Apparatus

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sensors Mode-S transponder

781DA5

ICAO 24-bit transponder address · allocated to China

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

Hex
781DA5
Octal
36016645
Decimal
7,871,909
Country
CN
Tail
B-329K
Type
A359
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
208
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 781DA5.

Country allocation

The ICAO 24-bit address 781DA5 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
CCA878 Air China 15 2026-07-25
CCA877 Air China 13 2026-07-24
CCA842 Air China 9 2026-06-27
CCA840 Air China 9 2026-07-19
CCA912 Air China 8 2026-07-02
CCA911 - 8 2026-07-01
CCA867 Air China 8 2026-07-02
CCA968 - 7 2026-07-16
CCA852 Air China 7 2026-06-18
CCA851 Air China 7 2026-06-17
CCA847 - 7 2026-07-10
CCA935 - 6 2026-07-17
CCA868 - 6 2026-07-04
CCA862 Air China 6 2026-05-26
CCA949 Air China 5 2026-07-06
CCA936 - 5 2026-07-17
CCA861 Air China 5 2026-05-26
CCA841 Air China 5 2026-06-26
CCA839 Air China 5 2026-07-19
CCA1313 Air China 5 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA570 ARN → PEK Jul 26, 20:20 UTCJul 26, 21:15 UTC55m
2026-07-26 CCA569 PEK → ARN Jul 26, 09:20 UTCJul 26, 17:40 UTC8h 20m
2026-07-26 CCA1360 CAN → PEK Jul 26, 06:35 UTCJul 26, 06:45 UTC10m
2026-07-25 CCA1359 PEK → CAN Jul 25, 23:25 UTCJul 25, 23:45 UTC20m
2026-07-25 CCA1314 SZX → PEK Jul 25, 09:35 UTCJul 25, 09:50 UTC15m
2026-07-25 CCA1313 PEK → SZX Jul 25, 03:30 UTCJul 25, 04:15 UTC45m
2026-07-25 CCA878 CPH → PEK Jul 25, 01:05 UTCJul 25, 01:25 UTC20m
2026-07-24 CCA878 CPH → PEK Jul 24, 17:25 UTCJul 24, 22:40 UTC5h 15m
2026-07-24 CCA877 PEK → CPH Jul 24, 09:35 UTCJul 24, 15:15 UTC5h 40m
2026-07-24 CCA572 CDG → CDG Jul 24, 03:30 UTCJul 24, 03:50 UTC20m
2026-07-23 CCA572 CDG → CDG Jul 23, 17:55 UTCJul 23, 21:00 UTC3h 5m
2026-07-23 CCA571 PEK → CDG Jul 23, 14:15 UTCJul 23, 15:30 UTC1h 15m
2026-07-22 CCA878 CPH → PEK Jul 22, 17:20 UTCJul 22, 22:40 UTC5h 20m
2026-07-22 CCA877 PEK → CPH Jul 22, 13:45 UTCJul 22, 14:50 UTC1h 5m
2026-07-21 CCA950 - Jul 21, 20:40 UTCJul 21, 20:55 UTC15m
2026-07-21 CCA950 - Jul 21, 12:00 UTCJul 21, 18:20 UTC6h 20m
2026-07-20 CCA967 PVG → MXP Jul 20, 10:00 UTCJul 21, 05:40 UTC19h 40m
2026-07-19 CCA840 BCN → PVG Jul 19, 13:20 UTCJul 20, 07:20 UTC18h 0m
2026-07-19 CCA840 BCN → PVG Jul 19, 11:30 UTCJul 20, 07:20 UTC19h 50m
2026-07-19 CCA839 PVG → BCN Jul 19, 05:15 UTCJul 19, 06:25 UTC1h 10m
2026-07-17 CCA936 - Jul 17, 17:40 UTCJul 18, 02:29 UTC8h 50m
2026-07-17 CCA935 - Jul 17, 05:10 UTCJul 17, 14:50 UTC9h 40m
2026-07-16 CCA935 - Jul 16, 17:20 UTCJul 17, 14:50 UTC21h 30m
2026-07-16 CCA935 - Jul 16, 16:40 UTCJul 17, 14:50 UTC22h 10m
2026-07-16 CCA968 MXP → PVG Jul 16, 13:20 UTCJul 17, 09:04 UTC19h 45m
2026-07-16 CCA968 MXP → PVG Jul 16, 11:20 UTCJul 17, 09:04 UTC21h 45m
2026-07-16 CCA968 - Jul 16, 10:50 UTCJul 17, 09:04 UTC22h 15m
2026-07-15 CCA967 - Jul 15, 11:20 UTCJul 16, 05:50 UTC18h 30m
2026-07-15 CCA967 - Jul 15, 11:05 UTCJul 16, 05:50 UTC18h 45m
2026-07-14 CCA840 - Jul 14, 13:20 UTCJul 15, 09:00 UTC19h 39m
2026-07-14 CCA840 - Jul 14, 11:20 UTCJul 15, 09:00 UTC21h 39m
2026-07-14 CCA840 - Jul 14, 10:45 UTCJul 15, 09:00 UTC22h 14m
2026-07-13 CCA839 - Jul 13, 21:30 UTCJul 14, 05:15 UTC7h 45m
2026-07-13 CCA839 - Jul 13, 04:55 UTCJul 13, 22:15 UTC17h 20m
2026-07-13 CCA936 - Jul 13, 01:40 UTCJul 13, 22:15 UTC20h 35m
2026-07-12 CCA936 - Jul 12, 20:05 UTCJul 13, 05:05 UTC9h 0m
2026-07-12 CCA935 - Jul 12, 03:05 UTCJul 12, 17:40 UTC14h 35m
2026-07-11 CCA935 - Jul 11, 21:20 UTCJul 12, 17:40 UTC20h 20m
2026-07-11 CCA935 - Jul 11, 19:20 UTCJul 12, 17:40 UTC22h 20m
2026-07-11 CCA848 - Jul 11, 17:50 UTCJul 12, 17:15 UTC23h 25m
2026-07-10 CCA847 - Jul 10, 19:15 UTCJul 11, 05:15 UTC10h 1m
2026-07-10 CCA847 - Jul 10, 07:20 UTCJul 11, 05:15 UTC21h 56m
2026-07-10 CCA930 - Jul 10, 06:50 UTCJul 11, 01:15 UTC18h 25m
2026-07-09 CCA840 BCN → NRT Jul 9, 10:20 UTCJul 10, 05:00 UTC18h 40m
2026-07-08 CCA839 - Jul 8, 09:35 UTCJul 9, 05:15 UTC19h 40m
2026-07-07 CCA968 MXP → PVG Jul 7, 13:20 UTCJul 8, 07:30 UTC18h 10m
2026-07-07 CCA968 MXP → PVG Jul 7, 11:35 UTCJul 8, 07:30 UTC19h 55m
2026-07-06 CCA949 PEK → MXP Jul 6, 21:30 UTCJul 7, 04:25 UTC6h 55m
2026-07-06 CCA1376 - Jul 6, 07:05 UTCJul 6, 07:15 UTC10m
2026-07-06 CCA1375 - Jul 6, 00:55 UTCJul 6, 01:15 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-329K page for operator, model, and routing details .

Mode-S 781DA5 frequently asked

What is Mode-S code 781DA5?
781DA5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-329K.
Where is Mode-S 781DA5 registered?
Mode-S code 781DA5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781DA5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781DA5, octal 36016645, decimal 7,871,909.
What flights does 781DA5 operate?
Mode-S 781DA5 has broadcast 20 distinct callsigns, including CCA878, CCA877, CCA842, CCA840, CCA912.