sensors Mode-S transponder
781FF6
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32FP · AIRBUS A-350-900
- Hex
- 781FF6
- Octal
- 36017766
- Decimal
- 7,872,502
- Country
- CN
- Tail
- B-32FP
- Type
- A359
- Flights observed
- 184
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 8h ago
Last known position
Country allocation
The ICAO 24-bit address 781FF6 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 |
|---|---|---|---|
| CES785 | China Eastern Airlines | 16 | 2026-06-21 |
| CES582 | China Eastern Airlines | 12 | 2026-05-29 |
| CES249 | China Eastern Airlines | 12 | 2026-07-05 |
| CES786 | - | 10 | 2026-06-22 |
| CES581 | China Eastern Airlines | 10 | 2026-05-28 |
| CES250 | China Eastern Airlines | 10 | 2026-07-06 |
| CES243 | China Eastern Airlines | 10 | 2026-06-10 |
| CES710 | - | 8 | 2026-07-13 |
| CES244 | China Eastern Airlines | 7 | 2026-06-11 |
| CES787 | China Eastern Airlines | 6 | 2026-06-15 |
| CES7235 | China Eastern Airlines | 6 | 2026-06-23 |
| CES709 | - | 6 | 2026-07-12 |
| CES255 | - | 6 | 2026-06-24 |
| CES7236 | China Eastern Airlines | 5 | 2026-06-23 |
| CES562 | - | 5 | 2026-06-13 |
| CES561 | China Eastern Airlines | 5 | 2026-05-16 |
| CES752 | - | 4 | 2026-07-02 |
| CES751 | - | 4 | 2026-07-02 |
| CES736 | China Eastern Airlines | 4 | 2026-05-01 |
| CES217 | China Eastern Airlines | 4 | 2026-05-12 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | CES524 | - | Jul 14, 05:35 UTC | Jul 14, 07:05 UTC | 1h 30m |
| 2026-07-13 | CES710 | - | Jul 13, 09:50 UTC | Jul 14, 04:00 UTC | 18h 10m |
| 2026-07-12 | CES709 | - | Jul 12, 20:10 UTC | Jul 13, 07:20 UTC | 11h 10m |
| 2026-07-12 | CES709 | - | Jul 12, 09:05 UTC | Jul 13, 07:20 UTC | 22h 15m |
| 2026-07-12 | CES782 | - | Jul 12, 00:35 UTC | Jul 12, 23:30 UTC | 22h 55m |
| 2026-07-11 | CES524 | NRT → ADL | Jul 11, 05:31 UTC | Jul 11, 21:50 UTC | 16h 20m |
| 2026-07-11 | CES523 | - | Jul 11, 02:15 UTC | Jul 11, 04:01 UTC | 1h 45m |
| 2026-07-06 | CES250 | BCN → PVG | Jul 6, 09:25 UTC | Jul 6, 13:00 UTC | 3h 35m |
| 2026-07-05 | CES249 | PVG → BCN | Jul 5, 22:05 UTC | Jul 6, 05:35 UTC | 7h 30m |
| 2026-07-05 | CES249 | PVG → BCN | Jul 5, 07:35 UTC | Jul 6, 05:35 UTC | 22h 0m |
| 2026-07-05 | CES249 | PVG → BCN | Jul 5, 06:25 UTC | Jul 6, 05:30 UTC | 23h 5m |
| 2026-07-05 | CES249 | PVG → BCN | Jul 5, 03:20 UTC | Jul 6, 01:30 UTC | 22h 10m |
| 2026-07-05 | CES782 | - | Jul 5, 00:20 UTC | Jul 5, 22:45 UTC | 22h 25m |
| 2026-07-04 | CES781 | - | Jul 4, 04:10 UTC | Jul 4, 22:30 UTC | 18h 20m |
| 2026-07-02 | CES752 | - | Jul 2, 19:45 UTC | Jul 3, 02:10 UTC | 6h 25m |
| 2026-07-02 | CES751 | - | Jul 2, 09:00 UTC | Jul 2, 16:30 UTC | 7h 30m |
| 2026-07-01 | CES751 | - | Jul 1, 15:40 UTC | Jul 2, 15:30 UTC | 23h 50m |
