Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781D9C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-329E · AIRBUS A-350-900

Hex
781D9C
Octal
36016634
Decimal
7,871,900
Country
CN
Tail
B-329E
Type
A359
No current signal · last broadcast Jul 26, 18:35 UTC
Flights observed
235
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 18:35 UTC

Last known position

Most recent position reported by Mode-S 781D9C.

Country allocation

The ICAO 24-bit address 781D9C 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 - 28 2026-07-12
CES788 - 21 2026-07-13
CES217 - 16 2026-07-17
CES561 China Eastern Airlines 15 2026-07-22
CES218 - 15 2026-07-18
CES709 - 14 2026-07-10
CES786 China Eastern Airlines 13 2026-06-12
CES243 - 12 2026-07-13
CES710 - 11 2026-07-11
CES562 China Eastern Airlines 10 2026-07-23
CES785 China Eastern Airlines 9 2026-06-11
CES250 China Eastern Airlines 8 2026-07-24
CES249 China Eastern Airlines 8 2026-07-23
CES256 China Eastern Airlines 6 2026-07-26
CES255 China Eastern Airlines 6 2026-07-25
CES244 - 6 2026-07-14
CES568 - 4 2026-06-16
CES565 China Eastern Airlines 4 2026-07-18
CES781 - 3 2026-07-09
CES566 - 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CES256 ZRH → PVG Jul 26, 12:25 UTCJul 26, 18:35 UTC6h 10m
2026-07-25 CES255 PVG → ORD Jul 25, 11:50 UTCJul 26, 05:50 UTC18h 0m
2026-07-24 CES6049 PVG → SIN Jul 24, 16:15 UTCJul 25, 10:10 UTC17h 55m
2026-07-24 CES250 BCN → PVG Jul 24, 13:10 UTCJul 25, 10:10 UTC21h 0m
2026-07-24 CES250 BCN → PVG Jul 24, 11:05 UTCJul 25, 10:10 UTC23h 5m
2026-07-24 CES250 BCN → PVG Jul 24, 09:40 UTCJul 25, 07:10 UTC21h 30m
2026-07-23 CES249 PVG → BCN Jul 23, 18:25 UTCJul 24, 05:05 UTC10h 40m
2026-07-23 CES249 PVG → BCN Jul 23, 10:10 UTCJul 24, 05:05 UTC18h 55m
2026-07-23 CES562 SYD → PVG Jul 23, 01:25 UTCJul 23, 18:40 UTC17h 15m
2026-07-22 CES561 PVG → SYD Jul 22, 03:20 UTCJul 22, 22:55 UTC19h 35m
2026-07-21 CES562 SYD → PVG Jul 21, 09:45 UTCJul 22, 03:35 UTC17h 50m
2026-07-21 CES562 SYD → PVG Jul 21, 01:20 UTCJul 21, 10:15 UTC8h 55m
2026-07-20 CES561 - Jul 20, 13:55 UTCJul 20, 22:45 UTC8h 50m
2026-07-19 CES566 - Jul 19, 19:05 UTCJul 20, 13:55 UTC18h 50m
2026-07-19 CES566 - Jul 19, 18:55 UTCJul 20, 13:55 UTC19h 0m
2026-07-19 CES566 - Jul 19, 15:50 UTCJul 20, 13:55 UTC22h 5m
2026-07-18 CES565 PVG → SIN Jul 18, 17:05 UTCJul 19, 11:35 UTC18h 30m
2026-07-18 CES565 PVG → SIN Jul 18, 16:40 UTCJul 19, 11:35 UTC18h 55m
2026-07-18 CES218 - Jul 18, 13:05 UTCJul 19, 11:35 UTC22h 30m
2026-07-18 CES218 - Jul 18, 11:05 UTCJul 19, 08:30 UTC21h 25m
2026-07-17 CES217 - Jul 17, 12:40 UTCJul 18, 05:35 UTC16h 56m
2026-07-17 CES217 - Jul 17, 09:15 UTCJul 18, 05:35 UTC20h 21m
2026-07-16 CES256 - Jul 16, 13:05 UTCJul 17, 07:40 UTC18h 35m
2026-07-16 CES256 - Jul 16, 12:25 UTCJul 17, 07:40 UTC19h 15m
2026-07-15 CES255 - Jul 15, 22:40 UTCJul 16, 05:15 UTC6h 35m
2026-07-15 CES255 - Jul 15, 07:05 UTCJul 16, 05:15 UTC22h 10m
2026-07-15 CES255 - Jul 15, 06:10 UTCJul 16, 05:00 UTC22h 50m
2026-07-14 CES244 MXP → NRT Jul 14, 12:05 UTCJul 15, 04:20 UTC16h 14m
2026-07-13 CES243 - Jul 13, 19:20 UTCJul 14, 05:30 UTC10h 10m
2026-07-13 CES788 - Jul 13, 01:05 UTCJul 13, 23:15 UTC22h 10m
2026-07-12 CES788 - Jul 12, 23:15 UTCJul 13, 23:00 UTC23h 45m
2026-07-12 CES787 - Jul 12, 13:50 UTCJul 12, 21:05 UTC7h 15m
2026-07-12 CES787 - Jul 12, 01:15 UTCJul 12, 21:05 UTC19h 50m
2026-07-11 CES787 - Jul 11, 21:05 UTCJul 12, 21:00 UTC23h 55m
2026-07-11 CES710 - Jul 11, 19:05 UTCJul 12, 19:01 UTC23h 55m
2026-07-11 CES710 - Jul 11, 18:10 UTCJul 12, 17:01 UTC22h 50m
2026-07-10 CES709 - Jul 10, 18:35 UTCJul 11, 05:40 UTC11h 5m
2026-07-10 CES709 - Jul 10, 07:05 UTCJul 11, 05:40 UTC22h 35m
2026-07-10 CES709 - Jul 10, 06:35 UTCJul 11, 05:01 UTC22h 26m
2026-07-10 CES709 - Jul 10, 03:20 UTCJul 11, 03:01 UTC23h 40m
2026-07-10 CES782 - Jul 10, 00:20 UTCJul 10, 22:20 UTC22h 0m
2026-07-09 CES781 - Jul 9, 03:20 UTCJul 9, 21:45 UTC18h 25m
2026-07-02 CES788 - Jul 2, 19:25 UTCJul 3, 01:55 UTC6h 30m
2026-07-02 CES787 PVG → FCO Jul 2, 09:25 UTCJul 2, 16:50 UTC7h 25m
2026-07-01 CES787 PVG → FCO Jul 1, 19:40 UTCJul 2, 16:50 UTC21h 10m
2026-07-01 CES787 PVG → FCO Jul 1, 18:50 UTCJul 2, 16:50 UTC22h 0m
2026-07-01 CES787 PVG → FCO Jul 1, 15:45 UTCJul 2, 10:10 UTC18h 25m
2026-07-01 CES565 - Jul 1, 09:45 UTCJul 1, 13:35 UTC3h 50m
2026-06-30 CES565 - Jun 30, 18:05 UTCJul 1, 13:35 UTC19h 30m
2026-06-30 CES256 - Jun 30, 15:05 UTCJul 1, 13:35 UTC22h 30m

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-329E page for operator, model, and routing details .

Mode-S 781D9C frequently asked

What is Mode-S code 781D9C?
781D9C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-329E.
Where is Mode-S 781D9C registered?
Mode-S code 781D9C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781D9C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781D9C, octal 36016634, decimal 7,871,900.
What flights does 781D9C operate?
Mode-S 781D9C has broadcast 20 distinct callsigns, including CES787, CES788, CES217, CES561, CES218.