sensors Mode-S transponder
7802FE
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-2423 · BOEING 747-400
- Hex
- 7802FE
- Octal
- 36001376
- Decimal
- 7,865,086
- Country
- CN
- Tail
- B-2423
- Type
- B744
- Flights observed
- 97
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 7802FE 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSS125 | - | 26 | 2026-05-24 |
| CSS126 | - | 15 | 2026-05-24 |
| CSS101 | SF Airlines | 11 | 2026-05-20 |
| CSS102 | SF Airlines | 10 | 2026-05-20 |
| CSS181 | SF Airlines | 8 | 2026-05-06 |
| CSS118 | - | 8 | 2026-05-22 |
| CSS182 | SF Airlines | 7 | 2026-05-06 |
| CSS117 | - | 5 | 2026-05-21 |
| CSS105 | - | 3 | 2026-04-16 |
| CSS106 | - | 2 | 2026-04-16 |
| CSS120 | SF Airlines | 1 | 2026-05-18 |
| CSS111 | SF Airlines | 1 | 2026-05-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-24 | CSS126 | BUD → HKG | May 24, 19:30 UTC | May 25, 10:10 UTC | 14h 40m |
| 2026-05-24 | CSS125 | - | May 24, 09:55 UTC | May 24, 16:00 UTC | 6h 5m |
| 2026-05-23 | CSS125 | - | May 23, 17:45 UTC | May 24, 16:00 UTC | 22h 15m |
| 2026-05-23 | CSS125 | - | May 23, 15:50 UTC | May 24, 15:30 UTC | 23h 40m |
| 2026-05-23 | CSS126 | - | May 23, 13:35 UTC | May 24, 13:30 UTC | 23h 55m |
| 2026-05-23 | CSS126 | - | May 23, 12:45 UTC | May 24, 10:40 UTC | 21h 55m |
| 2026-05-23 | CSS125 | - | May 23, 03:25 UTC | May 23, 09:10 UTC | 5h 45m |
| 2026-05-22 | CSS125 | - | May 22, 12:40 UTC | May 23, 09:10 UTC | 20h 29m |
| 2026-05-22 | CSS125 | - | May 22, 09:35 UTC | May 23, 09:10 UTC | 23h 34m |
| 2026-05-22 | CSS118 | - | May 22, 07:35 UTC | May 23, 05:05 UTC | 21h 29m |
| 2026-05-22 | CSS118 | - | May 22, 07:10 UTC | May 23, 05:05 UTC | 21h 54m |
| 2026-05-21 | CSS117 | - | May 21, 19:45 UTC | May 22, 02:50 UTC | 7h 5m |
| 2026-05-20 | CSS102 | FRA → LAX | May 20, 14:40 UTC | May 20, 20:30 UTC | 5h 50m |
| 2026-05-20 | CSS101 | HGH → LAX | May 20, 04:05 UTC | May 20, 10:30 UTC | 6h 26m |
| 2026-05-18 | CSS120 | ALA → EHU | May 18, 01:10 UTC | May 18, 03:35 UTC | 2h 25m |
| 2026-05-17 | CSS111 | EHU → LGG | May 17, 15:15 UTC | May 17, 21:55 UTC | 6h 40m |
| 2026-05-16 | CSS102 | FRA → LAX | May 16, 19:35 UTC | May 17, 18:10 UTC | 22h 35m |
| 2026-05-16 | CSS102 | FRA → LAX | May 16, 18:35 UTC | May 17, 16:10 UTC | 21h 35m |
| 2026-05-16 | CSS101 | HGH → LAX | May 16, 08:11 UTC | May 16, 14:35 UTC | 6h 25m |
| 2026-05-15 | CSS118 | - | May 15, 09:35 UTC | May 16, 08:55 UTC | 23h 20m |
