sensors Mode-S transponder
78029E
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-2425 · BOEING 747-400
- Hex
- 78029E
- Octal
- 36001236
- Decimal
- 7,864,990
- Country
- CN
- Tail
- B-2425
- Type
- B744
- Flights observed
- 223
- Distinct callsigns
- 13
- Country
- CN
- Last broadcast
- Jul 21, 23:25 UTC
Last known position
Country allocation
The ICAO 24-bit address 78029E falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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 13 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSS181 | SF Airlines | 34 | 2026-07-20 |
| CSS102 | - | 34 | 2026-07-12 |
| CSS101 | - | 31 | 2026-07-12 |
| CSS117 | - | 26 | 2026-07-17 |
| CSS118 | - | 22 | 2026-07-18 |
| CSS182 | SF Airlines | 21 | 2026-07-21 |
| CSS111 | SF Airlines | 20 | 2026-07-16 |
| CSS120 | - | 18 | 2026-07-17 |
| CSS125 | - | 8 | 2026-06-20 |
| CSS126 | - | 4 | 2026-06-07 |
| CSS196 | - | 3 | 2026-06-30 |
| CSS3031 | - | 1 | 2026-07-21 |
| CSS164 | - | 1 | 2026-07-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-21 | CSS3031 | - | Jul 21, 07:30 UTC | Jul 21, 23:20 UTC | 15h 50m |
| 2026-07-21 | CSS182 | JFK → ANC | Jul 21, 00:10 UTC | Jul 21, 23:20 UTC | 23h 10m |
| 2026-07-20 | CSS182 | JFK → ANC | Jul 20, 15:20 UTC | Jul 20, 22:30 UTC | 7h 10m |
| 2026-07-20 | CSS181 | ANC → JFK | Jul 20, 06:50 UTC | Jul 20, 13:20 UTC | 6h 30m |
| 2026-07-19 | CSS181 | - | Jul 19, 19:05 UTC | Jul 20, 02:30 UTC | 7h 25m |
| 2026-07-18 | CSS118 | - | Jul 18, 09:10 UTC | Jul 18, 15:35 UTC | 6h 25m |
| 2026-07-17 | CSS117 | - | Jul 17, 23:20 UTC | Jul 18, 06:05 UTC | 6h 46m |
| 2026-07-17 | CSS120 | - | Jul 17, 01:35 UTC | Jul 18, 00:00 UTC | 22h 25m |
| 2026-07-17 | CSS120 | - | Jul 17, 00:35 UTC | Jul 17, 23:30 UTC | 22h 55m |
| 2026-07-16 | CSS111 | EHU → LGG | Jul 16, 14:50 UTC | Jul 16, 21:10 UTC | 6h 20m |
| 2026-07-15 | CSS111 | EHU → LGG | Jul 15, 22:00 UTC | Jul 16, 21:10 UTC | 23h 10m |
| 2026-07-15 | CSS118 | - | Jul 15, 16:05 UTC | Jul 15, 22:40 UTC | 6h 35m |
| 2026-07-15 | CSS117 | - | Jul 15, 06:35 UTC | Jul 15, 13:15 UTC | 6h 40m |
| 2026-07-14 | CSS117 | - | Jul 14, 11:35 UTC | Jul 15, 11:30 UTC | 23h 54m |
| 2026-07-14 | CSS182 | - | Jul 14, 05:15 UTC | Jul 14, 13:05 UTC | 7h 50m |
| 2026-07-13 | CSS182 | JFK → ANC | Jul 13, 19:40 UTC | Jul 14, 02:45 UTC | 7h 5m |
| 2026-07-13 | CSS181 | - | Jul 13, 10:45 UTC | Jul 13, 17:15 UTC | 6h 30m |
| 2026-07-12 | CSS181 | - | Jul 12, 16:15 UTC | Jul 13, 09:15 UTC | 17h 0m |
| 2026-07-12 | CSS102 | FRA → ANC | Jul 12, 10:55 UTC | Jul 13, 09:15 UTC | 22h 20m |
