sensors Mode-S transponder
781942
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-20EQ · BOEING 787-9 Dreamliner
- Hex
- 781942
- Octal
- 36014502
- Decimal
- 7,870,786
- Country
- CN
- Tail
- B-20EQ
- Type
- B789
- Flights observed
- 89
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 781942 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 |
|---|---|---|---|
| DKH1667 | Juneyao Airlines | 11 | 2026-05-22 |
| DKH1668 | Juneyao Airlines | 7 | 2026-05-22 |
| DKH1885 | Juneyao Airlines | 6 | 2026-05-20 |
| DKH1881 | Juneyao Airlines | 5 | 2026-05-21 |
| DKH1607 | Juneyao Airlines | 5 | 2026-05-10 |
| DKH1882 | Juneyao Airlines | 4 | 2026-05-21 |
| DKH1658 | Juneyao Airlines | 4 | 2026-05-30 |
| DKH1657 | Juneyao Airlines | 4 | 2026-05-29 |
| DKH1608 | Juneyao Airlines | 4 | 2026-05-10 |
| DKH1886 | Juneyao Airlines | 3 | 2026-05-02 |
| DKH1662 | Juneyao Airlines | 3 | 2026-05-18 |
| DKH1661 | Juneyao Airlines | 3 | 2026-05-17 |
| DKH1660 | Juneyao Airlines | 3 | 2026-05-24 |
| DKH1386 | Juneyao Airlines | 3 | 2026-05-14 |
| DKH1659 | Juneyao Airlines | 2 | 2026-05-24 |
| DKH1385 | Juneyao Airlines | 2 | 2026-05-14 |
| DKH1380 | Juneyao Airlines | 2 | 2026-05-29 |
| DKH1338 | Juneyao Airlines | 2 | 2026-05-13 |
| DKH1337 | Juneyao Airlines | 2 | 2026-05-13 |
| DKH1884 | Juneyao Airlines | 1 | 2026-04-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | DKH1658 | ATH → PVG | May 30, 11:55 UTC | May 30, 14:15 UTC | 2h 20m |
| 2026-05-29 | DKH1657 | PVG → ATH | May 29, 22:30 UTC | May 30, 04:35 UTC | 6h 5m |
| 2026-05-29 | DKH1380 | NRT → PVG | May 29, 04:40 UTC | May 30, 04:30 UTC | 23h 50m |
| 2026-05-28 | DKH1658 | ATH → PVG | May 28, 11:45 UTC | May 29, 02:45 UTC | 15h 0m |
| 2026-05-27 | DKH1657 | PVG → ATH | May 27, 22:20 UTC | May 28, 04:25 UTC | 6h 5m |
| 2026-05-26 | DKH1656 | MEL → PVG | May 26, 22:35 UTC | May 27, 22:25 UTC | 23h 50m |
| 2026-05-26 | DKH1655 | PVG → MEL | May 26, 05:00 UTC | May 26, 20:05 UTC | 15h 5m |
| 2026-05-25 | DKH1379 | PVG → NRT | May 25, 08:35 UTC | May 26, 03:19 UTC | 18h 45m |
| 2026-05-24 | DKH1660 | BRU → PVG | May 24, 12:35 UTC | May 25, 06:35 UTC | 18h 0m |
| 2026-05-24 | DKH1660 | BRU → PVG | May 24, 10:35 UTC | May 25, 06:35 UTC | 20h 0m |
| 2026-05-24 | DKH1659 | PVG → BRU | May 24, 00:30 UTC | May 24, 04:45 UTC | 4h 15m |
| 2026-05-22 | DKH1668 | MXP → CGO | May 22, 20:35 UTC | May 23, 00:25 UTC | 3h 50m |
| 2026-05-22 | DKH1667 | CGO → MXP | May 22, 10:55 UTC | May 22, 17:50 UTC | 6h 55m |
| 2026-05-21 | DKH1882 | SZX → SHA | May 21, 06:35 UTC | May 21, 06:45 UTC | 10m |
| 2026-05-21 | DKH1881 | SHA → SZX | May 21, 04:10 UTC | May 21, 04:20 UTC | 10m |
| 2026-05-20 | DKH1885 | SHA → SZX | May 20, 09:05 UTC | May 20, 09:35 UTC | 30m |
| 2026-05-18 | DKH1662 | MAN → PVG | May 18, 10:35 UTC | May 18, 17:05 UTC | 6h 30m |
