Apparatus

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sensors Mode-S transponder

781796

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20D6 · BOEING 737 MAX 8

Hex
781796
Octal
36013626
Decimal
7,870,358
Country
CN
Tail
B-20D6
Type
B38M
No current signal · last broadcast Jul 26, 18:05 UTC
Flights observed
211
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 18:05 UTC

Last known position

Most recent position reported by Mode-S 781796.

Country allocation

The ICAO 24-bit address 781796 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
CSN5035 China Southern Airlines 35 2026-07-26
CSN8019 China Southern Airlines 25 2026-07-24
CSN5036 China Southern Airlines 24 2026-07-26
CSN8020 China Southern Airlines 21 2026-07-25
CSN5095 China Southern Airlines 16 2026-07-18
CSN8301 China Southern Airlines 14 2026-07-21
CSN5096 - 14 2026-07-18
CSN8302 - 13 2026-07-16
CSN3047 China Southern Airlines 12 2026-07-24
CSN3048 China Southern Airlines 8 2026-07-26
CSN8347 China Southern Airlines 6 2026-05-28
CSN8348 China Southern Airlines 4 2026-05-28
CSN3724 - 3 2026-07-10
CSN8012 - 2 2026-06-23
CSN3036 - 2 2026-07-21
CSN3035 - 2 2026-07-21
CSN8011 - 1 2026-06-23
CSN6910 China Southern Airlines 1 2026-05-25
CSN6748 China Southern Airlines 1 2026-07-07
CSN6747 - 1 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN5036 LAX → CAN Jul 26, 17:50 UTCJul 26, 18:05 UTC15m
2026-07-26 CSN5035 CAN → LAX Jul 26, 15:20 UTCJul 26, 15:50 UTC30m
2026-07-26 CSN5035 CAN → LAX Jul 26, 12:30 UTCJul 26, 12:40 UTC10m
2026-07-26 CSN3048 KUL → CAN Jul 26, 06:55 UTCJul 26, 07:10 UTC15m
2026-07-25 CSN8020 BKK → CAN Jul 25, 13:35 UTCJul 26, 05:05 UTC15h 30m
2026-07-24 CSN8019 CAN → BKK Jul 24, 19:05 UTCJul 25, 12:10 UTC17h 5m
2026-07-24 CSN5035 CAN → LAX Jul 24, 17:05 UTCJul 24, 17:35 UTC30m
2026-07-24 CSN5035 CAN → LAX Jul 24, 14:15 UTCJul 24, 14:25 UTC10m
2026-07-24 CSN3048 KUL → CAN Jul 24, 07:00 UTCJul 24, 07:20 UTC20m
2026-07-24 CSN3047 CAN → KUL Jul 24, 05:05 UTCJul 24, 05:30 UTC25m
2026-07-24 CSN3047 CAN → KUL Jul 24, 01:45 UTCJul 24, 01:55 UTC10m
2026-07-23 CSN5036 LAX → CAN Jul 23, 17:50 UTCJul 23, 18:05 UTC15m
2026-07-23 CSN5035 CAN → LAX Jul 23, 12:40 UTCJul 23, 15:50 UTC3h 10m
2026-07-23 CSN3048 KUL → CAN Jul 23, 06:50 UTCJul 23, 09:45 UTC2h 55m
2026-07-23 CSN3047 CAN → KUL Jul 23, 01:55 UTCJul 23, 05:15 UTC3h 20m
2026-07-22 CSN5036 LAX → CAN Jul 22, 17:45 UTCJul 22, 18:00 UTC15m
2026-07-22 CSN5035 CAN → LAX Jul 22, 15:30 UTCJul 22, 16:00 UTC30m
