sensors Mode-S transponder
781D9E
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-329A · AIRBUS A-320neo
- Hex
- 781D9E
- Octal
- 36016636
- Decimal
- 7,871,902
- Country
- CN
- Tail
- B-329A
- Type
- A20N
- Flights observed
- 74
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 8h ago
Last known position
Country allocation
The ICAO 24-bit address 781D9E 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 |
|---|---|---|---|
| CES6329 | - | 6 | 2026-06-24 |
| CES2803 | - | 5 | 2026-07-08 |
| CES7707 | - | 4 | 2026-07-10 |
| CES2970 | China Eastern Airlines | 4 | 2026-06-04 |
| CES2969 | China Eastern Airlines | 4 | 2026-06-04 |
| CES2804 | China Eastern Airlines | 4 | 2026-07-08 |
| CES7708 | - | 3 | 2026-07-10 |
| CES765 | - | 3 | 2026-07-08 |
| CES6340 | - | 3 | 2026-06-22 |
| CES2961 | China Eastern Airlines | 3 | 2026-04-16 |
| CES2839 | China Eastern Airlines | 3 | 2026-06-02 |
| CES2712 | - | 3 | 2026-06-17 |
| CES7706 | - | 2 | 2026-07-14 |
| CES7705 | - | 2 | 2026-07-14 |
| CES766 | China Eastern Airlines | 2 | 2026-04-20 |
| CES580 | - | 2 | 2026-06-28 |
| CES579 | - | 2 | 2026-06-28 |
| CES2962 | China Eastern Airlines | 2 | 2026-04-16 |
| CES2951 | China Eastern Airlines | 2 | 2026-04-27 |
| CES2890 | China Eastern Airlines | 2 | 2026-05-29 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | CES7706 | - | Jul 14, 10:25 UTC | Jul 14, 14:05 UTC | 3h 40m |
| 2026-07-14 | CES7705 | - | Jul 14, 04:50 UTC | Jul 14, 08:05 UTC | 3h 15m |
| 2026-07-10 | CES7708 | - | Jul 10, 23:35 UTC | Jul 11, 03:30 UTC | 3h 55m |
| 2026-07-10 | CES7707 | - | Jul 10, 17:30 UTC | Jul 10, 21:15 UTC | 3h 45m |
| 2026-07-08 | CES2804 | BKK → NKG | Jul 8, 21:05 UTC | Jul 8, 23:10 UTC | 2h 5m |
| 2026-07-08 | CES2803 | HKG → BKK | Jul 8, 05:05 UTC | Jul 8, 19:50 UTC | 14h 45m |
| 2026-07-08 | CES765 | - | Jul 8, 02:45 UTC | Jul 8, 03:40 UTC | 55m |
| 2026-07-06 | CES7706 | - | Jul 6, 09:55 UTC | Jul 7, 01:40 UTC | 15h 45m |
| 2026-07-06 | CES7705 | - | Jul 6, 05:00 UTC | Jul 6, 08:10 UTC | 3h 10m |
| 2026-07-04 | CES7708 | - | Jul 4, 00:10 UTC | Jul 4, 04:20 UTC | 4h 10m |
| 2026-07-03 | CES7707 | - | Jul 3, 21:20 UTC | Jul 3, 21:40 UTC | 20m |
| 2026-07-01 | CES7708 | - | Jul 1, 23:45 UTC | Jul 2, 04:00 UTC | 4h 15m |
| 2026-07-01 | CES7707 | - | Jul 1, 20:35 UTC | Jul 1, 21:00 UTC | 25m |
| 2026-07-01 | CES7707 | - | Jul 1, 17:45 UTC | Jul 1, 17:55 UTC | 10m |
| 2026-06-29 | CES2804 | BKK → NKG | Jun 29, 19:39 UTC | Jun 29, 22:00 UTC | 2h 20m |
| 2026-06-29 | CES2803 | - | Jun 29, 17:55 UTC | Jun 29, 18:19 UTC | 25m |
| 2026-06-29 | CES2803 | - | Jun 29, 16:35 UTC | Jun 29, 17:14 UTC | 40m |
| 2026-06-28 | CES2878 | - | Jun 28, 17:00 UTC | Jun 28, 17:10 UTC | 10m |
