sensors Mode-S transponder
0C8023
ICAO 24-bit transponder address · allocated to Colombia
Currently assigned to PZ-TCV · BOEING 737-800
- Hex
- 0C8023
- Octal
- 03100043
- Decimal
- 819,235
- Country
- CO
- Tail
- PZ-TCV
- Type
- B738
- Flights observed
- 181
- Distinct callsigns
- 11
- Country
- CO
- Last broadcast
- 13h ago
Last known position
Country allocation
The ICAO 24-bit address 0C8023 falls within the block assigned to Colombia (CO) by ICAO Annex 10, Volume III. Every aircraft registered in Colombia 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 11 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SLM431 | - | 62 | 2026-07-13 |
| SLM421 | - | 60 | 2026-07-11 |
| SLM422 | - | 27 | 2026-07-11 |
| SLM432 | - | 9 | 2026-06-23 |
| SLM632 | Surinam Airways | 8 | 2026-05-22 |
| SLM631 | Surinam Airways | 6 | 2026-05-21 |
| SLM481 | Surinam Airways | 3 | 2026-05-23 |
| SLM332 | - | 3 | 2026-07-12 |
| SLM9916 | - | 1 | 2026-06-14 |
| SLM482 | Surinam Airways | 1 | 2026-05-23 |
| SLM331 | - | 1 | 2026-04-15 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | SLM431 | - | Jul 13, 16:35 UTC | Jul 13, 17:15 UTC | 40m |
| 2026-07-13 | SLM431 | - | Jul 13, 14:05 UTC | Jul 13, 14:15 UTC | 10m |
| 2026-07-13 | SLM431 | - | Jul 13, 11:25 UTC | Jul 13, 13:10 UTC | 1h 45m |
| 2026-07-12 | SLM332 | - | Jul 12, 13:45 UTC | Jul 12, 14:01 UTC | 15m |
| 2026-07-11 | SLM422 | - | Jul 11, 18:20 UTC | Jul 12, 12:30 UTC | 18h 10m |
| 2026-07-11 | SLM421 | - | Jul 11, 11:50 UTC | Jul 11, 15:35 UTC | 3h 45m |
| 2026-07-10 | SLM431 | - | Jul 10, 15:45 UTC | Jul 11, 12:35 UTC | 20h 51m |
| 2026-07-10 | SLM431 | - | Jul 10, 13:00 UTC | Jul 10, 13:10 UTC | 10m |
| 2026-07-09 | SLM422 | - | Jul 9, 17:55 UTC | Jul 10, 11:55 UTC | 18h 0m |
| 2026-07-08 | SLM421 | - | Jul 8, 22:40 UTC | Jul 9, 15:35 UTC | 16h 55m |
| 2026-07-08 | SLM431 | - | Jul 8, 15:15 UTC | Jul 8, 21:50 UTC | 6h 35m |
| 2026-07-08 | SLM431 | - | Jul 8, 12:45 UTC | Jul 8, 12:55 UTC | 10m |
| 2026-07-07 | SLM422 | - | Jul 7, 17:30 UTC | Jul 8, 11:45 UTC | 18h 15m |
| 2026-07-07 | SLM421 | - | Jul 7, 11:10 UTC | Jul 7, 14:55 UTC | 3h 45m |
| 2026-07-06 | SLM421 | - | Jul 6, 15:30 UTC | Jul 7, 12:45 UTC | 21h 15m |
| 2026-07-06 | SLM431 | - | Jul 6, 10:20 UTC | Jul 6, 12:00 UTC | 1h 40m |
| 2026-07-05 | SLM431 | - | Jul 5, 13:40 UTC | Jul 6, 12:00 UTC | 22h 20m |
| 2026-07-04 | SLM422 | - | Jul 4, 17:30 UTC | Jul 5, 12:30 UTC | 19h 0m |
| 2026-07-04 | SLM421 | - | Jul 4, 11:15 UTC | Jul 4, 15:00 UTC | 3h 45m |
