sensors Mode-S transponder
780B1A
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5797 · BOEING 737-800
- Hex
- 780B1A
- Octal
- 36005432
- Decimal
- 7,867,162
- Country
- CN
- Tail
- B-5797
- Type
- B738
- Flights observed
- 26
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- 23h ago
Current position
Country allocation
The ICAO 24-bit address 780B1A 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 |
|---|---|---|---|
| CHH7468 | Hainan Airlines | 3 | 2026-05-10 |
| CHH7467 | Hainan Airlines | 3 | 2026-04-28 |
| CHH7741 | Hainan Airlines | 2 | 2026-05-16 |
| CHH7648 | Hainan Airlines | 2 | 2026-05-20 |
| CHH7384 | Hainan Airlines | 2 | 2026-06-07 |
| CHH7374 | Hainan Airlines | 2 | 2026-06-04 |
| CHH7749 | Hainan Airlines | 1 | 2026-06-08 |
| CHH7726 | Hainan Airlines | 1 | 2026-06-10 |
| CHH7721 | Hainan Airlines | 1 | 2026-06-09 |
| CHH7698 | Hainan Airlines | 1 | 2026-05-19 |
| CHH7674 | - | 1 | 2026-06-11 |
| CHH7673 | - | 1 | 2026-06-11 |
| CHH7311 | Hainan Airlines | 1 | 2026-06-03 |
| CHH7308 | Hainan Airlines | 1 | 2026-06-02 |
| CHH7306 | Hainan Airlines | 1 | 2026-06-05 |
| CHH7045 | Hainan Airlines | 1 | 2026-05-21 |
| CHH7016 | Hainan Airlines | 1 | 2026-05-12 |
Recent flights last 26
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-11 | CHH7674 | - | Jun 11, 14:05 UTC | Jun 11, 14:20 UTC | 15m |
| 2026-06-11 | CHH7673 | - | Jun 11, 09:35 UTC | Jun 11, 09:45 UTC | 10m |
| 2026-06-10 | CHH7726 | PVG → SZX | Jun 10, 01:30 UTC | Jun 10, 01:50 UTC | 20m |
| 2026-06-09 | CHH7721 | SZX → PVG | Jun 9, 02:35 UTC | Jun 9, 02:45 UTC | 10m |
| 2026-06-08 | CHH7749 | SYX → SZX | Jun 8, 15:55 UTC | Jun 8, 16:10 UTC | 15m |
| 2026-06-07 | CHH7384 | HGH → SYX | Jun 7, 14:20 UTC | Jun 8, 04:40 UTC | 14h 20m |
| 2026-06-07 | CHH7384 | HGH → SYX | Jun 7, 10:05 UTC | Jun 8, 04:40 UTC | 18h 35m |
| 2026-06-05 | CHH7306 | TFU → SYX | Jun 5, 01:00 UTC | Jun 5, 07:30 UTC | 6h 30m |
| 2026-06-04 | CHH7374 | HFE → SYX | Jun 4, 01:45 UTC | Jun 4, 14:30 UTC | 12h 45m |
| 2026-06-03 | CHH7374 | HFE → SYX | Jun 3, 15:15 UTC | Jun 4, 14:30 UTC | 23h 15m |
| 2026-06-03 | CHH7311 | SYX → KHN | Jun 3, 01:35 UTC | Jun 3, 15:55 UTC | 14h 20m |
| 2026-06-02 | CHH7308 | CAN → SYX | Jun 2, 00:10 UTC | Jun 2, 00:50 UTC | 40m |
| 2026-05-21 | CHH7045 | ZUH → TYN | May 21, 05:45 UTC | May 21, 06:00 UTC | 15m |
| 2026-05-20 | CHH7648 | SHE → HAK | May 20, 11:15 UTC | May 20, 11:35 UTC | 20m |
| 2026-05-19 | CHH7698 | NKG → SYX | May 19, 05:00 UTC | May 19, 09:10 UTC | 4h 10m |
| 2026-05-16 | CHH7741 | SZX → KWE | May 16, 04:05 UTC | May 16, 04:15 UTC | 10m |
| 2026-05-14 | CHH7741 | SZX → KWE | May 14, 03:00 UTC | May 14, 03:10 UTC | 10m |
| 2026-05-14 | - | - | May 14, 01:30 UTC | May 14, 01:45 UTC | 15m |
| 2026-05-12 | CHH7016 | SZX → HAK | May 12, 08:55 UTC | May 12, 09:10 UTC | 15m |
| 2026-05-10 | CHH7468 | ZUH → HGH | May 10, 08:40 UTC | May 10, 08:50 UTC | 10m |
| 2026-04-29 | CHH7648 | SHE → HAK | Apr 29, 08:10 UTC | Apr 29, 11:25 UTC | 3h 15m |
| 2026-04-28 | CHH7467 | HGH → ZUH | Apr 28, 06:30 UTC | Apr 28, 06:40 UTC | 10m |
| 2026-04-19 | CHH7468 | ZUH → HGH | Apr 19, 09:45 UTC | Apr 19, 10:00 UTC | 15m |
| 2026-04-19 | CHH7467 | HGH → ZUH | Apr 19, 08:15 UTC | Apr 19, 08:30 UTC | 15m |
| 2026-04-17 | CHH7468 | ZUH → HGH | Apr 17, 09:00 UTC | Apr 17, 09:15 UTC | 15m |
| 2026-04-17 | CHH7467 | HGH → ZUH | Apr 17, 07:20 UTC | Apr 17, 07:30 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-5797 page for operator, model, and routing details .