Apparatus

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sensors Mode-S transponder

781684

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-307Y · AIRBUS A-350-900

Hex
781684
Octal
36013204
Decimal
7,870,084
Country
CN
Tail
B-307Y
Type
A359
No current signal · last broadcast 56m ago
Flights observed
103
Distinct callsigns
20
Country
CN
Last broadcast
56m ago

Last known position

Most recent position reported by Mode-S 781684.

Country allocation

The ICAO 24-bit address 781684 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
CES787 China Eastern Airlines 11 2026-05-23
CES788 China Eastern Airlines 8 2026-05-24
CES709 China Eastern Airlines 8 2026-05-06
CES223 China Eastern Airlines 8 2026-05-24
CES224 China Eastern Airlines 7 2026-05-25
CES217 China Eastern Airlines 6 2026-05-21
CES710 China Eastern Airlines 5 2026-05-07
CES568 China Eastern Airlines 4 2026-05-27
CES567 China Eastern Airlines 4 2026-05-27
CES561 China Eastern Airlines 4 2026-05-20
CES243 China Eastern Airlines 4 2026-04-22
CES218 China Eastern Airlines 4 2026-05-22
CES785 China Eastern Airlines 3 2026-05-29
CES752 - 3 2026-05-28
CES562 China Eastern Airlines 3 2026-05-21
CES786 China Eastern Airlines 2 2026-05-30
CES736 China Eastern Airlines 2 2026-05-11
CES5331 China Eastern Airlines 2 2026-05-08
CES523 China Eastern Airlines 2 2026-04-17
CES250 China Eastern Airlines 2 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CES786 VCE → PVG May 30, 09:45 UTCMay 30, 16:15 UTC6h 30m
2026-05-29 CES785 PVG → VCE May 29, 19:00 UTCMay 30, 04:30 UTC9h 30m
2026-05-28 CES752 - May 28, 23:15 UTCMay 29, 22:50 UTC23h 36m
2026-05-28 CES752 - May 28, 21:05 UTCMay 29, 19:20 UTC22h 16m
2026-05-28 CES752 - May 28, 19:30 UTCMay 29, 19:00 UTC23h 30m
2026-05-28 CES751 - May 28, 08:55 UTCMay 28, 15:35 UTC6h 40m
2026-05-27 CES568 SIN → PVG May 27, 09:05 UTCMay 27, 13:20 UTC4h 15m
2026-05-27 CES567 PVG → SIN May 27, 03:14 UTCMay 27, 04:14 UTC1h 0m
2026-05-25 CES224 CAI → PVG May 25, 11:50 UTCMay 25, 17:45 UTC5h 55m
2026-05-24 CES223 PVG → CAI May 24, 23:15 UTCMay 25, 05:15 UTC6h 0m
2026-05-24 CES788 FCO → PVG May 24, 01:10 UTCMay 24, 23:20 UTC22h 10m
2026-05-23 CES788 FCO → PVG May 23, 19:15 UTCMay 24, 01:55 UTC6h 40m
2026-05-23 CES787 PVG → FCO May 23, 09:25 UTCMay 23, 16:35 UTC7h 10m
2026-05-22 CES787 PVG → FCO May 22, 16:05 UTCMay 23, 15:00 UTC22h 54m
2026-05-22 CES218 GVA → PVG May 22, 13:05 UTCMay 23, 13:00 UTC23h 54m
2026-05-22 CES218 GVA → PVG May 22, 11:05 UTCMay 23, 10:15 UTC23h 10m
2026-05-22 CES218 GVA → PVG May 22, 10:20 UTCMay 22, 16:50 UTC6h 30m
2026-05-21 CES217 PVG → GVA May 21, 19:00 UTCMay 22, 05:05 UTC10h 5m
2026-05-21 CES217 PVG → GVA May 21, 09:10 UTCMay 22, 05:05 UTC19h 55m
