sensors Mode-S transponder
78161D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-209E · BOEING 787-9 Dreamliner
- Hex
- 78161D
- Octal
- 36013035
- Decimal
- 7,869,981
- Country
- CN
- Tail
- B-209E
- Type
- B789
- Flights observed
- 177
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 7h ago
Current position
Country allocation
The ICAO 24-bit address 78161D 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 |
|---|---|---|---|
| CSN377 | - | 14 | 2026-06-28 |
| CSN354 | China Southern Airlines | 14 | 2026-05-26 |
| CSN3092 | China Southern Airlines | 14 | 2026-06-10 |
| CSN331 | - | 11 | 2026-07-13 |
| CSN3091 | China Southern Airlines | 10 | 2026-06-10 |
| CSN391 | - | 9 | 2026-07-02 |
| CSN378 | - | 9 | 2026-06-28 |
| CSN392 | - | 8 | 2026-07-07 |
| CSN332 | - | 8 | 2026-06-30 |
| CSN353 | China Southern Airlines | 7 | 2026-05-26 |
| CSN320 | - | 6 | 2026-07-03 |
| CSN8069 | China Southern Airlines | 5 | 2026-06-09 |
| CSN6043 | - | 5 | 2026-07-09 |
| CSN8049 | - | 4 | 2026-07-06 |
| CSN664 | - | 4 | 2026-06-18 |
| CSN650 | China Southern Airlines | 4 | 2026-05-16 |
| CSN633 | - | 4 | 2026-06-21 |
| CSN649 | China Southern Airlines | 3 | 2026-05-15 |
| CSN6044 | - | 3 | 2026-07-11 |
| CSN319 | - | 3 | 2026-07-03 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CSN331 | - | Jul 13, 22:15 UTC | Jul 14, 04:35 UTC | 6h 20m |
| 2026-07-12 | CSN3082 | - | Jul 12, 09:05 UTC | Jul 12, 09:20 UTC | 15m |
| 2026-07-12 | CSN3081 | - | Jul 12, 06:45 UTC | Jul 12, 07:01 UTC | 15m |
| 2026-07-11 | CSN6044 | - | Jul 11, 03:01 UTC | Jul 11, 03:10 UTC | 10m |
| 2026-07-10 | CSN6044 | - | Jul 10, 17:40 UTC | Jul 10, 21:30 UTC | 3h 50m |
| 2026-07-09 | CSN6043 | - | Jul 9, 06:10 UTC | Jul 9, 22:20 UTC | 16h 10m |
| 2026-07-09 | CSN349 | - | Jul 9, 03:55 UTC | Jul 9, 04:15 UTC | 20m |
| 2026-07-08 | CSN3522 | - | Jul 8, 06:15 UTC | Jul 8, 06:50 UTC | 35m |
| 2026-07-07 | CSN392 | - | Jul 7, 17:35 UTC | Jul 7, 18:45 UTC | 1h 10m |
| 2026-07-06 | CSN8050 | - | Jul 6, 21:20 UTC | Jul 7, 15:30 UTC | 18h 10m |
| 2026-07-06 | CSN8050 | LGW → DAC | Jul 6, 20:55 UTC | Jul 7, 15:30 UTC | 18h 35m |
| 2026-07-06 | CSN8049 | - | Jul 6, 11:50 UTC | Jul 6, 18:35 UTC | 6h 45m |
| 2026-07-05 | CSN8049 | - | Jul 5, 21:20 UTC | Jul 6, 18:35 UTC | 21h 15m |
| 2026-07-05 | CSN8049 | - | Jul 5, 19:50 UTC | Jul 6, 18:35 UTC | 22h 45m |
| 2026-07-05 | CSN8049 | - | Jul 5, 17:55 UTC | Jul 6, 17:15 UTC | 23h 20m |
| 2026-07-04 | CSN6043 | - | Jul 4, 07:15 UTC | Jul 4, 22:25 UTC | 15h 10m |
| 2026-07-04 | CSN337 | - | Jul 4, 05:15 UTC | Jul 4, 05:50 UTC | 35m |
