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
- 184
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 26, 16:55 UTC
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 |
|---|---|---|---|
| DKH1607 | - | 20 | 2026-07-15 |
| DKH1667 | - | 15 | 2026-06-22 |
| DKH1608 | Juneyao Airlines | 12 | 2026-07-16 |
| DKH1668 | - | 11 | 2026-06-22 |
| DKH1660 | Juneyao Airlines | 10 | 2026-07-26 |
| DKH1885 | - | 8 | 2026-06-29 |
| DKH1659 | Juneyao Airlines | 8 | 2026-07-25 |
| DKH1881 | - | 7 | 2026-06-29 |
| DKH1662 | Juneyao Airlines | 7 | 2026-07-24 |
| DKH1661 | Juneyao Airlines | 7 | 2026-07-23 |
| DKH1658 | - | 7 | 2026-06-24 |
| DKH1657 | - | 7 | 2026-06-24 |
| DKH1882 | - | 6 | 2026-06-29 |
| DKH1886 | - | 5 | 2026-06-29 |
| DKH1790 | - | 4 | 2026-07-02 |
| DKH1506 | Juneyao Airlines | 4 | 2026-07-25 |
| DKH1380 | - | 4 | 2026-07-14 |
| DKH1884 | - | 3 | 2026-07-03 |
| DKH1883 | - | 3 | 2026-07-03 |
| DKH1789 | - | 3 | 2026-07-02 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | DKH1660 | BRU → PVG | Jul 26, 10:55 UTC | Jul 26, 16:55 UTC | 6h 0m |
| 2026-07-25 | DKH1659 | PVG → BRU | Jul 25, 13:50 UTC | Jul 26, 05:20 UTC | 15h 30m |
| 2026-07-25 | DKH1506 | KIX → PVG | Jul 25, 04:15 UTC | Jul 25, 12:35 UTC | 8h 20m |
| 2026-07-24 | DKH1662 | MAN → PVG | Jul 24, 10:25 UTC | Jul 25, 02:15 UTC | 15h 50m |
| 2026-07-23 | DKH1661 | PVG → MAN | Jul 23, 13:40 UTC | Jul 24, 05:35 UTC | 15h 55m |
| 2026-07-22 | DKH1670 | SYD → PVG | Jul 22, 22:40 UTC | Jul 23, 12:15 UTC | 13h 35m |
| 2026-07-22 | DKH1669 | PVG → SYD | Jul 22, 04:30 UTC | Jul 22, 20:25 UTC | 15h 55m |
| 2026-07-21 | DKH1379 | PVG → NRT | Jul 21, 14:00 UTC | Jul 22, 03:10 UTC | 13h 10m |
| 2026-07-20 | DKH1670 | SYD → PVG | Jul 20, 23:00 UTC | Jul 21, 12:40 UTC | 13h 40m |
| 2026-07-20 | DKH1669 | PVG → SYD | Jul 20, 11:55 UTC | Jul 20, 21:00 UTC | 9h 5m |
| 2026-07-16 | DKH1355 | - | Jul 16, 21:19 UTC | Jul 17, 13:40 UTC | 16h 20m |
| 2026-07-16 | DKH1355 | - | Jul 16, 16:35 UTC | Jul 17, 13:40 UTC | 21h 5m |
| 2026-07-16 | DKH1608 | HEL → PVG | Jul 16, 14:35 UTC | Jul 17, 13:40 UTC | 23h 5m |
| 2026-07-16 | DKH1608 | HEL → PVG | Jul 16, 14:29 UTC | Jul 17, 11:35 UTC | 21h 5m |
| 2026-07-15 | DKH1607 | - | Jul 15, 14:35 UTC | Jul 16, 10:45 UTC | 20h 10m |
| 2026-07-15 | DKH1607 | KIX → HEL | Jul 15, 13:50 UTC | Jul 16, 10:45 UTC | 20h 55m |
| 2026-07-14 | DKH1656 | MEL → KIX | Jul 14, 22:10 UTC | Jul 15, 12:20 UTC | 14h 9m |
| 2026-07-14 | DKH1380 | NRT → MEL | Jul 14, 04:35 UTC | Jul 14, 20:00 UTC | 15h 25m |