2026-07-22 CSN3047 CAN → KUL Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-22 CSN3047 CAN → KUL Jul 22, 02:10 UTCJul 22, 02:20 UTC10m
2026-07-21 CSN3036 - Jul 21, 21:10 UTCJul 21, 21:45 UTC35m
2026-07-21 CSN3035 - Jul 21, 12:20 UTCJul 21, 19:50 UTC7h 30m
2026-07-21 CSN8301 CAN → KUL Jul 21, 10:05 UTCJul 21, 10:35 UTC30m
2026-07-20 CSN373 CAN → SGN Jul 20, 06:25 UTCJul 20, 06:40 UTC15m
2026-07-19 CSN3048 - Jul 19, 07:15 UTCJul 19, 07:30 UTC15m
2026-07-19 CSN3047 - Jul 19, 05:05 UTCJul 19, 05:50 UTC45m
2026-07-19 CSN3047 - Jul 19, 01:50 UTCJul 19, 05:00 UTC3h 10m
2026-07-18 CSN5036 LAX → CAN Jul 18, 18:30 UTCJul 18, 18:40 UTC10m
2026-07-18 CSN5035 CAN → LAX Jul 18, 16:15 UTCJul 18, 16:45 UTC30m
2026-07-18 CSN5035 CAN → LAX Jul 18, 13:15 UTCJul 18, 13:30 UTC15m
2026-07-18 CSN5096 - Jul 18, 08:20 UTCJul 18, 08:30 UTC10m
2026-07-18 CSN5095 CAN → BKK Jul 18, 06:20 UTCJul 18, 06:35 UTC15m
2026-07-17 CSN8020 - Jul 17, 13:25 UTCJul 17, 13:45 UTC20m
2026-07-17 CSN8019 - Jul 17, 11:15 UTCJul 17, 11:50 UTC35m
2026-07-16 CSN3036 - Jul 16, 20:25 UTCJul 16, 20:45 UTC20m
2026-07-16 CSN3035 - Jul 16, 18:05 UTCJul 16, 18:25 UTC20m
2026-07-16 CSN8302 - Jul 16, 10:25 UTCJul 16, 10:40 UTC15m
2026-07-16 CSN8301 - Jul 16, 08:30 UTCJul 16, 09:05 UTC35m
2026-07-15 CSN8020 - Jul 15, 13:10 UTCJul 15, 13:25 UTC15m
2026-07-15 CSN8019 - Jul 15, 11:25 UTCJul 15, 12:00 UTC35m
2026-07-14 CSN5036 - Jul 14, 17:50 UTCJul 14, 18:05 UTC15m
2026-07-14 CSN5035 - Jul 14, 12:50 UTCJul 14, 16:05 UTC3h 15m
2026-07-14 CSN3048 - Jul 14, 10:40 UTCJul 14, 10:55 UTC15m
2026-07-14 CSN3048 - Jul 14, 07:15 UTCJul 14, 07:25 UTC10m
2026-07-14 CSN3047 - Jul 14, 05:35 UTCJul 14, 06:00 UTC25m
2026-07-14 CSN3047 - Jul 14, 02:40 UTCJul 14, 02:50 UTC10m
2026-07-11 CSN8019 - Jul 11, 12:05 UTCJul 11, 12:30 UTC25m
2026-07-11 CSN8019 - Jul 11, 09:45 UTCJul 11, 09:55 UTC10m
2026-07-10 CSN5036 - Jul 10, 17:30 UTCJul 10, 17:40 UTC10m
2026-07-10 CSN5035 - Jul 10, 15:25 UTCJul 10, 15:55 UTC30m
2026-07-10 CSN5096 - Jul 10, 08:30 UTCJul 10, 08:55 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-20D6 page for operator, model, and routing details .

Mode-S 781796 frequently asked

What is Mode-S code 781796?
781796 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20D6.
Where is Mode-S 781796 registered?
Mode-S code 781796 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781796 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781796, octal 36013626, decimal 7,870,358.
What flights does 781796 operate?
Mode-S 781796 has broadcast 20 distinct callsigns, including CSN5035, CSN8019, CSN5036, CSN8020, CSN5095.