sensors Mode-S transponder
781BFE
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-324U · AIRBUS A-320neo
- Hex
- 781BFE
- Octal
- 36015776
- Decimal
- 7,871,486
- Country
- CN
- Tail
- B-324U
- Type
- A20N
- Flights observed
- 96
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 781BFE 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 |
|---|---|---|---|
| DKH1365 | Juneyao Airlines | 12 | 2026-07-21 |
| DKH1353 | - | 9 | 2026-07-08 |
| DKH1354 | - | 7 | 2026-07-08 |
| DKH2009 | Juneyao Airlines | 5 | 2026-05-28 |
| DKH1601 | - | 5 | 2026-07-06 |
| DKH1575 | Juneyao Airlines | 5 | 2026-07-24 |
| DKH1366 | Juneyao Airlines | 5 | 2026-07-21 |
| DKH1562 | Juneyao Airlines | 4 | 2026-05-31 |
| DKH1561 | Juneyao Airlines | 4 | 2026-05-31 |
| DKH1356 | Juneyao Airlines | 4 | 2026-07-03 |
| DKH1355 | - | 4 | 2026-06-15 |
| DKH2010 | - | 3 | 2026-06-18 |
| DKH1576 | Juneyao Airlines | 3 | 2026-07-24 |
| DKH1329 | Juneyao Airlines | 3 | 2026-06-04 |
| DKH1271 | Juneyao Airlines | 3 | 2026-07-23 |
| DKH1129 | - | 3 | 2026-07-12 |
| DKH1192 | Juneyao Airlines | 2 | 2026-06-20 |
| DKH2118 | Juneyao Airlines | 1 | 2026-07-22 |
| DKH2117 | Juneyao Airlines | 1 | 2026-07-22 |
| DKH1870 | - | 1 | 2026-07-15 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | DKH1576 | SIN → PVG | Jul 24, 19:50 UTC | Jul 25, 11:55 UTC | 16h 5m |
| 2026-07-24 | DKH1576 | SIN → PVG | Jul 24, 16:35 UTC | Jul 25, 11:55 UTC | 19h 20m |
| 2026-07-24 | DKH1575 | PVG → SIN | Jul 24, 00:35 UTC | Jul 24, 15:15 UTC | 14h 40m |
| 2026-07-23 | DKH1271 | SHA → HAK | Jul 23, 13:50 UTC | Jul 24, 12:10 UTC | 22h 20m |
| 2026-07-22 | DKH2117 | SZX → JHG | Jul 22, 23:10 UTC | Jul 22, 23:30 UTC | 20m |
| 2026-07-22 | DKH2118 | JHG → SZX | Jul 22, 16:05 UTC | Jul 22, 16:15 UTC | 10m |
| 2026-07-21 | DKH1366 | PEN → PVG | Jul 21, 20:05 UTC | Jul 21, 21:15 UTC | 1h 10m |
| 2026-07-21 | DKH1365 | PVG → PEN | Jul 21, 14:25 UTC | Jul 21, 14:40 UTC | 15m |
| 2026-07-21 | DKH1365 | PVG → PEN | Jul 21, 10:30 UTC | Jul 21, 11:20 UTC | 50m |
| 2026-07-19 | DKH1576 | SIN → PVG | Jul 19, 16:20 UTC | Jul 19, 20:50 UTC | 4h 30m |
| 2026-07-19 | DKH1575 | PVG → SIN | Jul 19, 00:50 UTC | Jul 19, 15:00 UTC | 14h 10m |
| 2026-07-18 | DKH1035 | - | Jul 18, 12:05 UTC | Jul 18, 12:20 UTC | 15m |
| 2026-07-15 | DKH1870 | - | Jul 15, 11:25 UTC | Jul 15, 12:00 UTC | 35m |
| 2026-07-15 | - | - | Jul 15, 04:15 UTC | Jul 15, 04:25 UTC | 10m |
| 2026-07-15 | DKH1855 | - | Jul 15, 01:25 UTC | Jul 15, 01:35 UTC | 10m |
| 2026-07-13 | DKH1127 | - | Jul 13, 03:50 UTC | Jul 13, 13:45 UTC | 9h 55m |
| 2026-07-12 | DKH1129 | - | Jul 12, 10:25 UTC | Jul 12, 13:50 UTC | 3h 25m |
