sensors Mode-S transponder
7808A3
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5662 · BOEING 737-800
- Hex
- 7808A3
- Octal
- 36004243
- Decimal
- 7,866,531
- Country
- CN
- Tail
- B-5662
- Type
- B738
- Flights observed
- 52
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 20h ago
Current position
Country allocation
The ICAO 24-bit address 7808A3 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 |
|---|---|---|---|
| CHH7328 | Hainan Airlines | 3 | 2026-05-04 |
| CHH7305 | Hainan Airlines | 3 | 2026-05-04 |
| CHH7751 | Hainan Airlines | 2 | 2026-04-28 |
| CHH7306 | Hainan Airlines | 2 | 2026-05-10 |
| CHH720 | Hainan Airlines | 2 | 2026-05-25 |
| CHH719 | Hainan Airlines | 2 | 2026-05-25 |
| CHH706 | Hainan Airlines | 2 | 2026-05-25 |
| CHH7809 | Hainan Airlines | 1 | 2026-05-18 |
| CHH7807 | Hainan Airlines | 1 | 2026-05-19 |
| CHH780 | - | 1 | 2026-04-17 |
| CHH7776 | - | 1 | 2026-04-25 |
| CHH7775 | Hainan Airlines | 1 | 2026-04-25 |
| CHH7763 | Hainan Airlines | 1 | 2026-04-26 |
| CHH7760 | Hainan Airlines | 1 | 2026-04-26 |
| CHH7759 | Hainan Airlines | 1 | 2026-04-26 |
| CHH7729 | Hainan Airlines | 1 | 2026-04-19 |
| CHH7726 | Hainan Airlines | 1 | 2026-04-25 |
| CHH7715 | Hainan Airlines | 1 | 2026-04-27 |
| CHH7710 | Hainan Airlines | 1 | 2026-04-27 |
| CHH7613 | Hainan Airlines | 1 | 2026-05-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CHH7029 | HAK → KWE | May 29, 08:55 UTC | May 29, 09:05 UTC | 10m |
| 2026-05-28 | CHH6217 | PEK → XIY | May 28, 08:00 UTC | May 28, 08:20 UTC | 20m |
| 2026-05-27 | CHH7185 | PEK → YIH | May 27, 23:00 UTC | May 27, 23:15 UTC | 15m |
| 2026-05-27 | CHH7109 | PEK → JIQ | May 27, 09:20 UTC | May 27, 09:45 UTC | 25m |
| 2026-05-25 | CHH720 | HKG → HAK | May 25, 08:15 UTC | May 25, 08:25 UTC | 10m |
| 2026-05-25 | CHH719 | HAK → HKG | May 25, 06:15 UTC | May 25, 06:30 UTC | 15m |
| 2026-05-25 | CHH706 | HKG → HAK | May 25, 02:30 UTC | May 25, 02:40 UTC | 10m |
| 2026-05-24 | CHH720 | HKG → HAK | May 24, 08:10 UTC | May 24, 08:25 UTC | 15m |
| 2026-05-24 | CHH719 | HAK → HKG | May 24, 06:10 UTC | May 24, 06:25 UTC | 15m |
| 2026-05-24 | CHH706 | HKG → HAK | May 24, 02:10 UTC | May 24, 02:25 UTC | 15m |
| 2026-05-24 | CHH705 | HAK → HKG | May 24, 00:20 UTC | May 24, 00:40 UTC | 20m |
| 2026-05-21 | CHH6394 | - | May 21, 17:35 UTC | May 21, 17:50 UTC | 15m |
| 2026-05-19 | CHH7807 | PEK → CAN | May 19, 04:50 UTC | May 19, 05:10 UTC | 20m |
| 2026-05-18 | CHH7809 | PEK → CAN | May 18, 06:50 UTC | May 18, 07:10 UTC | 20m |
| 2026-05-17 | CHH7613 | PEK → PVG | May 17, 23:50 UTC | May 18, 00:00 UTC | 10m |
| 2026-05-17 | CHH7193 | - | May 17, 13:05 UTC | May 17, 13:20 UTC | 15m |
| 2026-05-13 | CHH7386 | HGH → SYX | May 13, 05:25 UTC | May 13, 10:15 UTC | 4h 50m |
