sensors Mode-S transponder
AAB879
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N790ER · DIAMOND DA-42 Guardian · operated by EMBRY RIDDLE AERONAUTICAL UNIVERSITY INC
- Hex
- AAB879
- Octal
- 52534171
- Decimal
- 11,188,345
- Country
- US
- Tail
- N790ER
- Type
- DA42
- Flights observed
- 38
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 22d ago
Last known position
Country allocation
The ICAO 24-bit address AAB879 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 |
|---|---|---|---|
| ERU90 | - | 38 | 2026-07-10 |
Recent flights last 38
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-10 | ERU90 | - | Jul 10, 17:45 UTC | Jul 10, 18:35 UTC | 50m |
| 2026-07-08 | ERU90 | - | Jul 8, 04:00 UTC | Jul 8, 05:25 UTC | 1h 25m |
| 2026-07-08 | ERU90 | HII → CLD | Jul 8, 00:40 UTC | Jul 8, 01:50 UTC | 1h 10m |
| 2026-07-07 | ERU90 | - | Jul 7, 23:40 UTC | Jul 8, 00:30 UTC | 50m |
| 2026-07-07 | ERU90 | - | Jul 7, 20:25 UTC | Jul 7, 21:00 UTC | 35m |
| 2026-07-06 | ERU90 | - | Jul 6, 03:25 UTC | Jul 6, 04:55 UTC | 1h 30m |
| 2026-07-05 | ERU90 | - | Jul 5, 23:25 UTC | Jul 6, 00:40 UTC | 1h 15m |
| 2026-07-03 | ERU90 | - | Jul 3, 20:10 UTC | Jul 3, 20:20 UTC | 10m |
| 2026-07-01 | ERU90 | - | Jul 1, 23:15 UTC | Jul 2, 00:05 UTC | 50m |
| 2026-06-21 | ERU90 | - | Jun 21, 16:54 UTC | Jun 21, 17:29 UTC | 35m |
| 2026-06-20 | ERU90 | - | Jun 20, 18:19 UTC | Jun 20, 19:15 UTC | 55m |
| 2026-06-20 | ERU90 | - | Jun 20, 00:34 UTC | Jun 20, 01:34 UTC | 1h 0m |
| 2026-06-19 | ERU90 | - | Jun 19, 17:39 UTC | Jun 19, 18:25 UTC | 45m |
| 2026-06-18 | ERU90 | - | Jun 18, 23:20 UTC | Jun 18, 23:30 UTC | 10m |
| 2026-06-18 | ERU90 | - | Jun 18, 20:15 UTC | Jun 18, 21:00 UTC | 45m |
| 2026-06-12 | ERU90 | - | Jun 12, 15:25 UTC | Jun 12, 15:35 UTC | 10m |
| 2026-06-11 | ERU90 | - | Jun 11, 14:35 UTC | Jun 11, 14:45 UTC | 10m |
| 2026-06-10 | ERU90 | - | Jun 10, 16:55 UTC | Jun 10, 18:00 UTC | 1h 5m |
| 2026-06-10 | ERU90 | - | Jun 10, 14:20 UTC | Jun 10, 14:35 UTC | 15m |
| 2026-06-08 | ERU90 | - | Jun 8, 20:25 UTC | Jun 8, 21:20 UTC | 55m |
| 2026-06-03 | ERU90 | - | Jun 3, 23:05 UTC | Jun 3, 23:50 UTC | 45m |
| 2026-06-03 | ERU90 | - | Jun 3, 20:10 UTC | Jun 3, 20:20 UTC | 10m |
| 2026-06-01 | ERU90 | - | Jun 1, 21:25 UTC | Jun 1, 22:15 UTC | 50m |
| 2026-06-01 | ERU90 | - | Jun 1, 17:30 UTC | Jun 1, 18:05 UTC | 35m |
| 2026-05-31 | ERU90 | - | May 31, 23:20 UTC | May 31, 23:45 UTC | 25m |
| 2026-05-25 | ERU90 | - | May 25, 15:50 UTC | May 25, 16:10 UTC | 20m |
| 2026-05-23 | ERU90 | - | May 23, 22:00 UTC | May 23, 22:10 UTC | 10m |
| 2026-05-22 | ERU90 | - | May 22, 20:00 UTC | May 22, 20:50 UTC | 50m |
| 2026-05-21 | ERU90 | - | May 21, 17:25 UTC | May 21, 18:00 UTC | 35m |
| 2026-05-13 | ERU90 | - | May 13, 01:05 UTC | May 13, 01:45 UTC | 40m |
| 2026-05-05 | ERU90 | - | May 5, 17:55 UTC | May 5, 18:10 UTC | 15m |
| 2026-04-21 | ERU90 | - | Apr 21, 23:05 UTC | Apr 21, 23:45 UTC | 40m |
| 2026-04-20 | ERU90 | - | Apr 20, 17:25 UTC | Apr 20, 17:35 UTC | 10m |
| 2026-04-16 | ERU90 | - | Apr 16, 13:44 UTC | Apr 16, 14:20 UTC | 35m |
| 2026-04-14 | ERU90 | - | Apr 14, 16:50 UTC | Apr 14, 17:10 UTC | 20m |
| 2026-04-13 | ERU90 | - | Apr 13, 02:50 UTC | Apr 13, 03:45 UTC | 55m |
| 2026-04-13 | ERU90 | - | Apr 13, 00:20 UTC | Apr 13, 01:25 UTC | 1h 5m |
| 2026-04-13 | ERU90 | - | Apr 13, 00:10 UTC | Apr 13, 01:25 UTC | 1h 15m |
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 N790ER page for operator, model, and routing details .