| 2026-07-11 | DKH1129 | - | Jul 11, 06:25 UTC | Jul 11, 06:45 UTC | 20m |
| 2026-07-09 | DKH1292 | - | Jul 9, 13:35 UTC | Jul 9, 14:45 UTC | 1h 10m |
| 2026-07-08 | DKH1291 | - | Jul 8, 19:45 UTC | Jul 9, 11:40 UTC | 15h 55m |
| 2026-07-08 | DKH1354 | - | Jul 8, 16:35 UTC | Jul 9, 11:40 UTC | 19h 5m |
| 2026-07-08 | DKH1353 | - | Jul 8, 10:45 UTC | Jul 8, 15:00 UTC | 4h 15m |
| 2026-07-07 | DKH1353 | - | Jul 7, 11:55 UTC | Jul 8, 11:30 UTC | 23h 35m |
| 2026-07-07 | DKH1602 | - | Jul 7, 08:45 UTC | Jul 7, 12:50 UTC | 4h 5m |
| 2026-07-06 | DKH1601 | - | Jul 6, 12:40 UTC | Jul 7, 06:15 UTC | 17h 35m |
| 2026-07-06 | DKH1601 | - | Jul 6, 08:55 UTC | Jul 7, 06:15 UTC | 21h 20m |
| 2026-07-05 | DKH1601 | - | Jul 5, 13:05 UTC | Jul 6, 06:35 UTC | 17h 30m |
| 2026-07-05 | DKH1601 | - | Jul 5, 09:50 UTC | Jul 6, 06:35 UTC | 20h 45m |
| 2026-07-04 | DKH1601 | - | Jul 4, 18:30 UTC | Jul 5, 08:05 UTC | 13h 35m |
| 2026-07-04 | DKH1271 | - | Jul 4, 00:40 UTC | Jul 4, 16:50 UTC | 16h 10m |
| 2026-07-03 | DKH1271 | - | Jul 3, 13:45 UTC | Jul 4, 13:30 UTC | 23h 45m |
| 2026-07-03 | DKH1356 | DPS → PVG | Jul 3, 11:15 UTC | Jul 4, 04:45 UTC | 17h 30m |
| 2026-07-03 | DKH1356 | DPS → PVG | Jul 3, 05:35 UTC | Jul 4, 04:45 UTC | 23h 10m |
| 2026-07-03 | DKH1356 | DPS → PVG | Jul 3, 02:40 UTC | Jul 4, 01:10 UTC | 22h 30m |
| 2026-07-02 | DKH1356 | DPS → PVG | Jul 2, 19:45 UTC | Jul 3, 14:05 UTC | 18h 20m |
| 2026-07-02 | DKH1366 | - | Jul 2, 17:20 UTC | Jul 2, 17:30 UTC | 10m |
| 2026-07-02 | DKH1365 | - | Jul 2, 15:55 UTC | Jul 2, 16:10 UTC | 15m |
| 2026-07-01 | DKH1365 | - | Jul 1, 19:50 UTC | Jul 2, 13:40 UTC | 17h 50m |
| 2026-07-01 | DKH1354 | - | Jul 1, 16:35 UTC | Jul 2, 13:40 UTC | 21h 5m |
| 2026-07-01 | DKH1353 | - | Jul 1, 10:45 UTC | Jul 1, 15:00 UTC | 4h 15m |
| 2026-06-30 | DKH1353 | - | Jun 30, 13:05 UTC | Jul 1, 11:15 UTC | 22h 10m |
| 2026-06-28 | DKH1130 | - | Jun 28, 10:04 UTC | Jun 28, 10:35 UTC | 30m |
| 2026-06-28 | DKH1129 | - | Jun 28, 07:25 UTC | Jun 28, 07:34 UTC | 10m |
| 2026-06-25 | DKH1366 | - | Jun 25, 19:20 UTC | Jun 25, 20:19 UTC | 1h 0m |
| 2026-06-25 | DKH1366 | - | Jun 25, 16:14 UTC | Jun 25, 16:24 UTC | 10m |
| 2026-06-25 | DKH1365 | - | Jun 25, 14:14 UTC | Jun 25, 14:29 UTC | 15m |
| 2026-06-25 | DKH1365 | - | Jun 25, 10:25 UTC | Jun 25, 11:30 UTC | 1h 5m |
| 2026-06-20 | DKH1192 | CGQ → PVG | Jun 20, 13:44 UTC | Jun 20, 14:29 UTC | 45m |
| 2026-06-18 | DKH2010 | - | Jun 18, 07:50 UTC | Jun 18, 11:40 UTC | 3h 50m |
| 2026-06-15 | DKH1355 | - | Jun 15, 20:00 UTC | Jun 16, 14:05 UTC | 18h 5m |
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-324U page for operator, model, and routing details .