Apparatus

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sensors Mode-S transponder

7813F7

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1126 · BOEING 737 MAX 8

Hex
7813F7
Octal
36011767
Decimal
7,869,431
Country
CN
Tail
B-1126
Type
B38M
No current signal · last broadcast 6h ago
Flights observed
234
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7813F7.

Country allocation

The ICAO 24-bit address 7813F7 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
CSN365 - 30 2026-07-13
CSN3055 - 30 2026-07-13
CSN398 - 28 2026-06-25
CSN3056 - 23 2026-07-13
CSN366 - 21 2026-07-14
CSN397 - 16 2026-06-25
CSN8012 - 11 2026-07-05
CSN8011 - 11 2026-07-05
CSN8362 China Southern Airlines 5 2026-06-25
CSN8072 China Southern Airlines 5 2026-05-23
CSN8071 China Southern Airlines 5 2026-05-22
CSN5056 - 5 2026-07-09
CSN5055 - 5 2026-07-08
CSN3047 China Southern Airlines 5 2026-06-19
CSN8347 China Southern Airlines 4 2026-05-07
CSN5052 - 4 2026-07-10
CSN8348 China Southern Airlines 3 2026-05-07
CSN5042 - 3 2026-07-08
CSN5041 - 3 2026-07-08
CSN3048 China Southern Airlines 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN366 - Jul 14, 00:25 UTCJul 14, 00:45 UTC20m
2026-07-13 CSN365 - Jul 13, 12:55 UTCJul 13, 13:30 UTC35m
2026-07-13 CSN365 - Jul 13, 10:10 UTCJul 13, 10:20 UTC10m
2026-07-13 CSN3056 - Jul 13, 04:50 UTCJul 13, 06:30 UTC1h 40m
2026-07-13 CSN3055 - Jul 13, 01:50 UTCJul 13, 03:30 UTC1h 40m
2026-07-12 CSN366 - Jul 12, 00:10 UTCJul 12, 00:25 UTC15m
2026-07-11 CSN365 - Jul 11, 10:10 UTCJul 11, 13:30 UTC3h 20m
2026-07-11 CSN3056 - Jul 11, 05:01 UTCJul 11, 06:40 UTC1h 40m
2026-07-11 CSN3055 - Jul 11, 01:10 UTCJul 11, 03:45 UTC2h 35m
2026-07-10 CSN5052 - Jul 10, 21:15 UTCJul 10, 21:45 UTC30m
2026-07-10 CSN5052 - Jul 10, 19:50 UTCJul 10, 20:20 UTC30m
2026-07-10 CSN5051 ZGN → MNL Jul 10, 16:40 UTCJul 10, 18:25 UTC1h 45m
2026-07-09 CSN5056 - Jul 9, 08:35 UTCJul 9, 09:15 UTC40m
2026-07-08 CSN5055 - Jul 8, 18:05 UTCJul 9, 07:45 UTC13h 40m
2026-07-08 CSN5042 - Jul 8, 11:40 UTCJul 8, 12:20 UTC40m
2026-07-08 CSN5041 - Jul 8, 08:20 UTCJul 8, 10:25 UTC2h 5m
2026-07-08 CSN3050 - Jul 8, 04:35 UTCJul 8, 04:50 UTC15m
2026-07-08 CSN3049 - Jul 8, 01:35 UTCJul 8, 03:00 UTC1h 25m
2026-07-07 CSN5056 - Jul 7, 08:25 UTCJul 7, 08:45 UTC20m
2026-07-06 CSN5055 - Jul 6, 18:00 UTCJul 7, 07:40 UTC13h 40m
2026-07-06 CSN5042 - Jul 6, 13:20 UTCJul 6, 15:05 UTC1h 45m
2026-07-06 CSN5041 - Jul 6, 09:40 UTCJul 6, 12:15 UTC2h 35m
2026-07-06 CSN3050 - Jul 6, 04:45 UTCJul 6, 04:55 UTC10m
2026-07-05 CSN8012 - Jul 5, 09:00 UTCJul 5, 09:15 UTC15m
2026-07-05 CSN8011 - Jul 5, 06:55 UTCJul 5, 07:35 UTC40m
2026-07-05 CSN8011 - Jul 5, 04:05 UTCJul 5, 04:20 UTC15m
2026-07-04 CSN366 - Jul 4, 00:10 UTCJul 4, 00:25 UTC15m
2026-07-03 CSN365 - Jul 3, 15:00 UTCJul 3, 15:35 UTC35m
2026-07-03 CSN365 - Jul 3, 12:05 UTCJul 3, 12:20 UTC15m
2026-07-03 CSN3056 - Jul 3, 04:55 UTCJul 3, 06:40 UTC1h 45m
2026-07-03 CSN3055 - Jul 3, 01:00 UTCJul 3, 03:25 UTC2h 25m
2026-07-01 CSN3056 - Jul 1, 04:50 UTCJul 1, 06:30 UTC1h 40m
2026-07-01 CSN3055 - Jul 1, 00:45 UTCJul 1, 03:00 UTC2h 15m
2026-06-30 CSN5056 - Jun 30, 11:05 UTCJun 30, 11:25 UTC20m
2026-06-29 CSN5055 - Jun 29, 20:44 UTCJun 30, 10:15 UTC13h 30m
2026-06-28 CSN3056 - Jun 28, 06:34 UTCJun 28, 06:49 UTC15m
2026-06-27 CSN5042 - Jun 27, 11:39 UTCJun 28, 04:59 UTC17h 20m
2026-06-27 CSN5041 - Jun 27, 07:45 UTCJun 27, 09:44 UTC2h 0m
2026-06-27 CSN366 - Jun 27, 00:14 UTCJun 27, 03:04 UTC2h 50m
2026-06-26 CSN365 - Jun 26, 13:34 UTCJun 26, 14:05 UTC30m
2026-06-26 CSN3056 - Jun 26, 05:19 UTCJun 26, 07:00 UTC1h 40m
2026-06-26 CSN3055 - Jun 26, 01:50 UTCJun 26, 03:54 UTC2h 5m
2026-06-25 CSN398 - Jun 25, 11:35 UTCJun 25, 11:59 UTC25m
2026-06-25 CSN398 - Jun 25, 10:15 UTCJun 25, 10:45 UTC30m
2026-06-25 CSN397 - Jun 25, 06:40 UTCJun 25, 08:34 UTC1h 55m
2026-06-25 CSN8362 DRW → CAN Jun 25, 03:04 UTCJun 25, 03:29 UTC25m
2026-06-25 CSN8362 DRW → CAN Jun 25, 01:40 UTCJun 25, 02:10 UTC30m
2026-06-24 CSN8361 CAN → DRW Jun 24, 14:39 UTCJun 24, 16:34 UTC1h 55m
2026-06-24 CSN8012 - Jun 24, 12:09 UTCJun 24, 12:20 UTC10m
2026-06-24 CSN8012 - Jun 24, 09:29 UTCJun 24, 09:45 UTC15m

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-1126 page for operator, model, and routing details .

Mode-S 7813F7 frequently asked

What is Mode-S code 7813F7?
7813F7 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1126.
Where is Mode-S 7813F7 registered?
Mode-S code 7813F7 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7813F7 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7813F7, octal 36011767, decimal 7,869,431.
What flights does 7813F7 operate?
Mode-S 7813F7 has broadcast 20 distinct callsigns, including CSN365, CSN3055, CSN398, CSN3056, CSN366.