| 2026-05-10 | CHH7306 | TFU → SYX | May 10, 14:25 UTC | May 11, 07:15 UTC | 16h 50m |
| 2026-05-10 | CHH7306 | TFU → SYX | May 10, 09:55 UTC | May 11, 07:15 UTC | 21h 20m |
| 2026-05-07 | CHH7073 | HAK → HRB | May 7, 02:25 UTC | May 7, 15:35 UTC | 13h 10m |
| 2026-05-06 | CHH7090 | NKG → HAK | May 6, 00:35 UTC | May 6, 15:10 UTC | 14h 34m |
| 2026-05-05 | CHH7384 | HGH → SYX | May 5, 14:25 UTC | May 6, 11:00 UTC | 20h 35m |
| 2026-05-05 | CHH7383 | SYX → HGH | May 5, 09:40 UTC | May 6, 08:01 UTC | 22h 20m |
| 2026-05-04 | CHH7328 | CTU → SZX | May 4, 15:00 UTC | May 5, 14:45 UTC | 23h 46m |
| 2026-05-04 | CHH7305 | SYX → TNA | May 4, 00:45 UTC | May 4, 15:20 UTC | 14h 35m |
| 2026-05-03 | CHH7305 | SYX → TNA | May 3, 15:25 UTC | May 4, 10:20 UTC | 18h 55m |
| 2026-05-03 | CHH7305 | SYX → TNA | May 3, 10:35 UTC | May 4, 07:05 UTC | 20h 30m |
| 2026-05-02 | CHH7328 | CTU → SZX | May 2, 15:10 UTC | May 3, 10:45 UTC | 19h 34m |
| 2026-05-02 | CHH7327 | SZX → CTU | May 2, 00:55 UTC | May 2, 15:25 UTC | 14h 30m |
| 2026-04-30 | CHH7328 | CTU → SZX | Apr 30, 00:45 UTC | Apr 30, 15:10 UTC | 14h 25m |
| 2026-04-28 | CHH7276 | TFU → SZX | Apr 28, 13:20 UTC | Apr 28, 13:30 UTC | 10m |
| 2026-04-28 | CHH7275 | SZX → TFU | Apr 28, 08:00 UTC | Apr 28, 08:10 UTC | 10m |
| 2026-04-28 | CHH7751 | SZX → CTU | Apr 28, 00:00 UTC | Apr 28, 00:10 UTC | 10m |
| 2026-04-27 | CHH7715 | SZX → TNA | Apr 27, 13:50 UTC | Apr 27, 14:05 UTC | 15m |
| 2026-04-27 | CHH7710 | SZX → PEK | Apr 27, 09:20 UTC | Apr 27, 09:30 UTC | 10m |
| 2026-04-26 | CHH7763 | SZX → NKG | Apr 26, 22:30 UTC | Apr 26, 22:40 UTC | 10m |
| 2026-04-26 | CHH7760 | TNA → SZX | Apr 26, 15:50 UTC | Apr 26, 16:00 UTC | 10m |
| 2026-04-26 | CHH7759 | SZX → TNA | Apr 26, 09:10 UTC | Apr 26, 13:25 UTC | 4h 15m |
| 2026-04-25 | CHH7751 | SZX → CTU | Apr 25, 22:55 UTC | Apr 25, 23:05 UTC | 10m |
| 2026-04-25 | CHH7776 | - | Apr 25, 16:45 UTC | Apr 25, 16:55 UTC | 10m |
| 2026-04-25 | CHH7775 | SZX → TYN | Apr 25, 05:40 UTC | Apr 25, 05:50 UTC | 10m |
| 2026-04-25 | CHH7726 | PVG → SZX | Apr 25, 01:55 UTC | Apr 25, 02:10 UTC | 15m |
| 2026-04-23 | CHH7322 | PVG → SYX | Apr 23, 23:50 UTC | Apr 24, 05:35 UTC | 5h 45m |
| 2026-04-19 | CHH7729 | SZX → SHE | Apr 19, 07:15 UTC | Apr 19, 07:25 UTC | 10m |
| 2026-04-18 | CHH7256 | - | Apr 18, 15:30 UTC | Apr 18, 15:45 UTC | 15m |
| 2026-04-18 | CHH7255 | SZX → NKG | Apr 18, 10:00 UTC | Apr 18, 10:10 UTC | 10m |
| 2026-04-17 | CHH7023 | SYX → NKG | Apr 17, 23:25 UTC | Apr 17, 23:40 UTC | 15m |
| 2026-04-17 | CHH780 | - | Apr 17, 14:45 UTC | Apr 17, 15:00 UTC | 14m |
| 2026-04-15 | CHH7054 | HGH → HAK | Apr 15, 03:00 UTC | Apr 15, 03:15 UTC | 15m |
| 2026-04-14 | CHH7468 | - | Apr 14, 08:20 UTC | Apr 14, 08:30 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-5662 page for operator, model, and routing details .