2026-05-21 CES217 PVG → GVA May 21, 08:05 UTCMay 22, 05:05 UTC21h 0m
2026-05-21 CES562 SYD → PVG May 21, 01:10 UTCMay 22, 01:00 UTC23h 50m
2026-05-20 CES561 PVG → SYD May 20, 21:10 UTCMay 20, 22:15 UTC1h 5m
2026-05-20 CES561 PVG → SYD May 20, 01:25 UTCMay 20, 22:15 UTC20h 51m
2026-05-19 CES788 FCO → PVG May 19, 23:05 UTCMay 20, 22:15 UTC23h 11m
2026-05-19 CES788 FCO → PVG May 19, 19:25 UTCMay 20, 02:10 UTC6h 45m
2026-05-19 CES787 PVG → FCO May 19, 06:05 UTCMay 19, 16:40 UTC10h 35m
2026-05-18 CES787 PVG → FCO May 18, 13:15 UTCMay 19, 13:00 UTC23h 44m
2026-05-18 CES787 PVG → FCO May 18, 12:25 UTCMay 19, 10:00 UTC21h 34m
2026-05-18 CES568 SIN → PVG May 18, 09:35 UTCMay 19, 06:15 UTC20h 39m
2026-05-18 CES567 PVG → SIN May 18, 03:20 UTCMay 18, 07:50 UTC4h 30m
2026-05-16 CES262 - May 16, 20:35 UTCMay 17, 04:05 UTC7h 30m
2026-05-16 CES261 - May 16, 08:36 UTCMay 16, 16:45 UTC8h 10m
2026-05-15 CES5343 PVG → SZX May 15, 12:20 UTCMay 15, 12:45 UTC25m
2026-05-14 CES224 CAI → PVG May 14, 13:45 UTCMay 15, 11:30 UTC21h 45m
2026-05-14 CES224 CAI → PVG May 14, 11:55 UTCMay 14, 14:40 UTC2h 45m
2026-05-14 CES223 PVG → CAI May 14, 01:30 UTCMay 14, 05:25 UTC3h 55m
2026-05-12 CES788 FCO → PVG May 12, 19:20 UTCMay 13, 02:00 UTC6h 40m
2026-05-12 CES787 PVG → FCO May 12, 09:20 UTCMay 12, 16:40 UTC7h 20m
2026-05-11 CES787 PVG → FCO May 11, 19:05 UTCMay 12, 16:40 UTC21h 35m
2026-05-11 CES787 PVG → FCO May 11, 17:45 UTCMay 12, 16:40 UTC22h 55m
2026-05-11 CES736 SYD → PVG May 11, 11:05 UTCMay 12, 10:05 UTC23h 1m
2026-05-11 CES736 SYD → PVG May 11, 10:40 UTCMay 11, 20:10 UTC9h 31m
2026-05-11 CES735 PVG → SYD May 11, 00:49 UTCMay 11, 01:50 UTC1h 0m
2026-05-09 CES224 CAI → PVG May 9, 11:50 UTCMay 9, 17:25 UTC5h 35m
2026-05-09 CES223 PVG → CAI May 9, 02:30 UTCMay 9, 05:35 UTC3h 5m
2026-05-08 CES5342 SZX → PVG May 8, 05:49 UTCMay 8, 05:59 UTC10m
2026-05-08 CES5331 PVG → SZX May 8, 03:30 UTCMay 8, 03:39 UTC10m
2026-05-07 CES710 MAD → PVG May 7, 09:40 UTCMay 7, 16:55 UTC7h 15m
2026-05-06 CES709 PVG → MAD May 6, 12:25 UTCMay 7, 06:10 UTC17h 44m
2026-05-06 CES709 PVG → MAD May 6, 09:35 UTCMay 7, 06:10 UTC20h 34m

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-307Y page for operator, model, and routing details .

Mode-S 781684 frequently asked

What is Mode-S code 781684?
781684 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-307Y.
Where is Mode-S 781684 registered?
Mode-S code 781684 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781684 broadcasting right now?
No active broadcast right now. Last signal was 56m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781684, octal 36013204, decimal 7,870,084.
What flights does 781684 operate?
Mode-S 781684 has broadcast 20 distinct callsigns, including CES787, CES788, CES709, CES223, CES224.