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 Jul 26, 20:50 UTC
Flights observed
131
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 20:50 UTC

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
CSN308 - 9 2026-07-19
CSN8003 - 8 2026-07-12
CSN307 China Southern Airlines 7 2026-07-18
CSN8004 - 6 2026-07-12
CSN382 China Southern Airlines 6 2026-04-20
CSN306 China Southern Airlines 6 2026-07-26
CSN381 China Southern Airlines 4 2026-04-19
CSN8028 China Southern Airlines 3 2026-07-23
CSN690 - 3 2026-07-16
CSN305 China Southern Airlines 3 2026-07-25
CSN8049 - 2 2026-07-14
CSN8027 China Southern Airlines 2 2026-07-23
CSN689 - 2 2026-07-15
CSN354 China Southern Airlines 2 2026-07-21
CSN3255 China Southern Airlines 2 2026-05-05
CSN322 China Southern Airlines 2 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN306 AKL → CAN Jul 26, 20:40 UTCJul 26, 20:50 UTC10m
2026-07-26 CSN306 AKL → CAN Jul 26, 09:35 UTCJul 26, 19:40 UTC10h 5m
2026-07-25 CSN305 CAN → AKL Jul 25, 20:00 UTCJul 26, 04:50 UTC8h 50m
2026-07-23 CSN8028 SVO → CAN Jul 23, 15:35 UTCJul 24, 10:10 UTC18h 35m
2026-07-23 CSN8028 SVO → CAN Jul 23, 14:40 UTCJul 24, 10:10 UTC19h 30m
2026-07-23 CSN8027 CAN → SVO Jul 23, 06:05 UTCJul 23, 11:40 UTC5h 35m
2026-07-22 CSN306 AKL → CAN Jul 22, 19:50 UTCJul 22, 20:05 UTC15m
2026-07-22 CSN306 AKL → CAN Jul 22, 12:00 UTCJul 22, 19:05 UTC7h 5m
2026-07-21 CSN305 CAN → AKL Jul 21, 17:15 UTCJul 22, 03:45 UTC10h 30m
2026-07-21 CSN354 SIN → CAN Jul 21, 08:55 UTCJul 21, 09:10 UTC15m
2026-07-21 CSN354 SIN → CAN Jul 21, 05:55 UTCJul 21, 06:20 UTC25m
2026-07-21 CSN353 CAN → SIN Jul 21, 01:05 UTCJul 21, 04:05 UTC3h 0m
2026-07-20 CSN8028 - Jul 20, 13:30 UTCJul 20, 17:00 UTC3h 30m
2026-07-20 CSN8027 CAN → SVO Jul 20, 09:55 UTCJul 20, 10:25 UTC30m
2026-07-19 CSN308 - Jul 19, 13:35 UTCJul 20, 09:20 UTC19h 45m
2026-07-19 CSN308 - Jul 19, 11:50 UTCJul 20, 09:20 UTC21h 30m
2026-07-18 CSN307 CAN → AMS Jul 18, 14:55 UTCJul 19, 06:00 UTC15h 5m
2026-07-17 CSN304 LHR → CAN Jul 17, 21:30 UTCJul 18, 03:45 UTC6h 16m
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

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 Jul 26, 20:50 UTC.
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, CSN308.