sensors Mode-S transponder
78140D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-1131 · BOEING 737-800
- Hex
- 78140D
- Octal
- 36012015
- Decimal
- 7,869,453
- Country
- CN
- Tail
- B-1131
- Type
- B738
- Flights observed
- 41
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 19h ago
Last known position
Country allocation
The ICAO 24-bit address 78140D 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 |
|---|---|---|---|
| CHH7068 | Hainan Airlines | 4 | 2026-05-08 |
| CHH7698 | Hainan Airlines | 3 | 2026-05-28 |
| CHH7216 | Hainan Airlines | 3 | 2026-05-08 |
| CHH7697 | Hainan Airlines | 2 | 2026-05-23 |
| CHH7067 | Hainan Airlines | 2 | 2026-05-07 |
| CHH7988 | Hainan Airlines | 1 | 2026-05-18 |
| CHH7987 | Hainan Airlines | 1 | 2026-05-18 |
| CHH7872 | Hainan Airlines | 1 | 2026-04-19 |
| CHH7811 | Hainan Airlines | 1 | 2026-05-19 |
| CHH7746 | - | 1 | 2026-04-16 |
| CHH7745 | - | 1 | 2026-04-16 |
| CHH7737 | - | 1 | 2026-04-13 |
| CHH7688 | Hainan Airlines | 1 | 2026-04-26 |
| CHH7579 | Hainan Airlines | 1 | 2026-05-29 |
| CHH7555 | - | 1 | 2026-04-19 |
| CHH7536 | Hainan Airlines | 1 | 2026-04-23 |
| CHH7475 | Hainan Airlines | 1 | 2026-04-13 |
| CHH7338 | Hainan Airlines | 1 | 2026-04-20 |
| CHH7303 | Hainan Airlines | 1 | 2026-05-29 |
| CHH7282 | Hainan Airlines | 1 | 2026-04-28 |
Recent flights last 41
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CHH7579 | PEK → SYX | May 29, 13:20 UTC | May 29, 16:15 UTC | 2h 55m |
| 2026-05-29 | CHH7303 | SYX → TFU | May 29, 01:05 UTC | May 29, 09:05 UTC | 8h 0m |
| 2026-05-28 | CHH7698 | NKG → SYX | May 28, 05:20 UTC | May 29, 01:10 UTC | 19h 50m |
| 2026-05-28 | CHH7698 | NKG → SYX | May 28, 05:10 UTC | May 29, 01:10 UTC | 20h 0m |
| 2026-05-23 | CHH7697 | SYX → NKG | May 23, 05:30 UTC | May 23, 09:20 UTC | 3h 50m |
| 2026-05-22 | CHH7697 | SYX → NKG | May 22, 09:40 UTC | May 23, 09:15 UTC | 23h 34m |
| 2026-05-22 | CHH7698 | NKG → SYX | May 22, 05:10 UTC | May 22, 09:45 UTC | 4h 35m |
| 2026-05-19 | CHH7811 | PEK → CAN | May 19, 08:45 UTC | May 19, 15:25 UTC | 6h 40m |
| 2026-05-19 | CHH7147 | PEK → TFU | May 19, 00:05 UTC | May 19, 00:20 UTC | 15m |
| 2026-05-18 | CHH7134 | - | May 18, 16:15 UTC | May 18, 16:30 UTC | 15m |
| 2026-05-18 | CHH7133 | - | May 18, 12:15 UTC | May 18, 12:40 UTC | 25m |
| 2026-05-18 | CHH7988 | TPE → PEK | May 18, 05:15 UTC | May 18, 05:50 UTC | 35m |