| 2026-07-03 | CSN320 | - | Jul 3, 22:40 UTC | Jul 3, 22:55 UTC | 15m |
| 2026-07-03 | CSN320 | - | Jul 3, 15:40 UTC | Jul 3, 20:45 UTC | 5h 5m |
| 2026-07-03 | CSN319 | - | Jul 3, 08:55 UTC | Jul 3, 14:00 UTC | 5h 5m |
| 2026-07-02 | CSN392 | - | Jul 2, 17:35 UTC | Jul 2, 19:40 UTC | 2h 5m |
| 2026-07-02 | CSN391 | - | Jul 2, 12:20 UTC | Jul 2, 15:25 UTC | 3h 5m |
| 2026-07-02 | CSN350 | - | Jul 2, 06:25 UTC | Jul 2, 09:00 UTC | 2h 35m |
| 2026-07-02 | CSN349 | - | Jul 2, 01:30 UTC | Jul 2, 04:45 UTC | 3h 15m |
| 2026-06-30 | CSN332 | - | Jun 30, 22:55 UTC | Jun 30, 23:05 UTC | 10m |
| 2026-06-30 | CSN332 | - | Jun 30, 12:30 UTC | Jun 30, 18:20 UTC | 5h 50m |
| 2026-06-29 | CSN331 | - | Jun 29, 21:54 UTC | Jun 30, 04:35 UTC | 6h 41m |
| 2026-06-28 | CSN331 | - | Jun 28, 23:39 UTC | Jun 29, 22:39 UTC | 23h 0m |
| 2026-06-28 | CSN378 | - | Jun 28, 19:20 UTC | Jun 29, 00:10 UTC | 4h 50m |
| 2026-06-28 | CSN377 | - | Jun 28, 11:04 UTC | Jun 28, 17:00 UTC | 5h 55m |
| 2026-06-27 | CSN377 | - | Jun 27, 15:19 UTC | Jun 28, 15:14 UTC | 23h 55m |
| 2026-06-27 | CSN332 | - | Jun 27, 13:20 UTC | Jun 28, 13:14 UTC | 23h 55m |
| 2026-06-27 | CSN332 | - | Jun 27, 12:19 UTC | Jun 28, 11:14 UTC | 22h 55m |
| 2026-06-26 | CSN331 | - | Jun 26, 22:10 UTC | Jun 27, 04:15 UTC | 6h 5m |
| 2026-06-26 | CSN3082 | - | Jun 26, 09:10 UTC | Jun 26, 10:39 UTC | 1h 30m |
| 2026-06-26 | CSN3081 | - | Jun 26, 05:24 UTC | Jun 26, 06:50 UTC | 1h 25m |
| 2026-06-23 | CSN378 | - | Jun 23, 19:19 UTC | Jun 23, 22:55 UTC | 3h 35m |
| 2026-06-22 | CSN377 | - | Jun 22, 19:19 UTC | Jun 23, 15:30 UTC | 20h 10m |
| 2026-06-22 | CSN377 | - | Jun 22, 18:09 UTC | Jun 23, 15:30 UTC | 21h 20m |
| 2026-06-22 | CSN377 | - | Jun 22, 16:50 UTC | Jun 23, 15:15 UTC | 22h 25m |
| 2026-06-21 | CSN633 | - | Jun 21, 17:50 UTC | Jun 21, 22:24 UTC | 4h 35m |
| 2026-06-19 | CSN304 | - | Jun 19, 21:34 UTC | Jun 20, 03:49 UTC | 6h 15m |
| 2026-06-19 | CSN303 | - | Jun 19, 10:50 UTC | Jun 19, 17:55 UTC | 7h 5m |
| 2026-06-18 | CSN664 | - | Jun 18, 09:25 UTC | Jun 18, 09:45 UTC | 20m |
| 2026-06-18 | CSN664 | - | Jun 18, 01:10 UTC | Jun 18, 08:35 UTC | 7h 25m |
| 2026-06-17 | CSN663 | - | Jun 17, 14:45 UTC | Jun 17, 22:20 UTC | 7h 35m |
| 2026-06-16 | CSN378 | MAD → CAN | Jun 16, 19:40 UTC | Jun 17, 00:30 UTC | 4h 51m |
| 2026-06-16 | CSN377 | CAN → MAD | Jun 16, 10:09 UTC | Jun 16, 15:45 UTC | 5h 35m |
| 2026-06-14 | CSN6044 | - | Jun 14, 17:45 UTC | Jun 14, 21:00 UTC | 3h 15m |
| 2026-06-13 | CSN6043 | CSX → NBO | Jun 13, 03:20 UTC | Jun 13, 22:10 UTC | 18h 49m |
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-209E page for operator, model, and routing details .