sensors Mode-S transponder
781141
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1421 · BOEING 737-800
- Hex
- 781141
- Octal
- 36010501
- Decimal
- 7,868,737
- Country
- CN
- Tail
- B-1421
- Type
- B738
- Flights observed
- 74
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 5d ago
Last known position
Country allocation
The ICAO 24-bit address 781141 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 |
|---|---|---|---|
| CES5289 | China Eastern Airlines | 7 | 2026-05-29 |
| CES5290 | China Eastern Airlines | 5 | 2026-05-29 |
| CES205 | China Eastern Airlines | 5 | 2026-05-26 |
| CES2578 | - | 4 | 2026-07-12 |
| CES2577 | - | 4 | 2026-07-11 |
| CES206 | China Eastern Airlines | 4 | 2026-05-27 |
| CES2562 | - | 3 | 2026-06-28 |
| CES2561 | - | 3 | 2026-06-27 |
| CES2558 | - | 3 | 2026-07-05 |
| CES2557 | - | 3 | 2026-07-05 |
| CES2466 | - | 3 | 2026-06-24 |
| CES2087 | - | 3 | 2026-06-29 |
| CES6558 | China Eastern Airlines | 2 | 2026-05-29 |
| CES6331 | - | 2 | 2026-07-03 |
| CES6327 | China Eastern Airlines | 2 | 2026-06-01 |
| CES2573 | China Eastern Airlines | 2 | 2026-06-27 |
| CES2478 | - | 2 | 2026-07-01 |
| CES2088 | - | 2 | 2026-06-29 |
| CES7435 | - | 1 | 2026-07-08 |
| CES6562 | China Eastern Airlines | 1 | 2026-05-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-12 | CES2578 | - | Jul 12, 19:15 UTC | Jul 12, 23:00 UTC | 3h 45m |
| 2026-07-11 | CES2577 | - | Jul 11, 14:40 UTC | Jul 12, 05:55 UTC | 15h 15m |
| 2026-07-10 | CES2578 | - | Jul 10, 07:25 UTC | Jul 10, 10:55 UTC | 3h 30m |
| 2026-07-10 | CES2577 | - | Jul 10, 02:15 UTC | Jul 10, 05:30 UTC | 3h 15m |
| 2026-07-08 | CES7435 | - | Jul 8, 12:10 UTC | Jul 8, 12:20 UTC | 10m |
| 2026-07-06 | CES2456 | - | Jul 6, 14:50 UTC | Jul 6, 15:00 UTC | 10m |
| 2026-07-05 | CES2558 | - | Jul 5, 15:35 UTC | Jul 5, 15:50 UTC | 15m |
| 2026-07-05 | CES2557 | - | Jul 5, 13:25 UTC | Jul 5, 13:50 UTC | 25m |
| 2026-07-05 | CES2546 | - | Jul 5, 02:25 UTC | Jul 5, 05:55 UTC | 3h 30m |
| 2026-07-03 | CES6332 | - | Jul 3, 13:45 UTC | Jul 3, 14:30 UTC | 45m |
| 2026-07-03 | CES6331 | - | Jul 3, 11:10 UTC | Jul 3, 11:30 UTC | 20m |
| 2026-07-01 | CES6319 | - | Jul 1, 08:35 UTC | Jul 2, 04:15 UTC | 19h 40m |
| 2026-07-01 | CES2478 | - | Jul 1, 04:15 UTC | Jul 1, 04:25 UTC | 10m |
| 2026-07-01 | CES2477 | - | Jul 1, 02:40 UTC | Jul 1, 02:50 UTC | 10m |
| 2026-06-29 | CES2088 | - | Jun 29, 10:55 UTC | Jun 29, 11:20 UTC | 25m |
| 2026-06-29 | CES2087 | - | Jun 29, 08:35 UTC | Jun 29, 09:20 UTC | 45m |
| 2026-06-28 | CES2558 | - | Jun 28, 16:49 UTC | Jun 28, 17:00 UTC | 10m |
| 2026-06-28 | CES2557 | - | Jun 28, 14:54 UTC | Jun 28, 15:09 UTC | 15m |
| 2026-06-28 | CES2562 | - | Jun 28, 03:55 UTC | Jun 28, 04:35 UTC | 40m |