| 2026-05-18 | CHH7987 | PEK → TPE | May 18, 00:45 UTC | May 18, 03:30 UTC | 2h 45m |
| 2026-05-08 | CHH7216 | NKG → HAK | May 8, 15:35 UTC | May 9, 09:35 UTC | 18h 0m |
| 2026-05-08 | CHH7216 | NKG → HAK | May 8, 12:14 UTC | May 9, 09:35 UTC | 21h 20m |
| 2026-05-08 | CHH7068 | HRB → WUH | May 8, 07:20 UTC | May 9, 04:40 UTC | 21h 20m |
| 2026-05-08 | CHH7068 | HRB → WUH | May 8, 07:14 UTC | May 9, 04:40 UTC | 21h 25m |
| 2026-05-08 | CHH7068 | HRB → WUH | May 8, 02:14 UTC | May 8, 15:45 UTC | 13h 30m |
| 2026-05-07 | CHH7068 | HRB → WUH | May 7, 14:00 UTC | May 8, 12:14 UTC | 22h 14m |
| 2026-05-07 | CHH7067 | HAK → WUH | May 7, 02:45 UTC | May 7, 14:15 UTC | 11h 30m |
| 2026-05-06 | CHH7067 | HAK → WUH | May 6, 14:05 UTC | May 7, 02:55 UTC | 12h 49m |
| 2026-05-03 | CHH720 | HKG → HAK | May 3, 09:35 UTC | May 3, 09:50 UTC | 15m |
| 2026-05-03 | CHH719 | HAK → HKG | May 3, 06:15 UTC | May 3, 06:35 UTC | 20m |
| 2026-05-03 | CHH706 | HKG → HAK | May 3, 02:10 UTC | May 3, 02:25 UTC | 15m |
| 2026-05-02 | CHH705 | HAK → HKG | May 2, 23:40 UTC | May 2, 23:50 UTC | 10m |
| 2026-05-01 | CHH7216 | NKG → HAK | May 1, 04:20 UTC | May 1, 15:55 UTC | 11h 35m |
| 2026-04-28 | CHH7282 | PEK → HAK | Apr 28, 13:20 UTC | Apr 28, 13:35 UTC | 15m |
| 2026-04-28 | CHH440 | NRT → PEK | Apr 28, 05:15 UTC | Apr 28, 07:35 UTC | 2h 20m |
| 2026-04-28 | CHH439 | PEK → NRT | Apr 28, 00:30 UTC | Apr 28, 02:20 UTC | 1h 50m |
| 2026-04-26 | CHH7688 | NGB → HAK | Apr 26, 23:35 UTC | Apr 27, 10:30 UTC | 10h 55m |
| 2026-04-24 | CHH7167 | PEK → CKG | Apr 24, 00:20 UTC | Apr 24, 13:25 UTC | 13h 5m |
| 2026-04-23 | CHH7536 | CSX → PEK | Apr 23, 15:35 UTC | Apr 23, 15:45 UTC | 10m |
| 2026-04-20 | CHH7338 | XIY → PEK | Apr 20, 12:05 UTC | Apr 20, 12:15 UTC | 10m |
| 2026-04-19 | CHH7555 | - | Apr 19, 10:55 UTC | Apr 20, 02:35 UTC | 15h 40m |
| 2026-04-19 | CHH7872 | SZX → XIY | Apr 19, 05:20 UTC | Apr 19, 05:30 UTC | 10m |
| 2026-04-17 | CHH7026 | - | Apr 17, 15:50 UTC | Apr 17, 16:05 UTC | 15m |
| 2026-04-16 | CHH7746 | - | Apr 16, 15:25 UTC | Apr 16, 15:40 UTC | 15m |
| 2026-04-16 | CHH7745 | - | Apr 16, 03:19 UTC | Apr 16, 03:30 UTC | 10m |
| 2026-04-14 | CHH7275 | - | Apr 14, 06:15 UTC | Apr 14, 06:30 UTC | 15m |
| 2026-04-13 | CHH7737 | - | Apr 13, 23:00 UTC | Apr 13, 23:10 UTC | 10m |
| 2026-04-13 | CHH7475 | SZX → TFU | Apr 13, 08:00 UTC | Apr 13, 08:10 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-1131 page for operator, model, and routing details .