sensors Mode-S transponder
A6D8BF
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N540JL · CESSNA 525 Citation M2 · operated by BANK OF UTAH TRUSTEE
- Hex
- A6D8BF
- Octal
- 51554277
- Decimal
- 10,934,463
- Country
- US
- Tail
- N540JL
- Type
- C25M
- Flights observed
- 38
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 17, 00:35 UTC
Last known position
Country allocation
The ICAO 24-bit address A6D8BF falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| N540JL | - | 38 | 2026-07-17 |
Recent flights last 38
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | N540JL | - | Jul 17, 00:10 UTC | Jul 17, 00:35 UTC | 25m |
| 2026-07-15 | N540JL | - | Jul 15, 18:15 UTC | Jul 15, 18:45 UTC | 30m |
| 2026-07-13 | N540JL | - | Jul 13, 15:50 UTC | Jul 13, 16:10 UTC | 20m |
| 2026-07-13 | N540JL | - | Jul 13, 14:35 UTC | Jul 13, 15:10 UTC | 35m |
| 2026-07-06 | N540JL | - | Jul 6, 18:20 UTC | Jul 6, 19:20 UTC | 1h 0m |
| 2026-07-05 | N540JL | - | Jul 5, 15:05 UTC | Jul 5, 15:55 UTC | 50m |
| 2026-07-03 | N540JL | - | Jul 3, 16:55 UTC | Jul 3, 18:35 UTC | 1h 40m |
| 2026-07-03 | N540JL | - | Jul 3, 12:55 UTC | Jul 3, 14:50 UTC | 1h 55m |
| 2026-07-01 | N540JL | - | Jul 1, 17:20 UTC | Jul 1, 18:15 UTC | 55m |
| 2026-06-30 | N540JL | - | Jun 30, 16:45 UTC | Jun 30, 18:10 UTC | 1h 25m |
| 2026-06-30 | N540JL | - | Jun 30, 14:35 UTC | Jun 30, 14:55 UTC | 20m |
| 2026-06-29 | N540JL | - | Jun 29, 13:44 UTC | Jun 29, 14:14 UTC | 30m |
| 2026-06-25 | N540JL | - | Jun 25, 23:19 UTC | Jun 25, 23:44 UTC | 25m |
| 2026-06-24 | N540JL | - | Jun 24, 23:10 UTC | Jun 24, 23:40 UTC | 30m |
| 2026-06-12 | N540JL | - | Jun 12, 20:05 UTC | Jun 12, 20:55 UTC | 50m |
| 2026-06-12 | N540JL | - | Jun 12, 02:20 UTC | Jun 12, 17:35 UTC | 15h 15m |
| 2026-06-10 | N540JL | - | Jun 10, 20:00 UTC | Jun 10, 22:05 UTC | 2h 5m |
| 2026-06-09 | N540JL | - | Jun 9, 21:30 UTC | Jun 9, 22:00 UTC | 30m |
| 2026-06-05 | N540JL | - | Jun 5, 19:55 UTC | Jun 5, 21:40 UTC | 1h 45m |
| 2026-06-05 | N540JL | - | Jun 5, 15:45 UTC | Jun 5, 17:35 UTC | 1h 50m |
| 2026-05-21 | N540JL | - | May 21, 22:10 UTC | May 21, 22:40 UTC | 30m |
| 2026-05-13 | N540JL | - | May 13, 12:25 UTC | May 13, 12:50 UTC | 25m |
| 2026-05-10 | N540JL | - | May 10, 17:49 UTC | May 10, 18:49 UTC | 1h 0m |
| 2026-05-10 | N540JL | - | May 10, 15:29 UTC | May 10, 16:10 UTC | 40m |
| 2026-05-10 | N540JL | - | May 10, 04:45 UTC | May 10, 14:09 UTC | 9h 25m |
| 2026-05-02 | N540JL | - | May 2, 19:20 UTC | May 2, 21:25 UTC | 2h 5m |
| 2026-04-30 | N540JL | CUN → OPF | Apr 30, 23:45 UTC | May 1, 01:25 UTC | 1h 40m |
| 2026-04-30 | N540JL | - | Apr 30, 18:55 UTC | Apr 30, 19:20 UTC | 25m |
| 2026-04-30 | N540JL | - | Apr 30, 15:30 UTC | Apr 30, 15:55 UTC | 25m |
| 2026-04-28 | N540JL | - | Apr 28, 22:49 UTC | Apr 29, 00:20 UTC | 1h 30m |
| 2026-04-27 | N540JL | - | Apr 27, 17:05 UTC | Apr 27, 18:40 UTC | 1h 35m |
| 2026-04-27 | N540JL | - | Apr 27, 15:50 UTC | Apr 27, 16:20 UTC | 30m |
| 2026-04-26 | N540JL | - | Apr 26, 23:45 UTC | Apr 27, 00:00 UTC | 15m |
| 2026-04-25 | N540JL | - | Apr 25, 16:30 UTC | Apr 25, 16:45 UTC | 15m |
| 2026-04-16 | N540JL | - | Apr 16, 17:15 UTC | Apr 16, 17:35 UTC | 20m |
| 2026-04-16 | N540JL | - | Apr 16, 14:15 UTC | Apr 16, 14:45 UTC | 30m |
| 2026-04-14 | N540JL | - | Apr 14, 22:55 UTC | Apr 14, 23:15 UTC | 20m |
| 2026-04-14 | N540JL | - | Apr 14, 21:25 UTC | Apr 14, 21:55 UTC | 30m |
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 N540JL page for operator, model, and routing details .