| 2026-07-01 | CES751 | - | Jul 1, 13:35 UTC | Jul 2, 12:45 UTC | 23h 10m |
| 2026-07-01 | CES250 | BCN → PVG | Jul 1, 11:35 UTC | Jul 2, 11:25 UTC | 23h 50m |
| 2026-07-01 | CES250 | BCN → PVG | Jul 1, 09:35 UTC | Jul 2, 09:30 UTC | 23h 55m |
| 2026-07-01 | CES250 | BCN → PVG | Jul 1, 09:25 UTC | Jul 1, 16:25 UTC | 7h 0m |
| 2026-06-30 | CES249 | PVG → BCN | Jun 30, 18:35 UTC | Jul 1, 05:45 UTC | 11h 10m |
| 2026-06-30 | CES5342 | - | Jun 30, 06:10 UTC | Jun 30, 06:20 UTC | 10m |
| 2026-06-30 | CES5333 | - | Jun 30, 04:05 UTC | Jun 30, 04:25 UTC | 20m |
| 2026-06-29 | CES5350 | - | Jun 29, 10:50 UTC | Jun 29, 10:59 UTC | 10m |
| 2026-06-29 | CES5341 | - | Jun 29, 07:44 UTC | Jun 29, 08:24 UTC | 40m |
| 2026-06-26 | CES5128 | PEK → SHA | Jun 26, 14:19 UTC | Jun 26, 14:35 UTC | 15m |
| 2026-06-25 | CES256 | - | Jun 25, 13:35 UTC | Jun 25, 19:54 UTC | 6h 20m |
| 2026-06-24 | CES255 | - | Jun 24, 19:24 UTC | Jun 25, 04:49 UTC | 9h 25m |
| 2026-06-24 | CES255 | - | Jun 24, 05:34 UTC | Jun 25, 04:49 UTC | 23h 15m |
| 2026-06-24 | CES255 | - | Jun 24, 05:05 UTC | Jun 25, 03:29 UTC | 22h 25m |
| 2026-06-24 | CES255 | - | Jun 24, 01:34 UTC | Jun 25, 01:30 UTC | 23h 55m |
| 2026-06-23 | CES7236 | HAN → PVG | Jun 23, 23:34 UTC | Jun 24, 23:10 UTC | 23h 35m |
| 2026-06-23 | CES7236 | HAN → PVG | Jun 23, 22:15 UTC | Jun 24, 19:49 UTC | 21h 35m |
| 2026-06-23 | CES7235 | PVG → HAN | Jun 23, 08:04 UTC | Jun 23, 18:29 UTC | 10h 25m |
| 2026-06-22 | CES7235 | PVG → HAN | Jun 22, 15:45 UTC | Jun 23, 15:30 UTC | 23h 45m |
| 2026-06-22 | CES7235 | PVG → HAN | Jun 22, 13:35 UTC | Jun 23, 11:49 UTC | 22h 15m |
| 2026-06-22 | CES786 | - | Jun 22, 11:35 UTC | Jun 23, 11:29 UTC | 23h 55m |
| 2026-06-22 | CES786 | - | Jun 22, 09:49 UTC | Jun 23, 08:30 UTC | 22h 40m |
| 2026-06-21 | CES785 | PVG → VCE | Jun 21, 19:00 UTC | Jun 22, 04:44 UTC | 9h 45m |
| 2026-06-21 | CES785 | PVG → VCE | Jun 21, 07:34 UTC | Jun 22, 04:44 UTC | 21h 10m |
| 2026-06-21 | CES785 | PVG → VCE | Jun 21, 07:04 UTC | Jun 22, 04:44 UTC | 21h 40m |
| 2026-06-21 | CES785 | PVG → VCE | Jun 21, 03:49 UTC | Jun 22, 03:30 UTC | 23h 40m |
| 2026-06-21 | CES782 | - | Jun 21, 00:49 UTC | Jun 21, 22:34 UTC | 21h 45m |
| 2026-06-20 | CES781 | - | Jun 20, 12:34 UTC | Jun 20, 21:19 UTC | 8h 45m |
| 2026-06-19 | CES568 | - | Jun 19, 09:24 UTC | Jun 19, 13:09 UTC | 3h 45m |
| 2026-06-18 | CES256 | - | Jun 18, 12:30 UTC | Jun 19, 04:19 UTC | 15h 49m |
| 2026-06-17 | CES255 | - | Jun 17, 23:00 UTC | Jun 18, 05:45 UTC | 6h 45m |
| 2026-06-17 | CES255 | - | Jun 17, 05:35 UTC | Jun 18, 05:30 UTC | 23h 55m |
| 2026-06-17 | CES523 | - | Jun 17, 02:15 UTC | Jun 17, 03:55 UTC | 1h 40m |
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-32FP page for operator, model, and routing details .