Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7815C3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-305H · AIRBUS A-321neo

Hex
7815C3
Octal
36012703
Decimal
7,869,891
Country
CN
Tail
B-305H
Type
A21N
No current signal · last broadcast 8d ago
Flights observed
66
Distinct callsigns
20
Country
CN
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S 7815C3.

Country allocation

The ICAO 24-bit address 7815C3 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
CCA4336 - 7 2026-07-13
CCA4326 Air China 6 2026-07-25
CCA4338 - 5 2026-06-27
CCA4324 - 4 2026-07-11
CCA4312 - 4 2026-07-10
CCA4110 - 3 2026-06-28
CCA4035 - 3 2026-07-06
CCA4182 Air China 2 2026-07-02
CCA4181 - 2 2026-07-15
CCA4118 Air China 2 2026-07-25
CCA4116 - 2 2026-07-16
CCA4114 - 2 2026-07-05
CCA4102 Air China 2 2026-05-29
CCA4036 Air China 2 2026-06-26
CCA4337 Air China 1 2026-05-26
CCA4335 - 1 2026-07-13
CCA4332 - 1 2026-07-18
CCA4325 - 1 2026-06-21
CCA4323 Air China 1 2026-05-21
CCA4311 - 1 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CCA4118 PEK → CTU Jul 25, 14:10 UTCJul 26, 05:20 UTC15h 10m
2026-07-25 CCA4326 SZX → CTU Jul 25, 05:00 UTCJul 25, 05:10 UTC10m
2026-07-24 CCA4106 PEK → CTU Jul 24, 13:00 UTCJul 24, 13:30 UTC30m
2026-07-24 CCA4105 CTU → PEK Jul 24, 09:45 UTCJul 24, 10:20 UTC35m
2026-07-21 CCA4068 ZUH → CTU Jul 21, 12:35 UTCJul 21, 12:45 UTC10m
2026-07-19 CCA4104 PEK → CTU Jul 19, 11:05 UTCJul 19, 11:20 UTC15m
2026-07-19 CCA4103 - Jul 19, 08:45 UTCJul 19, 08:55 UTC10m
2026-07-18 CCA4332 - Jul 18, 06:10 UTCJul 18, 14:05 UTC7h 55m
2026-07-17 CCA4112 - Jul 17, 06:20 UTCJul 17, 06:35 UTC15m
2026-07-17 CCA4111 CTU → PEK Jul 17, 03:50 UTCJul 17, 03:59 UTC10m
2026-07-16 CCA4116 - Jul 16, 07:25 UTCJul 16, 07:45 UTC20m
2026-07-15 CCA1825 - Jul 15, 23:30 UTCJul 15, 23:40 UTC10m
2026-07-15 CCA4181 - Jul 15, 12:40 UTCJul 15, 12:55 UTC15m
2026-07-13 CCA4336 - Jul 13, 13:45 UTCJul 13, 13:55 UTC10m
2026-07-13 CCA4335 - Jul 13, 11:35 UTCJul 13, 12:00 UTC25m
2026-07-13 CCA4236 - Jul 13, 05:35 UTCJul 13, 05:45 UTC10m
2026-07-11 CCA4324 - Jul 11, 12:45 UTCJul 11, 13:05 UTC20m
2026-07-10 CCA4312 - Jul 10, 11:05 UTCJul 10, 11:15 UTC10m
2026-07-09 CCA4336 - Jul 9, 14:50 UTCJul 9, 15:00 UTC10m
2026-07-07 CCA1738 - Jul 7, 13:25 UTCJul 7, 13:35 UTC10m
2026-07-06 CCA4035 - Jul 6, 02:10 UTCJul 6, 06:40 UTC4h 30m
2026-07-05 CCA4114 - Jul 5, 04:20 UTCJul 6, 02:20 UTC22h 0m
2026-07-03 CCA4116 - Jul 3, 07:25 UTCJul 3, 07:50 UTC25m
2026-07-02 CCA4182 PEK → CTU Jul 2, 23:10 UTCJul 2, 23:35 UTC25m
2026-06-30 CCA4326 - Jun 30, 05:05 UTCJun 30, 05:15 UTC10m
2026-06-28 CCA4110 - Jun 28, 11:59 UTCJun 28, 12:15 UTC15m
2026-06-28 CCA4109 - Jun 28, 09:10 UTCJun 28, 09:30 UTC20m
2026-06-27 CCA4110 - Jun 27, 11:55 UTCJun 27, 12:09 UTC15m
2026-06-27 CCA4338 - Jun 27, 03:20 UTCJun 27, 03:34 UTC15m
2026-06-26 CCA4036 SYX → CTU Jun 26, 05:19 UTCJun 26, 05:44 UTC25m
2026-06-25 CCA4035 CTU → SYX Jun 25, 07:09 UTCJun 26, 02:30 UTC19h 20m
2026-06-24 CCA4182 PEK → CTU Jun 24, 23:14 UTCJun 24, 23:34 UTC20m
2026-06-24 CCA4181 - Jun 24, 12:20 UTCJun 24, 12:34 UTC15m
2026-06-22 CCA4118 - Jun 22, 14:24 UTCJun 22, 14:49 UTC25m
2026-06-22 CCA4326 - Jun 22, 05:20 UTCJun 22, 05:29 UTC10m
2026-06-21 CCA4324 - Jun 21, 12:44 UTCJun 21, 13:00 UTC15m
2026-06-21 - - Jun 21, 10:34 UTCJun 21, 10:44 UTC10m
2026-06-21 CCA4326 - Jun 21, 05:10 UTCJun 21, 05:25 UTC15m
2026-06-21 CCA4325 - Jun 21, 02:55 UTCJun 21, 03:05 UTC10m
2026-06-20 CCA4336 - Jun 20, 13:39 UTCJun 20, 13:49 UTC10m
2026-06-15 CCA4312 - Jun 15, 16:24 UTCJun 16, 07:45 UTC15h 20m
2026-06-15 CCA4311 - Jun 15, 14:30 UTCJun 15, 14:40 UTC10m
2026-06-11 CCA4312 SZX → CTU Jun 11, 11:10 UTCJun 11, 11:25 UTC15m
2026-06-11 - - Jun 11, 09:00 UTCJun 11, 09:10 UTC10m
2026-06-09 CCA4114 PEK → CTU Jun 9, 04:05 UTCJun 9, 04:30 UTC25m
2026-06-04 CCA4326 SZX → CTU Jun 4, 05:05 UTCJun 4, 05:15 UTC10m
2026-06-03 CCA4297 CTU → HAK Jun 3, 04:15 UTCJun 3, 04:25 UTC10m
2026-05-31 CCA4324 SZX → CTU May 31, 12:40 UTCMay 31, 12:50 UTC10m
2026-05-29 CCA4102 PEK → CTU May 29, 05:25 UTCMay 29, 05:50 UTC25m
2026-05-28 CCA4036 SYX → CTU May 28, 15:20 UTCMay 28, 15:40 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-305H page for operator, model, and routing details .

Mode-S 7815C3 frequently asked

What is Mode-S code 7815C3?
7815C3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-305H.
Where is Mode-S 7815C3 registered?
Mode-S code 7815C3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7815C3 broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7815C3, octal 36012703, decimal 7,869,891.
What flights does 7815C3 operate?
Mode-S 7815C3 has broadcast 20 distinct callsigns, including CCA4336, CCA4326, CCA4338, CCA4324, CCA4312.