 1h 5m |
| 2026-06-17 | LEA059D | - | Jun 17, 13:50 UTC | Jun 18, 03:30 UTC | 13h 40m |
| 2026-06-16 | LEA059D | - | Jun 16, 04:39 UTC | Jun 16, 05:20 UTC | 40m |
| 2026-06-15 | LEA059D | - | Jun 15, 15:10 UTC | Jun 15, 15:55 UTC | 45m |
| 2026-06-14 | LEA059D | - | Jun 14, 10:20 UTC | Jun 14, 12:15 UTC | 1h 55m |
| 2026-06-14 | LEA059D | - | Jun 14, 08:05 UTC | Jun 14, 09:00 UTC | 55m |
| 2026-06-11 | FHECD | - | Jun 11, 14:20 UTC | Jun 12, 05:15 UTC | 14h 55m |
| 2026-06-11 | FHECD | - | Jun 11, 00:35 UTC | Jun 11, 03:25 UTC | 2h 50m |
| 2026-06-09 | FHECD | - | Jun 9, 13:50 UTC | Jun 9, 14:40 UTC | 50m |
| 2026-06-08 | FHECD | - | Jun 8, 22:55 UTC | Jun 8, 23:05 UTC | 10m |
| 2026-06-08 | FHECD | - | Jun 8, 06:55 UTC | Jun 8, 07:10 UTC | 15m |
| 2026-06-08 | FHECD | - | Jun 8, 03:55 UTC | Jun 8, 04:15 UTC | 20m |
| 2026-06-07 | FHECD | - | Jun 7, 08:40 UTC | Jun 7, 23:50 UTC | 15h 10m |
| 2026-06-03 | LEA713D | - | Jun 3, 15:40 UTC | Jun 3, 17:10 UTC | 1h 30m |
| 2026-06-03 | LEA713D | LBG → MAD | Jun 3, 07:00 UTC | Jun 3, 08:30 UTC | 1h 30m |
| 2026-05-31 | LEA057D | - | May 31, 00:10 UTC | May 31, 01:11 UTC | 1h 1m |
| 2026-05-30 | LEA057D | LBG → VIE | May 30, 09:35 UTC | May 30, 11:05 UTC | 1h 30m |
| 2026-05-29 | LEA051D | - | May 29, 18:10 UTC | May 30, 02:55 UTC | 8h 45m |
| 2026-05-27 | LEA051D | BOG → DAL | May 27, 21:55 UTC | May 28, 02:30 UTC | 4h 35m |
| 2026-05-26 | LEA051D | - | May 26, 11:54 UTC | May 26, 21:09 UTC | 9h 15m |
| 2026-05-23 | LEA046D | - | May 23, 09:50 UTC | May 23, 11:45 UTC | 1h 55m |
| 2026-05-22 | LEA046D | - | May 22, 16:10 UTC | May 22, 16:40 UTC | 30m |
| 2026-05-22 | LEA046D | - | May 22, 14:05 UTC | May 22, 15:25 UTC | 1h 20m |
| 2026-05-20 | LEA023D | - | May 20, 13:40 UTC | May 20, 14:35 UTC | 55m |
| 2026-05-19 | LEA023D | LCY → BOD | May 19, 18:05 UTC | May 19, 19:20 UTC | 1h 15m |
| 2026-05-18 | LEA023D | - | May 18, 15:50 UTC | May 18, 16:15 UTC | 25m |
| 2026-05-18 | LEA023D | - | May 18, 06:35 UTC | May 18, 07:20 UTC | 45m |
| 2026-05-15 | LEA055D | - | May 15, 21:45 UTC | May 15, 23:30 UTC | 1h 45m |
| 2026-05-13 | LEA055D | - | May 13, 10:55 UTC | May 13, 12:25 UTC | 1h 30m |
| 2026-05-08 | LEA053D | LIN → LBG | May 8, 12:14 UTC | May 8, 13:25 UTC | 1h 10m |
| 2026-05-08 | LEA053D | - | May 8, 09:34 UTC | May 8, 10:39 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-HECD page for operator, model, and routing details .