sensors Mode-S transponder
AA8B74
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N779LD · GULFSTREAM 4 · operated by TVPX AIRCRAFT SOLUTIONS INC TRUSTEE
- Hex
- AA8B74
- Octal
- 52505564
- Decimal
- 11,176,820
- Country
- US
- Tail
- N779LD
- Type
- GLF4
- Flights observed
- 19
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 26d ago
Current position
Country allocation
The ICAO 24-bit address AA8B74 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 |
|---|---|---|---|
| N779LD | - | 19 | 2026-07-26 |
Recent flights last 19
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N779LD | VNY → LAX | Jul 26, 20:30 UTC | Jul 26, 20:40 UTC | 10m |
| 2026-07-26 | N779LD | - | Jul 26, 04:35 UTC | Jul 26, 06:25 UTC | 1h 50m |
| 2026-07-25 | N779LD | GEG → VNY | Jul 25, 07:40 UTC | Jul 26, 06:25 UTC | 22h 45m |
| 2026-07-25 | N779LD | VNY → GEG | Jul 25, 04:00 UTC | Jul 25, 05:55 UTC | 1h 55m |
| 2026-07-24 | N779LD | - | Jul 24, 21:10 UTC | Jul 25, 02:25 UTC | 5h 15m |
| 2026-07-21 | N779LD | - | Jul 21, 03:00 UTC | Jul 21, 05:35 UTC | 2h 35m |
| 2026-07-20 | N779LD | - | Jul 20, 00:05 UTC | Jul 20, 02:40 UTC | 2h 35m |
| 2026-07-18 | N779LD | - | Jul 18, 17:40 UTC | Jul 18, 20:15 UTC | 2h 35m |
| 2026-07-16 | N779LD | - | Jul 16, 21:40 UTC | Jul 17, 00:25 UTC | 2h 45m |
| 2026-07-15 | N779LD | VNY → TEB | Jul 15, 19:20 UTC | Jul 16, 00:30 UTC | 5h 10m |
| 2026-07-14 | N779LD | VNY → VNY | Jul 14, 19:05 UTC | Jul 14, 19:55 UTC | 50m |
| 2026-06-14 | N779LD | - | Jun 14, 23:29 UTC | Jun 15, 04:40 UTC | 5h 10m |
| 2026-06-14 | N779LD | - | Jun 14, 21:00 UTC | Jun 14, 21:55 UTC | 55m |
| 2026-06-12 | N779LD | - | Jun 12, 21:20 UTC | Jun 12, 22:15 UTC | 55m |
| 2026-06-10 | N779LD | - | Jun 10, 18:05 UTC | Jun 10, 21:15 UTC | 3h 10m |
| 2026-05-30 | N779LD | - | May 30, 08:40 UTC | May 30, 08:50 UTC | 10m |
| 2026-05-30 | N779LD | - | May 30, 05:20 UTC | May 30, 07:55 UTC | 2h 35m |
| 2026-05-28 | N779LD | - | May 28, 21:25 UTC | May 28, 23:15 UTC | 1h 50m |
| 2026-05-25 | N779LD | HWO → CUN | May 25, 17:05 UTC | May 25, 18:30 UTC | 1h 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 N779LD page for operator, model, and routing details .