sensors Mode-S transponder
7802FD
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-2422 · BOEING 747-400
- Hex
- 7802FD
- Octal
- 36001375
- Decimal
- 7,865,085
- Country
- CN
- Tail
- B-2422
- Type
- B744
- Flights observed
- 108
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 40m ago
Last known position
Country allocation
The ICAO 24-bit address 7802FD 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSS381 | SF Airlines | 19 | 2026-06-01 |
| CSS186 | SF Airlines | 12 | 2026-06-01 |
| CSS335 | SF Airlines | 8 | 2026-05-30 |
| CSS332 | SF Airlines | 8 | 2026-05-24 |
| CSS382 | SF Airlines | 7 | 2026-05-30 |
| CSS185 | SF Airlines | 6 | 2026-06-03 |
| CSS181 | SF Airlines | 6 | 2026-04-15 |
| CSS111 | SF Airlines | 6 | 2026-04-23 |
| CSS396 | SF Airlines | 5 | 2026-05-28 |
| CSS165 | SF Airlines | 5 | 2026-05-23 |
| CSS182 | SF Airlines | 4 | 2026-04-15 |
| CSS140 | - | 4 | 2026-05-14 |
| CSS139 | - | 4 | 2026-05-13 |
| CSS120 | SF Airlines | 4 | 2026-04-23 |
| CSS170 | - | 2 | 2026-05-30 |
| CSS126 | - | 2 | 2026-04-13 |
| CSS106 | - | 2 | 2026-04-18 |
| CSS336 | - | 1 | 2026-05-10 |
| CSS105 | - | 1 | 2026-04-18 |
| CSS104 | - | 1 | 2026-04-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-03 | CSS185 | LGG → LGG | Jun 3, 02:35 UTC | Jun 3, 03:15 UTC | 40m |
| 2026-06-02 | CSS185 | LGG → LGG | Jun 2, 16:45 UTC | Jun 3, 00:05 UTC | 7h 20m |
| 2026-06-01 | CSS186 | LGG → LGG | Jun 1, 17:20 UTC | Jun 2, 17:00 UTC | 23h 40m |
| 2026-06-01 | CSS186 | LGG → LGG | Jun 1, 13:10 UTC | Jun 1, 18:50 UTC | 5h 40m |
| 2026-06-01 | CSS381 | HGH → LAX | Jun 1, 00:10 UTC | Jun 1, 10:05 UTC | 9h 55m |
| 2026-05-31 | CSS381 | HGH → LAX | May 31, 19:20 UTC | May 31, 19:30 UTC | 10m |
| 2026-05-30 | CSS170 | - | May 30, 16:05 UTC | May 31, 09:30 UTC | 17h 25m |
| 2026-05-30 | CSS170 | - | May 30, 09:55 UTC | May 31, 09:15 UTC | 23h 20m |
| 2026-05-30 | CSS335 | SZX → MAA | May 30, 07:40 UTC | May 30, 17:45 UTC | 10h 5m |
| 2026-05-30 | CSS382 | LAX → SZX | May 30, 02:30 UTC | May 30, 02:45 UTC | 15m |
| 2026-05-29 | CSS382 | LAX → SZX | May 29, 12:15 UTC | May 29, 17:55 UTC | 5h 40m |
| 2026-05-28 | CSS381 | HGH → LAX | May 28, 23:00 UTC | May 29, 09:10 UTC | 10h 10m |
| 2026-05-28 | CSS381 | HGH → LAX | May 28, 18:15 UTC | May 28, 18:30 UTC | 15m |
| 2026-05-28 | CSS396 | JFK → ANC | May 28, 06:15 UTC | May 28, 06:25 UTC | 10m |
| 2026-05-27 | CSS396 | JFK → ANC | May 27, 19:55 UTC | May 28, 03:30 UTC | 7h 35m |
| 2026-05-27 | CSS396 | JFK → ANC | May 27, 11:10 UTC | May 27, 18:15 UTC | 7h 5m |
| 2026-05-27 | CSS185 | LGG → LGG | May 27, 03:09 UTC | May 27, 09:25 UTC | 6h 16m |
| 2026-05-26 | CSS185 | LGG → LGG | May 26, 05:20 UTC | May 27, 00:44 UTC | 19h 25m |
