sensors Mode-S transponder
39B861
ICAO 24-bit transponder address · allocated to France
Currently assigned to F-HODB · PIPER PA-31-300/310/325/350/425
- Hex
- 39B861
- Octal
- 16334141
- Decimal
- 3,782,753
- Country
- FR
- Tail
- F-HODB
- Type
- PA31
- Flights observed
- 41
- Distinct callsigns
- 7
- Country
- FR
- Last broadcast
- 23d ago
Last known position
Country allocation
The ICAO 24-bit address 39B861 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 7 distinct
Recent flights last 41
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | PXR31M | - | Jul 26, 15:10 UTC | Jul 26, 18:30 UTC | 3h 20m |
| 2026-07-25 | PXR31M | - | Jul 25, 13:35 UTC | Jul 25, 16:40 UTC | 3h 5m |
| 2026-07-25 | PXR31M | - | Jul 25, 09:15 UTC | Jul 25, 11:50 UTC | 2h 35m |
| 2026-07-24 | PXR31M | - | Jul 24, 11:35 UTC | Jul 24, 17:50 UTC | 6h 15m |
| 2026-07-23 | PXR31M | - | Jul 23, 10:30 UTC | Jul 23, 16:00 UTC | 5h 30m |
| 2026-07-22 | PXR31M | - | Jul 22, 11:10 UTC | Jul 22, 15:40 UTC | 4h 30m |
| 2026-07-21 | PXR31M | - | Jul 21, 10:35 UTC | Jul 21, 16:20 UTC | 5h 45m |
| 2026-07-19 | PXR31M | - | Jul 19, 10:45 UTC | Jul 19, 17:15 UTC | 6h 30m |
| 2026-07-18 | PXR31M | - | Jul 18, 10:50 UTC | Jul 18, 17:45 UTC | 6h 55m |
| 2026-07-17 | PXR31M | - | Jul 17, 10:50 UTC | Jul 17, 16:04 UTC | 5h 15m |
| 2026-07-16 | PXR31M | - | Jul 16, 11:34 UTC | Jul 16, 15:35 UTC | 4h 0m |
| 2026-07-15 | PXR31M | - | Jul 15, 11:25 UTC | Jul 15, 14:05 UTC | 2h 40m |
| 2026-07-14 | PXR31M | CFE → CFE | Jul 14, 10:45 UTC | Jul 14, 15:40 UTC | 4h 55m |
| 2026-07-12 | PXR31M | - | Jul 12, 11:35 UTC | Jul 12, 15:50 UTC | 4h 15m |
| 2026-07-11 | PXR31M | - | Jul 11, 11:05 UTC | Jul 11, 15:30 UTC | 4h 25m |
| 2026-07-10 | PXR31M | - | Jul 10, 11:05 UTC | Jul 10, 14:20 UTC | 3h 15m |
| 2026-07-09 | PXR31M | - | Jul 9, 10:10 UTC | Jul 9, 15:35 UTC | 5h 25m |
| 2026-07-08 | PXR31M | - | Jul 8, 12:00 UTC | Jul 8, 16:00 UTC | 4h 0m |
| 2026-07-07 | PXR31M | - | Jul 7, 10:50 UTC | Jul 7, 13:25 UTC | 2h 35m |
| 2026-07-06 | PXR31M | - | Jul 6, 09:55 UTC | Jul 6, 15:40 UTC | 5h 45m |
| 2026-07-05 | PXR31M | - | Jul 5, 11:10 UTC | Jul 5, 15:55 UTC | 4h 45m |
| 2026-07-04 | PXR31M | - | Jul 4, 14:30 UTC | Jul 4, 17:35 UTC | 3h 5m |
| 2026-07-03 | PXR31M | - | Jul 3, 08:45 UTC | Jul 3, 12:10 UTC | 3h 25m |
| 2026-07-03 | PXR31M | - | Jul 3, 06:40 UTC | Jul 3, 06:50 UTC | 10m |
| 2026-07-02 | PXR31M | - | Jul 2, 14:40 UTC | Jul 2, 14:55 UTC | 15m |
| 2026-06-24 | PXR31L | - | Jun 24, 15:39 UTC | Jun 24, 15:49 UTC | 10m |
| 2026-06-24 | PXR31L | - | Jun 24, 09:34 UTC | Jun 24, 11:54 UTC | 2h 20m |
| 2026-06-23 | PXR31L | - | Jun 23, 14:15 UTC | Jun 23, 16:39 UTC | 2h 25m |
| 2026-06-15 | PXR31C | - | Jun 15, 15:35 UTC | Jun 15, 17:30 UTC | 1h 55m |
| 2026-05-29 | PXR31A | - | May 29, 07:35 UTC | May 29, 09:30 UTC | 1h 55m |
| 2026-05-26 | PXR31A | - | May 26, 12:14 UTC | May 26, 12:30 UTC | 15m |
| 2026-05-26 | PXR31A | - | May 26, 08:24 UTC | May 26, 12:10 UTC | 3h 45m |
| 2026-05-25 | PXR31A | - | May 25, 13:45 UTC | May 25, 16:30 UTC | 2h 45m |
| 2026-05-25 | PXR31A | - | May 25, 07:30 UTC | May 25, 12:45 UTC | 5h 15m |
| 2026-05-24 | PXR31A | - | May 24, 14:05 UTC | May 24, 16:35 UTC | 2h 30m |
| 2026-05-24 | PXR31A | - | May 24, 07:30 UTC | May 24, 13:05 UTC | 5h 35m |
| 2026-05-18 | FHODB | - | May 18, 15:00 UTC | May 18, 15:10 UTC | 10m |
| 2026-05-01 | PXR31R | - | May 1, 10:10 UTC | May 1, 16:55 UTC | 6h 45m |
| 2026-04-30 | PXR31R | - | Apr 30, 15:00 UTC | Apr 30, 17:05 UTC | 2h 5m |
| 2026-04-29 | PXR31ST | - | Apr 29, 22:40 UTC | Apr 30, 00:30 UTC | 1h 49m |
| 2026-04-21 | PXR31L | - | Apr 21, 19:45 UTC | Apr 21, 20:40 UTC | 55m |
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-HODB page for operator, model, and routing details .