Apparatus

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sensors Mode-S transponder

7815A2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-302T · AIRBUS A-321neo

Hex
7815A2
Octal
36012642
Decimal
7,869,858
Country
CN
Tail
B-302T
Type
A21N
No current signal · last broadcast 15h ago
Flights observed
93
Distinct callsigns
17
Country
CN
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 7815A2.

Country allocation

The ICAO 24-bit address 7815A2 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 17 distinct

Callsign Airline Flights Last seen
CSC3993 - 18 2026-06-30
CSC3909 - 15 2026-07-06
CSC3995 - 11 2026-07-05
CSC3994 - 11 2026-06-30
CSC8764 - 8 2026-07-17
CSC3910 - 8 2026-07-06
CSC3996 - 7 2026-07-05
CSC6788 - 3 2026-07-11
CSC8894 - 2 2026-07-12
CSC8702 Sichuan Airlines 2 2026-06-04
CSC6872 - 2 2026-07-03
CSC3960 Sichuan Airlines 1 2026-05-01
CSC3959 Sichuan Airlines 1 2026-05-01
CSC3938 - 1 2026-07-02
CSC3937 Sichuan Airlines 1 2026-06-22
CSC3122 Sichuan Airlines 1 2026-05-07
CSC3121 Sichuan Airlines 1 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSC8764 - Jul 17, 14:10 UTCJul 17, 14:20 UTC10m
2026-07-15 CSC8764 - Jul 15, 17:20 UTCJul 15, 17:35 UTC15m
2026-07-14 CSC8764 - Jul 14, 13:50 UTCJul 14, 14:00 UTC10m
2026-07-12 CSC8894 - Jul 12, 04:05 UTCJul 12, 04:25 UTC20m
2026-07-11 CSC6788 - Jul 11, 04:30 UTCJul 11, 04:45 UTC15m
2026-07-06 CSC3910 - Jul 6, 09:10 UTCJul 6, 12:25 UTC3h 15m
2026-07-06 CSC3909 - Jul 6, 05:05 UTCJul 6, 07:40 UTC2h 35m
2026-07-05 CSC3909 - Jul 5, 09:15 UTCJul 6, 07:40 UTC22h 25m
2026-07-05 CSC3996 - Jul 5, 08:05 UTCJul 5, 08:20 UTC15m
2026-07-05 CSC3995 - Jul 5, 05:35 UTCJul 5, 06:00 UTC25m
2026-07-05 CSC3995 - Jul 5, 03:05 UTCJul 5, 04:40 UTC1h 35m
2026-07-03 CSC6872 - Jul 3, 15:20 UTCJul 3, 15:45 UTC25m
2026-07-03 CSC8894 - Jul 3, 04:20 UTCJul 3, 04:40 UTC20m
2026-07-02 CSC3938 - Jul 2, 18:30 UTCJul 2, 18:55 UTC25m
2026-07-02 CSC3996 - Jul 2, 07:30 UTCJul 2, 16:50 UTC9h 20m
2026-07-02 CSC3995 - Jul 2, 05:35 UTCJul 2, 05:55 UTC20m
2026-07-01 CSC3995 - Jul 1, 11:00 UTCJul 2, 04:45 UTC17h 45m
2026-07-01 CSC3910 - Jul 1, 09:15 UTCJul 2, 04:45 UTC19h 30m
2026-06-30 CSC3994 - Jun 30, 16:25 UTCJul 1, 07:05 UTC14h 40m
2026-06-30 CSC3993 - Jun 30, 14:15 UTCJun 30, 14:40 UTC25m
2026-06-29 CSC3993 - Jun 29, 18:44 UTCJun 30, 13:20 UTC18h 36m
2026-06-29 CSC3994 - Jun 29, 16:25 UTCJun 30, 13:20 UTC20h 56m
2026-06-29 CSC3993 - Jun 29, 14:19 UTCJun 29, 14:39 UTC20m
2026-06-28 CSC3993 - Jun 28, 19:09 UTCJun 29, 13:24 UTC18h 15m
2026-06-28 CSC3994 - Jun 28, 16:35 UTCJun 29, 13:24 UTC20h 50m
2026-06-28 CSC3993 - Jun 28, 14:19 UTCJun 28, 14:39 UTC20m
2026-06-27 CSC3993 - Jun 27, 19:00 UTCJun 28, 13:19 UTC18h 20m
2026-06-27 CSC3994 - Jun 27, 16:35 UTCJun 28, 13:19 UTC20h 45m
2026-06-27 CSC3994 - Jun 27, 16:24 UTCJun 28, 13:19 UTC20h 55m
2026-06-27 CSC3993 - Jun 27, 14:20 UTCJun 27, 14:39 UTC20m
2026-06-27 CSC3993 - Jun 27, 11:50 UTCJun 27, 13:24 UTC1h 35m
2026-06-25 CSC3994 - Jun 25, 16:35 UTCJun 25, 18:24 UTC1h 50m
2026-06-25 CSC3993 - Jun 25, 14:20 UTCJun 25, 14:39 UTC20m
2026-06-25 CSC3993 - Jun 25, 12:40 UTCJun 25, 13:24 UTC45m
2026-06-24 CSC3910 - Jun 24, 09:09 UTCJun 24, 11:14 UTC2h 5m
2026-06-23 CSC3909 - Jun 23, 10:35 UTCJun 24, 07:05 UTC20h 30m
2026-06-23 CSC3909 - Jun 23, 09:14 UTCJun 24, 07:05 UTC21h 50m
2026-06-22 CSC3909 - Jun 22, 18:24 UTCJun 23, 06:55 UTC12h 30m
2026-06-22 CSC3937 TFU → BKK Jun 22, 16:14 UTCJun 22, 17:10 UTC55m
2026-06-20 CSC6872 - Jun 20, 12:24 UTCJun 20, 12:45 UTC20m
2026-06-04 CSC8702 SZX → CTU Jun 4, 02:30 UTCJun 4, 02:45 UTC15m
2026-06-01 CSC8764 ZUH → CTU Jun 1, 13:35 UTCJun 1, 13:45 UTC10m
2026-05-23 CSC8702 SZX → CTU May 23, 02:25 UTCMay 23, 02:35 UTC9m
2026-05-19 CSC8764 ZUH → CTU May 19, 13:50 UTCMay 19, 14:00 UTC10m
2026-05-16 CSC8764 ZUH → CTU May 16, 13:46 UTCMay 16, 14:01 UTC15m
2026-05-13 CSC8764 ZUH → CTU May 13, 13:45 UTCMay 13, 14:00 UTC15m
2026-05-09 CSC8764 ZUH → CTU May 9, 13:45 UTCMay 9, 13:55 UTC10m
2026-05-07 CSC3121 PEK → URC May 7, 13:05 UTCMay 7, 13:30 UTC25m
2026-05-07 CSC3122 URC → PEK May 7, 11:00 UTCMay 7, 11:20 UTC20m
2026-05-06 CSC3910 SIN → TFU May 6, 09:35 UTCMay 6, 11:55 UTC2h 20m

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-302T page for operator, model, and routing details .

Mode-S 7815A2 frequently asked

What is Mode-S code 7815A2?
7815A2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-302T.
Where is Mode-S 7815A2 registered?
Mode-S code 7815A2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7815A2 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7815A2, octal 36012642, decimal 7,869,858.
What flights does 7815A2 operate?
Mode-S 7815A2 has broadcast 17 distinct callsigns, including CSC3993, CSC3909, CSC3995, CSC3994, CSC8764.