Apparatus

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sensors Mode-S transponder

7816C6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-308T · AIRBUS A-350-900

Hex
7816C6
Octal
36013306
Decimal
7,870,150
Country
CN
Tail
B-308T
Type
A359
No current signal · last broadcast 1h ago
Flights observed
114
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 7816C6.

Country allocation

The ICAO 24-bit address 7816C6 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
CSN326 - 19 2026-07-10
CSN8031 China Southern Airlines 13 2026-05-02
CSN8044 China Southern Airlines 12 2026-05-03
CSN325 - 10 2026-07-09
CSN8003 - 8 2026-07-12
CSN308 - 7 2026-07-08
CSN8004 - 6 2026-07-12
CSN382 China Southern Airlines 6 2026-04-20
CSN307 - 6 2026-07-07
CSN381 China Southern Airlines 4 2026-04-19
CSN690 - 3 2026-07-16
CSN8049 - 2 2026-07-14
CSN689 - 2 2026-07-15
CSN3255 China Southern Airlines 2 2026-05-05
CSN322 China Southern Airlines 2 2026-05-11
CSN306 - 2 2026-07-11
CSN303 - 2 2026-07-17
CSN8050 - 1 2026-07-14
CSN3456 China Southern Airlines 1 2026-05-04
CSN3455 China Southern Airlines 1 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSN304 LHR → CAN Jul 17, 21:30 UTCJul 18, 01:10 UTC3h 40m
2026-07-17 CSN303 - Jul 17, 11:00 UTCJul 17, 17:50 UTC6h 50m
2026-07-16 CSN303 - Jul 16, 16:44 UTCJul 17, 15:29 UTC22h 45m
2026-07-16 CSN690 - Jul 16, 13:34 UTCJul 17, 11:45 UTC22h 10m
2026-07-16 CSN690 - Jul 16, 11:34 UTCJul 17, 11:30 UTC23h 55m
2026-07-16 CSN690 - Jul 16, 10:50 UTCJul 16, 17:25 UTC6h 35m
2026-07-15 CSN689 - Jul 15, 22:20 UTCJul 16, 05:15 UTC6h 55m
2026-07-14 CSN689 - Jul 14, 23:35 UTCJul 15, 23:05 UTC23h 30m
2026-07-14 CSN8050 - Jul 14, 17:10 UTCJul 14, 23:50 UTC6h 39m
2026-07-14 CSN8049 - Jul 14, 06:45 UTCJul 14, 13:35 UTC6h 50m
2026-07-13 CSN8049 - Jul 13, 11:25 UTCJul 14, 07:35 UTC20h 10m
2026-07-12 CSN8004 - Jul 12, 20:25 UTCJul 13, 11:25 UTC15h 0m
2026-07-12 CSN8004 - Jul 12, 18:35 UTCJul 12, 18:50 UTC15m
2026-07-12 CSN8003 - Jul 12, 11:15 UTCJul 12, 15:55 UTC4h 40m
2026-07-11 CSN306 - Jul 11, 12:45 UTCJul 11, 21:10 UTC8h 25m
2026-07-11 CSN306 - Jul 11, 09:55 UTCJul 11, 10:05 UTC10m
2026-07-10 CSN305 - Jul 10, 17:30 UTCJul 11, 03:25 UTC9h 55m
2026-07-10 CSN326 - Jul 10, 09:05 UTCJul 10, 09:30 UTC25m
2026-07-10 CSN326 - Jul 10, 00:20 UTCJul 10, 08:10 UTC7h 50m
2026-07-09 CSN325 - Jul 9, 13:55 UTCJul 9, 22:20 UTC8h 25m
2026-07-08 CSN308 - Jul 8, 11:45 UTCJul 8, 17:50 UTC6h 5m
2026-07-07 CSN307 - Jul 7, 21:20 UTCJul 8, 03:50 UTC6h 30m
