Apparatus

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sensors Mode-S transponder

781CA8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-326W · AIRBUS A-320neo

Hex
781CA8
Octal
36016250
Decimal
7,871,656
Country
CN
Tail
B-326W
Type
A20N
No current signal · last broadcast Jul 26, 14:40 UTC
Flights observed
67
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:40 UTC

Last known position

Most recent position reported by Mode-S 781CA8.

Country allocation

The ICAO 24-bit address 781CA8 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
CCA4340 Air China 6 2026-07-07
CCA427 - 6 2026-06-22
CCA428 - 5 2026-06-22
CCA9724 Air China 4 2026-07-24
CCA9723 Air China 4 2026-07-23
CCA4339 - 4 2026-07-06
CCA9635 Air China 3 2026-07-24
CCA4174 Air China 3 2026-07-26
CCA4171 - 3 2026-06-29
CCA2757 Air China 3 2026-04-30
CCA9634 - 2 2026-07-17
CCA4173 - 2 2026-06-24
CCA4172 - 2 2026-06-29
CCA9636 Air China 1 2026-07-24
CCA480 Air China 1 2026-06-12
CCA479 Air China 1 2026-06-12
CCA4336 - 1 2026-06-27
CCA4316 Air China 1 2026-05-29
CCA4315 - 1 2026-07-08
CCA4312 Air China 1 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA4174 PEK → KMG Jul 26, 14:15 UTCJul 26, 14:40 UTC25m
2026-07-26 CCA4165 KWE → PEK Jul 26, 11:30 UTCJul 26, 11:45 UTC15m
2026-07-26 CCA4162 PEK → KWE Jul 26, 03:30 UTCJul 26, 03:40 UTC10m
2026-07-25 CCA4164 PEK → KWE Jul 25, 06:15 UTCJul 25, 06:35 UTC20m
2026-07-25 CCA1826 - Jul 25, 04:10 UTCJul 25, 04:35 UTC25m
2026-07-24 CCA1825 - Jul 24, 23:30 UTCJul 24, 23:50 UTC20m
2026-07-24 CCA9636 HFE → PEK Jul 24, 15:05 UTCJul 24, 15:15 UTC10m
2026-07-24 CCA9635 PEK → HFE Jul 24, 11:10 UTCJul 24, 11:40 UTC30m
2026-07-24 CCA9724 JHG → PEK Jul 24, 00:50 UTCJul 24, 09:35 UTC8h 45m
2026-07-23 CCA9724 JHG → PEK Jul 23, 09:25 UTCJul 23, 09:55 UTC30m
2026-07-23 CCA9723 PEK → JHG Jul 23, 00:40 UTCJul 23, 01:05 UTC25m
2026-07-22 CCA9635 PEK → HFE Jul 22, 14:40 UTCJul 22, 14:50 UTC10m
2026-07-22 CCA9723 PEK → JHG Jul 22, 01:00 UTCJul 22, 01:20 UTC20m
2026-07-20 CCA4112 TFU → LXA Jul 20, 06:35 UTCJul 20, 06:55 UTC20m
2026-07-19 CCA4186 PEK → CTU Jul 19, 05:05 UTCJul 19, 05:20 UTC15m
2026-07-18 CCA1927 PEK → ZHA Jul 18, 11:45 UTCJul 18, 12:10 UTC25m
2026-07-18 CCA9724 - Jul 18, 08:45 UTCJul 18, 09:35 UTC50m
2026-07-18 CCA9723 PEK → JHG Jul 18, 00:35 UTCJul 18, 01:00 UTC25m
2026-07-17 CCA9634 - Jul 17, 05:45 UTCJul 17, 12:19 UTC6h 35m
2026-07-16 CCA9635 - Jul 16, 11:34 UTCJul 16, 11:45 UTC10m