| 2026-05-26 | CSS186 | LGG → LGG | May 26, 03:45 UTC | May 27, 00:44 UTC | 21h 0m |
| 2026-05-25 | CSS186 | LGG → LGG | May 25, 17:35 UTC | May 26, 05:25 UTC | 11h 50m |
| 2026-05-25 | CSS381 | HGH → LAX | May 25, 04:50 UTC | May 25, 15:25 UTC | 10h 35m |
| 2026-05-24 | CSS332 | DEL → SZX | May 24, 19:25 UTC | May 24, 19:40 UTC | 15m |
| 2026-05-24 | CSS332 | DEL → SZX | May 24, 15:05 UTC | May 24, 17:30 UTC | 2h 25m |
| 2026-05-23 | CSS165 | NQZ → NQZ | May 23, 18:55 UTC | May 24, 12:10 UTC | 17h 15m |
| 2026-05-23 | CSS335 | SZX → MAA | May 23, 16:40 UTC | May 23, 16:50 UTC | 10m |
| 2026-05-22 | CSS382 | LAX → SZX | May 22, 22:50 UTC | May 23, 04:20 UTC | 5h 29m |
| 2026-05-22 | CSS381 | HGH → LAX | May 22, 09:25 UTC | May 22, 19:40 UTC | 10h 15m |
| 2026-05-21 | CSS381 | HGH → LAX | May 21, 19:20 UTC | May 21, 19:30 UTC | 10m |
| 2026-05-18 | CSS382 | LAX → SZX | May 18, 13:25 UTC | May 19, 01:40 UTC | 12h 14m |
| 2026-05-17 | CSS381 | HGH → LAX | May 17, 19:05 UTC | May 18, 10:25 UTC | 15h 20m |
| 2026-05-16 | CSS335 | SZX → MAA | May 16, 23:15 UTC | May 17, 05:45 UTC | 6h 30m |
| 2026-05-16 | CSS335 | SZX → MAA | May 16, 20:40 UTC | May 16, 20:55 UTC | 15m |
| 2026-05-16 | CSS332 | - | May 16, 18:00 UTC | May 16, 18:10 UTC | 10m |
| 2026-05-16 | CSS332 | - | May 16, 13:46 UTC | May 16, 15:55 UTC | 2h 10m |
| 2026-05-15 | CSS186 | LGG → LGG | May 15, 15:30 UTC | May 16, 10:25 UTC | 18h 56m |
| 2026-05-15 | CSS186 | LGG → LGG | May 15, 13:20 UTC | May 16, 10:25 UTC | 21h 5m |
| 2026-05-15 | CSS186 | LGG → LGG | May 15, 12:25 UTC | May 16, 10:25 UTC | 22h 0m |
| 2026-05-14 | CSS381 | HGH → LAX | May 14, 23:35 UTC | May 15, 09:50 UTC | 10h 15m |
| 2026-05-14 | CSS381 | HGH → LAX | May 14, 18:35 UTC | May 14, 18:50 UTC | 15m |
| 2026-05-14 | CSS140 | - | May 14, 10:45 UTC | May 14, 11:01 UTC | 15m |
| 2026-05-13 | CSS140 | - | May 13, 21:40 UTC | May 14, 09:40 UTC | 12h 0m |
| 2026-05-13 | CSS139 | - | May 13, 17:10 UTC | May 13, 17:20 UTC | 10m |
| 2026-05-13 | CSS139 | - | May 13, 14:25 UTC | May 13, 14:35 UTC | 10m |
| 2026-05-13 | CSS140 | - | May 13, 06:05 UTC | May 13, 06:30 UTC | 25m |
| 2026-05-12 | CSS140 | - | May 12, 21:20 UTC | May 13, 05:30 UTC | 8h 10m |
| 2026-05-12 | CSS139 | - | May 12, 16:50 UTC | May 12, 17:05 UTC | 15m |
| 2026-05-12 | CSS139 | - | May 12, 14:05 UTC | May 12, 14:15 UTC | 10m |
| 2026-05-11 | CSS382 | LAX → SZX | May 11, 13:25 UTC | May 11, 18:55 UTC | 5h 31m |
| 2026-05-10 | CSS381 | HGH → LAX | May 10, 23:29 UTC | May 11, 09:50 UTC | 10h 20m |
| 2026-05-10 | CSS381 | HGH → LAX | May 10, 19:05 UTC | May 10, 19:15 UTC | 10m |
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-2422 page for operator, model, and routing details .