| 2026-07-12 | CSS101 | - | Jul 12, 01:25 UTC | Jul 12, 07:45 UTC | 6h 20m |
| 2026-07-11 | CSS101 | - | Jul 11, 09:35 UTC | Jul 12, 07:45 UTC | 22h 10m |
| 2026-07-11 | CSS118 | - | Jul 11, 08:25 UTC | Jul 12, 07:31 UTC | 23h 5m |
| 2026-07-10 | CSS117 | - | Jul 10, 23:30 UTC | Jul 11, 06:05 UTC | 6h 35m |
| 2026-07-10 | CSS120 | - | Jul 10, 01:35 UTC | Jul 11, 00:10 UTC | 22h 35m |
| 2026-07-10 | CSS120 | - | Jul 10, 00:15 UTC | Jul 10, 23:30 UTC | 23h 15m |
| 2026-07-09 | CSS111 | - | Jul 9, 15:25 UTC | Jul 9, 21:35 UTC | 6h 10m |
| 2026-07-08 | CSS111 | - | Jul 8, 17:35 UTC | Jul 9, 15:50 UTC | 22h 15m |
| 2026-07-08 | CSS102 | - | Jul 8, 15:35 UTC | Jul 9, 15:30 UTC | 23h 55m |
| 2026-07-08 | CSS101 | - | Jul 8, 05:20 UTC | Jul 8, 11:30 UTC | 6h 10m |
| 2026-07-07 | CSS101 | - | Jul 7, 13:35 UTC | Jul 8, 11:30 UTC | 21h 55m |
| 2026-07-07 | CSS101 | - | Jul 7, 12:30 UTC | Jul 8, 11:30 UTC | 23h 0m |
| 2026-07-07 | CSS182 | - | Jul 7, 06:20 UTC | Jul 8, 05:30 UTC | 23h 10m |
| 2026-07-06 | CSS182 | JFK → ANC | Jul 6, 19:20 UTC | Jul 7, 02:10 UTC | 6h 50m |
| 2026-07-06 | CSS181 | - | Jul 6, 10:25 UTC | Jul 6, 16:45 UTC | 6h 20m |
| 2026-07-06 | CSS181 | - | Jul 6, 01:30 UTC | Jul 6, 09:00 UTC | 7h 30m |
| 2026-07-05 | CSS181 | - | Jul 5, 07:35 UTC | Jul 6, 07:30 UTC | 23h 55m |
| 2026-07-05 | CSS164 | - | Jul 5, 06:05 UTC | Jul 6, 03:00 UTC | 20h 55m |
| 2026-07-04 | CSS118 | EMA → DEL | Jul 4, 08:15 UTC | Jul 5, 03:20 UTC | 19h 5m |
| 2026-07-03 | CSS117 | - | Jul 3, 22:35 UTC | Jul 4, 05:40 UTC | 7h 5m |
| 2026-07-03 | CSS117 | - | Jul 3, 03:35 UTC | Jul 3, 23:20 UTC | 19h 45m |
| 2026-07-03 | CSS120 | - | Jul 3, 01:50 UTC | Jul 3, 23:20 UTC | 21h 30m |
| 2026-07-02 | CSS111 | - | Jul 2, 15:45 UTC | Jul 2, 22:25 UTC | 6h 40m |
| 2026-07-01 | CSS102 | - | Jul 1, 22:45 UTC | Jul 2, 16:05 UTC | 17h 20m |
| 2026-07-01 | CSS102 | - | Jul 1, 19:35 UTC | Jul 2, 16:05 UTC | 20h 30m |
| 2026-07-01 | CSS102 | - | Jul 1, 17:35 UTC | Jul 2, 16:05 UTC | 22h 30m |
| 2026-06-30 | CSS101 | - | Jun 30, 19:30 UTC | Jul 1, 13:15 UTC | 17h 45m |
| 2026-06-30 | CSS101 | - | Jun 30, 11:35 UTC | Jul 1, 11:30 UTC | 23h 55m |
| 2026-06-30 | CSS196 | - | Jun 30, 09:35 UTC | Jul 1, 09:30 UTC | 23h 55m |
| 2026-06-30 | CSS196 | - | Jun 30, 09:20 UTC | Jul 1, 07:25 UTC | 22h 5m |
| 2026-06-30 | CSS196 | JFK → SEA | Jun 30, 01:09 UTC | Jun 30, 06:30 UTC | 5h 21m |
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 B-2425 page for operator, model, and routing details .