sensors Mode-S transponder
7807B4
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-5620 · BOEING 737-800
- Hex
- 7807B4
- Octal
- 36003664
- Decimal
- 7,866,292
- Country
- CN
- Tail
- B-5620
- Type
- B738
- Flights observed
- 41
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 22h ago
Last known position
Country allocation
The ICAO 24-bit address 7807B4 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 |
|---|---|---|---|
| CHH7798 | - | 3 | 2026-07-10 |
| CHH7506 | Hainan Airlines | 3 | 2026-04-24 |
| CHH7535 | - | 2 | 2026-06-28 |
| CHH7505 | Hainan Airlines | 2 | 2026-04-24 |
| CHH7168 | - | 2 | 2026-06-22 |
| CHH7167 | - | 2 | 2026-06-22 |
| CHH7016 | - | 2 | 2026-06-17 |
| CHH7890 | Hainan Airlines | 1 | 2026-06-27 |
| CHH7889 | - | 1 | 2026-06-27 |
| CHH7815 | - | 1 | 2026-07-14 |
| CHH7777 | - | 1 | 2026-06-21 |
| CHH7746 | - | 1 | 2026-06-08 |
| CHH7745 | - | 1 | 2026-06-08 |
| CHH7741 | - | 1 | 2026-07-19 |
| CHH7654 | Hainan Airlines | 1 | 2026-06-06 |
| CHH7653 | Hainan Airlines | 1 | 2026-06-06 |
| CHH7648 | Hainan Airlines | 1 | 2026-04-18 |
| CHH7528 | - | 1 | 2026-07-17 |
| CHH7372 | Hainan Airlines | 1 | 2026-06-01 |
| CHH7371 | Hainan Airlines | 1 | 2026-06-01 |
Recent flights last 41
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-19 | CHH7741 | - | Jul 19, 03:45 UTC | Jul 19, 04:00 UTC | 15m |
| 2026-07-17 | CHH7528 | - | Jul 17, 05:55 UTC | Jul 17, 10:35 UTC | 4h 40m |
| 2026-07-16 | CHH7308 | - | Jul 16, 00:25 UTC | Jul 16, 00:35 UTC | 10m |
| 2026-07-14 | CHH7815 | - | Jul 14, 13:00 UTC | Jul 14, 13:20 UTC | 20m |
| 2026-07-14 | CHH7179 | - | Jul 14, 02:00 UTC | Jul 14, 04:50 UTC | 2h 50m |
| 2026-07-10 | CHH7798 | - | Jul 10, 08:50 UTC | Jul 10, 09:00 UTC | 10m |
| 2026-07-07 | CHH7798 | - | Jul 7, 15:15 UTC | Jul 7, 15:30 UTC | 15m |
| 2026-07-05 | CHH7798 | - | Jul 5, 08:20 UTC | Jul 5, 08:30 UTC | 10m |
| 2026-06-28 | CHH7535 | - | Jun 28, 15:34 UTC | Jun 28, 15:55 UTC | 20m |
| 2026-06-28 | CHH7080 | SYX → PEK | Jun 28, 06:24 UTC | Jun 28, 06:55 UTC | 30m |
| 2026-06-28 | CHH7079 | PEK → SYX | Jun 28, 00:50 UTC | Jun 28, 03:59 UTC | 3h 10m |
| 2026-06-27 | CHH7890 | YZY → PEK | Jun 27, 06:25 UTC | Jun 27, 06:35 UTC | 10m |
| 2026-06-27 | CHH7889 | - | Jun 27, 00:14 UTC | Jun 27, 00:25 UTC | 10m |
