sensors Mode-S transponder
782377
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-228C · BOEING 777-200LR
- Hex
- 782377
- Octal
- 36021567
- Decimal
- 7,873,399
- Country
- CN
- Tail
- B-228C
- Type
- B77L
- Flights observed
- 190
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address 782377 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 |
|---|---|---|---|
| CKK205 | - | 21 | 2026-07-15 |
| CKK206 | - | 20 | 2026-07-16 |
| CKK225 | China Cargo Airlines | 15 | 2026-07-08 |
| CKK215 | China Cargo Airlines | 11 | 2026-06-07 |
| CKK223 | - | 7 | 2026-07-17 |
| CKK221 | China Cargo Airlines | 7 | 2026-06-30 |
| CKK274 | - | 6 | 2026-06-04 |
| CKK273 | - | 6 | 2026-06-03 |
| CKK226 | - | 6 | 2026-07-08 |
| CKK222 | - | 6 | 2026-07-01 |
| CKK216 | China Cargo Airlines | 6 | 2026-06-08 |
| CKK227 | China Cargo Airlines | 5 | 2026-07-06 |
| CKK224 | China Cargo Airlines | 5 | 2026-07-05 |
| CKK209 | - | 5 | 2026-07-12 |
| CKK263 | China Cargo Airlines | 4 | 2026-06-05 |
| CKK261 | - | 4 | 2026-07-02 |
| CKK228 | - | 4 | 2026-07-06 |
| CKK210 | - | 4 | 2026-07-13 |
| CKK626 | China Cargo Airlines | 3 | 2026-06-07 |
| CKK621 | - | 3 | 2026-06-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CKK223 | - | Jul 17, 20:29 UTC | Jul 17, 22:15 UTC | 1h 45m |
| 2026-07-16 | CKK223 | - | Jul 16, 22:25 UTC | Jul 17, 21:44 UTC | 23h 20m |
| 2026-07-16 | CKK206 | - | Jul 16, 16:49 UTC | Jul 16, 23:05 UTC | 6h 15m |
| 2026-07-15 | CKK205 | ICN → AMS | Jul 15, 20:00 UTC | Jul 16, 14:20 UTC | 18h 20m |
| 2026-07-15 | CKK257 | - | Jul 15, 17:15 UTC | Jul 15, 17:50 UTC | 35m |
| 2026-07-14 | CKK257 | - | Jul 14, 22:30 UTC | Jul 15, 17:50 UTC | 19h 19m |
| 2026-07-14 | CKK206 | - | Jul 14, 19:50 UTC | Jul 15, 17:50 UTC | 21h 59m |
| 2026-07-14 | CKK206 | - | Jul 14, 17:50 UTC | Jul 15, 17:45 UTC | 23h 54m |
| 2026-07-14 | CKK206 | - | Jul 14, 17:05 UTC | Jul 14, 23:05 UTC | 5h 59m |
| 2026-07-13 | CKK205 | - | Jul 13, 20:40 UTC | Jul 14, 14:20 UTC | 17h 40m |
| 2026-07-13 | CKK205 | - | Jul 13, 17:50 UTC | Jul 14, 14:20 UTC | 20h 30m |
| 2026-07-13 | CKK205 | - | Jul 13, 17:20 UTC | Jul 14, 14:20 UTC | 21h 0m |
| 2026-07-13 | CKK205 | - | Jul 13, 13:50 UTC | Jul 14, 13:45 UTC | 23h 55m |
| 2026-07-13 | CKK210 | - | Jul 13, 11:55 UTC | Jul 14, 11:45 UTC | 23h 50m |
| 2026-07-12 | CKK209 | - | Jul 12, 14:35 UTC | Jul 13, 06:05 UTC | 15h 30m |
| 2026-07-12 | CKK286 | - | Jul 12, 13:15 UTC | Jul 12, 13:30 UTC | 15m |
| 2026-07-12 | CKK285 | - | Jul 12, 10:25 UTC | Jul 12, 10:40 UTC | 15m |
| 2026-07-10 | CKK210 | - | Jul 10, 12:15 UTC | Jul 10, 20:40 UTC | 8h 25m |
