sensors Mode-S transponder
781D9C
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-329E · AIRBUS A-350-900
- Hex
- 781D9C
- Octal
- 36016634
- Decimal
- 7,871,900
- Country
- CN
- Tail
- B-329E
- Type
- A359
- Flights observed
- 207
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 781D9C 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 |
|---|---|---|---|
| CES787 | - | 28 | 2026-07-12 |
| CES788 | - | 21 | 2026-07-13 |
| CES709 | - | 14 | 2026-07-10 |
| CES217 | - | 14 | 2026-06-27 |
| CES786 | China Eastern Airlines | 13 | 2026-06-12 |
| CES561 | China Eastern Airlines | 13 | 2026-06-26 |
| CES218 | - | 13 | 2026-06-28 |
| CES243 | - | 12 | 2026-07-13 |
| CES710 | - | 11 | 2026-07-11 |
| CES785 | China Eastern Airlines | 9 | 2026-06-11 |
| CES562 | - | 7 | 2026-06-27 |
| CES249 | China Eastern Airlines | 6 | 2026-05-27 |
| CES250 | China Eastern Airlines | 5 | 2026-05-28 |
| CES244 | China Eastern Airlines | 5 | 2026-06-22 |
| CES568 | - | 4 | 2026-06-16 |
| CES781 | - | 3 | 2026-07-09 |
| CES256 | - | 3 | 2026-06-30 |
| CES782 | - | 2 | 2026-07-10 |
| CES751 | - | 2 | 2026-06-14 |
| CES7235 | China Eastern Airlines | 2 | 2026-05-12 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CES243 | - | Jul 13, 19:20 UTC | Jul 14, 05:30 UTC | 10h 10m |
| 2026-07-13 | CES788 | - | Jul 13, 01:05 UTC | Jul 13, 23:15 UTC | 22h 10m |
| 2026-07-12 | CES788 | - | Jul 12, 23:15 UTC | Jul 13, 23:00 UTC | 23h 45m |
| 2026-07-12 | CES787 | - | Jul 12, 13:50 UTC | Jul 12, 21:05 UTC | 7h 15m |
| 2026-07-12 | CES787 | - | Jul 12, 01:15 UTC | Jul 12, 21:05 UTC | 19h 50m |
| 2026-07-11 | CES787 | - | Jul 11, 21:05 UTC | Jul 12, 21:00 UTC | 23h 55m |
| 2026-07-11 | CES710 | - | Jul 11, 19:05 UTC | Jul 12, 19:01 UTC | 23h 55m |
| 2026-07-11 | CES710 | - | Jul 11, 18:10 UTC | Jul 12, 17:01 UTC | 22h 50m |
| 2026-07-10 | CES709 | - | Jul 10, 18:35 UTC | Jul 11, 05:40 UTC | 11h 5m |
| 2026-07-10 | CES709 | - | Jul 10, 07:05 UTC | Jul 11, 05:40 UTC | 22h 35m |
| 2026-07-10 | CES709 | - | Jul 10, 06:35 UTC | Jul 11, 05:01 UTC | 22h 26m |
| 2026-07-10 | CES709 | - | Jul 10, 03:20 UTC | Jul 11, 03:01 UTC | 23h 40m |
| 2026-07-10 | CES782 | - | Jul 10, 00:20 UTC | Jul 10, 22:20 UTC | 22h 0m |
| 2026-07-09 | CES781 | - | Jul 9, 03:20 UTC | Jul 9, 21:45 UTC | 18h 25m |
| 2026-07-02 | CES788 | - | Jul 2, 19:25 UTC | Jul 3, 01:55 UTC | 6h 30m |
| 2026-07-02 | CES787 | PVG → FCO | Jul 2, 09:25 UTC | Jul 2, 16:50 UTC | 7h 25m |
| 2026-07-01 | CES787 | PVG → FCO | Jul 1, 19:40 UTC | Jul 2, 16:50 UTC | 21h 10m |
| 2026-07-01 | CES787 | PVG → FCO | Jul 1, 18:50 UTC | Jul 2, 16:50 UTC | 22h 0m |