2026-07-07 CSN326 - Jul 7, 08:55 UTCJul 7, 09:10 UTC15m
2026-07-07 CSN326 - Jul 7, 00:25 UTCJul 7, 08:05 UTC7h 40m
2026-07-06 CSN325 - Jul 6, 13:55 UTCJul 6, 22:20 UTC8h 25m
2026-07-05 CSN8004 - Jul 5, 18:30 UTCJul 5, 22:30 UTC4h 0m
2026-07-05 CSN8003 - Jul 5, 15:45 UTCJul 5, 16:15 UTC30m
2026-07-05 CSN8003 - Jul 5, 11:45 UTCJul 5, 15:10 UTC3h 25m
2026-06-05 CSN326 SYD → CAN Jun 5, 00:20 UTCJun 5, 09:00 UTC8h 40m
2026-06-04 CSN325 CAN → SYD Jun 4, 13:20 UTCJun 4, 21:55 UTC8h 35m
2026-06-04 CSN326 SYD → CAN Jun 4, 09:00 UTCJun 4, 09:20 UTC20m
2026-06-04 CSN326 SYD → CAN Jun 4, 00:20 UTCJun 4, 08:00 UTC7h 40m
2026-06-03 CSN325 CAN → SYD Jun 3, 13:35 UTCJun 3, 22:00 UTC8h 25m
2026-06-02 CSN8004 SVO → WUH Jun 2, 18:55 UTCJun 2, 22:45 UTC3h 50m
2026-06-02 CSN8003 WUH → SVO Jun 2, 11:30 UTCJun 2, 15:45 UTC4h 15m
2026-05-31 CSN308 AMS → CAN May 31, 11:45 UTCMay 31, 17:45 UTC6h 0m
2026-05-30 CSN307 CAN → AMS May 30, 21:45 UTCMay 31, 01:11 UTC3h 26m
2026-05-30 CSN326 SYD → CAN May 30, 09:25 UTCMay 30, 09:50 UTC25m
2026-05-30 CSN326 SYD → CAN May 30, 01:15 UTCMay 30, 08:35 UTC7h 20m
2026-05-29 CSN325 CAN → SYD May 29, 14:50 UTCMay 29, 23:20 UTC8h 30m
2026-05-29 CSN326 SYD → CAN May 29, 08:40 UTCMay 29, 09:15 UTC35m
2026-05-29 CSN326 SYD → CAN May 29, 00:25 UTCMay 29, 07:45 UTC7h 20m
2026-05-28 CSN325 CAN → SYD May 28, 13:15 UTCMay 28, 21:50 UTC8h 35m
2026-05-26 CSN8004 SVO → WUH May 26, 18:34 UTCMay 26, 22:25 UTC3h 50m
2026-05-26 CSN8003 WUH → SVO May 26, 11:20 UTCMay 26, 15:39 UTC4h 20m
2026-05-25 CSN8003 WUH → SVO May 25, 17:35 UTCMay 26, 15:39 UTC22h 5m
2026-05-25 CSN8003 WUH → SVO May 25, 17:00 UTCMay 26, 15:29 UTC22h 30m
2026-05-25 CSN308 AMS → CAN May 25, 13:35 UTCMay 26, 13:29 UTC23h 55m
2026-05-25 CSN308 AMS → CAN May 25, 12:00 UTCMay 26, 11:30 UTC23h 29m
2026-05-24 CSN307 CAN → AMS May 24, 21:30 UTCMay 25, 04:10 UTC6h 40m

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-308T page for operator, model, and routing details .

Mode-S 7816C6 frequently asked

What is Mode-S code 7816C6?
7816C6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-308T.
Where is Mode-S 7816C6 registered?
Mode-S code 7816C6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7816C6 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7816C6, octal 36013306, decimal 7,870,150.
What flights does 7816C6 operate?
Mode-S 7816C6 has broadcast 20 distinct callsigns, including CSN326, CSN8031, CSN8044, CSN325, CSN8003.