| 2026-07-10 | CKK209 | - | Jul 10, 02:15 UTC | Jul 10, 08:40 UTC | 6h 25m |
| 2026-07-09 | CKK209 | - | Jul 9, 06:45 UTC | Jul 10, 03:00 UTC | 20h 15m |
| 2026-07-08 | CKK226 | - | Jul 8, 18:00 UTC | Jul 9, 06:50 UTC | 12h 50m |
| 2026-07-08 | CKK225 | PVG → LAX | Jul 8, 09:35 UTC | Jul 8, 15:05 UTC | 5h 30m |
| 2026-07-08 | CKK225 | PVG → LAX | Jul 8, 00:10 UTC | Jul 8, 08:00 UTC | 7h 50m |
| 2026-07-07 | CKK225 | PVG → LAX | Jul 7, 09:50 UTC | Jul 8, 08:00 UTC | 22h 10m |
| 2026-07-07 | CKK225 | PVG → LAX | Jul 7, 09:40 UTC | Jul 8, 07:45 UTC | 22h 5m |
| 2026-07-07 | CKK225 | PVG → LAX | Jul 7, 03:55 UTC | Jul 8, 02:00 UTC | 22h 5m |
| 2026-07-07 | CKK225 | PVG → LAX | Jul 7, 03:05 UTC | Jul 8, 01:45 UTC | 22h 40m |
| 2026-07-06 | CKK228 | - | Jul 6, 21:00 UTC | Jul 7, 10:30 UTC | 13h 30m |
| 2026-07-06 | CKK227 | PVG → ANC | Jul 6, 12:50 UTC | Jul 6, 18:20 UTC | 5h 30m |
| 2026-07-05 | CKK227 | PVG → ANC | Jul 5, 20:05 UTC | Jul 6, 11:15 UTC | 15h 10m |
| 2026-07-05 | CKK224 | LAX → PVG | Jul 5, 10:15 UTC | Jul 6, 05:20 UTC | 19h 5m |
| 2026-07-04 | CKK223 | - | Jul 4, 13:40 UTC | Jul 5, 07:30 UTC | 17h 50m |
| 2026-07-04 | CKK288 | - | Jul 4, 07:55 UTC | Jul 4, 11:25 UTC | 3h 30m |
| 2026-07-03 | CKK287 | - | Jul 3, 19:10 UTC | Jul 4, 06:25 UTC | 11h 15m |
| 2026-07-02 | CKK261 | - | Jul 2, 23:00 UTC | Jul 3, 17:40 UTC | 18h 40m |
| 2026-07-02 | CKK226 | - | Jul 2, 17:50 UTC | Jul 3, 17:40 UTC | 23h 50m |
| 2026-07-02 | CKK226 | - | Jul 2, 17:00 UTC | Jul 3, 05:25 UTC | 12h 25m |
| 2026-07-02 | CKK225 | PVG → LAX | Jul 2, 08:30 UTC | Jul 2, 14:25 UTC | 5h 55m |
| 2026-07-02 | CKK225 | PVG → LAX | Jul 2, 00:00 UTC | Jul 2, 07:15 UTC | 7h 15m |
| 2026-07-01 | CKK225 | PVG → LAX | Jul 1, 09:50 UTC | Jul 2, 07:15 UTC | 21h 25m |
| 2026-07-01 | CKK225 | PVG → LAX | Jul 1, 09:40 UTC | Jul 2, 07:15 UTC | 21h 35m |
| 2026-07-01 | CKK225 | PVG → LAX | Jul 1, 03:50 UTC | Jul 2, 01:25 UTC | 21h 35m |
| 2026-07-01 | CKK222 | - | Jul 1, 01:55 UTC | Jul 2, 01:25 UTC | 23h 30m |
| 2026-06-30 | CKK222 | - | Jun 30, 22:00 UTC | Jul 1, 10:25 UTC | 12h 25m |
| 2026-06-30 | CKK221 | PVG → LAX | Jun 30, 09:05 UTC | Jun 30, 19:20 UTC | 10h 15m |
| 2026-06-29 | CKK221 | PVG → LAX | Jun 29, 15:49 UTC | Jun 30, 10:35 UTC | 18h 46m |
| 2026-06-29 | CKK236 | - | Jun 29, 13:49 UTC | Jun 30, 10:35 UTC | 20h 46m |
| 2026-06-29 | CKK236 | - | Jun 29, 12:20 UTC | Jun 30, 10:35 UTC | 22h 16m |
| 2026-06-28 | CKK235 | - | Jun 28, 14:09 UTC | Jun 29, 08:44 UTC | 18h 35m |
| 2026-06-28 | CKK602 | - | Jun 28, 09:50 UTC | Jun 29, 08:44 UTC | 22h 55m |
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-228C page for operator, model, and routing details .