Apparatus

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sensors Mode-S transponder

781C6E

ICAO 24-bit transponder address · allocated to China

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

Hex
781C6E
Octal
36016156
Decimal
7,871,598
Country
CN
Tail
B-326A
Type
A20N
No current signal · last broadcast 3d ago
Flights observed
87
Distinct callsigns
20
Country
CN
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 781C6E.

Country allocation

The ICAO 24-bit address 781C6E 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
CCA427 - 8 2026-07-14
CCA4171 - 8 2026-07-18
CCA428 - 7 2026-07-14
CCA4173 - 6 2026-07-18
CCA4172 - 6 2026-07-16
CCA4174 - 5 2026-07-18
CCA4340 Air China 4 2026-06-10
CCA480 - 3 2026-07-01
CCA479 - 3 2026-07-01
CCA4061 - 3 2026-06-28
CCA4339 Air China 2 2026-06-10
CCA4324 Air China 2 2026-05-29
CCA4323 Air China 2 2026-05-29
CCA4182 Air China 2 2026-06-28
CCA4164 - 2 2026-06-26
CCA4116 - 2 2026-06-29
CCA1325 Air China 2 2026-05-21
CCA1324 Air China 2 2026-05-20
CCA1323 Air China 2 2026-05-20
CCA8202 Air China 1 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CCA4174 - Jul 18, 14:05 UTCJul 18, 14:30 UTC25m
2026-07-18 CCA4173 - Jul 18, 04:10 UTCJul 18, 12:00 UTC7h 50m
2026-07-18 CCA4171 - Jul 18, 01:34 UTCJul 18, 02:05 UTC30m
2026-07-16 CCA4174 - Jul 16, 14:15 UTCJul 17, 02:15 UTC12h 0m
2026-07-16 CCA4173 - Jul 16, 12:00 UTCJul 16, 12:30 UTC30m
2026-07-16 CCA4172 - Jul 16, 03:50 UTCJul 16, 04:10 UTC20m
2026-07-16 CCA4171 - Jul 16, 01:40 UTCJul 16, 02:05 UTC25m
2026-07-15 CCA4174 - Jul 15, 15:25 UTCJul 15, 15:45 UTC20m
2026-07-15 CCA4173 - Jul 15, 03:55 UTCJul 15, 12:15 UTC8h 20m
2026-07-15 CCA4171 - Jul 15, 01:35 UTCJul 15, 02:05 UTC30m
2026-07-14 CCA428 - Jul 14, 09:50 UTCJul 14, 10:10 UTC20m
2026-07-14 CCA427 ZGN → HKG Jul 14, 07:20 UTCJul 14, 07:55 UTC35m
2026-07-12 CCA428 - Jul 12, 09:45 UTCJul 12, 10:05 UTC20m
2026-07-12 CCA427 - Jul 12, 07:05 UTCJul 12, 07:40 UTC35m
2026-07-11 CCA428 - Jul 11, 09:50 UTCJul 11, 10:05 UTC15m
2026-07-11 CCA427 - Jul 11, 07:05 UTCJul 11, 07:40 UTC35m
2026-07-09 CCA4174 - Jul 9, 14:10 UTCJul 9, 14:40 UTC30m
2026-07-09 CCA4173 - Jul 9, 12:20 UTCJul 9, 12:40 UTC20m
2026-07-09 CCA4172 - Jul 9, 04:45 UTCJul 9, 05:00 UTC15m
2026-07-08 CCA4171 - Jul 8, 14:15 UTCJul 9, 02:20 UTC12h 5m
2026-07-08 CCA4172 - Jul 8, 03:50 UTCJul 8, 12:25 UTC8h 35m
2026-07-07 CCA4171 - Jul 7, 15:50 UTCJul 8, 02:20 UTC10h 30m
2026-07-07 CCA4172 - Jul 7, 03:55 UTCJul 7, 12:15 UTC8h 20m
2026-07-07 CCA4171 - Jul 7, 01:50 UTCJul 7, 02:15 UTC25m
2026-07-05 CCA2655 TFU → HUZ Jul 5, 01:25 UTCJul 5, 01:55 UTC30m
2026-07-01 CCA480 - Jul 1, 18:55 UTCJul 1, 20:35 UTC1h 40m
2026-07-01 CCA479 - Jul 1, 15:10 UTCJul 1, 16:55 UTC1h 45m
2026-07-01 CCA428 - Jul 1, 09:55 UTCJul 1, 10:15 UTC20m
2026-07-01 CCA427 - Jul 1, 07:00 UTCJul 1, 07:30 UTC30m
2026-06-29 CCA4116 - Jun 29, 06:59 UTCJun 29, 07:30 UTC30m
2026-06-28 CCA4182 PEK → CTU Jun 28, 23:14 UTCJun 28, 23:34 UTC20m
2026-06-28 CCA4181 - Jun 28, 15:34 UTCJun 28, 16:05 UTC30m
2026-06-28 CCA4061 - Jun 28, 01:44 UTCJun 28, 01:55 UTC10m
2026-06-27 CCA4061 - Jun 27, 05:15 UTCJun 28, 01:55 UTC20h 40m
2026-06-27 CCA4061 - Jun 27, 01:24 UTCJun 27, 05:19 UTC3h 55m
2026-06-26 CCA4164 - Jun 26, 05:35 UTCJun 27, 05:19 UTC23h 45m
2026-06-26 CCA4164 - Jun 26, 05:19 UTCJun 27, 01:35 UTC20h 15m
2026-06-25 CCA4162 - Jun 25, 03:04 UTCJun 25, 03:24 UTC20m
2026-06-22 CCA480 - Jun 22, 19:05 UTCJun 22, 20:39 UTC1h 35m
2026-06-22 CCA479 - Jun 22, 09:19 UTCJun 22, 17:29 UTC8h 10m
2026-06-21 CCA428 - Jun 21, 09:55 UTCJun 21, 10:09 UTC15m
2026-06-21 CCA427 - Jun 21, 07:04 UTCJun 21, 07:45 UTC40m
2026-06-17 CCA428 - Jun 17, 10:10 UTCJun 17, 10:30 UTC20m
2026-06-17 CCA427 - Jun 17, 07:05 UTCJun 17, 07:40 UTC35m
2026-06-15 CCA480 - Jun 15, 19:00 UTCJun 15, 19:35 UTC35m
2026-06-15 CCA479 HKG → MNL Jun 15, 10:30 UTCJun 15, 17:15 UTC6h 45m
2026-06-15 CCA427 - Jun 15, 06:55 UTCJun 15, 07:35 UTC40m
2026-06-10 CCA4340 SZX → CTU Jun 10, 23:35 UTCJun 10, 23:45 UTC10m
2026-06-10 CCA4339 CTU → SZX Jun 10, 15:05 UTCJun 10, 15:15 UTC10m
2026-06-04 CCA4340 SZX → CTU Jun 4, 23:35 UTCJun 4, 23:50 UTC15m

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

Mode-S 781C6E frequently asked

What is Mode-S code 781C6E?
781C6E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-326A.
Where is Mode-S 781C6E registered?
Mode-S code 781C6E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781C6E broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781C6E, octal 36016156, decimal 7,871,598.
What flights does 781C6E operate?
Mode-S 781C6E has broadcast 20 distinct callsigns, including CCA427, CCA4171, CCA428, CCA4173, CCA4172.