Apparatus

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sensors Mode-S transponder

7815E8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-305T · AIRBUS A-321

Hex
7815E8
Octal
36012750
Decimal
7,869,928
Country
CN
Tail
B-305T
Type
A321
No current signal · last broadcast 3d ago
Flights observed
81
Distinct callsigns
20
Country
CN
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 7815E8.

Country allocation

The ICAO 24-bit address 7815E8 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
CSC3931 Sichuan Airlines 11 2026-05-17
CSC8704 - 7 2026-06-23
CSC3932 Sichuan Airlines 7 2026-05-16
CSC8710 - 6 2026-06-24
CSC8834 Sichuan Airlines 5 2026-05-05
CSC8832 Sichuan Airlines 5 2026-05-08
CSC8830 Sichuan Airlines 5 2026-05-08
CSC8706 Sichuan Airlines 4 2026-07-21
CSC3935 - 4 2026-06-29
CSC8778 - 3 2026-07-08
CSC8709 Sichuan Airlines 3 2026-06-07
CSC8833 Sichuan Airlines 2 2026-05-05
CSC8831 Sichuan Airlines 2 2026-05-08
CSC8777 - 2 2026-07-08
CSC8703 - 2 2026-06-21
CSC8894 Sichuan Airlines 1 2026-05-19
CSC8786 Sichuan Airlines 1 2026-05-07
CSC8785 Sichuan Airlines 1 2026-05-07
CSC8708 Sichuan Airlines 1 2026-05-29
CSC8705 - 1 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 CSC8706 SZX → CTU Jul 21, 10:05 UTCJul 21, 10:20 UTC15m
2026-07-18 CSC8706 - Jul 18, 08:55 UTCJul 18, 09:10 UTC15m
2026-07-16 CSC8706 - Jul 16, 10:04 UTCJul 16, 10:15 UTC10m
2026-07-08 CSC8778 - Jul 8, 13:30 UTCJul 8, 13:45 UTC15m
2026-07-08 CSC8777 - Jul 8, 11:10 UTCJul 8, 11:20 UTC10m
2026-07-05 CSC8706 - Jul 5, 11:50 UTCJul 5, 12:00 UTC10m
2026-07-05 CSC8705 - Jul 5, 10:05 UTCJul 5, 10:15 UTC10m
2026-07-03 CSC6788 - Jul 3, 05:35 UTCJul 3, 05:50 UTC15m
2026-07-01 CSC6461 - Jul 1, 08:10 UTCJul 1, 08:20 UTC10m
2026-06-30 - - Jun 30, 07:45 UTCJun 30, 07:55 UTC10m
2026-06-29 CSC3936 - Jun 29, 11:20 UTCJun 29, 12:39 UTC1h 20m
2026-06-29 CSC3935 - Jun 29, 08:09 UTCJun 29, 09:44 UTC1h 35m
2026-06-28 CSC3935 - Jun 28, 12:05 UTCJun 29, 09:44 UTC21h 40m
2026-06-28 CSC3935 BKK → BKK Jun 28, 11:59 UTCJun 29, 09:44 UTC21h 45m
2026-06-28 CSC3935 - Jun 28, 08:09 UTCJun 28, 09:30 UTC1h 20m
2026-06-24 CSC8710 - Jun 24, 00:40 UTCJun 24, 00:49 UTC10m
2026-06-23 CSC8704 - Jun 23, 07:49 UTCJun 23, 08:04 UTC15m
2026-06-23 CSC8710 - Jun 23, 00:30 UTCJun 23, 00:45 UTC15m
2026-06-21 CSC6796 - Jun 21, 23:14 UTCJun 21, 23:30 UTC15m
2026-06-21 CSC8704 - Jun 21, 07:45 UTCJun 21, 07:59 UTC15m
2026-06-21 CSC8703 - Jun 21, 06:19 UTCJun 21, 06:29 UTC10m
