sensors Mode-S transponder
780F99
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8537 · AIRBUS A-321
- Hex
- 780F99
- Octal
- 36007631
- Decimal
- 7,868,313
- Country
- CN
- Tail
- B-8537
- Type
- A321
- Flights observed
- 77
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 7h ago
Last known position
Country allocation
The ICAO 24-bit address 780F99 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 |
|---|---|---|---|
| DKH1914 | - | 14 | 2026-07-05 |
| DKH1913 | - | 9 | 2026-07-23 |
| DKH2047 | - | 4 | 2026-07-20 |
| DKH1308 | - | 3 | 2026-06-17 |
| DKH1307 | - | 3 | 2026-06-17 |
| DKH1292 | - | 3 | 2026-06-18 |
| DKH1291 | - | 3 | 2026-06-18 |
| DKH1156 | - | 3 | 2026-06-25 |
| DKH1884 | - | 2 | 2026-07-19 |
| DKH1883 | Juneyao Airlines | 2 | 2026-07-19 |
| DKH1351 | Juneyao Airlines | 2 | 2026-05-14 |
| DKH1312 | Juneyao Airlines | 2 | 2026-07-22 |
| DKH1311 | Juneyao Airlines | 2 | 2026-07-22 |
| DKH1155 | - | 2 | 2026-06-25 |
| DKH2372 | Juneyao Airlines | 1 | 2026-04-24 |
| DKH2048 | Juneyao Airlines | 1 | 2026-04-28 |
| DKH1888 | - | 1 | 2026-07-17 |
| DKH1887 | - | 1 | 2026-07-17 |
| DKH1790 | - | 1 | 2026-07-18 |
| DKH1789 | Juneyao Airlines | 1 | 2026-07-18 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | DKH1913 | - | Jul 23, 04:25 UTC | Jul 23, 16:45 UTC | 12h 20m |
| 2026-07-22 | DKH1312 | KHH → PVG | Jul 22, 05:05 UTC | Jul 22, 05:25 UTC | 20m |
| 2026-07-22 | DKH1311 | PVG → KHH | Jul 22, 02:15 UTC | Jul 22, 03:20 UTC | 1h 5m |
| 2026-07-20 | DKH2047 | - | Jul 20, 15:45 UTC | Jul 20, 16:00 UTC | 15m |
| 2026-07-20 | DKH2047 | - | Jul 20, 13:40 UTC | Jul 20, 14:10 UTC | 30m |
| 2026-07-19 | DKH2047 | - | Jul 19, 15:55 UTC | Jul 20, 14:10 UTC | 22h 15m |
| 2026-07-19 | DKH1884 | - | Jul 19, 08:45 UTC | Jul 19, 09:05 UTC | 20m |
| 2026-07-19 | DKH1884 | - | Jul 19, 07:05 UTC | Jul 19, 07:15 UTC | 10m |
| 2026-07-19 | DKH1883 | SHA → SZX | Jul 19, 03:35 UTC | Jul 19, 04:15 UTC | 40m |
| 2026-07-19 | - | - | Jul 19, 00:00 UTC | Jul 19, 00:10 UTC | 10m |
| 2026-07-18 | DKH1790 | - | Jul 18, 12:55 UTC | Jul 18, 13:05 UTC | 10m |
| 2026-07-18 | DKH1789 | NKG → XMN | Jul 18, 10:30 UTC | Jul 18, 11:20 UTC | 50m |
| 2026-07-18 | DKH1883 | - | Jul 18, 03:45 UTC | Jul 18, 04:30 UTC | 45m |
| 2026-07-17 | DKH1888 | - | Jul 17, 14:39 UTC | Jul 17, 14:55 UTC | 15m |
| 2026-07-17 | DKH1887 | - | Jul 17, 11:50 UTC | Jul 17, 12:30 UTC | 40m |
| 2026-07-08 | DKH1913 | - | Jul 8, 15:10 UTC | Jul 8, 15:45 UTC | 35m |
| 2026-07-07 | DKH1330 | - | Jul 7, 19:15 UTC | Jul 8, 09:50 UTC | 14h 35m |
| 2026-07-07 | DKH1329 | PVG → HAN | Jul 7, 17:40 UTC | Jul 7, 17:50 UTC | 10m |
