Apparatus

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sensors Mode-S transponder

781783

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20D1 · BOEING 787-9 Dreamliner

Hex
781783
Octal
36013603
Decimal
7,870,339
Country
CN
Tail
B-20D1
Type
B789
No current signal · last broadcast 2h ago
Flights observed
91
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 781783.

Country allocation

The ICAO 24-bit address 781783 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 Juneyao Airlines 18 2026-05-23
DKH1662 Juneyao Airlines 6 2026-05-29
DKH1608 Juneyao Airlines 6 2026-05-23
DKH1380 Juneyao Airlines 6 2026-05-30
DKH1670 Juneyao Airlines 5 2026-04-29
DKH1669 Juneyao Airlines 4 2026-04-13
DKH1661 Juneyao Airlines 4 2026-05-28
DKH1660 Juneyao Airlines 4 2026-05-13
DKH1338 Juneyao Airlines 4 2026-05-27
DKH1881 Juneyao Airlines 3 2026-05-17
DKH1601 Juneyao Airlines 3 2026-05-03
DKH1886 Juneyao Airlines 2 2026-05-16
DKH1882 Juneyao Airlines 2 2026-05-17
DKH1789 Juneyao Airlines 2 2026-04-24
DKH1667 Juneyao Airlines 2 2026-05-25
DKH1659 Juneyao Airlines 2 2026-05-12
DKH1657 Juneyao Airlines 2 2026-05-08
DKH1506 Juneyao Airlines 2 2026-05-27
DKH1379 Juneyao Airlines 2 2026-04-28
DKH1885 Juneyao Airlines 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 DKH1380 NRT → PVG May 30, 04:35 UTCMay 30, 12:55 UTC8h 20m
2026-05-29 DKH1662 MAN → PVG May 29, 10:45 UTCMay 30, 02:45 UTC16h 0m
2026-05-28 DKH1661 PVG → MAN May 28, 11:40 UTCMay 29, 05:05 UTC17h 25m
2026-05-28 DKH1661 PVG → MAN May 28, 08:50 UTCMay 29, 05:05 UTC20h 15m
2026-05-27 DKH1338 KIX → PVG May 27, 13:45 UTCMay 28, 06:55 UTC17h 10m
2026-05-27 DKH1506 KIX → PVG May 27, 04:09 UTCMay 27, 11:55 UTC7h 46m
2026-05-25 DKH1668 MXP → CGO May 25, 20:30 UTCMay 26, 00:29 UTC4h 0m
2026-05-25 DKH1667 CGO → MXP May 25, 10:55 UTCMay 25, 18:00 UTC7h 5m
2026-05-24 DKH1667 CGO → MXP May 24, 15:20 UTCMay 25, 14:45 UTC23h 25m
2026-05-24 DKH1385 PVG → HND May 24, 04:00 UTCMay 24, 13:20 UTC9h 20m
2026-05-23 DKH1608 HEL → PVG May 23, 14:10 UTCMay 24, 02:15 UTC12h 5m
2026-05-23 DKH1607 PVG → HEL May 23, 08:20 UTCMay 23, 10:50 UTC2h 30m
2026-05-22 DKH1607 PVG → HEL May 22, 16:00 UTCMay 23, 10:50 UTC18h 50m
2026-05-22 DKH1662 MAN → PVG May 22, 12:50 UTCMay 23, 10:50 UTC21h 59m
2026-05-22 DKH1662 MAN → PVG May 22, 10:50 UTCMay 23, 10:45 UTC23h 55m
2026-05-22 DKH1662 MAN → PVG May 22, 10:25 UTCMay 23, 08:45 UTC22h 19m
2026-05-21 DKH1661 PVG → MAN May 21, 19:30 UTCMay 22, 05:15 UTC9h 45m
2026-05-18 DKH1608 HEL → PVG May 18, 14:20 UTCMay 18, 18:35 UTC4h 14m
2026-05-18 DKH1607 PVG → HEL May 18, 10:15 UTCMay 18, 10:25 UTC10m
2026-05-18 DKH1607 PVG → HEL May 18, 02:40 UTCMay 18, 08:20 UTC5h 40m
