sensors Mode-S transponder
781B7B
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-323H · AIRBUS A-350-900
- Hex
- 781B7B
- Octal
- 36015573
- Decimal
- 7,871,355
- Country
- CN
- Tail
- B-323H
- Type
- A359
- Flights observed
- 63
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 16h ago
Last known position
Country allocation
The ICAO 24-bit address 781B7B 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 |
|---|---|---|---|
| CES223 | China Eastern Airlines | 8 | 2026-05-10 |
| CES250 | China Eastern Airlines | 6 | 2026-05-13 |
| CES243 | China Eastern Airlines | 5 | 2026-05-14 |
| CES788 | China Eastern Airlines | 4 | 2026-04-18 |
| CES787 | China Eastern Airlines | 4 | 2026-04-17 |
| CES5350 | China Eastern Airlines | 4 | 2026-05-26 |
| CES5341 | China Eastern Airlines | 4 | 2026-05-26 |
| CES524 | China Eastern Airlines | 4 | 2026-05-11 |
| CES224 | China Eastern Airlines | 4 | 2026-05-10 |
| CES562 | China Eastern Airlines | 2 | 2026-05-29 |
| CES561 | China Eastern Airlines | 2 | 2026-05-28 |
| CES523 | China Eastern Airlines | 2 | 2026-04-29 |
| CES249 | China Eastern Airlines | 2 | 2026-05-12 |
| CES244 | China Eastern Airlines | 2 | 2026-05-15 |
| CES786 | China Eastern Airlines | 1 | 2026-05-07 |
| CES785 | China Eastern Airlines | 1 | 2026-05-06 |
| CES736 | China Eastern Airlines | 1 | 2026-04-19 |
| CES735 | China Eastern Airlines | 1 | 2026-04-19 |
| CES567 | China Eastern Airlines | 1 | 2026-05-14 |
| CES566 | China Eastern Airlines | 1 | 2026-05-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CES562 | SYD → PVG | May 29, 01:15 UTC | May 29, 10:15 UTC | 9h 0m |
| 2026-05-28 | CES561 | PVG → SYD | May 28, 13:25 UTC | May 28, 22:50 UTC | 9h 25m |
| 2026-05-28 | CES5342 | SZX → PVG | May 28, 06:45 UTC | May 28, 06:55 UTC | 10m |
| 2026-05-28 | CES5333 | SHA → SZX | May 28, 02:50 UTC | May 28, 03:15 UTC | 25m |
| 2026-05-26 | CES5350 | SZX → SHA | May 26, 10:39 UTC | May 26, 10:50 UTC | 10m |
| 2026-05-26 | CES5341 | SHA → SZX | May 26, 07:45 UTC | May 26, 08:04 UTC | 20m |
| 2026-05-24 | CES5341 | SHA → SZX | May 24, 08:55 UTC | May 24, 09:40 UTC | 45m |
| 2026-05-23 | CES5316 | CAN → PVG | May 23, 06:50 UTC | May 23, 07:00 UTC | 10m |
| 2026-05-22 | CES5350 | SZX → SHA | May 22, 12:25 UTC | May 22, 12:35 UTC | 10m |
| 2026-05-22 | CES5341 | SHA → SZX | May 22, 09:45 UTC | May 22, 10:05 UTC | 20m |
| 2026-05-20 | CES5350 | SZX → SHA | May 20, 11:00 UTC | May 20, 11:15 UTC | 15m |
| 2026-05-20 | CES5341 | SHA → SZX | May 20, 08:05 UTC | May 20, 08:25 UTC | 20m |
| 2026-05-18 | CES5350 | SZX → SHA | May 18, 11:20 UTC | May 18, 11:30 UTC | 10m |
| 2026-05-15 | CES244 | MXP → PVG | May 15, 12:10 UTC | May 15, 18:35 UTC | 6h 24m |
| 2026-05-14 | CES243 | PVG → MXP | May 14, 12:35 UTC | May 15, 05:40 UTC | 17h 5m |
| 2026-05-14 | CES243 | PVG → MXP | May 14, 09:30 UTC | May 15, 05:40 UTC | 20h 10m |
| 2026-05-14 | CES567 | PVG → SIN | May 14, 06:55 UTC | May 14, 07:10 UTC | 15m |