| 2026-07-05 | DKH1914 | - | Jul 5, 07:35 UTC | Jul 6, 01:20 UTC | 17h 45m |
| 2026-07-05 | DKH1914 | - | Jul 5, 04:20 UTC | Jul 6, 01:20 UTC | 21h 0m |
| 2026-07-05 | DKH1914 | - | Jul 5, 04:05 UTC | Jul 6, 01:20 UTC | 21h 15m |
| 2026-07-02 | DKH1914 | - | Jul 2, 00:25 UTC | Jul 2, 15:35 UTC | 15h 10m |
| 2026-07-01 | DKH1913 | - | Jul 1, 14:55 UTC | Jul 2, 00:30 UTC | 9h 35m |
| 2026-06-25 | DKH1156 | - | Jun 25, 15:29 UTC | Jun 26, 04:20 UTC | 12h 50m |
| 2026-06-25 | DKH1155 | - | Jun 25, 12:44 UTC | Jun 25, 13:00 UTC | 15m |
| 2026-06-23 | DKH1913 | - | Jun 23, 13:59 UTC | Jun 24, 00:59 UTC | 11h 0m |
| 2026-06-22 | DKH1286 | - | Jun 22, 15:14 UTC | Jun 23, 04:05 UTC | 12h 50m |
| 2026-06-22 | DKH1914 | - | Jun 22, 05:29 UTC | Jun 22, 05:40 UTC | 10m |
| 2026-06-21 | DKH1913 | HUZ → HGH | Jun 21, 14:34 UTC | Jun 22, 00:44 UTC | 10h 10m |
| 2026-06-18 | DKH1292 | - | Jun 18, 14:25 UTC | Jun 18, 14:50 UTC | 25m |
| 2026-06-18 | DKH1292 | - | Jun 18, 13:40 UTC | Jun 18, 13:55 UTC | 15m |
| 2026-06-18 | DKH1291 | - | Jun 18, 09:50 UTC | Jun 18, 11:55 UTC | 2h 5m |
| 2026-06-17 | DKH1291 | - | Jun 17, 12:20 UTC | Jun 18, 11:55 UTC | 23h 35m |
| 2026-06-17 | DKH1390 | NGO → PVG | Jun 17, 12:00 UTC | Jun 18, 10:15 UTC | 22h 15m |
| 2026-06-17 | DKH1389 | PVG → NGO | Jun 17, 05:30 UTC | Jun 17, 10:00 UTC | 4h 30m |
| 2026-06-17 | DKH1308 | - | Jun 17, 04:21 UTC | Jun 17, 04:40 UTC | 20m |
| 2026-06-17 | DKH1307 | - | Jun 17, 00:55 UTC | Jun 17, 02:15 UTC | 1h 20m |
| 2026-06-15 | DKH1914 | - | Jun 15, 15:25 UTC | Jun 16, 00:15 UTC | 8h 50m |
| 2026-06-14 | DKH1914 | HRB → HGH | Jun 14, 00:20 UTC | Jun 14, 14:55 UTC | 14h 35m |
| 2026-06-13 | DKH1913 | HUZ → HGH | Jun 13, 15:55 UTC | Jun 14, 00:50 UTC | 8h 55m |
| 2026-06-13 | DKH1312 | KHH → PVG | Jun 13, 04:55 UTC | Jun 13, 10:05 UTC | 5h 10m |
| 2026-06-12 | DKH1311 | PVG → KHH | Jun 12, 14:50 UTC | Jun 13, 03:30 UTC | 12h 40m |
| 2026-06-11 | DKH1913 | HUZ → HGH | Jun 11, 14:20 UTC | Jun 12, 00:20 UTC | 10h 0m |
| 2026-06-09 | DKH1914 | HRB → HGH | Jun 9, 14:10 UTC | Jun 10, 00:55 UTC | 10h 45m |
| 2026-06-05 | DKH1156 | ZUH → PVG | Jun 5, 13:30 UTC | Jun 5, 13:45 UTC | 15m |
| 2026-06-03 | DKH1914 | HRB → HGH | Jun 3, 05:25 UTC | Jun 3, 05:35 UTC | 10m |
| 2026-06-02 | DKH1914 | HRB → HGH | Jun 2, 14:00 UTC | Jun 3, 00:40 UTC | 10h 40m |
| 2026-05-31 | DKH1913 | HUZ → HGH | May 31, 14:00 UTC | Jun 1, 01:00 UTC | 11h 0m |
| 2026-05-31 | DKH1233 | - | May 31, 08:30 UTC | May 31, 08:40 UTC | 10m |
| 2026-05-29 | DKH1156 | ZUH → PVG | May 29, 15:05 UTC | May 29, 15:30 UTC | 25m |
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-8537 page for operator, model, and routing details .