Apparatus

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sensors Mode-S transponder

7815C1

ICAO 24-bit transponder address · allocated to China

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

Hex
7815C1
Octal
36012701
Decimal
7,869,889
Country
CN
Tail
B-305F
Type
A21N
No current signal · last broadcast 6h ago
Flights observed
50
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7815C1.

Country allocation

The ICAO 24-bit address 7815C1 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
CCA1377 Air China 3 2026-05-09
CCA1353 Air China 3 2026-06-11
CCA1647 Air China 2 2026-05-26
CCA1369 Air China 2 2026-05-28
CCA1311 Air China 2 2026-06-05
CCA1131 Air China 2 2026-06-11
CCA4336 Air China 1 2026-04-25
CCA4313 Air China 1 2026-04-20
CCA4184 Air China 1 2026-04-20
CCA4182 Air China 1 2026-04-29
CCA4108 Air China 1 2026-04-28
CCA4102 Air China 1 2026-04-25
CCA1906 Air China 1 2026-05-14
CCA1813 Air China 1 2026-05-02
CCA1718 Air China 1 2026-06-12
CCA1704 Air China 1 2026-05-17
CCA1635 Air China 1 2026-05-07
CCA1461 Air China 1 2026-05-04
CCA1415 Air China 1 2026-05-01
CCA1407 Air China 1 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 CCA1718 PEK → HGH Jun 12, 07:20 UTCJun 12, 07:30 UTC10m
2026-06-11 CCA1131 PEK → HLD Jun 11, 23:55 UTCJun 12, 00:10 UTC15m
2026-06-11 CCA1353 PEK → SYX Jun 11, 06:30 UTCJun 11, 12:45 UTC6h 15m
2026-06-10 CCA1131 PEK → HLD Jun 10, 23:55 UTCJun 11, 00:10 UTC15m
2026-06-10 CCA1254 URC → PEK Jun 10, 11:25 UTCJun 10, 11:45 UTC20m
2026-06-10 CCA1253 PEK → URC Jun 10, 02:55 UTCJun 10, 03:05 UTC10m
2026-06-09 CCA1293 PEK → URC Jun 9, 08:20 UTCJun 9, 08:45 UTC25m
2026-06-08 CCA1407 PEK → CTU Jun 8, 09:05 UTCJun 8, 09:30 UTC25m
2026-06-07 CCA1292 URC → PEK Jun 7, 16:10 UTCJun 7, 16:25 UTC15m
2026-06-07 CCA1291 PEK → URC Jun 7, 07:55 UTCJun 7, 08:15 UTC20m
2026-06-06 CCA1405 PEK → CTU Jun 6, 23:44 UTCJun 7, 00:10 UTC25m
2026-06-06 CCA1353 PEK → SYX Jun 6, 06:45 UTCJun 6, 12:35 UTC5h 50m
2026-06-05 CCA1343 PEK → CSX Jun 5, 22:55 UTCJun 5, 23:15 UTC20m
2026-06-05 CCA1311 PEK → NNG Jun 5, 01:30 UTCJun 5, 01:55 UTC25m
2026-06-02 CCA1294 URC → PEK Jun 2, 15:15 UTCJun 2, 15:35 UTC20m
2026-05-31 CCA1251 PEK → URC May 31, 00:00 UTCMay 31, 00:15 UTC15m
2026-05-28 CCA1369 PEK → SYX May 28, 23:35 UTCMay 29, 00:00 UTC25m
2026-05-28 CCA1129 PEK → HLD May 28, 10:25 UTCMay 28, 10:40 UTC15m
2026-05-28 CCA1210 XIY → PEK May 28, 06:35 UTCMay 28, 07:05 UTC30m
2026-05-28 CCA1209 PEK → XIY May 28, 02:25 UTCMay 28, 02:40 UTC15m
