sensors Mode-S transponder
781044
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1536 · BOEING 737-800
- Hex
- 781044
- Octal
- 36010104
- Decimal
- 7,868,484
- Country
- CN
- Tail
- B-1536
- Type
- B738
- Flights observed
- 31
- Distinct callsigns
- 18
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 781044 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CES2578 | China Eastern Airlines | 6 | 2026-06-08 |
| CES2577 | China Eastern Airlines | 6 | 2026-06-07 |
| CES2087 | China Eastern Airlines | 4 | 2026-05-28 |
| CES6088 | China Eastern Airlines | 1 | 2026-04-27 |
| CES5290 | China Eastern Airlines | 1 | 2026-06-01 |
| CES5289 | China Eastern Airlines | 1 | 2026-06-01 |
| CES5076 | China Eastern Airlines | 1 | 2026-05-31 |
| CES2637 | - | 1 | 2026-05-04 |
| CES2562 | China Eastern Airlines | 1 | 2026-05-29 |
| CES2561 | China Eastern Airlines | 1 | 2026-05-28 |
| CES2558 | China Eastern Airlines | 1 | 2026-04-14 |
| CES2557 | China Eastern Airlines | 1 | 2026-04-14 |
| CES2546 | - | 1 | 2026-05-26 |
| CES2527 | China Eastern Airlines | 1 | 2026-06-02 |
| CES2478 | China Eastern Airlines | 1 | 2026-05-30 |
| CES2466 | - | 1 | 2026-04-20 |
| CES2088 | China Eastern Airlines | 1 | 2026-05-18 |
| CES206 | China Eastern Airlines | 1 | 2026-05-31 |
Recent flights last 31
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-08 | CES2578 | SZX → WUH | Jun 8, 10:10 UTC | Jun 9, 05:55 UTC | 19h 45m |
| 2026-06-08 | CES2578 | SZX → WUH | Jun 8, 07:30 UTC | Jun 9, 05:55 UTC | 22h 25m |
| 2026-06-07 | CES2577 | WUH → SIN | Jun 7, 11:05 UTC | Jun 8, 05:50 UTC | 18h 45m |
| 2026-06-07 | CES2577 | WUH → SIN | Jun 7, 07:20 UTC | Jun 8, 05:50 UTC | 22h 30m |
| 2026-06-06 | CES2577 | WUH → SIN | Jun 6, 14:40 UTC | Jun 7, 05:25 UTC | 14h 45m |
| 2026-06-02 | CES2527 | WUH → SYX | Jun 2, 13:20 UTC | Jun 2, 15:40 UTC | 2h 20m |
| 2026-06-01 | CES5290 | ZUH → PVG | Jun 1, 08:40 UTC | Jun 1, 08:55 UTC | 15m |
| 2026-06-01 | CES5289 | PVG → ZUH | Jun 1, 06:35 UTC | Jun 1, 07:00 UTC | 25m |
| 2026-05-31 | CES5076 | HAN → PVG | May 31, 19:25 UTC | May 31, 19:50 UTC | 25m |
| 2026-05-31 | CES206 | CNX → PVG | May 31, 08:25 UTC | May 31, 17:50 UTC | 9h 25m |
| 2026-05-30 | CES2478 | SZX → WUH | May 30, 03:10 UTC | May 30, 07:25 UTC | 4h 15m |
| 2026-05-29 | CES2562 | KHH → WUH | May 29, 04:05 UTC | May 29, 04:50 UTC | 45m |
| 2026-05-28 | CES2561 | WUH → KHH | May 28, 10:50 UTC | May 29, 02:25 UTC | 15h 35m |
| 2026-05-28 | CES2087 | WUH → TPE | May 28, 08:40 UTC | May 28, 09:30 UTC | 50m |
| 2026-05-26 | CES2546 | - | May 26, 02:19 UTC | May 26, 05:54 UTC | 3h 35m |
| 2026-05-18 | CES2088 | TPE → WUH | May 18, 10:45 UTC | May 18, 11:10 UTC | 25m |
| 2026-05-18 | CES2087 | WUH → TPE | May 18, 08:25 UTC | May 18, 09:10 UTC | 45m |
| 2026-05-17 | CES2087 | WUH → TPE | May 17, 11:05 UTC | May 18, 09:10 UTC | 22h 5m |
| 2026-05-17 | CES2087 | WUH → TPE | May 17, 10:45 UTC | May 18, 09:00 UTC | 22h 15m |
| 2026-05-17 | CES2578 | SZX → WUH | May 17, 07:35 UTC | May 17, 11:05 UTC | 3h 30m |
| 2026-05-17 | CES2577 | WUH → SIN | May 17, 02:25 UTC | May 17, 05:35 UTC | 3h 10m |
| 2026-05-04 | CES2637 | - | May 4, 06:40 UTC | May 4, 09:55 UTC | 3h 15m |
| 2026-05-01 | CES2578 | SZX → WUH | May 1, 07:45 UTC | May 1, 11:15 UTC | 3h 30m |
| 2026-05-01 | CES2577 | WUH → SIN | May 1, 02:15 UTC | May 1, 05:30 UTC | 3h 15m |
| 2026-04-27 | CES6088 | BKK → KMG | Apr 27, 06:40 UTC | Apr 27, 07:00 UTC | 20m |
| 2026-04-26 | CES2578 | SZX → WUH | Apr 26, 09:05 UTC | Apr 27, 05:00 UTC | 19h 55m |
| 2026-04-26 | CES2578 | SZX → WUH | Apr 26, 07:40 UTC | Apr 27, 05:00 UTC | 21h 20m |
| 2026-04-26 | CES2577 | WUH → SIN | Apr 26, 02:30 UTC | Apr 26, 06:05 UTC | 3h 35m |
| 2026-04-20 | CES2466 | - | Apr 20, 06:35 UTC | Apr 20, 06:50 UTC | 15m |
| 2026-04-14 | CES2558 | SZX → WUH | Apr 14, 15:25 UTC | Apr 14, 15:40 UTC | 15m |
| 2026-04-14 | CES2557 | WUH → SZX | Apr 14, 13:30 UTC | Apr 14, 13:40 UTC | 10m |
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-1536 page for operator, model, and routing details .