sensors Mode-S transponder
C84170
ICAO 24-bit transponder address
Currently assigned to ZK-TAC · CESSNA 172 Skyhawk
- Hex
- C84170
- Octal
- 62040560
- Decimal
- 13,123,952
- Tail
- ZK-TAC
- Type
- C172
- Flights observed
- 44
- Distinct callsigns
- 1
- Country
- -
- Last broadcast
- 18h ago
Last known position
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| ZKTAC | - | 44 | 2026-05-20 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-20 | ZKTAC | - | May 20, 04:15 UTC | May 20, 04:50 UTC | 36m |
| 2026-05-19 | ZKTAC | - | May 19, 02:20 UTC | May 19, 03:10 UTC | 50m |
| 2026-05-19 | ZKTAC | - | May 19, 01:10 UTC | May 19, 01:30 UTC | 20m |
| 2026-05-18 | ZKTAC | - | May 18, 03:55 UTC | May 18, 04:40 UTC | 45m |
| 2026-05-18 | ZKTAC | - | May 18, 02:00 UTC | May 18, 02:25 UTC | 25m |
| 2026-05-17 | ZKTAC | - | May 17, 22:45 UTC | May 17, 23:10 UTC | 25m |
| 2026-05-17 | ZKTAC | - | May 17, 04:45 UTC | May 17, 04:55 UTC | 10m |
| 2026-05-17 | ZKTAC | - | May 17, 01:50 UTC | May 17, 02:20 UTC | 30m |
| 2026-05-17 | ZKTAC | - | May 17, 00:30 UTC | May 17, 00:50 UTC | 20m |
| 2026-05-16 | ZKTAC | - | May 16, 21:30 UTC | May 16, 22:45 UTC | 1h 15m |
| 2026-05-16 | ZKTAC | - | May 16, 04:25 UTC | May 16, 05:00 UTC | 35m |
| 2026-05-16 | ZKTAC | - | May 16, 02:30 UTC | May 16, 03:30 UTC | 1h 0m |
| 2026-05-15 | ZKTAC | - | May 15, 22:50 UTC | May 15, 23:40 UTC | 50m |
| 2026-05-15 | ZKTAC | - | May 15, 03:15 UTC | May 15, 04:40 UTC | 1h 25m |
| 2026-05-14 | ZKTAC | - | May 14, 23:40 UTC | May 15, 00:00 UTC | 20m |
| 2026-05-14 | ZKTAC | - | May 14, 03:15 UTC | May 14, 04:51 UTC | 1h 35m |
| 2026-05-13 | ZKTAC | - | May 13, 22:50 UTC | May 13, 23:15 UTC | 25m |
| 2026-05-10 | ZKTAC | - | May 10, 01:55 UTC | May 10, 02:14 UTC | 20m |
| 2026-05-09 | ZKTAC | - | May 9, 22:45 UTC | May 9, 23:00 UTC | 15m |
| 2026-05-09 | ZKTAC | - | May 9, 21:14 UTC | May 9, 21:34 UTC | 20m |
| 2026-05-08 | ZKTAC | - | May 8, 23:30 UTC | May 8, 23:50 UTC | 20m |
| 2026-05-07 | ZKTAC | - | May 7, 23:59 UTC | May 8, 00:25 UTC | 25m |
| 2026-05-07 | ZKTAC | - | May 7, 00:30 UTC | May 7, 01:00 UTC | 30m |
| 2026-05-01 | ZKTAC | - | May 1, 23:15 UTC | May 2, 00:05 UTC | 50m |
| 2026-04-30 | ZKTAC | - | Apr 30, 22:55 UTC | Apr 30, 23:30 UTC | 35m |
| 2026-04-30 | ZKTAC | - | Apr 30, 03:10 UTC | Apr 30, 04:15 UTC | 1h 5m |
| 2026-04-30 | ZKTAC | - | Apr 30, 01:15 UTC | Apr 30, 01:30 UTC | 15m |
| 2026-04-29 | ZKTAC | - | Apr 29, 22:50 UTC | Apr 29, 23:55 UTC | 1h 4m |
| 2026-04-29 | ZKTAC | - | Apr 29, 03:49 UTC | Apr 29, 04:25 UTC | 35m |
| 2026-04-29 | ZKTAC | - | Apr 29, 01:40 UTC | Apr 29, 02:35 UTC | 55m |
| 2026-04-28 | ZKTAC | - | Apr 28, 21:35 UTC | Apr 28, 22:10 UTC | 35m |
| 2026-04-27 | ZKTAC | - | Apr 27, 22:35 UTC | Apr 27, 22:55 UTC | 20m |
| 2026-04-26 | ZKTAC | - | Apr 26, 02:10 UTC | Apr 26, 02:35 UTC | 25m |
| 2026-04-25 | ZKTAC | - | Apr 25, 22:30 UTC | Apr 25, 22:40 UTC | 10m |
| 2026-04-23 | ZKTAC | - | Apr 23, 02:40 UTC | Apr 23, 02:55 UTC | 15m |
| 2026-04-20 | ZKTAC | - | Apr 20, 03:15 UTC | Apr 20, 04:10 UTC | 55m |
| 2026-04-17 | ZKTAC | - | Apr 17, 03:40 UTC | Apr 17, 04:45 UTC | 1h 6m |
| 2026-04-17 | ZKTAC | - | Apr 17, 01:20 UTC | Apr 17, 01:50 UTC | 30m |
| 2026-04-17 | ZKTAC | - | Apr 17, 01:04 UTC | Apr 17, 01:15 UTC | 10m |
| 2026-04-16 | ZKTAC | - | Apr 16, 04:04 UTC | Apr 16, 04:54 UTC | 50m |
| 2026-04-15 | ZKTAC | - | Apr 15, 23:10 UTC | Apr 15, 23:40 UTC | 30m |
| 2026-04-15 | ZKTAC | - | Apr 15, 22:40 UTC | Apr 15, 23:00 UTC | 20m |
| 2026-04-15 | ZKTAC | - | Apr 15, 00:05 UTC | Apr 15, 00:50 UTC | 45m |
| 2026-04-13 | ZKTAC | - | Apr 13, 21:35 UTC | Apr 13, 22:50 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 ZK-TAC page for operator, model, and routing details .