2026-07-16 CCA9724 - Jul 16, 08:55 UTCJul 16, 09:35 UTC40m
2026-07-16 CCA9723 - Jul 16, 00:45 UTCJul 16, 01:05 UTC20m
2026-07-15 CCA9634 - Jul 15, 06:50 UTCJul 15, 13:40 UTC6h 50m
2026-07-14 CCA4181 - Jul 14, 04:25 UTCJul 14, 12:30 UTC8h 5m
2026-07-08 CCA4315 - Jul 8, 08:15 UTCJul 8, 08:25 UTC10m
2026-07-07 CCA4340 SZX → CTU Jul 7, 02:50 UTCJul 7, 03:00 UTC10m
2026-07-06 CCA4339 - Jul 6, 22:00 UTCJul 6, 22:10 UTC10m
2026-07-04 CCA4340 SZX → CTU Jul 4, 23:50 UTCJul 5, 00:00 UTC10m
2026-07-04 CCA4339 - Jul 4, 18:40 UTCJul 4, 18:50 UTC10m
2026-07-02 CCA4340 SZX → CTU Jul 2, 23:25 UTCJul 2, 23:35 UTC10m
2026-07-02 CCA4339 - Jul 2, 17:10 UTCJul 2, 17:20 UTC10m
2026-06-30 CCA4340 SZX → CTU Jun 30, 23:35 UTCJun 30, 23:45 UTC10m
2026-06-29 CCA4174 - Jun 29, 14:39 UTCJun 30, 01:40 UTC11h 1m
2026-06-29 CCA4172 - Jun 29, 03:54 UTCJun 29, 04:20 UTC25m
2026-06-29 CCA4171 - Jun 29, 01:50 UTCJun 29, 02:09 UTC20m
2026-06-27 CCA4336 - Jun 27, 15:24 UTCJun 27, 15:34 UTC10m
2026-06-24 CCA4174 - Jun 24, 14:15 UTCJun 25, 01:44 UTC11h 30m
2026-06-24 CCA4173 - Jun 24, 03:55 UTCJun 24, 11:59 UTC8h 5m
2026-06-23 CCA4171 - Jun 23, 15:09 UTCJun 24, 01:49 UTC10h 40m
2026-06-23 CCA4173 - Jun 23, 12:20 UTCJun 23, 12:45 UTC25m
2026-06-23 CCA4172 - Jun 23, 04:25 UTCJun 23, 04:50 UTC25m
2026-06-23 CCA4171 - Jun 23, 01:45 UTCJun 23, 02:15 UTC30m
2026-06-22 CCA428 - Jun 22, 09:40 UTCJun 22, 10:00 UTC20m
2026-06-22 CCA427 - Jun 22, 07:14 UTCJun 22, 07:49 UTC35m
2026-06-12 CCA480 MNL → TFU Jun 12, 18:50 UTCJun 13, 04:10 UTC9h 20m
2026-06-12 CCA479 TFU → MNL Jun 12, 09:45 UTCJun 12, 16:55 UTC7h 10m
2026-06-12 CCA427 CTU → HKG Jun 12, 07:05 UTCJun 12, 07:40 UTC35m
2026-06-07 CCA4061 KMG → SHE Jun 7, 01:30 UTCJun 7, 01:45 UTC15m
2026-06-06 CCA2683 TFU → SYX Jun 6, 02:30 UTCJun 7, 01:45 UTC23h 15m
2026-06-05 CCA2657 TFU → ZHA Jun 5, 10:50 UTCJun 5, 11:00 UTC10m

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-326W page for operator, model, and routing details .

Mode-S 781CA8 frequently asked

What is Mode-S code 781CA8?
781CA8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-326W.
Where is Mode-S 781CA8 registered?
Mode-S code 781CA8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781CA8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781CA8, octal 36016250, decimal 7,871,656.
What flights does 781CA8 operate?
Mode-S 781CA8 has broadcast 20 distinct callsigns, including CCA4340, CCA427, CCA428, CCA9724, CCA9723.