sensors Mode-S transponder
7804A0
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5406 · BOEING 737-800
- Hex
- 7804A0
- Octal
- 36002240
- Decimal
- 7,865,504
- Country
- CN
- Tail
- B-5406
- Type
- B738
- Flights observed
- 57
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 7804A0 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 |
|---|---|---|---|
| CHH7386 | Hainan Airlines | 7 | 2026-04-24 |
| CHH7120 | Hainan Airlines | 4 | 2026-04-27 |
| CHH460 | Hainan Airlines | 3 | 2026-06-01 |
| CHH7654 | Hainan Airlines | 2 | 2026-05-05 |
| CHH7078 | Hainan Airlines | 2 | 2026-05-01 |
| CHH7028 | Hainan Airlines | 2 | 2026-05-17 |
| CHH459 | Hainan Airlines | 2 | 2026-06-01 |
| CHH440 | Hainan Airlines | 2 | 2026-05-12 |
| CHH7982 | Hainan Airlines | 1 | 2026-05-26 |
| CHH7981 | Hainan Airlines | 1 | 2026-05-26 |
| CHH7869 | Hainan Airlines | 1 | 2026-05-17 |
| CHH7805 | Hainan Airlines | 1 | 2026-05-28 |
| CHH7772 | - | 1 | 2026-04-30 |
| CHH7771 | - | 1 | 2026-04-30 |
| CHH7749 | Hainan Airlines | 1 | 2026-04-24 |
| CHH7744 | Hainan Airlines | 1 | 2026-04-15 |
| CHH7743 | Hainan Airlines | 1 | 2026-04-14 |
| CHH7741 | Hainan Airlines | 1 | 2026-05-20 |
| CHH7726 | Hainan Airlines | 1 | 2026-04-26 |
| CHH7725 | Hainan Airlines | 1 | 2026-04-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | CHH460 | SIN → HAK | Jun 1, 14:15 UTC | Jun 1, 14:25 UTC | 10m |
| 2026-06-01 | CHH460 | SIN → HAK | Jun 1, 08:45 UTC | Jun 1, 11:40 UTC | 2h 55m |
| 2026-06-01 | CHH459 | HAK → SIN | Jun 1, 06:30 UTC | Jun 1, 06:40 UTC | 10m |
| 2026-05-31 | CHH459 | HAK → SIN | May 31, 14:00 UTC | Jun 1, 01:25 UTC | 11h 25m |
| 2026-05-31 | CHH460 | SIN → HAK | May 31, 08:30 UTC | May 31, 11:10 UTC | 2h 40m |
| 2026-05-30 | CHH7297 | CAN → TYN | May 30, 12:50 UTC | May 30, 13:10 UTC | 20m |
| 2026-05-30 | CHH7238 | XIY → PEK | May 30, 07:40 UTC | May 30, 08:05 UTC | 25m |
| 2026-05-29 | CHH7557 | SZX → CKG | May 29, 16:45 UTC | May 29, 16:55 UTC | 10m |
| 2026-05-29 | CHH7260 | DOY → CAN | May 29, 11:30 UTC | May 29, 12:10 UTC | 40m |
| 2026-05-28 | CHH7805 | PEK → CAN | May 28, 02:45 UTC | May 28, 03:05 UTC | 20m |
| 2026-05-27 | CHH7187 | PEK → WUH | May 27, 00:39 UTC | May 27, 00:59 UTC | 20m |
| 2026-05-26 | CHH7982 | TPE → CAN | May 26, 04:15 UTC | May 26, 05:25 UTC | 1h 10m |
| 2026-05-26 | CHH7981 | CAN → TPE | May 26, 00:29 UTC | May 26, 01:55 UTC | 1h 25m |
| 2026-05-22 | CHH7306 | TFU → SYX | May 22, 01:05 UTC | May 22, 07:50 UTC | 6h 45m |
| 2026-05-20 | CHH7741 | SZX → KWE | May 20, 04:05 UTC | May 20, 04:20 UTC | 15m |
| 2026-05-17 | CHH7028 | SZX → HAK | May 17, 15:25 UTC | May 17, 15:40 UTC | 15m |
| 2026-05-17 | CHH7869 | XIY → SZX | May 17, 05:55 UTC | May 17, 06:05 UTC | 10m |
| 2026-05-12 | CHH440 | NRT → PEK | May 12, 05:40 UTC | May 12, 07:40 UTC | 2h 0m |
