sensors Mode-S transponder
781FB1
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32EY · AIRBUS A-320neo
- Hex
- 781FB1
- Octal
- 36017661
- Decimal
- 7,872,433
- Country
- CN
- Tail
- B-32EY
- Type
- A20N
- Flights observed
- 27
- Distinct callsigns
- 14
- Country
- CN
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 781FB1 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| DKH1291 | Juneyao Airlines | 5 | 2026-05-01 |
| DKH1366 | Juneyao Airlines | 3 | 2026-04-16 |
| DKH1365 | Juneyao Airlines | 3 | 2026-04-16 |
| DKH1292 | Juneyao Airlines | 3 | 2026-05-01 |
| DKH1271 | Juneyao Airlines | 2 | 2026-05-26 |
| DKH1262 | Juneyao Airlines | 2 | 2026-05-18 |
| DKH1087 | Juneyao Airlines | 2 | 2026-05-02 |
| DKH2372 | Juneyao Airlines | 1 | 2026-05-17 |
| DKH1354 | Juneyao Airlines | 1 | 2026-04-20 |
| DKH1353 | Juneyao Airlines | 1 | 2026-04-20 |
| DKH1328 | Juneyao Airlines | 1 | 2026-04-18 |
| DKH1327 | Juneyao Airlines | 1 | 2026-04-18 |
| DKH1159 | Juneyao Airlines | 1 | 2026-05-17 |
| DKH1088 | Juneyao Airlines | 1 | 2026-05-02 |
Recent flights last 27
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-26 | DKH1271 | SHA → HAK | May 26, 00:49 UTC | May 26, 06:25 UTC | 5h 35m |
| 2026-05-22 | DKH1271 | SHA → HAK | May 22, 11:55 UTC | May 23, 04:45 UTC | 16h 49m |
| 2026-05-18 | DKH1262 | HRB → PVG | May 18, 12:20 UTC | May 19, 11:50 UTC | 23h 29m |
| 2026-05-18 | DKH1262 | HRB → PVG | May 18, 11:45 UTC | May 18, 12:30 UTC | 45m |
| 2026-05-17 | DKH2372 | ZUH → NKG | May 17, 05:55 UTC | May 17, 06:05 UTC | 10m |
| 2026-05-17 | DKH1159 | SHA → ZUH | May 17, 03:25 UTC | May 17, 03:45 UTC | 20m |
| 2026-05-02 | DKH1088 | HAK → SHA | May 2, 12:35 UTC | May 3, 04:30 UTC | 15h 54m |
| 2026-05-02 | DKH1087 | PVG → HAK | May 2, 08:35 UTC | May 3, 04:30 UTC | 19h 54m |
| 2026-05-01 | DKH1087 | PVG → HAK | May 1, 14:20 UTC | May 2, 13:20 UTC | 23h 0m |
| 2026-05-01 | DKH1292 | HKG → PVG | May 1, 13:15 UTC | May 1, 13:30 UTC | 15m |
| 2026-05-01 | DKH1291 | PVG → HKG | May 1, 10:50 UTC | May 1, 11:25 UTC | 35m |
| 2026-05-01 | DKH1291 | PVG → HKG | May 1, 09:45 UTC | May 1, 10:05 UTC | 20m |
| 2026-04-29 | DKH1292 | HKG → PVG | Apr 29, 13:50 UTC | Apr 30, 04:15 UTC | 14h 24m |
| 2026-04-29 | DKH1291 | PVG → HKG | Apr 29, 11:55 UTC | Apr 29, 12:05 UTC | 10m |
| 2026-04-28 | DKH1292 | HKG → PVG | Apr 28, 13:05 UTC | Apr 29, 10:50 UTC | 21h 45m |
| 2026-04-28 | DKH1291 | PVG → HKG | Apr 28, 11:05 UTC | Apr 28, 11:30 UTC | 25m |
| 2026-04-28 | DKH1291 | PVG → HKG | Apr 28, 10:00 UTC | Apr 28, 10:15 UTC | 15m |
| 2026-04-20 | DKH1354 | KUL → PVG | Apr 20, 16:55 UTC | Apr 20, 21:00 UTC | 4h 5m |
| 2026-04-20 | DKH1353 | PVG → KUL | Apr 20, 10:50 UTC | Apr 20, 15:20 UTC | 4h 30m |
| 2026-04-18 | DKH1328 | SGN → PVG | Apr 18, 18:55 UTC | Apr 18, 19:05 UTC | 10m |
| 2026-04-18 | DKH1327 | PVG → SGN | Apr 18, 14:35 UTC | Apr 18, 15:55 UTC | 1h 20m |
| 2026-04-16 | DKH1366 | PEN → PVG | Apr 16, 19:25 UTC | Apr 16, 20:20 UTC | 55m |
| 2026-04-16 | DKH1366 | PEN → PVG | Apr 16, 17:30 UTC | Apr 16, 17:44 UTC | 15m |
| 2026-04-16 | DKH1365 | PVG → PEN | Apr 16, 13:25 UTC | Apr 16, 13:44 UTC | 20m |
| 2026-04-16 | DKH1365 | PVG → PEN | Apr 16, 10:34 UTC | Apr 16, 10:59 UTC | 25m |
| 2026-04-13 | DKH1366 | - | Apr 13, 19:25 UTC | Apr 13, 19:35 UTC | 10m |
| 2026-04-13 | DKH1365 | PVG → PEN | Apr 13, 10:30 UTC | Apr 13, 11:05 UTC | 35m |
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-32EY page for operator, model, and routing details .