2026-05-26 CCA1647 PEK → CGQ May 26, 11:39 UTCMay 26, 11:50 UTC10m
2026-05-26 CCA1311 PEK → NNG May 26, 01:44 UTCMay 26, 02:10 UTC25m
2026-05-17 CCA1704 PEK → HGH May 17, 23:50 UTCMay 18, 00:00 UTC10m
2026-05-17 CCA1139 PEK → YCU May 17, 10:30 UTCMay 17, 10:50 UTC20m
2026-05-14 CCA1906 ZUH → PEK May 14, 06:20 UTCMay 14, 06:40 UTC20m
2026-05-09 CCA1377 PEK → SYX May 9, 07:30 UTCMay 9, 07:50 UTC20m
2026-05-08 CCA1390 CSX → PEK May 8, 06:14 UTCMay 8, 06:25 UTC10m
2026-05-08 CCA1389 PEK → CSX May 8, 00:34 UTCMay 8, 00:54 UTC20m
2026-05-07 CCA1635 PEK → SHE May 7, 11:00 UTCMay 7, 11:10 UTC10m
2026-05-06 CCA1369 PEK → SYX May 6, 23:45 UTCMay 7, 00:10 UTC25m
2026-05-06 CCA1377 PEK → SYX May 6, 07:35 UTCMay 6, 08:01 UTC25m
2026-05-06 CCA1238 HMI → PEK May 6, 05:00 UTCMay 6, 05:20 UTC19m
2026-05-05 CCA1237 PEK → HMI May 5, 22:20 UTCMay 5, 22:40 UTC20m
2026-05-05 CCA1345 PEK → SYX May 5, 08:45 UTCMay 5, 08:55 UTC10m
2026-05-04 CCA1461 PEK → KWE May 4, 23:25 UTCMay 4, 23:45 UTC20m
2026-05-04 CCA1354 SYX → PEK May 4, 15:10 UTCMay 4, 15:20 UTC10m
2026-05-04 CCA1353 PEK → SYX May 4, 06:35 UTCMay 4, 06:45 UTC10m
2026-05-03 CCA1236 XIY → PEK May 3, 14:20 UTCMay 3, 14:40 UTC20m
2026-05-03 CCA1235 PEK → XIY May 3, 09:30 UTCMay 3, 09:50 UTC20m
2026-05-02 CCA1813 PEK → HFE May 2, 00:05 UTCMay 2, 00:15 UTC10m
2026-05-01 CCA1415 PEK → CTU May 1, 01:45 UTCMay 1, 02:10 UTC25m
2026-04-30 CCA1377 PEK → SYX Apr 30, 08:10 UTCApr 30, 08:25 UTC15m
2026-04-30 CCA1406 CTU → PEK Apr 30, 06:10 UTCApr 30, 06:20 UTC10m
2026-04-29 CCA4182 PEK → CTU Apr 29, 23:20 UTCApr 29, 23:40 UTC20m
2026-04-29 CCA1647 PEK → CGQ Apr 29, 13:30 UTCApr 29, 13:40 UTC10m
2026-04-28 CCA4108 PEK → CTU Apr 28, 06:40 UTCApr 28, 07:00 UTC20m
2026-04-25 CCA4336 SZX → CTU Apr 25, 13:40 UTCApr 25, 13:55 UTC15m
2026-04-25 CCA4102 PEK → CTU Apr 25, 05:40 UTCApr 25, 05:55 UTC15m
2026-04-20 CCA4313 CTU → SZX Apr 20, 08:10 UTCApr 20, 08:25 UTC15m
2026-04-20 CCA4184 PEK → CTU Apr 20, 01:20 UTCApr 20, 01:45 UTC25m

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-305F page for operator, model, and routing details .

Mode-S 7815C1 frequently asked

What is Mode-S code 7815C1?
7815C1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-305F.
Where is Mode-S 7815C1 registered?
Mode-S code 7815C1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7815C1 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7815C1, octal 36012701, decimal 7,869,889.
What flights does 7815C1 operate?
Mode-S 7815C1 has broadcast 20 distinct callsigns, including CCA1377, CCA1353, CCA1647, CCA1369, CCA1311.