sensors Mode-S transponder
AA6D25
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N771EC · FOUND FB-2 Bush Hawk · operated by CSC DELAWARE TRUST CO TRUSTEE
- Hex
- AA6D25
- Octal
- 52466445
- Decimal
- 11,169,061
- Country
- US
- Tail
- N771EC
- Type
- FBA2
- Flights observed
- 42
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 15d ago
Last known position
Country allocation
The ICAO 24-bit address AA6D25 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 |
|---|---|---|---|
| N771EC | - | 42 | 2026-07-21 |
Recent flights last 42
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-21 | N771EC | - | Jul 21, 13:30 UTC | Jul 21, 15:30 UTC | 2h 0m |
| 2026-07-20 | N771EC | - | Jul 20, 14:05 UTC | Jul 20, 17:50 UTC | 3h 45m |
| 2026-07-17 | N771EC | - | Jul 17, 14:04 UTC | Jul 17, 14:55 UTC | 50m |
| 2026-07-17 | N771EC | - | Jul 17, 13:10 UTC | Jul 17, 13:25 UTC | 15m |
| 2026-07-17 | N771EC | - | Jul 17, 12:10 UTC | Jul 17, 12:40 UTC | 30m |
| 2026-07-09 | N771EC | - | Jul 9, 13:25 UTC | Jul 9, 16:05 UTC | 2h 40m |
| 2026-07-08 | N771EC | MHT → MHT | Jul 8, 13:40 UTC | Jul 8, 17:30 UTC | 3h 50m |
| 2026-06-30 | N771EC | - | Jun 30, 16:25 UTC | Jun 30, 16:45 UTC | 20m |
| 2026-06-30 | N771EC | - | Jun 30, 14:30 UTC | Jun 30, 15:30 UTC | 1h 0m |
| 2026-06-30 | N771EC | - | Jun 30, 13:20 UTC | Jun 30, 13:55 UTC | 35m |
| 2026-06-29 | N771EC | - | Jun 29, 13:04 UTC | Jun 29, 19:20 UTC | 6h 15m |
| 2026-06-24 | N771EC | - | Jun 24, 18:44 UTC | Jun 24, 19:04 UTC | 20m |
| 2026-06-24 | N771EC | - | Jun 24, 15:35 UTC | Jun 24, 15:39 UTC | 5m |
| 2026-06-24 | N771EC | - | Jun 24, 13:05 UTC | Jun 24, 13:34 UTC | 30m |
| 2026-06-17 | N771EC | - | Jun 17, 13:30 UTC | Jun 17, 16:10 UTC | 2h 40m |
| 2026-06-16 | N771EC | - | Jun 16, 16:35 UTC | Jun 16, 19:30 UTC | 2h 55m |
| 2026-06-16 | N771EC | MHT → LNS | Jun 16, 12:50 UTC | Jun 16, 15:45 UTC | 2h 55m |
| 2026-06-04 | N771EC | - | Jun 4, 18:05 UTC | Jun 4, 18:20 UTC | 15m |
| 2026-06-04 | N771EC | - | Jun 4, 14:35 UTC | Jun 4, 15:10 UTC | 35m |
| 2026-06-02 | N771EC | - | Jun 2, 13:40 UTC | Jun 2, 17:15 UTC | 3h 35m |
| 2026-05-27 | N771EC | - | May 27, 13:35 UTC | May 27, 16:30 UTC | 2h 55m |
| 2026-05-26 | N771EC | - | May 26, 14:24 UTC | May 26, 18:10 UTC | 3h 45m |
| 2026-05-22 | N771EC | - | May 22, 14:00 UTC | May 22, 14:10 UTC | 10m |
| 2026-05-22 | N771EC | - | May 22, 12:55 UTC | May 22, 13:05 UTC | 10m |
| 2026-05-21 | N771EC | - | May 21, 13:40 UTC | May 21, 14:05 UTC | 25m |
| 2026-05-21 | N771EC | - | May 21, 12:25 UTC | May 21, 12:35 UTC | 10m |
| 2026-05-21 | N771EC | - | May 21, 11:10 UTC | May 21, 11:20 UTC | 10m |
| 2026-05-19 | N771EC | - | May 19, 13:20 UTC | May 19, 16:05 UTC | 2h 45m |
| 2026-05-12 | N771EC | - | May 12, 17:00 UTC | May 12, 17:20 UTC | 20m |
| 2026-05-12 | N771EC | - | May 12, 16:00 UTC | May 12, 16:10 UTC | 10m |
| 2026-05-12 | N771EC | - | May 12, 15:05 UTC | May 12, 15:15 UTC | 10m |
| 2026-05-12 | N771EC | - | May 12, 13:40 UTC | May 12, 14:05 UTC | 25m |
| 2026-05-11 | N771EC | - | May 11, 16:25 UTC | May 11, 19:50 UTC | 3h 26m |
| 2026-05-11 | N771EC | - | May 11, 13:40 UTC | May 11, 15:45 UTC | 2h 5m |
| 2026-05-01 | N771EC | - | May 1, 15:05 UTC | May 1, 15:25 UTC | 20m |
| 2026-05-01 | N771EC | - | May 1, 13:45 UTC | May 1, 14:15 UTC | 30m |
| 2026-05-01 | N771EC | - | May 1, 12:10 UTC | May 1, 12:45 UTC | 35m |
| 2026-04-28 | N771EC | - | Apr 28, 13:15 UTC | Apr 28, 17:00 UTC | 3h 45m |
| 2026-04-27 | N771EC | - | Apr 27, 14:40 UTC | Apr 27, 17:25 UTC | 2h 45m |
| 2026-04-14 | N771EC | - | Apr 14, 16:50 UTC | Apr 14, 17:10 UTC | 20m |
| 2026-04-14 | N771EC | - | Apr 14, 14:55 UTC | Apr 14, 16:45 UTC | 1h 50m |
| 2026-04-14 | N771EC | - | Apr 14, 13:20 UTC | Apr 14, 14:45 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 N771EC page for operator, model, and routing details .