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
Broadcasting now · callsign CCA840 · 39,000 ft
Flights observed
177
Distinct callsigns
20
Country
CN
Last broadcast
8m ago

Current position

781DA5 is currently broadcasting. Map zoomed to live position.

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 12 2026-07-01
CCA877 - 11 2026-06-30
CCA842 Air China 9 2026-06-27
CCA912 Air China 8 2026-07-02
CCA911 - 8 2026-07-01
CCA867 Air China 8 2026-07-02
CCA852 Air China 7 2026-06-18
CCA851 Air China 7 2026-06-17
CCA847 - 7 2026-07-10
CCA868 - 6 2026-07-04
CCA862 Air China 6 2026-05-26
CCA949 Air China 5 2026-07-06
CCA861 Air China 5 2026-05-26
CCA841 Air China 5 2026-06-26
CCA840 - 5 2026-07-14
CCA968 Air China 4 2026-07-07
CCA936 - 4 2026-07-13
CCA839 - 4 2026-07-13
CCA445 Air China 4 2026-05-12
CCA1313 Air China 4 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CCA840 - Jul 14, 10:45 UTCJul 14, 15:15 UTC4h 30m
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
2026-07-05 CCA1515 - Jul 5, 08:35 UTCJul 5, 08:45 UTC10m
2026-07-05 CCA632 - Jul 5, 04:25 UTCJul 5, 04:45 UTC20m
2026-07-04 CCA632 - Jul 4, 19:40 UTCJul 5, 02:00 UTC6h 20m
2026-07-04 CCA631 - Jul 4, 12:45 UTCJul 4, 17:15 UTC4h 30m
2026-07-04 CCA868 - Jul 4, 00:20 UTCJul 4, 00:30 UTC10m
2026-07-03 CCA868 - Jul 3, 08:30 UTCJul 3, 19:30 UTC11h 0m
2026-07-02 CCA867 SZX → JNB Jul 2, 17:20 UTCJul 3, 05:30 UTC12h 10m
2026-07-02 CCA867 SZX → JNB Jul 2, 14:10 UTCJul 2, 14:25 UTC15m
2026-07-02 CCA867 SZX → JNB Jul 2, 11:40 UTCJul 2, 11:50 UTC10m
2026-07-02 CCA912 ARN → PEK Jul 2, 00:40 UTCJul 2, 00:55 UTC15m
2026-07-01 CCA912 ARN → PEK Jul 1, 17:30 UTCJul 1, 22:10 UTC4h 40m
2026-07-01 CCA911 - Jul 1, 14:40 UTCJul 1, 15:05 UTC25m
2026-07-01 CCA911 - Jul 1, 09:40 UTCJul 1, 13:10 UTC3h 30m
2026-07-01 CCA878 CPH → PEK Jul 1, 00:55 UTCJul 1, 01:15 UTC20m
2026-06-30 CCA878 CPH → PEK Jun 30, 17:20 UTCJun 30, 22:30 UTC5h 10m
2026-06-30 CCA877 - Jun 30, 08:45 UTCJun 30, 14:35 UTC5h 50m
2026-06-30 CCA877 - Jun 30, 05:50 UTCJun 30, 06:00 UTC10m
2026-06-30 CCA878 CPH → PEK Jun 30, 01:14 UTCJun 30, 01:30 UTC16m
2026-06-29 CCA878 CPH → PEK Jun 29, 17:24 UTCJun 29, 22:44 UTC5h 20m
2026-06-29 CCA877 - Jun 29, 05:45 UTCJun 29, 14:39 UTC8h 55m
2026-06-29 CCA878 CPH → PEK Jun 29, 01:05 UTCJun 29, 01:25 UTC20m
2026-06-28 CCA878 CPH → PEK Jun 28, 17:19 UTCJun 28, 22:34 UTC5h 15m
2026-06-28 CCA877 - Jun 28, 09:10 UTCJun 28, 14:39 UTC5h 30m
2026-06-27 CCA842 VIE → PEK Jun 27, 20:09 UTCJun 27, 20:24 UTC15m
2026-06-27 CCA842 VIE → PEK Jun 27, 11:50 UTCJun 27, 13:24 UTC1h 35m
2026-06-26 CCA841 PEK → VIE Jun 26, 22:25 UTCJun 27, 04:15 UTC5h 50m
2026-06-26 CCA1407 - Jun 26, 09:05 UTCJun 26, 09:24 UTC20m
2026-06-25 CCA968 MXP → PVG Jun 25, 10:59 UTCJun 25, 17:34 UTC6h 35m
2026-06-24 CCA967 - Jun 24, 23:14 UTCJun 25, 05:55 UTC6h 40m
2026-06-23 CCA848 - Jun 23, 10:55 UTCJun 23, 20:15 UTC9h 20m
2026-06-22 CCA847 PVG → LGW Jun 22, 20:00 UTCJun 23, 06:09 UTC10h 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-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?
Yes. Mode-S 781DA5 is currently airborne.
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, CCA912, CCA911.