2026-06-18 CSC8778 HAK → CTU Jun 18, 13:05 UTCJun 18, 13:20 UTC15m
2026-06-17 CSC8778 HAK → CTU Jun 17, 13:20 UTCJun 18, 10:30 UTC21h 10m
2026-06-17 CSC8777 CTU → HAK Jun 17, 11:00 UTCJun 17, 11:15 UTC15m
2026-06-08 CSC8710 SZX → CTU Jun 8, 00:25 UTCJun 8, 00:35 UTC10m
2026-06-07 CSC8709 CTU → SZX Jun 7, 16:05 UTCJun 7, 16:15 UTC10m
2026-06-07 CSC8704 SZX → CTU Jun 7, 10:25 UTCJun 7, 10:40 UTC15m
2026-06-07 CSC8703 CTU → SZX Jun 7, 08:00 UTCJun 7, 08:10 UTC10m
2026-06-07 CSC8710 SZX → CTU Jun 7, 00:19 UTCJun 7, 00:30 UTC10m
2026-06-06 CSC8709 CTU → SZX Jun 6, 16:20 UTCJun 6, 16:30 UTC10m
2026-05-29 CSC8708 SZX → CTU May 29, 12:15 UTCMay 29, 12:45 UTC30m
2026-05-28 CSC8704 SZX → CTU May 28, 07:45 UTCMay 28, 07:55 UTC10m
2026-05-28 CSC8710 SZX → CTU May 28, 00:25 UTCMay 28, 00:35 UTC10m
2026-05-24 CSC8709 CTU → SZX May 24, 13:10 UTCMay 24, 13:25 UTC15m
2026-05-24 CSC8704 SZX → CTU May 24, 07:40 UTCMay 24, 07:50 UTC10m
2026-05-23 CSC8704 SZX → CTU May 23, 09:45 UTCMay 23, 10:00 UTC15m
2026-05-23 CSC8710 SZX → CTU May 23, 00:30 UTCMay 23, 00:40 UTC10m
2026-05-22 CSC8704 SZX → CTU May 22, 07:45 UTCMay 22, 08:05 UTC20m
2026-05-19 CSC8894 PEK → CTU May 19, 03:55 UTCMay 19, 04:15 UTC20m
2026-05-17 CSC393A - May 17, 13:20 UTCMay 18, 05:10 UTC15h 50m
2026-05-17 CSC3931 TFU → HKT May 17, 09:15 UTCMay 17, 12:05 UTC2h 50m
2026-05-16 CSC3931 TFU → HKT May 16, 12:35 UTCMay 17, 12:01 UTC23h 25m
2026-05-16 CSC3932 HKT → TFU May 16, 10:05 UTCMay 17, 10:00 UTC23h 55m
2026-05-16 CSC3931 TFU → HKT May 16, 09:06 UTCMay 16, 13:55 UTC4h 50m
2026-05-15 CSC3931 TFU → HKT May 15, 12:40 UTCMay 16, 10:20 UTC21h 40m
2026-05-15 CSC3931 TFU → HKT May 15, 10:05 UTCMay 16, 10:01 UTC23h 55m
2026-05-15 CSC3931 TFU → HKT May 15, 09:05 UTCMay 15, 13:55 UTC4h 50m
2026-05-14 CSC3932 HKT → TFU May 14, 12:35 UTCMay 15, 10:15 UTC21h 40m
2026-05-14 CSC3932 HKT → TFU May 14, 10:05 UTCMay 15, 10:00 UTC23h 55m
2026-05-14 CSC3932 HKT → TFU May 14, 09:05 UTCMay 14, 13:55 UTC4h 50m

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

Mode-S 7815E8 frequently asked

What is Mode-S code 7815E8?
7815E8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-305T.
Where is Mode-S 7815E8 registered?
Mode-S code 7815E8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7815E8 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 7815E8, octal 36012750, decimal 7,869,928.
What flights does 7815E8 operate?
Mode-S 7815E8 has broadcast 20 distinct callsigns, including CSC3931, CSC8704, CSC3932, CSC8710, CSC8834.