| 2026-05-13 | CES250 | BCN → PVG | May 13, 09:30 UTC | May 14, 03:30 UTC | 18h 0m |
| 2026-05-12 | CES249 | PVG → BCN | May 12, 21:40 UTC | May 13, 05:15 UTC | 7h 35m |
| 2026-05-11 | CES524 | NRT → PVG | May 11, 05:10 UTC | May 11, 06:40 UTC | 1h 30m |
| 2026-05-10 | CES224 | CAI → PVG | May 10, 12:10 UTC | May 11, 03:40 UTC | 15h 30m |
| 2026-05-10 | CES223 | PVG → CAI | May 10, 02:10 UTC | May 10, 05:45 UTC | 3h 35m |
| 2026-05-09 | CES223 | PVG → CAI | May 9, 08:50 UTC | May 10, 05:45 UTC | 20h 55m |
| 2026-05-09 | CES223 | PVG → CAI | May 9, 08:25 UTC | May 10, 05:45 UTC | 21h 20m |
| 2026-05-09 | CES562 | SYD → PVG | May 9, 01:20 UTC | May 9, 10:40 UTC | 9h 20m |
| 2026-05-08 | CES561 | PVG → SYD | May 8, 21:45 UTC | May 8, 22:40 UTC | 55m |
| 2026-05-07 | CES786 | VCE → PVG | May 7, 09:50 UTC | May 7, 15:50 UTC | 6h 0m |
| 2026-05-06 | CES785 | PVG → VCE | May 6, 19:00 UTC | May 7, 05:25 UTC | 10h 25m |
| 2026-05-05 | CES566 | SIN → PVG | May 5, 15:35 UTC | May 5, 19:05 UTC | 3h 30m |
| 2026-05-05 | CES565 | PVG → SIN | May 5, 07:35 UTC | May 5, 11:40 UTC | 4h 5m |
| 2026-05-02 | CES244 | MXP → PVG | May 2, 12:30 UTC | May 2, 18:50 UTC | 6h 20m |
| 2026-05-01 | CES243 | PVG → MXP | May 1, 19:15 UTC | May 2, 05:15 UTC | 10h 0m |
| 2026-05-01 | CES243 | PVG → MXP | May 1, 08:50 UTC | May 2, 05:15 UTC | 20h 25m |
| 2026-05-01 | CES243 | PVG → MXP | May 1, 08:40 UTC | May 2, 05:15 UTC | 20h 35m |
| 2026-04-30 | CES224 | CAI → PVG | Apr 30, 11:50 UTC | May 1, 06:35 UTC | 18h 45m |
| 2026-04-30 | CES223 | PVG → CAI | Apr 30, 02:20 UTC | Apr 30, 05:35 UTC | 3h 15m |
| 2026-04-29 | CES223 | PVG → CAI | Apr 29, 06:49 UTC | Apr 30, 05:35 UTC | 22h 45m |
| 2026-04-29 | CES524 | NRT → PVG | Apr 29, 05:40 UTC | Apr 30, 04:45 UTC | 23h 5m |
| 2026-04-29 | CES523 | PVG → NRT | Apr 29, 02:40 UTC | Apr 29, 04:00 UTC | 1h 20m |
| 2026-04-19 | CES736 | SYD → PVG | Apr 19, 10:40 UTC | Apr 19, 19:45 UTC | 9h 5m |
| 2026-04-19 | CES735 | PVG → SYD | Apr 19, 01:10 UTC | Apr 19, 02:10 UTC | 1h 0m |
| 2026-04-18 | CES788 | FCO → PVG | Apr 18, 01:25 UTC | Apr 18, 02:00 UTC | 35m |
| 2026-04-17 | CES788 | FCO → PVG | Apr 17, 23:25 UTC | Apr 18, 01:20 UTC | 1h 55m |
| 2026-04-17 | CES788 | FCO → PVG | Apr 17, 21:25 UTC | Apr 17, 23:20 UTC | 1h 55m |
| 2026-04-17 | CES788 | FCO → PVG | Apr 17, 19:25 UTC | Apr 17, 21:20 UTC | 1h 55m |
| 2026-04-17 | CES787 | PVG → FCO | Apr 17, 15:20 UTC | Apr 17, 16:50 UTC | 1h 30m |
| 2026-04-17 | CES787 | PVG → FCO | Apr 17, 13:20 UTC | Apr 17, 15:15 UTC | 1h 54m |
| 2026-04-17 | CES787 | PVG → FCO | Apr 17, 12:40 UTC | Apr 17, 13:15 UTC | 35m |
| 2026-04-17 | CES787 | PVG → FCO | Apr 17, 09:40 UTC | Apr 17, 10:25 UTC | 45m |
| 2026-04-16 | CES224 | CAI → PVG | Apr 16, 13:25 UTC | Apr 16, 14:25 UTC | 1h 0m |
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-323H page for operator, model, and routing details .