| 2026-06-27 | CES2561 | - | Jun 27, 19:39 UTC | Jun 28, 02:14 UTC | 6h 35m |
| 2026-06-27 | CES2573 | WUH → HAN | Jun 27, 17:25 UTC | Jun 27, 17:55 UTC | 30m |
| 2026-06-24 | CES2466 | - | Jun 24, 06:29 UTC | Jun 24, 06:55 UTC | 25m |
| 2026-06-19 | CES2562 | - | Jun 19, 05:00 UTC | Jun 19, 05:49 UTC | 50m |
| 2026-06-19 | CES2561 | - | Jun 19, 03:05 UTC | Jun 19, 04:00 UTC | 55m |
| 2026-06-17 | CES2527 | WUH → SYX | Jun 17, 12:55 UTC | Jun 17, 13:20 UTC | 25m |
| 2026-06-16 | CES255R | - | Jun 16, 01:25 UTC | Jun 16, 01:40 UTC | 15m |
| 2026-06-15 | CES2557 | - | Jun 15, 22:40 UTC | Jun 15, 22:54 UTC | 15m |
| 2026-06-15 | CES2478 | - | Jun 15, 07:29 UTC | Jun 15, 07:45 UTC | 15m |
| 2026-06-14 | CES2578 | SZX → WUH | Jun 14, 07:30 UTC | Jun 14, 11:05 UTC | 3h 35m |
| 2026-06-13 | CES2577 | WUH → SIN | Jun 13, 14:35 UTC | Jun 14, 05:20 UTC | 14h 45m |
| 2026-06-12 | CES2562 | KHH → WUH | Jun 12, 04:00 UTC | Jun 12, 04:50 UTC | 50m |
| 2026-06-11 | CES2561 | WUH → KHH | Jun 11, 19:35 UTC | Jun 12, 02:15 UTC | 6h 41m |
| 2026-06-11 | CES2573 | WUH → HAN | Jun 11, 17:25 UTC | Jun 11, 17:45 UTC | 20m |
| 2026-06-11 | CES2088 | TPE → WUH | Jun 11, 10:50 UTC | Jun 11, 11:35 UTC | 45m |
| 2026-06-11 | CES2087 | WUH → TPE | Jun 11, 08:35 UTC | Jun 11, 09:25 UTC | 50m |
| 2026-06-10 | CES2087 | WUH → TPE | Jun 10, 10:50 UTC | Jun 11, 09:25 UTC | 22h 35m |
| 2026-06-10 | CES2578 | SZX → WUH | Jun 10, 07:35 UTC | Jun 10, 11:00 UTC | 3h 25m |
| 2026-06-10 | CES2577 | WUH → SIN | Jun 10, 02:25 UTC | Jun 10, 05:35 UTC | 3h 10m |
| 2026-06-01 | CES6328 | ZHA → PVG | Jun 1, 06:05 UTC | Jun 1, 07:15 UTC | 1h 10m |
| 2026-06-01 | CES6327 | PVG → ZHA | Jun 1, 02:40 UTC | Jun 1, 03:00 UTC | 20m |
| 2026-05-29 | CES6558 | DAT → PVG | May 29, 15:00 UTC | May 30, 05:45 UTC | 14h 45m |
| 2026-05-29 | CES5290 | ZUH → PVG | May 29, 07:30 UTC | May 29, 08:05 UTC | 35m |
| 2026-05-29 | CES5289 | PVG → ZUH | May 29, 04:30 UTC | May 29, 05:45 UTC | 1h 15m |
| 2026-05-28 | CES5290 | ZUH → PVG | May 28, 06:55 UTC | May 28, 07:10 UTC | 15m |
| 2026-05-28 | CES5289 | PVG → ZUH | May 28, 05:10 UTC | May 28, 05:30 UTC | 20m |
| 2026-05-27 | CES5076 | HAN → PVG | May 27, 19:30 UTC | May 28, 04:20 UTC | 8h 50m |
| 2026-05-27 | CES206 | CNX → PVG | May 27, 08:00 UTC | May 27, 18:00 UTC | 10h 0m |
| 2026-05-26 | CES205 | PVG → CNX | May 26, 13:50 UTC | May 27, 06:09 UTC | 16h 20m |
| 2026-05-26 | CES205 | PVG → CNX | May 26, 06:29 UTC | May 27, 06:09 UTC | 23h 40m |
| 2026-05-26 | CES6562 | HRB → PVG | May 26, 05:10 UTC | May 26, 14:35 UTC | 9h 25m |
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-1421 page for operator, model, and routing details .