| 2026-07-13 | DKH1662 | MAN → NRT | Jul 13, 10:35 UTC | Jul 14, 02:55 UTC | 16h 20m |
| 2026-07-12 | DKH1661 | KIX → MAN | Jul 12, 13:50 UTC | Jul 13, 05:20 UTC | 15h 30m |
| 2026-07-11 | DKH1337 | MEL → KIX | Jul 11, 22:15 UTC | Jul 12, 12:30 UTC | 14h 15m |
| 2026-07-11 | DKH1380 | NRT → MEL | Jul 11, 04:45 UTC | Jul 11, 20:00 UTC | 15h 15m |
| 2026-07-10 | DKH1608 | HEL → NRT | Jul 10, 14:10 UTC | Jul 11, 02:55 UTC | 12h 45m |
| 2026-07-10 | DKH1607 | - | Jul 10, 11:25 UTC | Jul 10, 11:30 UTC | 5m |
| 2026-07-09 | DKH1608 | - | Jul 9, 15:05 UTC | Jul 10, 07:35 UTC | 16h 30m |
| 2026-07-09 | DKH1607 | - | Jul 9, 12:35 UTC | Jul 9, 12:45 UTC | 10m |
| 2026-07-08 | DKH1607 | - | Jul 8, 16:35 UTC | Jul 9, 11:25 UTC | 18h 50m |
| 2026-07-08 | DKH1607 | - | Jul 8, 14:35 UTC | Jul 9, 11:25 UTC | 20h 50m |
| 2026-07-08 | DKH1660 | - | Jul 8, 12:35 UTC | Jul 9, 11:25 UTC | 22h 50m |
| 2026-07-08 | DKH1660 | - | Jul 8, 10:40 UTC | Jul 9, 08:40 UTC | 22h 0m |
| 2026-07-07 | DKH1659 | - | Jul 7, 22:50 UTC | Jul 8, 05:05 UTC | 6h 15m |
| 2026-07-07 | DKH1659 | - | Jul 7, 04:35 UTC | Jul 8, 04:30 UTC | 23h 55m |
| 2026-07-06 | DKH1662 | MAN → TPE | Jul 6, 10:40 UTC | Jul 7, 02:20 UTC | 15h 40m |
| 2026-07-05 | DKH1661 | - | Jul 5, 19:35 UTC | Jul 6, 05:25 UTC | 9h 50m |
| 2026-07-04 | DKH1662 | - | Jul 4, 10:40 UTC | Jul 4, 16:50 UTC | 6h 10m |
| 2026-07-03 | DKH1661 | - | Jul 3, 20:05 UTC | Jul 4, 06:00 UTC | 9h 55m |
| 2026-07-03 | DKH1884 | - | Jul 3, 06:35 UTC | Jul 3, 06:45 UTC | 10m |
| 2026-07-03 | DKH1883 | - | Jul 3, 04:25 UTC | Jul 3, 04:45 UTC | 20m |
| 2026-07-02 | DKH1790 | - | Jul 2, 14:35 UTC | Jul 2, 14:50 UTC | 15m |
| 2026-07-02 | DKH1789 | - | Jul 2, 12:15 UTC | Jul 2, 12:40 UTC | 25m |
| 2026-07-01 | DKH1608 | - | Jul 1, 14:20 UTC | Jul 1, 21:20 UTC | 7h 0m |
| 2026-07-01 | DKH1607 | - | Jul 1, 03:35 UTC | Jul 1, 11:15 UTC | 7h 40m |
| 2026-06-30 | DKH1884 | - | Jun 30, 05:50 UTC | Jun 30, 06:00 UTC | 10m |
| 2026-06-30 | DKH1883 | - | Jun 30, 03:55 UTC | Jun 30, 04:15 UTC | 20m |
| 2026-06-29 | DKH1886 | - | Jun 29, 10:15 UTC | Jun 29, 10:24 UTC | 10m |
| 2026-06-29 | DKH1885 | - | Jun 29, 08:29 UTC | Jun 29, 08:54 UTC | 25m |
| 2026-06-29 | DKH1882 | - | Jun 29, 03:25 UTC | Jun 29, 03:34 UTC | 10m |
| 2026-06-29 | DKH1881 | - | Jun 29, 00:54 UTC | Jun 29, 01:39 UTC | 45m |
| 2026-06-28 | DKH1886 | - | Jun 28, 13:59 UTC | Jun 28, 14:09 UTC | 10m |
| 2026-06-28 | DKH1885 | - | Jun 28, 11:04 UTC | Jun 28, 11:29 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-20EQ page for operator, model, and routing details .