| 2026-05-17 | DKH1661 | PVG → MAN | May 17, 12:10 UTC | May 18, 05:05 UTC | 16h 55m |
| 2026-05-17 | DKH1661 | PVG → MAN | May 17, 09:10 UTC | May 18, 05:05 UTC | 19h 55m |
| 2026-05-17 | DKH1601 | PVG → SIN | May 17, 04:05 UTC | May 17, 07:05 UTC | 3h 0m |
| 2026-05-16 | DKH1882 | SZX → SHA | May 16, 03:40 UTC | May 16, 03:50 UTC | 10m |
| 2026-05-16 | DKH1881 | SHA → SZX | May 16, 01:20 UTC | May 16, 01:45 UTC | 25m |
| 2026-05-14 | DKH1386 | HND → PVG | May 14, 16:35 UTC | May 15, 11:05 UTC | 18h 30m |
| 2026-05-14 | DKH1386 | HND → PVG | May 14, 15:25 UTC | May 15, 11:05 UTC | 19h 40m |
| 2026-05-14 | DKH1385 | PVG → HND | May 14, 04:10 UTC | May 14, 13:25 UTC | 9h 15m |
| 2026-05-13 | DKH1338 | KIX → PVG | May 13, 13:45 UTC | May 14, 02:15 UTC | 12h 30m |
| 2026-05-13 | DKH1337 | PVG → KIX | May 13, 11:10 UTC | May 13, 12:00 UTC | 50m |
| 2026-05-12 | DKH1670 | SYD → PVG | May 12, 05:35 UTC | May 12, 07:45 UTC | 2h 10m |
| 2026-05-11 | DKH1380 | NRT → PVG | May 11, 04:40 UTC | May 11, 20:10 UTC | 15h 31m |
| 2026-05-10 | DKH1608 | HEL → PVG | May 10, 14:14 UTC | May 11, 02:40 UTC | 12h 25m |
| 2026-05-10 | DKH1607 | PVG → HEL | May 10, 05:04 UTC | May 10, 11:00 UTC | 5h 55m |
| 2026-05-08 | DKH1668 | MXP → CGO | May 8, 20:50 UTC | May 9, 00:30 UTC | 3h 40m |
| 2026-05-08 | DKH1667 | CGO → MXP | May 8, 09:44 UTC | May 8, 18:20 UTC | 8h 35m |
| 2026-05-07 | DKH1790 | XMN → NKG | May 7, 12:45 UTC | May 7, 12:55 UTC | 10m |
| 2026-05-07 | DKH1789 | NKG → XMN | May 7, 10:50 UTC | May 7, 11:15 UTC | 25m |
| 2026-05-07 | DKH1883 | SHA → SZX | May 7, 04:10 UTC | May 7, 04:35 UTC | 25m |
| 2026-05-06 | DKH1177 | SHA → SYX | May 6, 03:05 UTC | May 6, 09:00 UTC | 5h 56m |
| 2026-05-05 | DKH1885 | SHA → SZX | May 5, 08:35 UTC | May 5, 08:50 UTC | 15m |
| 2026-05-05 | DKH1882 | SZX → SHA | May 5, 03:45 UTC | May 5, 04:00 UTC | 15m |
| 2026-05-05 | DKH1881 | SHA → SZX | May 5, 01:40 UTC | May 5, 02:05 UTC | 25m |
| 2026-05-03 | DKH1386 | HND → PVG | May 3, 15:30 UTC | May 4, 06:45 UTC | 15h 15m |
| 2026-05-03 | DKH1385 | PVG → HND | May 3, 03:20 UTC | May 3, 13:45 UTC | 10h 24m |
| 2026-05-02 | DKH1886 | SZX → SHA | May 2, 10:25 UTC | May 2, 10:35 UTC | 10m |
| 2026-05-02 | DKH1885 | SHA → SZX | May 2, 08:35 UTC | May 2, 08:50 UTC | 15m |
| 2026-05-01 | DKH1576 | SIN → PVG | May 1, 16:10 UTC | May 1, 19:45 UTC | 3h 35m |
| 2026-05-01 | DKH1575 | PVG → SIN | May 1, 04:35 UTC | May 1, 14:10 UTC | 9h 35m |
| 2026-04-30 | DKH1608 | HEL → PVG | Apr 30, 13:55 UTC | May 1, 02:25 UTC | 12h 30m |
| 2026-04-30 | DKH1607 | PVG → HEL | Apr 30, 03:15 UTC | Apr 30, 10:55 UTC | 7h 40m |
| 2026-04-29 | DKH1881 | SHA → SZX | Apr 29, 01:54 UTC | Apr 29, 02:09 UTC | 15m |
| 2026-04-28 | DKH1886 | SZX → SHA | Apr 28, 11:20 UTC | Apr 28, 11:30 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-20EQ page for operator, model, and routing details .