sensors Mode-S transponder
0C4303
ICAO 24-bit transponder address · allocated to Dominican Republic
Currently assigned to HI1066 · MCDONNELL-DOUGLAS MD-82
- Hex
- 0C4303
- Octal
- 03041403
- Decimal
- 803,587
- Country
- DO
- Tail
- HI1066
- Type
- MD82
- Flights observed
- 21
- Distinct callsigns
- 2
- Country
- DO
- Last broadcast
- 13h ago
Last known position
Country allocation
The ICAO 24-bit address 0C4303 falls within the block assigned to Dominican Republic (DO) by ICAO Annex 10, Volume III. Every aircraft registered in Dominican Republic 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 21
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-03 | REA300 | CUR → SDQ | Jun 3, 14:05 UTC | Jun 3, 14:15 UTC | 10m |
| 2026-06-03 | REA301 | SDQ → CUR | Jun 3, 12:05 UTC | Jun 3, 12:15 UTC | 10m |
| 2026-05-31 | REA300 | CUR → SDQ | May 31, 14:05 UTC | May 31, 14:15 UTC | 10m |
| 2026-05-31 | REA301 | SDQ → CUR | May 31, 12:05 UTC | May 31, 12:15 UTC | 10m |
| 2026-05-24 | REA300 | CUR → SDQ | May 24, 14:00 UTC | May 24, 14:10 UTC | 10m |
| 2026-05-24 | REA301 | SDQ → CUR | May 24, 12:15 UTC | May 24, 12:25 UTC | 10m |
| 2026-05-20 | REA301 | SDQ → CUR | May 20, 12:10 UTC | May 20, 12:20 UTC | 10m |
| 2026-05-17 | REA300 | CUR → SDQ | May 17, 14:01 UTC | May 17, 14:10 UTC | 10m |
| 2026-05-15 | REA300 | CUR → SDQ | May 15, 14:15 UTC | May 15, 14:25 UTC | 10m |
| 2026-05-15 | REA301 | SDQ → CUR | May 15, 12:00 UTC | May 15, 12:10 UTC | 10m |
| 2026-05-10 | REA300 | CUR → SDQ | May 10, 14:04 UTC | May 10, 14:14 UTC | 10m |
| 2026-05-10 | REA301 | SDQ → CUR | May 10, 12:19 UTC | May 10, 12:30 UTC | 10m |
| 2026-05-08 | REA300 | CUR → SDQ | May 8, 14:15 UTC | May 8, 14:25 UTC | 10m |
| 2026-05-08 | REA301 | SDQ → CUR | May 8, 12:14 UTC | May 8, 12:25 UTC | 10m |
| 2026-05-06 | REA300 | CUR → SDQ | May 6, 14:30 UTC | May 6, 14:40 UTC | 10m |
| 2026-05-06 | REA301 | SDQ → CUR | May 6, 12:05 UTC | May 6, 12:20 UTC | 15m |
| 2026-05-03 | REA300 | CUR → SDQ | May 3, 14:15 UTC | May 3, 14:25 UTC | 10m |
| 2026-04-24 | REA300 | CUR → SDQ | Apr 24, 14:10 UTC | Apr 24, 14:20 UTC | 10m |
| 2026-04-22 | REA301 | SDQ → CUR | Apr 22, 12:15 UTC | Apr 22, 12:25 UTC | 10m |
| 2026-04-19 | REA300 | CUR → SDQ | Apr 19, 14:20 UTC | Apr 19, 14:30 UTC | 10m |
| 2026-04-17 | REA300 | CUR → SDQ | Apr 17, 14:00 UTC | Apr 17, 14:10 UTC | 10m |
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 HI1066 page for operator, model, and routing details .