sensors Mode-S transponder
A434E2
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N370MD · PIPER PA-23 · operated by ALMOST THERE AIR LLC
- Hex
- A434E2
- Octal
- 51032342
- Decimal
- 10,761,442
- Country
- US
- Tail
- N370MD
- Type
- PA23
- Flights observed
- 51
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 26, 17:20 UTC
Last known position
Country allocation
The ICAO 24-bit address A434E2 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 |
|---|---|---|---|
| N370MD | - | 51 | 2026-07-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N370MD | - | Jul 26, 15:55 UTC | Jul 26, 17:20 UTC | 1h 25m |
| 2026-07-25 | N370MD | - | Jul 25, 16:40 UTC | Jul 25, 17:40 UTC | 1h 0m |
| 2026-07-25 | N370MD | - | Jul 25, 13:15 UTC | Jul 25, 14:55 UTC | 1h 40m |
| 2026-07-24 | N370MD | - | Jul 24, 19:00 UTC | Jul 24, 21:15 UTC | 2h 15m |
| 2026-07-23 | N370MD | - | Jul 23, 16:45 UTC | Jul 23, 17:25 UTC | 40m |
| 2026-07-23 | N370MD | - | Jul 23, 11:55 UTC | Jul 23, 14:30 UTC | 2h 35m |
| 2026-07-07 | N370MD | - | Jul 7, 19:15 UTC | Jul 7, 20:05 UTC | 50m |
| 2026-07-07 | N370MD | - | Jul 7, 13:10 UTC | Jul 7, 14:55 UTC | 1h 45m |
| 2026-07-05 | N370MD | - | Jul 5, 15:10 UTC | Jul 5, 16:10 UTC | 1h 0m |
| 2026-07-02 | N370MD | - | Jul 2, 13:15 UTC | Jul 2, 14:50 UTC | 1h 35m |
| 2026-07-01 | N370MD | - | Jul 1, 23:15 UTC | Jul 2, 00:10 UTC | 55m |
| 2026-06-24 | N370MD | - | Jun 24, 14:04 UTC | Jun 24, 15:00 UTC | 55m |
| 2026-06-22 | N370MD | - | Jun 22, 17:10 UTC | Jun 22, 18:04 UTC | 55m |
| 2026-06-22 | N370MD | - | Jun 22, 14:45 UTC | Jun 22, 16:29 UTC | 1h 45m |
| 2026-06-21 | N370MD | - | Jun 21, 21:10 UTC | Jun 21, 23:50 UTC | 2h 40m |
| 2026-06-21 | N370MD | - | Jun 21, 14:19 UTC | Jun 21, 16:04 UTC | 1h 45m |
| 2026-06-19 | N370MD | - | Jun 19, 13:24 UTC | Jun 19, 16:19 UTC | 2h 55m |
| 2026-06-18 | N370MD | - | Jun 18, 19:55 UTC | Jun 18, 20:25 UTC | 30m |
| 2026-06-18 | N370MD | - | Jun 18, 18:10 UTC | Jun 18, 18:30 UTC | 20m |
| 2026-06-18 | N370MD | - | Jun 18, 15:20 UTC | Jun 18, 15:45 UTC | 25m |
| 2026-06-17 | N370MD | - | Jun 17, 17:10 UTC | Jun 17, 18:40 UTC | 1h 30m |
| 2026-06-10 | N370MD | - | Jun 10, 13:15 UTC | Jun 10, 14:45 UTC | 1h 30m |
| 2026-06-07 | N370MD | - | Jun 7, 14:45 UTC | Jun 7, 16:30 UTC | 1h 45m |
| 2026-06-06 | N370MD | - | Jun 6, 17:29 UTC | Jun 6, 17:44 UTC | 15m |
| 2026-06-06 | N370MD | - | Jun 6, 14:54 UTC | Jun 6, 15:19 UTC | 25m |
| 2026-06-06 | N370MD | - | Jun 6, 13:15 UTC | Jun 6, 14:09 UTC | 55m |
| 2026-06-04 | N370MD | - | Jun 4, 17:50 UTC | Jun 4, 18:50 UTC | 1h 0m |
| 2026-06-02 | N370MD | - | Jun 2, 23:00 UTC | Jun 3, 01:20 UTC | 2h 20m |
| 2026-05-28 | N370MD | - | May 28, 14:00 UTC | May 28, 15:45 UTC | 1h 45m |
| 2026-05-26 | N370MD | - | May 26, 21:25 UTC | May 26, 21:34 UTC | 10m |
| 2026-05-26 | N370MD | - | May 26, 20:20 UTC | May 26, 20:54 UTC | 35m |
| 2026-05-25 | N370MD | - | May 25, 13:55 UTC | May 25, 14:55 UTC | 1h 0m |
| 2026-05-23 | N370MD | - | May 23, 16:15 UTC | May 23, 17:50 UTC | 1h 35m |
| 2026-05-19 | N370MD | - | May 19, 17:05 UTC | May 19, 18:20 UTC | 1h 15m |
| 2026-05-18 | N370MD | - | May 18, 16:55 UTC | May 18, 17:55 UTC | 1h 0m |
| 2026-05-18 | N370MD | - | May 18, 13:55 UTC | May 18, 15:30 UTC | 1h 35m |
| 2026-05-16 | N370MD | - | May 16, 13:01 UTC | May 16, 13:55 UTC | 55m |
| 2026-05-15 | N370MD | - | May 15, 20:50 UTC | May 15, 21:30 UTC | 40m |
| 2026-05-15 | N370MD | - | May 15, 17:50 UTC | May 15, 19:00 UTC | 1h 10m |
| 2026-05-04 | N370MD | - | May 4, 11:50 UTC | May 4, 13:05 UTC | 1h 15m |
| 2026-04-30 | N370MD | - | Apr 30, 16:35 UTC | Apr 30, 17:35 UTC | 1h 0m |
| 2026-04-25 | N370MD | - | Apr 25, 13:40 UTC | Apr 25, 14:45 UTC | 1h 5m |
| 2026-04-23 | N370MD | - | Apr 23, 13:45 UTC | Apr 23, 14:50 UTC | 1h 5m |
| 2026-04-22 | N370MD | - | Apr 22, 20:30 UTC | Apr 22, 21:55 UTC | 1h 25m |
| 2026-04-22 | N370MD | - | Apr 22, 13:15 UTC | Apr 22, 15:00 UTC | 1h 45m |
| 2026-04-21 | N370MD | - | Apr 21, 20:55 UTC | Apr 21, 22:20 UTC | 1h 25m |
| 2026-04-20 | N370MD | - | Apr 20, 18:50 UTC | Apr 20, 19:05 UTC | 15m |
| 2026-04-16 | N370MD | - | Apr 16, 21:34 UTC | Apr 16, 22:00 UTC | 25m |
| 2026-04-16 | N370MD | - | Apr 16, 20:30 UTC | Apr 16, 21:05 UTC | 35m |
| 2026-04-14 | N370MD | - | Apr 14, 18:20 UTC | Apr 14, 18:40 UTC | 20m |
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 N370MD page for operator, model, and routing details .