sensors Mode-S transponder
AA6DB8
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N771L · GULFSTREAM 4 · operated by N157BC LLC
- Hex
- AA6DB8
- Octal
- 52466670
- Decimal
- 11,169,208
- Country
- US
- Tail
- N771L
- Type
- GLF4
- Flights observed
- 53
- Distinct callsigns
- 2
- Country
- US
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address AA6DB8 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 2 distinct
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | TWY70 | - | Jul 24, 23:20 UTC | Jul 25, 00:00 UTC | 40m |
| 2026-07-20 | TWY70 | - | Jul 20, 18:30 UTC | Jul 20, 21:00 UTC | 2h 30m |
| 2026-07-20 | TWY70 | - | Jul 20, 00:55 UTC | Jul 20, 02:40 UTC | 1h 45m |
| 2026-07-19 | TWY70 | - | Jul 19, 12:45 UTC | Jul 19, 14:10 UTC | 1h 25m |
| 2026-07-18 | TWY70 | APA → PWK | Jul 18, 19:05 UTC | Jul 18, 21:00 UTC | 1h 55m |
| 2026-07-15 | TWY70 | - | Jul 15, 17:55 UTC | Jul 15, 19:50 UTC | 1h 55m |
| 2026-07-15 | TWY70 | - | Jul 15, 16:30 UTC | Jul 15, 16:45 UTC | 15m |
| 2026-07-08 | TWY70 | - | Jul 8, 23:10 UTC | Jul 8, 23:30 UTC | 20m |
| 2026-07-08 | N771L | ORK → PWK | Jul 8, 15:00 UTC | Jul 8, 22:30 UTC | 7h 30m |
| 2026-07-08 | N771L | - | Jul 8, 10:20 UTC | Jul 8, 13:55 UTC | 3h 35m |
| 2026-07-08 | TWY70 | - | Jul 8, 08:00 UTC | Jul 8, 08:20 UTC | 20m |
| 2026-07-01 | TWY70 | - | Jul 1, 16:00 UTC | Jul 1, 16:15 UTC | 15m |
| 2026-07-01 | TWY70 | - | Jul 1, 12:45 UTC | Jul 1, 15:25 UTC | 2h 40m |
| 2026-06-29 | TWY70 | - | Jun 29, 11:35 UTC | Jun 29, 13:49 UTC | 2h 15m |
| 2026-06-25 | TWY70 | - | Jun 25, 03:59 UTC | Jun 25, 09:45 UTC | 5h 45m |
| 2026-06-25 | TWY70 | - | Jun 25, 01:54 UTC | Jun 25, 02:05 UTC | 10m |
| 2026-06-18 | TWY70 | - | Jun 18, 04:45 UTC | Jun 18, 05:00 UTC | 15m |
| 2026-06-18 | TWY70 | APA → PWK | Jun 18, 02:30 UTC | Jun 18, 04:10 UTC | 1h 40m |
| 2026-06-17 | TWY70 | - | Jun 17, 23:20 UTC | Jun 18, 01:10 UTC | 1h 50m |
| 2026-06-14 | TWY70 | - | Jun 14, 14:10 UTC | Jun 14, 17:45 UTC | 3h 35m |
| 2026-06-14 | TWY70 | - | Jun 14, 12:50 UTC | Jun 14, 13:05 UTC | 15m |
| 2026-06-09 | TWY70 | - | Jun 9, 01:55 UTC | Jun 9, 02:10 UTC | 15m |
| 2026-06-08 | TWY70 | - | Jun 8, 22:50 UTC | Jun 9, 01:15 UTC | 2h 25m |
| 2026-06-04 | TWY70 | - | Jun 4, 17:25 UTC | Jun 4, 20:20 UTC | 2h 55m |
| 2026-06-04 | TWY70 | - | Jun 4, 14:35 UTC | Jun 4, 14:50 UTC | 15m |
| 2026-05-23 | TWY70 | - | May 23, 14:50 UTC | May 23, 16:35 UTC | 1h 45m |
| 2026-05-22 | TWY70 | - | May 22, 17:10 UTC | May 22, 18:10 UTC | 1h 0m |
| 2026-05-22 | TWY70 | - | May 22, 16:05 UTC | May 22, 16:20 UTC | 15m |
| 2026-05-21 | TWY70 | - | May 21, 19:40 UTC | May 21, 22:10 UTC | 2h 30m |
| 2026-05-21 | TWY70 | - | May 21, 10:55 UTC | May 21, 18:55 UTC | 8h 0m |
| 2026-05-21 | TWY70 | - | May 21, 08:50 UTC | May 21, 09:15 UTC | 25m |
| 2026-05-16 | TWY70 | - | May 16, 12:16 UTC | May 16, 12:50 UTC | 35m |
| 2026-05-16 | TWY70 | - | May 16, 03:15 UTC | May 16, 10:05 UTC | 6h 51m |
| 2026-05-16 | TWY70 | - | May 16, 00:55 UTC | May 16, 02:45 UTC | 1h 50m |
| 2026-05-13 | TWY70 | - | May 13, 19:55 UTC | May 13, 22:05 UTC | 2h 10m |
| 2026-05-13 | TWY70 | - | May 13, 16:35 UTC | May 13, 18:35 UTC | 2h 0m |
| 2026-05-12 | TWY70 | - | May 12, 17:30 UTC | May 12, 21:01 UTC | 3h 30m |
| 2026-05-07 | TWY70 | - | May 7, 18:50 UTC | May 7, 22:35 UTC | 3h 45m |
| 2026-05-05 | TWY70 | - | May 5, 17:55 UTC | May 5, 21:01 UTC | 3h 5m |
| 2026-05-03 | TWY70 | - | May 3, 12:15 UTC | May 3, 14:50 UTC | 2h 35m |
| 2026-05-03 | TWY70 | - | May 3, 11:10 UTC | May 3, 11:30 UTC | 20m |
| 2026-04-26 | TWY70 | PHX → GYY | Apr 26, 20:55 UTC | Apr 27, 00:10 UTC | 3h 15m |
| 2026-04-26 | TWY70 | - | Apr 26, 19:00 UTC | Apr 26, 20:00 UTC | 1h 0m |
| 2026-04-22 | TWY70 | - | Apr 22, 16:25 UTC | Apr 22, 17:15 UTC | 50m |
| 2026-04-22 | TWY70 | - | Apr 22, 12:25 UTC | Apr 22, 15:40 UTC | 3h 15m |
| 2026-04-22 | TWY70 | - | Apr 22, 11:20 UTC | Apr 22, 11:35 UTC | 15m |
| 2026-04-16 | TWY70 | - | Apr 16, 01:10 UTC | Apr 16, 01:25 UTC | 15m |
| 2026-04-16 | TWY70 | - | Apr 16, 00:20 UTC | Apr 16, 01:05 UTC | 45m |
| 2026-04-15 | TWY70 | - | Apr 15, 23:10 UTC | Apr 15, 23:35 UTC | 25m |
| 2026-04-15 | TWY70 | - | Apr 15, 22:25 UTC | Apr 15, 23:00 UTC | 35m |
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 N771L page for operator, model, and routing details .