sensors Mode-S transponder
7802A3
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-2419 · AIRBUS A-321
- Hex
- 7802A3
- Octal
- 36001243
- Decimal
- 7,864,995
- Country
- CN
- Tail
- B-2419
- Type
- A321
- Flights observed
- 20
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- Jul 26, 06:40 UTC
Last known position
Country allocation
The ICAO 24-bit address 7802A3 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CES6940 | China Eastern Airlines | 2 | 2026-07-25 |
| CES2109 | China Eastern Airlines | 2 | 2026-07-26 |
| CES6939 | China Eastern Airlines | 1 | 2026-07-25 |
| CES6874 | China Eastern Airlines | 1 | 2026-07-25 |
| CES6873 | China Eastern Airlines | 1 | 2026-07-25 |
| CES6296 | China Eastern Airlines | 1 | 2026-07-23 |
| CES5664 | - | 1 | 2026-06-19 |
| CES5635 | - | 1 | 2026-06-14 |
| CES5353 | - | 1 | 2026-06-20 |
| CES5346 | - | 1 | 2026-06-28 |
| CES5337 | - | 1 | 2026-06-28 |
| CES5336 | - | 1 | 2026-06-21 |
| CES5310 | - | 1 | 2026-07-03 |
| CES5166 | China Eastern Airlines | 1 | 2026-06-08 |
| CES5120 | - | 1 | 2026-07-13 |
| CES5110 | China Eastern Airlines | 1 | 2026-04-28 |
| CES2122 | China Eastern Airlines | 1 | 2026-06-10 |
Recent flights last 20
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CES2109 | XIY → PKX | Jul 26, 06:25 UTC | Jul 26, 06:40 UTC | 16m |
| 2026-07-25 | CES6940 | NKG → TYN | Jul 25, 12:15 UTC | Jul 25, 12:30 UTC | 15m |
| 2026-07-25 | CES6939 | TYN → NKG | Jul 25, 08:00 UTC | Jul 25, 08:10 UTC | 10m |
| 2026-07-25 | CES6874 | SHA → PKX | Jul 25, 05:25 UTC | Jul 25, 05:35 UTC | 10m |
| 2026-07-25 | CES6873 | PKX → SHA | Jul 25, 01:10 UTC | Jul 25, 01:25 UTC | 15m |
| 2026-07-24 | CES2109 | XIY → PKX | Jul 24, 06:15 UTC | Jul 24, 06:25 UTC | 10m |
| 2026-07-23 | CES6296 | BAR → JGS | Jul 23, 06:00 UTC | Jul 23, 06:15 UTC | 15m |
| 2026-07-22 | CES6940 | NKG → TYN | Jul 22, 15:00 UTC | Jul 22, 15:20 UTC | 20m |
| 2026-07-13 | CES5120 | - | Jul 13, 09:50 UTC | Jul 13, 10:00 UTC | 10m |
| 2026-07-03 | CES5310 | - | Jul 3, 10:30 UTC | Jul 3, 10:50 UTC | 20m |
| 2026-06-28 | CES5346 | - | Jun 28, 09:39 UTC | Jun 28, 09:55 UTC | 15m |
| 2026-06-28 | CES5337 | - | Jun 28, 07:29 UTC | Jun 28, 08:09 UTC | 40m |
| 2026-06-21 | CES5336 | - | Jun 21, 02:45 UTC | Jun 21, 03:00 UTC | 15m |
| 2026-06-20 | CES5353 | - | Jun 20, 12:24 UTC | Jun 20, 12:34 UTC | 10m |
| 2026-06-19 | CES5664 | - | Jun 19, 04:29 UTC | Jun 19, 04:54 UTC | 25m |
| 2026-06-14 | CES5635 | - | Jun 14, 00:55 UTC | Jun 14, 01:30 UTC | 35m |
| 2026-06-12 | - | - | Jun 12, 05:30 UTC | Jun 12, 05:45 UTC | 15m |
| 2026-06-10 | CES2122 | PKX → XIY | Jun 10, 13:20 UTC | Jun 10, 13:30 UTC | 10m |
| 2026-06-08 | CES5166 | PEK → SHA | Jun 8, 14:40 UTC | Jun 8, 14:50 UTC | 10m |
| 2026-04-28 | CES5110 | PEK → SHA | Apr 28, 04:10 UTC | Apr 28, 04:20 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-2419 page for operator, model, and routing details .