sensors Mode-S transponder
781C4F
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-325S · AIRBUS A-320neo
- Hex
- 781C4F
- Octal
- 36016117
- Decimal
- 7,871,567
- Country
- CN
- Tail
- B-325S
- Type
- A20N
- Flights observed
- 81
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 20h ago
Last known position
Country allocation
The ICAO 24-bit address 781C4F 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 |
|---|---|---|---|
| CES725 | - | 7 | 2026-06-29 |
| CES726 | China Eastern Airlines | 4 | 2026-06-29 |
| CES6050 | - | 4 | 2026-06-30 |
| CES6049 | - | 4 | 2026-06-30 |
| CES5023 | - | 4 | 2026-06-23 |
| CES760 | - | 3 | 2026-07-13 |
| CES759 | China Eastern Airlines | 3 | 2026-06-04 |
| CES501 | China Eastern Airlines | 3 | 2026-05-14 |
| CES294 | China Eastern Airlines | 3 | 2026-05-25 |
| CES293 | China Eastern Airlines | 3 | 2026-05-25 |
| CES7425 | - | 2 | 2026-07-16 |
| CES6903 | China Eastern Airlines | 2 | 2026-04-30 |
| CES6664 | - | 2 | 2026-07-14 |
| CES5062 | - | 2 | 2026-07-17 |
| CES5061 | - | 2 | 2026-07-16 |
| CES284 | - | 2 | 2026-07-08 |
| CES9992 | - | 1 | 2026-06-21 |
| CES9991 | - | 1 | 2026-06-21 |
| CES892 | China Eastern Airlines | 1 | 2026-04-21 |
| CES770 | - | 1 | 2026-07-07 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CES5062 | - | Jul 17, 06:20 UTC | Jul 17, 06:54 UTC | 35m |
| 2026-07-16 | CES5061 | - | Jul 16, 20:45 UTC | Jul 17, 04:35 UTC | 7h 50m |
| 2026-07-16 | CES7425 | - | Jul 16, 18:40 UTC | Jul 16, 18:50 UTC | 10m |
| 2026-07-16 | CES7425 | - | Jul 16, 16:44 UTC | Jul 16, 16:55 UTC | 10m |
| 2026-07-14 | CES6664 | - | Jul 14, 15:35 UTC | Jul 14, 16:20 UTC | 45m |
| 2026-07-13 | CES6664 | - | Jul 13, 20:20 UTC | Jul 14, 16:20 UTC | 20h 0m |
| 2026-07-13 | CES760 | - | Jul 13, 19:45 UTC | Jul 14, 16:20 UTC | 20h 35m |
| 2026-07-13 | CES7404 | - | Jul 13, 06:35 UTC | Jul 13, 21:00 UTC | 14h 25m |
| 2026-07-12 | CES7403 | - | Jul 12, 14:40 UTC | Jul 13, 05:15 UTC | 14h 35m |
| 2026-07-10 | CES5604 | - | Jul 10, 23:20 UTC | Jul 11, 07:55 UTC | 8h 35m |
| 2026-07-10 | CES5165 | - | Jul 10, 17:05 UTC | Jul 10, 17:20 UTC | 15m |
| 2026-07-09 | CES6278 | - | Jul 9, 15:50 UTC | Jul 10, 10:50 UTC | 19h 0m |
| 2026-07-08 | CES284 | - | Jul 8, 18:45 UTC | Jul 9, 15:55 UTC | 21h 10m |
| 2026-07-08 | CES284 | - | Jul 8, 15:50 UTC | Jul 9, 15:45 UTC | 23h 55m |
| 2026-07-07 | CES770 | - | Jul 7, 08:25 UTC | Jul 7, 11:50 UTC | 3h 25m |
| 2026-07-07 | CES769 | - | Jul 7, 02:40 UTC | Jul 7, 05:55 UTC | 3h 15m |
| 2026-07-01 | CES760 | - | Jul 1, 14:40 UTC | Jul 1, 20:25 UTC | 5h 45m |
| 2026-06-30 | CES6050 | - | Jun 30, 10:50 UTC | Jun 30, 15:00 UTC | 4h 10m |
