Apparatus

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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 7h ago
Flights observed
113
Distinct callsigns
20
Country
CN
Last broadcast
7h ago

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 China Eastern Airlines 13 2026-05-26
CES217 China Eastern Airlines 12 2026-05-22
CES788 China Eastern Airlines 10 2026-05-26
CES218 China Eastern Airlines 10 2026-05-23
CES786 China Eastern Airlines 8 2026-05-15
CES709 China Eastern Airlines 8 2026-05-29
CES561 China Eastern Airlines 7 2026-05-09
CES249 China Eastern Airlines 6 2026-05-27
CES243 China Eastern Airlines 6 2026-05-24
CES785 China Eastern Airlines 5 2026-05-14
CES710 China Eastern Airlines 5 2026-05-18
CES250 China Eastern Airlines 5 2026-05-28
CES562 China Eastern Airlines 4 2026-05-10
CES244 China Eastern Airlines 3 2026-05-25
CES7235 China Eastern Airlines 2 2026-05-12
CES581 China Eastern Airlines 2 2026-05-21
CES568 China Eastern Airlines 2 2026-04-14
CES522 China Eastern Airlines 2 2026-04-17
CES7236 China Eastern Airlines 1 2026-05-12
CES582 China Eastern Airlines 1 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CES709 PVG → MAD May 29, 18:25 UTCMay 29, 22:10 UTC3h 45m
2026-05-28 CES250 BCN → PVG May 28, 09:45 UTCMay 28, 17:20 UTC7h 35m
2026-05-27 CES249 PVG → BCN May 27, 18:20 UTCMay 28, 05:05 UTC10h 45m
2026-05-27 CES249 PVG → BCN May 27, 01:19 UTCMay 28, 01:00 UTC23h 41m
2026-05-26 CES788 FCO → PVG May 26, 23:05 UTCMay 27, 22:20 UTC23h 15m
2026-05-26 CES788 FCO → PVG May 26, 21:04 UTCMay 27, 18:40 UTC21h 35m
2026-05-26 CES788 FCO → PVG May 26, 19:25 UTCMay 27, 18:40 UTC23h 15m
2026-05-26 CES787 PVG → FCO May 26, 09:25 UTCMay 26, 16:45 UTC7h 20m
2026-05-25 CES787 PVG → FCO May 25, 17:20 UTCMay 26, 16:45 UTC23h 24m
2026-05-25 CES787 PVG → FCO May 25, 15:05 UTCMay 26, 15:00 UTC23h 54m
2026-05-25 CES244 MXP → PVG May 25, 13:05 UTCMay 26, 12:54 UTC23h 49m
2026-05-25 CES244 MXP → PVG May 25, 11:45 UTCMay 26, 10:20 UTC22h 34m
2026-05-24 CES243 PVG → MXP May 24, 23:00 UTCMay 25, 05:40 UTC6h 40m
2026-05-24 CES243 PVG → MXP May 24, 09:45 UTCMay 25, 05:40 UTC19h 55m
2026-05-24 CES243 PVG → MXP May 24, 07:50 UTCMay 25, 05:40 UTC21h 50m
2026-05-23 CES218 GVA → PVG May 23, 11:05 UTCMay 24, 06:15 UTC19h 10m
2026-05-23 CES218 GVA → PVG May 23, 10:10 UTCMay 24, 06:15 UTC20h 5m
2026-05-22 CES217 PVG → GVA May 22, 22:55 UTCMay 23, 05:50 UTC6h 54m
2026-05-22 CES217 PVG → GVA May 22, 07:05 UTCMay 23, 05:50 UTC22h 44m
2026-05-22 CES217 PVG → GVA May 22, 06:20 UTCMay 23, 05:00 UTC22h 39m
2026-05-21 CES582 YVR → PVG May 21, 20:10 UTCMay 22, 08:05 UTC11h 55m
2026-05-21 CES581 PVG → YVR May 21, 06:45 UTCMay 21, 15:30 UTC8h 45m
2026-05-20 CES581 PVG → YVR May 20, 19:20 UTCMay 21, 15:30 UTC20h 10m
2026-05-20 CES218 GVA → PVG May 20, 13:25 UTCMay 21, 08:05 UTC18h 40m
2026-05-20 CES218 GVA → PVG May 20, 11:05 UTCMay 21, 08:05 UTC21h 0m
2026-05-20 CES218 GVA → PVG May 20, 10:10 UTCMay 21, 08:05 UTC21h 55m
2026-05-19 CES217 PVG → GVA May 19, 19:05 UTCMay 20, 05:15 UTC10h 11m
2026-05-18 CES710 MAD → PVG May 18, 09:35 UTCMay 18, 17:10 UTC7h 35m
2026-05-17 CES709 PVG → MAD May 17, 18:25 UTCMay 18, 05:30 UTC11h 5m
2026-05-17 CES709 PVG → MAD May 17, 01:10 UTCMay 18, 01:00 UTC23h 50m
2026-05-16 CES788 FCO → PVG May 16, 23:05 UTCMay 17, 21:55 UTC22h 50m
2026-05-16 CES788 FCO → PVG May 16, 21:05 UTCMay 17, 18:45 UTC21h 40m
2026-05-16 CES788 FCO → PVG May 16, 19:20 UTCMay 17, 02:00 UTC6h 40m
2026-05-16 CES787 PVG → FCO May 16, 09:21 UTCMay 16, 16:25 UTC7h 5m
2026-05-15 CES787 PVG → FCO May 15, 15:25 UTCMay 16, 15:01 UTC23h 36m
2026-05-15 CES787 PVG → FCO May 15, 13:05 UTCMay 16, 13:01 UTC23h 55m
2026-05-15 CES786 VCE → PVG May 15, 11:05 UTCMay 16, 10:11 UTC23h 5m
2026-05-15 CES786 VCE → PVG May 15, 09:45 UTCMay 15, 16:15 UTC6h 29m
2026-05-14 CES785 PVG → VCE May 14, 22:00 UTCMay 15, 04:55 UTC6h 55m
2026-05-12 CES7236 HAN → PVG May 12, 22:31 UTCMay 13, 05:45 UTC7h 15m
2026-05-12 CES7235 PVG → HAN May 12, 11:05 UTCMay 12, 19:00 UTC7h 55m
2026-05-11 CES7235 PVG → HAN May 11, 15:35 UTCMay 12, 14:50 UTC23h 16m
2026-05-11 CES250 BCN → PVG May 11, 13:15 UTCMay 12, 11:40 UTC22h 26m
2026-05-11 CES250 BCN → PVG May 11, 09:30 UTCMay 11, 16:20 UTC6h 50m
2026-05-10 CES249 PVG → BCN May 10, 20:14 UTCMay 11, 05:40 UTC9h 25m
2026-05-10 CES249 PVG → BCN May 10, 09:05 UTCMay 11, 05:40 UTC20h 35m
2026-05-10 CES249 PVG → BCN May 10, 08:20 UTCMay 11, 05:40 UTC21h 20m
2026-05-10 CES562 SYD → PVG May 10, 01:09 UTCMay 11, 01:00 UTC23h 50m
2026-05-09 CES561 PVG → SYD May 9, 21:30 UTCMay 9, 22:30 UTC1h 0m
2026-05-08 CES710 MAD → PVG May 8, 09:39 UTCMay 8, 16:50 UTC7h 10m

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 7h ago.
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, CES217, CES788, CES218, CES786.