sensors Mode-S transponder
781D49
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-328P · AIRBUS A-320neo
- Hex
- 781D49
- Octal
- 36016511
- Decimal
- 7,871,817
- Country
- CN
- Tail
- B-328P
- Type
- A20N
- Flights observed
- 46
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 6d ago
Last known position
Country allocation
The ICAO 24-bit address 781D49 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 |
|---|---|---|---|
| CCA480 | - | 4 | 2026-06-26 |
| CCA4340 | Air China | 4 | 2026-05-16 |
| CCA479 | - | 3 | 2026-06-26 |
| CCA4339 | Air China | 3 | 2026-05-11 |
| CCA428 | - | 3 | 2026-06-24 |
| CCA427 | - | 3 | 2026-06-26 |
| CCA4061 | - | 3 | 2026-07-13 |
| CCA426 | - | 2 | 2026-06-22 |
| CCA4174 | - | 2 | 2026-07-10 |
| CCA4172 | - | 2 | 2026-07-11 |
| CCA2742 | Air China | 2 | 2026-06-30 |
| CCA4338 | Air China | 1 | 2026-05-21 |
| CCA4326 | Air China | 1 | 2026-05-22 |
| CCA4325 | Air China | 1 | 2026-05-22 |
| CCA425 | - | 1 | 2026-06-17 |
| CCA4181 | Air China | 1 | 2026-05-06 |
| CCA4173 | - | 1 | 2026-07-10 |
| CCA4171 | - | 1 | 2026-07-10 |
| CCA4118 | Air China | 1 | 2026-04-21 |
| CCA4117 | Air China | 1 | 2026-04-21 |
Recent flights last 46
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CCA4061 | - | Jul 13, 01:30 UTC | Jul 13, 01:45 UTC | 15m |
| 2026-07-12 | CCA4061 | - | Jul 12, 01:40 UTC | Jul 12, 02:05 UTC | 25m |
| 2026-07-11 | CCA4172 | - | Jul 11, 04:30 UTC | Jul 12, 02:05 UTC | 21h 35m |
| 2026-07-10 | CCA4174 | - | Jul 10, 14:50 UTC | Jul 11, 02:10 UTC | 11h 20m |
| 2026-07-10 | CCA4173 | - | Jul 10, 12:15 UTC | Jul 10, 12:35 UTC | 20m |
| 2026-07-10 | CCA4172 | - | Jul 10, 04:05 UTC | Jul 10, 04:30 UTC | 25m |
| 2026-07-10 | CCA4171 | - | Jul 10, 01:45 UTC | Jul 10, 02:10 UTC | 25m |
| 2026-07-08 | CCA2558 | - | Jul 8, 10:55 UTC | Jul 9, 02:20 UTC | 15h 25m |
| 2026-07-06 | CCA2712 | - | Jul 6, 11:05 UTC | Jul 6, 14:20 UTC | 3h 15m |
| 2026-06-30 | CCA2742 | SHE → TFU | Jun 30, 02:00 UTC | Jun 30, 05:45 UTC | 3h 45m |
| 2026-06-26 | CCA480 | - | Jun 26, 18:49 UTC | Jun 26, 20:34 UTC | 1h 45m |
| 2026-06-26 | CCA479 | - | Jun 26, 10:15 UTC | Jun 26, 17:04 UTC | 6h 50m |
| 2026-06-26 | CCA427 | - | Jun 26, 07:35 UTC | Jun 26, 08:15 UTC | 40m |
| 2026-06-25 | CCA2766 | - | Jun 25, 08:34 UTC | Jun 25, 08:55 UTC | 20m |
| 2026-06-24 | CCA428 | - | Jun 24, 09:49 UTC | Jun 24, 10:10 UTC | 20m |
| 2026-06-24 | CCA427 | - | Jun 24, 07:10 UTC | Jun 24, 07:40 UTC | 30m |
| 2026-06-22 | CCA426 | - | Jun 22, 11:50 UTC | Jun 23, 05:34 UTC | 17h 45m |