2026-05-17 DKH1607 PVG → HEL May 17, 04:30 UTCMay 18, 02:45 UTC22h 15m
2026-05-17 DKH1882 SZX → SHA May 17, 03:30 UTCMay 17, 03:40 UTC10m
2026-05-17 DKH1881 SHA → SZX May 17, 01:35 UTCMay 17, 01:55 UTC20m
2026-05-16 DKH1886 SZX → SHA May 16, 10:25 UTCMay 16, 10:35 UTC10m
2026-05-15 DKH1338 KIX → PVG May 15, 13:55 UTCMay 16, 08:36 UTC18h 40m
2026-05-14 DKH1656 MEL → PVG May 14, 22:15 UTCMay 15, 12:25 UTC14h 10m
2026-05-14 DKH1655 PVG → MEL May 14, 04:40 UTCMay 14, 20:10 UTC15h 30m
2026-05-13 DKH1660 BRU → PVG May 13, 10:50 UTCMay 14, 03:00 UTC16h 10m
2026-05-12 DKH1659 PVG → BRU May 12, 20:55 UTCMay 13, 04:35 UTC7h 40m
2026-05-11 DKH1506 KIX → PVG May 11, 04:05 UTCMay 11, 04:50 UTC45m
2026-05-10 DKH1386 HND → PVG May 10, 15:39 UTCMay 11, 02:10 UTC10h 30m
2026-05-10 DKH1380 NRT → PVG May 10, 04:39 UTCMay 10, 13:14 UTC8h 35m
2026-05-09 DKH1658 ATH → PVG May 9, 11:25 UTCMay 10, 03:20 UTC15h 55m
2026-05-08 DKH1657 PVG → ATH May 8, 08:59 UTCMay 9, 04:30 UTC19h 30m
2026-05-07 DKH1608 HEL → PVG May 7, 14:00 UTCMay 8, 06:25 UTC16h 24m
2026-05-07 DKH1607 PVG → HEL May 7, 02:45 UTCMay 7, 10:45 UTC8h 0m
2026-05-06 DKH1607 PVG → HEL May 6, 11:40 UTCMay 7, 10:45 UTC23h 5m
2026-05-06 DKH1607 PVG → HEL May 6, 08:55 UTCMay 7, 08:45 UTC23h 50m
2026-05-05 DKH1608 HEL → PVG May 5, 14:05 UTCMay 6, 06:35 UTC16h 30m
2026-05-05 DKH1607 PVG → HEL May 5, 02:55 UTCMay 5, 10:55 UTC8h 0m
2026-05-04 DKH1607 PVG → HEL May 4, 15:45 UTCMay 5, 10:55 UTC19h 11m
2026-05-04 DKH1607 PVG → HEL May 4, 12:50 UTCMay 5, 10:55 UTC22h 6m
2026-05-04 DKH1662 MAN → PVG May 4, 10:50 UTCMay 5, 10:45 UTC23h 56m
2026-05-04 DKH1662 MAN → PVG May 4, 10:20 UTCMay 5, 08:45 UTC22h 26m
2026-05-03 DKH1661 PVG → MAN May 3, 10:50 UTCMay 4, 05:35 UTC18h 45m
2026-05-03 DKH1601 PVG → SIN May 3, 05:20 UTCMay 3, 08:45 UTC3h 25m
2026-05-02 DKH1601 PVG → SIN May 2, 11:50 UTCMay 3, 08:45 UTC20h 54m
2026-05-02 DKH1601 PVG → SIN May 2, 09:00 UTCMay 3, 08:45 UTC23h 44m
2026-05-01 DKH1660 BRU → PVG May 1, 12:50 UTCMay 2, 06:50 UTC18h 0m
2026-05-01 DKH1660 BRU → PVG May 1, 10:50 UTCMay 2, 06:50 UTC20h 0m

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-20D1 page for operator, model, and routing details .

Mode-S 781783 frequently asked

What is Mode-S code 781783?
781783 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20D1.
Where is Mode-S 781783 registered?
Mode-S code 781783 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781783 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781783, octal 36013603, decimal 7,870,339.
What flights does 781783 operate?
Mode-S 781783 has broadcast 20 distinct callsigns, including DKH1607, DKH1662, DKH1608, DKH1380, DKH1670.