| 2026-05-15 | CSS118 | - | May 15, 06:50 UTC | May 15, 13:20 UTC | 6h 30m |
| 2026-05-14 | CSS117 | - | May 14, 19:40 UTC | May 15, 02:30 UTC | 6h 50m |
| 2026-05-12 | CSS102 | FRA → LAX | May 12, 16:10 UTC | May 12, 18:25 UTC | 2h 15m |
| 2026-05-12 | CSS101 | HGH → LAX | May 12, 06:00 UTC | May 12, 12:40 UTC | 6h 40m |
| 2026-05-10 | CSS126 | - | May 10, 19:19 UTC | May 10, 21:25 UTC | 2h 5m |
| 2026-05-10 | CSS125 | - | May 10, 09:30 UTC | May 10, 15:39 UTC | 6h 10m |
| 2026-05-09 | CSS125 | - | May 9, 16:10 UTC | May 10, 15:29 UTC | 23h 20m |
| 2026-05-09 | CSS126 | - | May 9, 11:35 UTC | May 10, 10:19 UTC | 22h 45m |
| 2026-05-09 | CSS126 | - | May 9, 11:10 UTC | May 10, 09:30 UTC | 22h 20m |
| 2026-05-09 | CSS125 | - | May 9, 01:25 UTC | May 9, 07:55 UTC | 6h 30m |
| 2026-05-08 | CSS125 | - | May 8, 12:25 UTC | May 9, 07:55 UTC | 19h 30m |
| 2026-05-08 | CSS125 | - | May 8, 09:34 UTC | May 9, 07:55 UTC | 22h 20m |
| 2026-05-08 | CSS118 | - | May 8, 07:34 UTC | May 9, 07:30 UTC | 23h 55m |
| 2026-05-08 | CSS118 | - | May 8, 06:59 UTC | May 9, 05:15 UTC | 22h 15m |
| 2026-05-07 | CSS117 | - | May 7, 19:40 UTC | May 8, 02:59 UTC | 7h 19m |
| 2026-05-07 | CSS117 | - | May 7, 02:50 UTC | May 7, 20:35 UTC | 17h 45m |
| 2026-05-06 | CSS182 | JFK → ANC | May 6, 19:25 UTC | May 7, 03:05 UTC | 7h 40m |
| 2026-05-06 | CSS182 | JFK → ANC | May 6, 10:30 UTC | May 6, 17:15 UTC | 6h 45m |
| 2026-05-06 | CSS181 | ANC → JFK | May 6, 02:45 UTC | May 6, 08:55 UTC | 6h 10m |
| 2026-05-05 | CSS181 | ANC → JFK | May 5, 17:25 UTC | May 6, 00:25 UTC | 7h 0m |
| 2026-05-03 | CSS126 | - | May 3, 19:15 UTC | May 3, 22:15 UTC | 3h 0m |
| 2026-05-03 | CSS125 | - | May 3, 09:40 UTC | May 3, 16:09 UTC | 6h 30m |
| 2026-05-02 | CSS125 | - | May 2, 15:55 UTC | May 3, 15:30 UTC | 23h 34m |
| 2026-05-02 | CSS125 | - | May 2, 14:05 UTC | May 3, 13:30 UTC | 23h 24m |
| 2026-05-02 | CSS126 | - | May 2, 11:35 UTC | May 3, 10:35 UTC | 22h 59m |
| 2026-05-02 | CSS126 | - | May 2, 10:55 UTC | May 2, 16:40 UTC | 5h 45m |
| 2026-05-01 | CSS125 | - | May 1, 12:55 UTC | May 2, 07:05 UTC | 18h 10m |
| 2026-05-01 | CSS125 | - | May 1, 09:35 UTC | May 2, 07:05 UTC | 21h 30m |
| 2026-05-01 | CSS118 | - | May 1, 07:35 UTC | May 2, 07:05 UTC | 23h 30m |
| 2026-05-01 | CSS118 | - | May 1, 07:00 UTC | May 2, 04:35 UTC | 21h 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 B-2423 page for operator, model, and routing details .