| 2026-06-30 | CES6049 | - | Jun 30, 08:20 UTC | Jun 30, 08:50 UTC | 30m |
| 2026-06-29 | CES726 | HKG → PVG | Jun 29, 23:44 UTC | Jun 30, 04:45 UTC | 5h 1m |
| 2026-06-29 | CES725 | - | Jun 29, 15:09 UTC | Jun 29, 15:39 UTC | 30m |
| 2026-06-29 | CES725 | - | Jun 29, 14:04 UTC | Jun 29, 14:25 UTC | 20m |
| 2026-06-28 | CES5608 | - | Jun 28, 12:15 UTC | Jun 28, 13:00 UTC | 45m |
| 2026-06-26 | CES7368 | - | Jun 26, 17:29 UTC | Jun 26, 18:54 UTC | 1h 25m |
| 2026-06-26 | CES7367 | - | Jun 26, 14:39 UTC | Jun 26, 16:00 UTC | 1h 20m |
| 2026-06-23 | CES5023 | - | Jun 23, 13:55 UTC | Jun 23, 21:24 UTC | 7h 30m |
| 2026-06-22 | CES5023 | - | Jun 22, 23:50 UTC | Jun 23, 21:24 UTC | 21h 35m |
| 2026-06-22 | CES5023 | - | Jun 22, 23:20 UTC | Jun 23, 21:24 UTC | 22h 5m |
| 2026-06-21 | CES9992 | - | Jun 21, 13:54 UTC | Jun 21, 15:19 UTC | 1h 25m |
| 2026-06-21 | CES9991 | - | Jun 21, 10:34 UTC | Jun 21, 11:55 UTC | 1h 20m |
| 2026-06-18 | CES726 | HKG → PVG | Jun 18, 23:45 UTC | Jun 19, 00:59 UTC | 1h 14m |
| 2026-06-18 | CES725 | - | Jun 18, 14:05 UTC | Jun 18, 15:35 UTC | 1h 30m |
| 2026-06-12 | CES5016 | HKG → PKX | Jun 12, 06:05 UTC | Jun 12, 06:20 UTC | 15m |
| 2026-06-12 | CES5015 | PKX → HKG | Jun 12, 03:10 UTC | Jun 12, 03:50 UTC | 40m |
| 2026-06-11 | CES5148 | HGH → PKX | Jun 11, 10:00 UTC | Jun 11, 10:10 UTC | 10m |
| 2026-06-07 | CES5100 | PEK → PVG | Jun 7, 23:15 UTC | Jun 8, 14:25 UTC | 15h 10m |
| 2026-06-07 | CES5053 | PVG → TAE | Jun 7, 01:30 UTC | Jun 7, 01:40 UTC | 10m |
| 2026-06-06 | CES5373 | TYN → WUH | Jun 6, 02:45 UTC | Jun 6, 07:35 UTC | 4h 50m |
| 2026-06-05 | CES5154 | PEK → SHA | Jun 5, 04:15 UTC | Jun 5, 04:25 UTC | 10m |
| 2026-06-04 | CES759 | PVG → PNH | Jun 4, 14:45 UTC | Jun 4, 20:35 UTC | 5h 50m |
| 2026-05-31 | CES760 | PNH → PVG | May 31, 13:35 UTC | May 31, 19:20 UTC | 5h 45m |
| 2026-05-29 | CES510 | HKG → PVG | May 29, 09:35 UTC | May 29, 19:15 UTC | 9h 40m |
| 2026-05-29 | CES509 | PVG → HKG | May 29, 06:20 UTC | May 29, 07:35 UTC | 1h 15m |
| 2026-05-25 | CES294 | HIJ → PVG | May 25, 05:25 UTC | May 25, 05:55 UTC | 30m |
| 2026-05-25 | CES293 | PVG → HIJ | May 25, 03:45 UTC | May 25, 04:15 UTC | 30m |
| 2026-05-24 | CES5067 | TYN → BKK | May 24, 09:40 UTC | May 24, 09:55 UTC | 15m |
| 2026-05-22 | CES6050 | SIN → PVG | May 22, 10:45 UTC | May 22, 14:45 UTC | 4h 0m |
| 2026-05-21 | CES726 | HKG → PVG | May 21, 23:55 UTC | May 22, 08:20 UTC | 8h 25m |
| 2026-05-21 | CES725 | PVG → HKG | May 21, 14:55 UTC | May 21, 15:10 UTC | 15m |
| 2026-05-21 | CES725 | PVG → HKG | May 21, 13:55 UTC | May 21, 14:25 UTC | 30m |
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-325S page for operator, model, and routing details .