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
- 104
- Distinct callsigns
- 1
- Country
- -
- Last broadcast
- 1d ago
Last known position
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| ZKTAC | - | 103 | 2026-07-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | ZKTAC | - | Jul 13, 01:15 UTC | Jul 13, 01:50 UTC | 35m |
| 2026-07-12 | ZKTAC | - | Jul 12, 23:20 UTC | Jul 13, 00:05 UTC | 45m |
| 2026-07-12 | ZKTAC | - | Jul 12, 03:25 UTC | Jul 12, 04:05 UTC | 40m |
| 2026-07-12 | ZKTAC | - | Jul 12, 00:10 UTC | Jul 12, 01:05 UTC | 55m |
| 2026-07-11 | - | - | Jul 11, 06:20 UTC | Jul 11, 06:30 UTC | 10m |
| 2026-07-11 | ZKTAC | - | Jul 11, 03:55 UTC | Jul 11, 04:10 UTC | 15m |
| 2026-07-11 | ZKTAC | - | Jul 11, 02:30 UTC | Jul 11, 02:50 UTC | 20m |
| 2026-07-11 | ZKTAC | - | Jul 11, 00:30 UTC | Jul 11, 01:55 UTC | 1h 25m |
| 2026-07-08 | ZKTAC | - | Jul 8, 01:00 UTC | Jul 8, 02:00 UTC | 1h 0m |
| 2026-07-07 | ZKTAC | TRG → TRG | Jul 7, 23:05 UTC | Jul 7, 23:45 UTC | 40m |
| 2026-07-03 | ZKTAC | - | Jul 3, 23:15 UTC | Jul 3, 23:40 UTC | 25m |
| 2026-07-03 | ZKTAC | - | Jul 3, 03:25 UTC | Jul 3, 04:15 UTC | 50m |
| 2026-07-02 | ZKTAC | - | Jul 2, 22:10 UTC | Jul 2, 22:50 UTC | 40m |
| 2026-07-02 | ZKTAC | TRG → TRG | Jul 2, 06:20 UTC | Jul 2, 06:51 UTC | 31m |
| 2026-07-02 | ZKTAC | - | Jul 2, 03:10 UTC | Jul 2, 04:10 UTC | 1h 0m |
| 2026-07-01 | ZKTAC | - | Jul 1, 02:35 UTC | Jul 1, 04:20 UTC | 1h 45m |
| 2026-06-27 | ZKTAC | - | Jun 27, 04:24 UTC | Jun 27, 04:49 UTC | 25m |
| 2026-06-27 | ZKTAC | - | Jun 27, 03:09 UTC | Jun 27, 04:15 UTC | 1h 5m |
| 2026-06-26 | ZKTAC | TRG → TRG | Jun 26, 23:55 UTC | Jun 27, 00:10 UTC | 15m |
| 2026-06-26 | ZKTAC | TRG → TRG | Jun 26, 03:00 UTC | Jun 26, 03:15 UTC | 15m |
| 2026-06-25 | ZKTAC | WHK → TRG | Jun 25, 00:24 UTC | Jun 25, 00:49 UTC | 25m |
| 2026-06-23 | ZKTAC | - | Jun 23, 00:39 UTC | Jun 23, 02:20 UTC | 1h 40m |
| 2026-06-22 | ZKTAC | - | Jun 22, 23:39 UTC | Jun 23, 00:00 UTC | 20m |
| 2026-06-22 | ZKTAC | - | Jun 22, 01:05 UTC | Jun 22, 01:15 UTC | 10m |
| 2026-06-21 | ZKTAC | - | Jun 21, 23:05 UTC | Jun 21, 23:40 UTC | 35m |
| 2026-06-21 | ZKTAC | - | Jun 21, 20:50 UTC | Jun 21, 21:39 UTC | 50m |
| 2026-06-20 | ZKTAC | - | Jun 20, 00:09 UTC | Jun 20, 00:44 UTC | 35m |
| 2026-06-19 | ZKTAC | - | Jun 19, 02:54 UTC | Jun 19, 04:19 UTC | 1h 25m |
| 2026-06-18 | ZKTAC | - | Jun 18, 04:00 UTC | Jun 18, 04:35 UTC | 35m |
| 2026-06-18 | ZKTAC | - | Jun 18, 02:05 UTC | Jun 18, 02:35 UTC | 30m |
| 2026-06-17 | ZKTAC | - | Jun 17, 23:15 UTC | Jun 17, 23:40 UTC | 25m |
| 2026-06-17 | ZKTAC | - | Jun 17, 21:50 UTC | Jun 17, 22:30 UTC | 40m |
| 2026-06-17 | ZKTAC | - | Jun 17, 00:35 UTC | Jun 17, 01:15 UTC | 40m |
| 2026-06-16 | ZKTAC | TRG → TRG | Jun 16, 22:45 UTC | Jun 16, 23:35 UTC | 50m |
| 2026-06-16 | ZKTAC | - | Jun 16, 02:15 UTC | Jun 16, 03:45 UTC | 1h 30m |
| 2026-06-16 | ZKTAC | - | Jun 16, 00:00 UTC | Jun 16, 01:00 UTC | 1h 0m |
| 2026-06-15 | ZKTAC | - | Jun 15, 05:25 UTC | Jun 15, 06:10 UTC | 45m |
| 2026-06-14 | ZKTAC | - | Jun 14, 03:45 UTC | Jun 14, 03:55 UTC | 10m |
| 2026-06-14 | ZKTAC | - | Jun 14, 01:40 UTC | Jun 14, 02:00 UTC | 20m |
| 2026-06-13 | ZKTAC | - | Jun 13, 22:00 UTC | Jun 13, 22:40 UTC | 40m |
| 2026-06-13 | ZKTAC | - | Jun 13, 00:45 UTC | Jun 13, 01:10 UTC | 25m |
| 2026-06-10 | ZKTAC | - | Jun 10, 06:25 UTC | Jun 10, 07:05 UTC | 40m |
| 2026-06-08 | ZKTAC | - | Jun 8, 01:50 UTC | Jun 8, 02:30 UTC | 40m |
| 2026-06-07 | ZKTAC | - | Jun 7, 00:49 UTC | Jun 7, 01:45 UTC | 55m |
| 2026-06-06 | ZKTAC | - | Jun 6, 23:00 UTC | Jun 6, 23:44 UTC | 45m |
| 2026-06-06 | ZKTAC | - | Jun 6, 02:15 UTC | Jun 6, 03:10 UTC | 55m |
| 2026-05-30 | ZKTAC | - | May 30, 00:15 UTC | May 30, 00:40 UTC | 25m |
| 2026-05-28 | ZKTAC | - | May 28, 02:30 UTC | May 28, 03:00 UTC | 30m |
| 2026-05-28 | ZKTAC | - | May 28, 00:40 UTC | May 28, 01:10 UTC | 30m |
| 2026-05-27 | ZKTAC | - | May 27, 22:40 UTC | May 27, 22:55 UTC | 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 .