| 2026-05-11 | CHH7164 | NKG → SZX | May 11, 05:15 UTC | May 11, 08:30 UTC | 3h 15m |
| 2026-05-09 | CHH7567 | PEK → CKG | May 9, 11:10 UTC | May 9, 11:25 UTC | 15m |
| 2026-05-09 | CHH440 | NRT → PEK | May 9, 05:40 UTC | May 9, 08:00 UTC | 2h 20m |
| 2026-05-08 | CHH439 | PEK → NRT | May 8, 23:30 UTC | May 9, 02:25 UTC | 2h 55m |
| 2026-05-08 | CHH7268 | CKG → PEK | May 8, 15:30 UTC | May 8, 15:40 UTC | 10m |
| 2026-05-08 | CHH7267 | PEK → CKG | May 8, 09:44 UTC | May 8, 09:59 UTC | 15m |
| 2026-05-06 | CHH7535 | PEK → CSX | May 6, 15:25 UTC | May 6, 15:40 UTC | 15m |
| 2026-05-05 | CHH7654 | JUH → TYN | May 5, 15:30 UTC | May 6, 08:30 UTC | 17h 0m |
| 2026-05-05 | CHH7654 | JUH → TYN | May 5, 12:35 UTC | May 6, 08:30 UTC | 19h 55m |
| 2026-05-04 | CHH7022 | CAN → SYX | May 4, 01:00 UTC | May 4, 01:15 UTC | 15m |
| 2026-05-03 | CHH7021 | HAK → SZX | May 3, 23:10 UTC | May 3, 23:30 UTC | 20m |
| 2026-05-03 | CHH7648 | SHE → HAK | May 3, 07:55 UTC | May 3, 11:25 UTC | 3h 30m |
| 2026-05-01 | CHH7078 | KHN → HAK | May 1, 09:45 UTC | May 2, 02:30 UTC | 16h 45m |
| 2026-05-01 | CHH7078 | KHN → HAK | May 1, 06:30 UTC | May 2, 02:30 UTC | 20h 0m |
| 2026-05-01 | CHH7370 | - | May 1, 00:30 UTC | May 1, 12:50 UTC | 12h 20m |
| 2026-04-30 | CHH7028 | SZX → HAK | Apr 30, 15:10 UTC | Apr 30, 15:25 UTC | 15m |
| 2026-04-30 | CHH7772 | - | Apr 30, 12:50 UTC | Apr 30, 13:10 UTC | 20m |
| 2026-04-30 | CHH7771 | - | Apr 30, 07:15 UTC | Apr 30, 07:25 UTC | 10m |
| 2026-04-28 | CHH7688 | NGB → HAK | Apr 28, 00:10 UTC | Apr 28, 10:05 UTC | 9h 55m |
| 2026-04-27 | CHH7120 | PVG → HAK | Apr 27, 10:40 UTC | Apr 28, 10:00 UTC | 23h 20m |
| 2026-04-27 | CHH7120 | PVG → HAK | Apr 27, 06:25 UTC | Apr 28, 00:10 UTC | 17h 45m |
| 2026-04-27 | CHH7120 | PVG → HAK | Apr 27, 05:20 UTC | Apr 28, 00:10 UTC | 18h 50m |
| 2026-04-26 | CHH7120 | PVG → HAK | Apr 26, 23:40 UTC | Apr 27, 12:00 UTC | 12h 20m |
| 2026-04-26 | CHH7322 | PVG → SYX | Apr 26, 06:15 UTC | Apr 27, 05:40 UTC | 23h 25m |
| 2026-04-26 | CHH7725 | SZX → PVG | Apr 26, 04:55 UTC | Apr 26, 05:10 UTC | 15m |
| 2026-04-26 | CHH7726 | PVG → SZX | Apr 26, 01:05 UTC | Apr 26, 01:25 UTC | 20m |
| 2026-04-24 | CHH7749 | SYX → SZX | Apr 24, 16:15 UTC | Apr 24, 16:30 UTC | 15m |
| 2026-04-24 | CHH7386 | HGH → SYX | Apr 24, 05:25 UTC | Apr 24, 10:50 UTC | 5h 25m |
| 2026-04-23 | CHH7386 | HGH → SYX | Apr 23, 11:20 UTC | Apr 24, 05:30 UTC | 18h 10m |
| 2026-04-23 | CHH7386 | HGH → SYX | Apr 23, 06:50 UTC | Apr 24, 05:30 UTC | 22h 40m |
| 2026-04-22 | CHH7386 | HGH → SYX | Apr 22, 10:05 UTC | Apr 23, 06:55 UTC | 20h 50m |
| 2026-04-22 | CHH7386 | HGH → SYX | Apr 22, 09:55 UTC | Apr 23, 06:55 UTC | 21h 0m |
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-5406 page for operator, model, and routing details .