Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781634

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-306Y · AIRBUS A-350-900

Hex
781634
Octal
36013064
Decimal
7,870,004
Country
CN
Tail
B-306Y
Type
A359
No current signal · last broadcast 26m ago
Flights observed
176
Distinct callsigns
20
Country
CN
Last broadcast
26m ago

Last known position

Most recent position reported by Mode-S 781634.

Country allocation

The ICAO 24-bit address 781634 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
CES249 China Eastern Airlines 21 2026-07-01
CES250 China Eastern Airlines 15 2026-07-02
CES787 - 10 2026-07-09
CES710 - 10 2026-07-08
CES243 China Eastern Airlines 9 2026-05-25
CES788 - 8 2026-07-09
CES709 China Eastern Airlines 8 2026-07-07
CES261 - 8 2026-04-29
CES5341 - 7 2026-06-23
CES262 - 7 2026-04-30
CES218 - 7 2026-07-12
CES581 - 6 2026-07-13
CES561 China Eastern Airlines 6 2026-07-06
CES244 China Eastern Airlines 6 2026-05-26
CES217 - 6 2026-06-25
CES5350 - 5 2026-06-23
CES582 - 4 2026-07-13
CES562 - 4 2026-07-07
CES785 China Eastern Airlines 3 2026-06-27
CES567 China Eastern Airlines 3 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CES582 - Jul 13, 22:50 UTCJul 14, 03:00 UTC4h 10m
2026-07-13 CES581 - Jul 13, 01:45 UTCJul 13, 20:15 UTC18h 30m
2026-07-12 CES581 - Jul 12, 23:05 UTCJul 13, 20:15 UTC21h 10m
2026-07-12 CES218 - Jul 12, 21:05 UTCJul 13, 20:15 UTC23h 10m
2026-07-12 CES218 - Jul 12, 19:50 UTCJul 13, 11:40 UTC15h 50m
2026-07-12 CES217D - Jul 12, 07:50 UTCJul 12, 17:45 UTC9h 55m
2026-07-11 CES728 - Jul 11, 04:30 UTCJul 11, 06:01 UTC1h 30m
2026-07-11 CES727 - Jul 11, 01:05 UTCJul 11, 02:55 UTC1h 50m
2026-07-09 CES788 - Jul 9, 20:05 UTCJul 10, 02:55 UTC6h 50m
2026-07-09 CES787 - Jul 9, 11:00 UTCJul 9, 17:55 UTC6h 55m
2026-07-08 CES787 - Jul 8, 17:05 UTCJul 9, 17:00 UTC23h 55m
2026-07-08 CES787 - Jul 8, 16:35 UTCJul 9, 11:45 UTC19h 10m
2026-07-08 CES710 - Jul 8, 13:05 UTCJul 9, 11:45 UTC22h 40m
2026-07-08 CES710 - Jul 8, 11:05 UTCJul 9, 11:00 UTC23h 55m
2026-07-08 CES710 - Jul 8, 09:35 UTCJul 8, 17:15 UTC7h 40m
2026-07-07 CES709 PVG → MAD Jul 7, 18:35 UTCJul 8, 05:30 UTC10h 55m
2026-07-07 CES709 PVG → MAD Jul 7, 09:05 UTCJul 8, 05:30 UTC20h 25m
2026-07-07 CES709 PVG → MAD Jul 7, 08:20 UTCJul 8, 05:30 UTC21h 10m
2026-07-07 CES562 - Jul 7, 01:20 UTCJul 8, 00:55 UTC23h 35m
2026-07-06 CES561 PVG → SYD Jul 6, 13:55 UTCJul 6, 22:50 UTC8h 55m
2026-07-06 CES5342 - Jul 6, 06:45 UTCJul 6, 06:55 UTC10m
2026-07-06 CES5331 - Jul 6, 04:40 UTCJul 6, 04:50 UTC10m
2026-07-05 CES256 - Jul 5, 13:00 UTCJul 6, 03:40 UTC14h 40m
2026-07-04 CES255 - Jul 4, 11:30 UTCJul 5, 06:00 UTC18h 30m
2026-07-04 CES255 - Jul 4, 09:15 UTCJul 5, 06:00 UTC20h 45m
2026-07-04 CES255 - Jul 4, 03:05 UTCJul 5, 02:55 UTC23h 50m
2026-07-04 CES562 - Jul 4, 02:15 UTCJul 4, 23:50 UTC21h 35m
2026-07-03 CES561 PVG → SYD Jul 3, 15:05 UTCJul 4, 00:05 UTC9h 0m
2026-07-02 CES250 BCN → PVG Jul 2, 09:20 UTCJul 2, 16:35 UTC7h 15m
2026-07-01 CES249 PVG → BCN Jul 1, 18:30 UTCJul 2, 05:35 UTC11h 5m
2026-07-01 CES249 PVG → BCN Jul 1, 07:05 UTCJul 2, 05:35 UTC22h 30m
2026-07-01 CES249 PVG → BCN Jul 1, 05:45 UTCJul 2, 05:00 UTC23h 15m
2026-06-30 CES250 BCN → PVG Jun 30, 09:30 UTCJul 1, 04:10 UTC18h 40m
2026-06-29 CES249 PVG → BCN Jun 29, 21:34 UTCJun 30, 05:35 UTC8h 1m
2026-06-29 CES249 PVG → BCN Jun 29, 09:05 UTCJun 30, 05:35 UTC20h 31m
2026-06-29 CES249 PVG → BCN Jun 29, 08:19 UTCJun 30, 05:35 UTC21h 16m
2026-06-28 CES786 - Jun 28, 11:04 UTCJun 29, 06:40 UTC19h 35m
2026-06-28 CES786 - Jun 28, 10:10 UTCJun 29, 06:40 UTC20h 30m
2026-06-27 CES785 PVG → VCE Jun 27, 19:09 UTCJun 28, 04:44 UTC9h 35m
2026-06-27 CES785 PVG → VCE Jun 27, 07:04 UTCJun 28, 04:44 UTC21h 40m
2026-06-27 CES785 PVG → VCE Jun 27, 05:59 UTCJun 28, 04:44 UTC22h 45m
2026-06-26 CES218 - Jun 26, 10:20 UTCJun 27, 04:15 UTC17h 55m
2026-06-25 CES217 - Jun 25, 11:59 UTCJun 26, 04:39 UTC16h 40m
2026-06-23 CES5350 - Jun 23, 10:44 UTCJun 23, 10:55 UTC10m
2026-06-23 CES5341 - Jun 23, 07:49 UTCJun 23, 08:09 UTC20m
2026-06-18 CES5341 - Jun 18, 14:10 UTCJun 18, 14:50 UTC40m
2026-06-16 CES5341 - Jun 16, 10:04 UTCJun 16, 10:25 UTC20m
2026-06-14 CES5350 - Jun 14, 11:35 UTCJun 14, 11:50 UTC15m
2026-06-12 CES5350 SZX → SHA Jun 12, 10:40 UTCJun 12, 10:50 UTC10m
2026-06-12 CES5341 SHA → SZX Jun 12, 07:45 UTCJun 12, 08:05 UTC20m

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-306Y page for operator, model, and routing details .

Mode-S 781634 frequently asked

What is Mode-S code 781634?
781634 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-306Y.
Where is Mode-S 781634 registered?
Mode-S code 781634 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781634 broadcasting right now?
No active broadcast right now. Last signal was 26m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781634, octal 36013064, decimal 7,870,004.
What flights does 781634 operate?
Mode-S 781634 has broadcast 20 distinct callsigns, including CES249, CES250, CES787, CES710, CES243.