| 2026-06-19 | CCA480 | - | Jun 19, 18:49 UTC | Jun 19, 20:24 UTC | 1h 35m |
| 2026-06-19 | CCA479 | - | Jun 19, 15:14 UTC | Jun 19, 16:59 UTC | 1h 45m |
| 2026-06-18 | CCA428 | - | Jun 18, 10:50 UTC | Jun 18, 11:15 UTC | 25m |
| 2026-06-17 | CCA426 | - | Jun 17, 12:20 UTC | Jun 18, 08:15 UTC | 19h 55m |
| 2026-06-17 | CCA425 | - | Jun 17, 11:25 UTC | Jun 18, 08:15 UTC | 20h 50m |
| 2026-05-26 | CCA2742 | SHE → TFU | May 26, 01:40 UTC | May 26, 05:40 UTC | 4h 0m |
| 2026-05-22 | CCA4326 | SZX → CTU | May 22, 05:00 UTC | May 22, 05:15 UTC | 15m |
| 2026-05-22 | CCA4325 | CTU → SZX | May 22, 02:55 UTC | May 22, 03:05 UTC | 10m |
| 2026-05-21 | CCA4338 | SZX → CTU | May 21, 06:15 UTC | May 21, 06:30 UTC | 15m |
| 2026-05-20 | CCA4061 | KMG → SHE | May 20, 01:50 UTC | May 20, 02:05 UTC | 15m |
| 2026-05-16 | CCA4340 | SZX → CTU | May 16, 23:25 UTC | May 16, 23:35 UTC | 10m |
| 2026-05-11 | CCA4339 | CTU → SZX | May 11, 14:55 UTC | May 11, 15:05 UTC | 10m |
| 2026-05-09 | CCA4062 | SHE → KMG | May 9, 05:25 UTC | May 9, 05:40 UTC | 15m |
| 2026-05-06 | CCA4174 | PEK → KMG | May 6, 14:20 UTC | May 7, 01:45 UTC | 11h 25m |
| 2026-05-06 | CCA4181 | CTU → PEK | May 6, 11:45 UTC | May 6, 12:15 UTC | 30m |
| 2026-05-03 | CCA4340 | SZX → CTU | May 3, 23:20 UTC | May 3, 23:30 UTC | 10m |
| 2026-05-03 | CCA4339 | CTU → SZX | May 3, 18:05 UTC | May 3, 18:14 UTC | 10m |
| 2026-05-02 | CCA4340 | SZX → CTU | May 2, 23:25 UTC | May 2, 23:35 UTC | 10m |
| 2026-05-02 | CCA4339 | CTU → SZX | May 2, 15:00 UTC | May 2, 15:10 UTC | 10m |
| 2026-04-29 | CCA4116 | PEK → CTU | Apr 29, 07:10 UTC | Apr 29, 07:29 UTC | 20m |
| 2026-04-26 | CCA4340 | SZX → CTU | Apr 26, 23:25 UTC | Apr 26, 23:35 UTC | 10m |
| 2026-04-21 | CCA4118 | PEK → CTU | Apr 21, 14:15 UTC | Apr 21, 14:31 UTC | 15m |
| 2026-04-21 | CCA4117 | CTU → PEK | Apr 21, 11:10 UTC | Apr 21, 11:20 UTC | 10m |
| 2026-04-17 | CCA480 | MNL → TFU | Apr 17, 20:10 UTC | Apr 17, 20:25 UTC | 15m |
| 2026-04-17 | CCA480 | MNL → TFU | Apr 17, 18:45 UTC | Apr 17, 19:20 UTC | 35m |
| 2026-04-17 | CCA479 | TFU → MNL | Apr 17, 15:20 UTC | Apr 17, 16:55 UTC | 1h 35m |
| 2026-04-17 | CCA428 | HKG → CTU | Apr 17, 10:00 UTC | Apr 17, 10:15 UTC | 15m |
| 2026-04-17 | CCA427 | CTU → HKG | Apr 17, 07:20 UTC | Apr 17, 07:40 UTC | 20m |
| 2026-04-16 | CCA2787 | - | Apr 16, 01:35 UTC | Apr 16, 01:45 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-328P page for operator, model, and routing details .