| 2026-06-22 | CHH7103 | PEK → DLC | Jun 22, 17:50 UTC | Jun 22, 18:00 UTC | 10m |
| 2026-06-22 | CHH7134 | - | Jun 22, 15:29 UTC | Jun 22, 15:45 UTC | 15m |
| 2026-06-22 | CHH7133 | - | Jun 22, 12:34 UTC | Jun 22, 12:49 UTC | 15m |
| 2026-06-22 | CHH7168 | - | Jun 22, 06:19 UTC | Jun 22, 06:29 UTC | 10m |
| 2026-06-22 | CHH7167 | - | Jun 22, 00:10 UTC | Jun 22, 00:29 UTC | 20m |
| 2026-06-21 | CHH7777 | - | Jun 21, 06:14 UTC | Jun 21, 09:15 UTC | 3h 0m |
| 2026-06-20 | CHH7185 | - | Jun 20, 22:59 UTC | Jun 20, 23:19 UTC | 20m |
| 2026-06-20 | CHH7247 | - | Jun 20, 05:19 UTC | Jun 20, 05:44 UTC | 25m |
| 2026-06-17 | CHH7016 | - | Jun 17, 08:25 UTC | Jun 17, 13:00 UTC | 4h 35m |
| 2026-06-15 | CHH7016 | - | Jun 15, 08:45 UTC | Jun 15, 13:00 UTC | 4h 15m |
| 2026-06-08 | CHH7746 | - | Jun 8, 08:50 UTC | Jun 8, 09:10 UTC | 20m |
| 2026-06-08 | CHH7745 | - | Jun 8, 02:30 UTC | Jun 8, 02:40 UTC | 10m |
| 2026-06-06 | CHH7654 | JUH → TYN | Jun 6, 14:45 UTC | Jun 6, 15:39 UTC | 55m |
| 2026-06-06 | CHH7653 | TYN → KWE | Jun 6, 03:50 UTC | Jun 6, 12:49 UTC | 9h 0m |
| 2026-06-05 | CHH7077 | HAK → KHN | Jun 5, 12:50 UTC | Jun 6, 10:00 UTC | 21h 10m |
| 2026-06-01 | CHH7372 | CKG → HAK | Jun 1, 11:40 UTC | Jun 2, 06:55 UTC | 19h 15m |
| 2026-06-01 | CHH7371 | HAK → CKG | Jun 1, 07:10 UTC | Jun 2, 06:55 UTC | 23h 45m |
| 2026-04-26 | CHH7535 | PEK → CSX | Apr 26, 15:30 UTC | Apr 26, 15:40 UTC | 10m |
| 2026-04-26 | CHH7164 | NKG → SZX | Apr 26, 00:15 UTC | Apr 26, 05:30 UTC | 5h 15m |
| 2026-04-25 | CHH7168 | CKG → PEK | Apr 25, 06:20 UTC | Apr 25, 06:30 UTC | 10m |
| 2026-04-25 | CHH7167 | PEK → CKG | Apr 25, 00:20 UTC | Apr 25, 00:35 UTC | 15m |
| 2026-04-24 | CHH7506 | CGO → HRB | Apr 24, 11:20 UTC | Apr 24, 11:35 UTC | 15m |
| 2026-04-24 | CHH7505 | HRB → CGO | Apr 24, 01:05 UTC | Apr 24, 01:15 UTC | 10m |
| 2026-04-23 | CHH7506 | CGO → HRB | Apr 23, 11:20 UTC | Apr 23, 11:40 UTC | 20m |
| 2026-04-22 | CHH7506 | CGO → HRB | Apr 22, 11:10 UTC | Apr 22, 11:25 UTC | 15m |
| 2026-04-22 | CHH7505 | HRB → CGO | Apr 22, 01:00 UTC | Apr 22, 01:10 UTC | 10m |
| 2026-04-19 | CHH7076 | FOC → HAK | Apr 19, 03:45 UTC | Apr 19, 14:55 UTC | 11h 10m |
| 2026-04-18 | CHH7648 | SHE → HAK | Apr 18, 11:15 UTC | Apr 19, 01:00 UTC | 13h 44m |
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-5620 page for operator, model, and routing details .