| 2026-06-28 | CES2877 | - | Jun 28, 14:59 UTC | Jun 28, 15:24 UTC | 25m |
| 2026-06-28 | CES9789 | - | Jun 28, 08:29 UTC | Jun 28, 08:39 UTC | 10m |
| 2026-06-28 | CES580 | - | Jun 28, 03:29 UTC | Jun 28, 03:50 UTC | 20m |
| 2026-06-28 | CES579 | - | Jun 28, 01:34 UTC | Jun 28, 01:59 UTC | 25m |
| 2026-06-24 | CES6329 | - | Jun 24, 00:15 UTC | Jun 24, 14:45 UTC | 14h 30m |
| 2026-06-23 | CES6329 | - | Jun 23, 00:24 UTC | Jun 23, 15:04 UTC | 14h 40m |
| 2026-06-22 | CES6340 | - | Jun 22, 10:49 UTC | Jun 22, 14:59 UTC | 4h 10m |
| 2026-06-22 | CES6329 | - | Jun 22, 00:24 UTC | Jun 22, 00:34 UTC | 10m |
| 2026-06-17 | CES2712 | - | Jun 17, 00:15 UTC | Jun 17, 00:30 UTC | 15m |
| 2026-06-16 | CES580 | - | Jun 16, 03:50 UTC | Jun 16, 04:15 UTC | 25m |
| 2026-06-16 | CES579 | - | Jun 16, 01:40 UTC | Jun 16, 02:04 UTC | 25m |
| 2026-06-04 | CES2970 | KUL → NKG | Jun 4, 17:10 UTC | Jun 4, 20:40 UTC | 3h 30m |
| 2026-06-04 | CES2969 | NKG → KUL | Jun 4, 15:20 UTC | Jun 4, 15:40 UTC | 20m |
| 2026-06-04 | CES2969 | NKG → KUL | Jun 4, 12:10 UTC | Jun 4, 12:30 UTC | 20m |
| 2026-06-02 | CES2839 | NKG → HRB | Jun 2, 18:30 UTC | Jun 3, 01:35 UTC | 7h 5m |
| 2026-05-31 | CES2794 | ZHA → NKG | May 31, 08:45 UTC | May 31, 08:55 UTC | 10m |
| 2026-05-29 | CES2890 | XMN → NKG | May 29, 09:20 UTC | May 29, 09:35 UTC | 15m |
| 2026-05-28 | CES2890 | XMN → NKG | May 28, 10:25 UTC | May 28, 10:35 UTC | 10m |
| 2026-05-27 | CES2970 | KUL → NKG | May 27, 17:05 UTC | May 27, 20:35 UTC | 3h 30m |
| 2026-05-27 | CES2969 | NKG → KUL | May 27, 12:30 UTC | May 27, 15:40 UTC | 3h 10m |
| 2026-05-19 | CES6329 | PVG → ZHA | May 19, 00:20 UTC | May 19, 00:30 UTC | 10m |
| 2026-05-18 | CES6340 | SHE → SHA | May 18, 11:05 UTC | May 18, 14:55 UTC | 3h 50m |
| 2026-05-17 | CES6340 | SHE → SHA | May 17, 10:50 UTC | May 17, 14:50 UTC | 4h 0m |
| 2026-05-17 | CES6329 | PVG → ZHA | May 17, 00:10 UTC | May 17, 00:20 UTC | 10m |
| 2026-05-16 | CES6339 | SHA → SHE | May 16, 09:31 UTC | May 16, 09:40 UTC | 10m |
| 2026-05-15 | CES6329 | PVG → ZHA | May 15, 00:25 UTC | May 15, 00:40 UTC | 15m |
| 2026-05-10 | CES9798 | MFM → NKG | May 10, 06:55 UTC | May 10, 07:55 UTC | 1h 0m |
| 2026-05-09 | CES2804 | BKK → NKG | May 9, 19:35 UTC | May 10, 04:39 UTC | 9h 5m |
| 2026-05-09 | CES2803 | NKG → BKK | May 9, 17:10 UTC | May 9, 18:10 UTC | 1h 0m |
| 2026-05-07 | CES2840 | HRB → NKG | May 7, 18:25 UTC | May 8, 01:29 UTC | 7h 4m |
| 2026-05-03 | CES2712 | ZUH → NKG | May 3, 00:30 UTC | May 3, 00:45 UTC | 15m |
| 2026-05-02 | CES5002 | TPE → NKG | May 2, 09:55 UTC | May 2, 10:30 UTC | 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-329A page for operator, model, and routing details .