| 2026-07-01 | CES787 | PVG → FCO | Jul 1, 15:45 UTC | Jul 2, 10:10 UTC | 18h 25m |
| 2026-07-01 | CES565 | - | Jul 1, 09:45 UTC | Jul 1, 13:35 UTC | 3h 50m |
| 2026-06-30 | CES565 | - | Jun 30, 18:05 UTC | Jul 1, 13:35 UTC | 19h 30m |
| 2026-06-30 | CES256 | - | Jun 30, 15:05 UTC | Jul 1, 13:35 UTC | 22h 30m |
| 2026-06-30 | CES256 | - | Jun 30, 13:05 UTC | Jul 1, 10:45 UTC | 21h 40m |
| 2026-06-30 | CES256 | - | Jun 30, 12:40 UTC | Jul 1, 10:45 UTC | 22h 5m |
| 2026-06-29 | CES255 | - | Jun 29, 12:45 UTC | Jun 30, 05:35 UTC | 16h 51m |
| 2026-06-29 | CES255 | - | Jun 29, 09:29 UTC | Jun 30, 05:35 UTC | 20h 6m |
| 2026-06-28 | CES218 | - | Jun 28, 13:04 UTC | Jun 29, 07:40 UTC | 18h 35m |
| 2026-06-28 | CES218 | - | Jun 28, 11:04 UTC | Jun 29, 07:40 UTC | 20h 35m |
| 2026-06-28 | CES218 | - | Jun 28, 10:44 UTC | Jun 29, 07:40 UTC | 20h 55m |
| 2026-06-27 | CES217 | - | Jun 27, 09:04 UTC | Jun 28, 04:55 UTC | 19h 50m |
| 2026-06-27 | CES217 | - | Jun 27, 08:14 UTC | Jun 28, 04:55 UTC | 20h 40m |
| 2026-06-27 | CES562 | - | Jun 27, 01:19 UTC | Jun 28, 00:59 UTC | 23h 40m |
| 2026-06-26 | CES561 | PVG → SYD | Jun 26, 06:25 UTC | Jun 26, 23:04 UTC | 16h 40m |
| 2026-06-26 | CES561 | PVG → SYD | Jun 26, 03:15 UTC | Jun 26, 23:04 UTC | 19h 50m |
| 2026-06-26 | CES782 | - | Jun 26, 00:15 UTC | Jun 26, 23:00 UTC | 22h 45m |
| 2026-06-25 | CES781 | - | Jun 25, 12:35 UTC | Jun 25, 21:20 UTC | 8h 45m |
| 2026-06-24 | CES781 | - | Jun 24, 23:04 UTC | Jun 25, 21:20 UTC | 22h 15m |
| 2026-06-24 | CES788 | - | Jun 24, 21:04 UTC | Jun 25, 20:59 UTC | 23h 55m |
| 2026-06-24 | CES788 | - | Jun 24, 19:20 UTC | Jun 25, 18:10 UTC | 22h 50m |
| 2026-06-24 | CES787 | PVG → FCO | Jun 24, 06:25 UTC | Jun 24, 16:19 UTC | 9h 55m |
| 2026-06-22 | CES244 | MXP → PVG | Jun 22, 11:39 UTC | Jun 22, 14:29 UTC | 2h 50m |
| 2026-06-21 | CES243 | PVG → MXP | Jun 21, 19:29 UTC | Jun 22, 05:49 UTC | 10h 20m |
| 2026-06-21 | CES243 | PVG → MXP | Jun 21, 09:04 UTC | Jun 22, 05:49 UTC | 20h 45m |
| 2026-06-21 | CES243 | PVG → MXP | Jun 21, 08:40 UTC | Jun 22, 05:49 UTC | 21h 10m |
| 2026-06-21 | CES562 | - | Jun 21, 01:19 UTC | Jun 21, 23:14 UTC | 21h 55m |
| 2026-06-20 | CES561 | PVG → SYD | Jun 20, 21:05 UTC | Jun 20, 22:45 UTC | 1h 40m |
| 2026-06-19 | CES244 | MXP → PVG | Jun 19, 12:25 UTC | Jun 19, 18:49 UTC | 6h 25m |
| 2026-06-18 | CES243 | PVG → MXP | Jun 18, 22:40 UTC | Jun 19, 05:30 UTC | 6h 49m |
| 2026-06-18 | CES243 | PVG → MXP | Jun 18, 03:35 UTC | Jun 19, 02:59 UTC | 23h 24m |
| 2026-06-17 | CES262 | - | Jun 17, 23:05 UTC | Jun 18, 23:00 UTC | 23h 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-329E page for operator, model, and routing details .