| 2026-07-03 | SLM421 | - | Jul 3, 15:45 UTC | Jul 4, 14:45 UTC | 23h 0m |
| 2026-07-03 | SLM431 | - | Jul 3, 13:00 UTC | Jul 3, 13:10 UTC | 10m |
| 2026-07-02 | SLM422 | - | Jul 2, 17:15 UTC | Jul 3, 11:50 UTC | 18h 35m |
| 2026-07-02 | SLM421 | - | Jul 2, 11:25 UTC | Jul 2, 15:10 UTC | 3h 45m |
| 2026-07-01 | SLM421 | - | Jul 1, 15:30 UTC | Jul 2, 14:45 UTC | 23h 15m |
| 2026-07-01 | SLM431 | - | Jul 1, 12:45 UTC | Jul 1, 12:55 UTC | 10m |
| 2026-07-01 | SLM431 | - | Jul 1, 11:40 UTC | Jul 1, 12:00 UTC | 20m |
| 2026-06-30 | SLM422 | - | Jun 30, 18:45 UTC | Jul 1, 11:00 UTC | 16h 15m |
| 2026-06-30 | SLM421 | - | Jun 30, 12:45 UTC | Jun 30, 16:25 UTC | 3h 40m |
| 2026-06-29 | SLM421 | - | Jun 29, 15:54 UTC | Jun 30, 14:30 UTC | 22h 36m |
| 2026-06-29 | SLM431 | - | Jun 29, 12:49 UTC | Jun 29, 13:04 UTC | 15m |
| 2026-06-29 | SLM431 | - | Jun 29, 11:25 UTC | Jun 29, 11:45 UTC | 20m |
| 2026-06-29 | SLM431 | - | Jun 29, 10:04 UTC | Jun 29, 10:40 UTC | 35m |
| 2026-06-27 | SLM422 | - | Jun 27, 17:59 UTC | Jun 27, 21:34 UTC | 3h 35m |
| 2026-06-27 | SLM421 | - | Jun 27, 11:39 UTC | Jun 27, 15:24 UTC | 3h 45m |
| 2026-06-26 | SLM421 | - | Jun 26, 15:29 UTC | Jun 27, 13:24 UTC | 21h 55m |
| 2026-06-26 | SLM431 | - | Jun 26, 12:59 UTC | Jun 26, 13:10 UTC | 10m |
| 2026-06-25 | SLM422 | - | Jun 25, 17:34 UTC | Jun 26, 12:10 UTC | 18h 35m |
| 2026-06-25 | SLM421 | - | Jun 25, 11:30 UTC | Jun 25, 15:10 UTC | 3h 40m |
| 2026-06-24 | SLM421 | - | Jun 24, 15:29 UTC | Jun 25, 14:44 UTC | 23h 15m |
| 2026-06-24 | SLM431 | PBM → AUA | Jun 24, 13:00 UTC | Jun 24, 13:10 UTC | 10m |
| 2026-06-23 | SLM431 | PBM → AUA | Jun 23, 17:54 UTC | Jun 24, 11:34 UTC | 17h 40m |
| 2026-06-23 | SLM421 | - | Jun 23, 01:40 UTC | Jun 23, 15:50 UTC | 14h 10m |
| 2026-06-23 | SLM432 | - | Jun 23, 00:50 UTC | Jun 23, 01:04 UTC | 15m |
| 2026-06-22 | SLM432 | - | Jun 22, 23:24 UTC | Jun 22, 23:39 UTC | 15m |
| 2026-06-22 | SLM432 | - | Jun 22, 21:30 UTC | Jun 22, 21:40 UTC | 10m |
| 2026-06-22 | SLM432 | - | Jun 22, 19:24 UTC | Jun 22, 20:49 UTC | 1h 25m |
| 2026-06-22 | SLM431 | PBM → AUA | Jun 22, 14:49 UTC | Jun 22, 17:20 UTC | 2h 30m |
| 2026-06-22 | SLM431 | PBM → AUA | Jun 22, 12:40 UTC | Jun 22, 12:49 UTC | 10m |
| 2026-06-22 | SLM431 | PBM → AUA | Jun 22, 10:00 UTC | Jun 22, 11:44 UTC | 1h 45m |
| 2026-06-20 | SLM422 | - | Jun 20, 19:15 UTC | Jun 20, 22:50 UTC | 3h 35m |
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 PZ-TCV page for operator, model, and routing details .