Apparatus

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sensors Mode-S transponder

781C09

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-325A · AIRBUS A-321neo

Hex
781C09
Octal
36016011
Decimal
7,871,497
Country
CN
Tail
B-325A
Type
A21N
No current signal · last broadcast 4d ago
Flights observed
61
Distinct callsigns
20
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 781C09.

Country allocation

The ICAO 24-bit address 781C09 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
CCA414 - 8 2026-07-01
CCA4116 - 8 2026-07-13
CCA4182 - 7 2026-07-12
CCA4338 Air China 4 2026-05-27
CCA4297 Air China 4 2026-06-22
CCA4337 Air China 3 2026-05-18
CCA4118 - 3 2026-07-15
CCA4312 Air China 2 2026-05-27
CCA4298 Air China 2 2026-06-22
CCA413 - 2 2026-07-05
CCA4117 - 2 2026-07-15
CCA4102 Air China 2 2026-05-30
CCA4336 Air China 1 2026-05-12
CCA4326 Air China 1 2026-04-17
CCA4325 Air China 1 2026-06-09
CCA4315 Air China 1 2026-06-12
CCA4314 - 1 2026-06-25
CCA4313 - 1 2026-06-25
CCA4184 - 1 2026-06-25
CCA4183 Air China 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 CCA4118 - Jul 15, 15:20 UTCJul 15, 15:40 UTC20m
2026-07-15 CCA4117 - Jul 15, 11:35 UTCJul 15, 11:45 UTC10m
2026-07-13 CCA4116 - Jul 13, 07:01 UTCJul 13, 07:25 UTC25m
2026-07-12 CCA4182 - Jul 12, 23:15 UTCJul 12, 23:40 UTC25m
2026-07-12 CCA4112 - Jul 12, 06:30 UTCJul 12, 06:50 UTC20m
2026-07-10 CCA4116 - Jul 10, 07:30 UTCJul 10, 07:50 UTC20m
2026-07-09 CCA4182 - Jul 9, 23:30 UTCJul 9, 23:50 UTC20m
2026-07-05 CCA413 - Jul 5, 03:10 UTCJul 5, 09:20 UTC6h 10m
2026-07-04 CCA413 - Jul 4, 10:55 UTCJul 5, 09:20 UTC22h 25m
2026-07-03 CCA2719 - Jul 3, 13:20 UTCJul 4, 10:55 UTC21h 35m
2026-07-01 CCA414 - Jul 1, 03:20 UTCJul 1, 09:20 UTC6h 0m
2026-06-29 CCA2712 - Jun 29, 10:29 UTCJun 29, 13:44 UTC3h 15m
2026-06-27 CCA414 - Jun 27, 03:49 UTCJun 27, 08:29 UTC4h 40m
2026-06-25 CCA4314 - Jun 25, 09:29 UTCJun 25, 09:40 UTC10m
2026-06-25 CCA4313 - Jun 25, 07:30 UTCJun 25, 07:39 UTC10m
2026-06-25 CCA4184 - Jun 25, 01:14 UTCJun 25, 01:35 UTC20m
2026-06-23 CCA4116 - Jun 23, 08:00 UTCJun 23, 08:20 UTC20m
2026-06-22 CCA4182 PEK → CTU Jun 22, 23:24 UTCJun 22, 23:50 UTC25m
2026-06-22 CCA4298 HAK → CTU Jun 22, 06:54 UTCJun 22, 07:10 UTC15m
2026-06-22 CCA4297 CTU → HAK Jun 22, 04:15 UTCJun 22, 04:34 UTC20m
2026-06-21 CCA4297 CTU → HAK Jun 21, 08:20 UTCJun 22, 04:34 UTC20h 15m
2026-06-21 CCA414 - Jun 21, 07:34 UTCJun 22, 04:34 UTC21h 0m
2026-06-21 CCA414 - Jun 21, 04:20 UTCJun 22, 04:15 UTC23h 55m
2026-06-21 CCA414 - Jun 21, 04:04 UTCJun 21, 08:54 UTC4h 50m
2026-06-19 CCA414 - Jun 19, 04:00 UTCJun 19, 08:50 UTC4h 50m
2026-06-16 CCA414 - Jun 16, 04:05 UTCJun 16, 08:49 UTC4h 45m
2026-06-14 CCA414 - Jun 14, 04:05 UTCJun 14, 08:25 UTC4h 20m
2026-06-12 CCA4315 CTU → HAK Jun 12, 07:55 UTCJun 12, 08:10 UTC15m
2026-06-11 CCA4116 PEK → CTU Jun 11, 07:15 UTCJun 11, 07:35 UTC20m
2026-06-10 CCA4182 PEK → CTU Jun 10, 23:25 UTCJun 10, 23:40 UTC15m
2026-06-09 CCA4325 CTU → SZX Jun 9, 03:00 UTCJun 9, 03:10 UTC10m
2026-06-08 CCA4116 PEK → CTU Jun 8, 07:20 UTCJun 8, 07:40 UTC20m
2026-06-07 CCA4182 PEK → CTU Jun 7, 23:15 UTCJun 7, 23:40 UTC25m
2026-06-03 CCA4116 PEK → CTU Jun 3, 07:05 UTCJun 3, 07:30 UTC25m
2026-06-02 CCA4182 PEK → CTU Jun 2, 23:10 UTCJun 2, 23:35 UTC25m
2026-06-02 CCA4298 HAK → CTU Jun 2, 06:45 UTCJun 2, 06:55 UTC10m
2026-06-02 CCA4297 CTU → HAK Jun 2, 04:15 UTCJun 2, 04:25 UTC10m
2026-05-30 CCA4102 PEK → CTU May 30, 05:25 UTCMay 30, 05:35 UTC10m
2026-05-29 CCA4116 PEK → CTU May 29, 07:10 UTCMay 29, 07:30 UTC20m
2026-05-28 CCA4182 PEK → CTU May 28, 23:10 UTCMay 28, 23:30 UTC20m
2026-05-28 CCA4297 CTU → HAK May 28, 04:10 UTCMay 28, 04:25 UTC15m
2026-05-27 CCA4312 SZX → CTU May 27, 11:00 UTCMay 27, 11:15 UTC15m
2026-05-27 CCA4338 SZX → CTU May 27, 03:29 UTCMay 27, 03:45 UTC15m
2026-05-18 CCA4338 SZX → CTU May 18, 03:25 UTCMay 18, 03:35 UTC10m
2026-05-18 CCA4337 CTU → SZX May 18, 01:35 UTCMay 18, 01:45 UTC10m
2026-05-15 CCA4312 SZX → CTU May 15, 15:00 UTCMay 15, 15:15 UTC15m
2026-05-12 CCA4336 SZX → CTU May 12, 13:45 UTCMay 12, 13:55 UTC10m
2026-05-03 CCA4118 PEK → CTU May 3, 14:00 UTCMay 3, 14:20 UTC20m
2026-05-01 CCA4116 PEK → CTU May 1, 07:25 UTCMay 1, 07:40 UTC15m
2026-05-01 CCA1344 CSX → PEK May 1, 04:20 UTCMay 1, 04:35 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-325A page for operator, model, and routing details .

Mode-S 781C09 frequently asked

What is Mode-S code 781C09?
781C09 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-325A.
Where is Mode-S 781C09 registered?
Mode-S code 781C09 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781C09 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781C09, octal 36016011, decimal 7,871,497.
What flights does 781C09 operate?
Mode-S 781C09 has broadcast 20 distinct callsigns, including CCA414, CCA4116, CCA4182, CCA4338, CCA4297.