Apparatus

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sensors Mode-S transponder

78091B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6945 · AIRBUS A-320

Hex
78091B
Octal
36004433
Decimal
7,866,651
Country
CN
Tail
B-6945
Type
A320
No current signal · last broadcast 5h ago
Flights observed
87
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 78091B.

Country allocation

The ICAO 24-bit address 78091B 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
CSN6609 - 9 2026-06-20
CSN6610 - 7 2026-06-20
CSN6341 China Southern Airlines 6 2026-05-08
CSN8256 - 4 2026-07-10
CSN6620 - 4 2026-07-14
CSN6541 - 4 2026-07-04
CSN6357 - 4 2026-07-01
CSN6155 - 4 2026-06-30
CSN6570 China Southern Airlines 3 2026-06-29
CSN6405 China Southern Airlines 3 2026-06-27
CSN6358 - 3 2026-07-01
CSN6168 - 3 2026-07-05
CSN6146 - 3 2026-06-30
CSN6852 - 2 2026-06-26
CSN6851 - 2 2026-06-23
CSN6545 China Southern Airlines 2 2026-06-04
CSN6420 - 2 2026-07-06
CSN6342 China Southern Airlines 2 2026-05-18
CSN6194 - 2 2026-07-08
CSN8460 China Southern Airlines 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN6620 - Jul 14, 14:35 UTCJul 14, 14:55 UTC20m
2026-07-14 CSN6620 - Jul 14, 10:30 UTCJul 14, 10:50 UTC20m
2026-07-14 CSN6619 - Jul 14, 08:20 UTCJul 14, 08:45 UTC25m
2026-07-13 CSN5954 - Jul 13, 13:10 UTCJul 14, 03:55 UTC14h 45m
2026-07-10 CSN8256 - Jul 10, 12:20 UTCJul 10, 12:45 UTC25m
2026-07-08 CSN6419 - Jul 8, 13:25 UTCJul 9, 01:10 UTC11h 45m
2026-07-08 CSN6194 - Jul 8, 09:35 UTCJul 8, 09:45 UTC10m
2026-07-06 CSN6420 - Jul 6, 09:30 UTCJul 7, 01:00 UTC15h 30m
2026-07-06 CSN6193 - Jul 6, 07:35 UTCJul 6, 07:45 UTC10m
2026-07-05 CSN6168 - Jul 5, 12:30 UTCJul 5, 12:45 UTC15m
2026-07-04 CSN6541 - Jul 4, 13:10 UTCJul 5, 02:10 UTC13h 0m
2026-07-03 CSN8256 - Jul 3, 12:25 UTCJul 3, 12:45 UTC20m
2026-07-01 CSN6420 - Jul 1, 08:40 UTCJul 2, 01:00 UTC16h 20m
2026-07-01 CSN6358 - Jul 1, 06:20 UTCJul 2, 01:00 UTC18h 40m
2026-07-01 CSN6357 - Jul 1, 03:55 UTCJul 1, 04:15 UTC20m
2026-06-30 CSN6155 - Jun 30, 07:20 UTCJul 1, 01:45 UTC18h 25m
2026-06-30 CSN6146 - Jun 30, 03:50 UTCJun 30, 04:00 UTC10m
2026-06-29 CSN6570 XIY → CGQ Jun 29, 06:40 UTCJun 29, 15:34 UTC8h 55m
2026-06-28 CSN6155 - Jun 28, 07:25 UTCJun 29, 06:44 UTC23h 20m
2026-06-28 CSN6146 - Jun 28, 03:50 UTCJun 28, 03:59 UTC10m
2026-06-27 CSN6405 CGQ → HGH Jun 27, 00:20 UTCJun 27, 11:00 UTC10h 40m
2026-06-26 CSN6405 CGQ → HGH Jun 26, 16:05 UTCJun 27, 11:00 UTC18h 55m
2026-06-26 CSN6852 - Jun 26, 08:10 UTCJun 27, 00:34 UTC16h 25m
2026-06-25 CSN3606 CAN → CGQ Jun 25, 11:10 UTCJun 26, 08:24 UTC21h 15m
2026-06-23 CSN6852 - Jun 23, 14:44 UTCJun 24, 03:10 UTC12h 25m
2026-06-23 CSN6851 - Jun 23, 07:25 UTCJun 24, 03:10 UTC19h 45m
2026-06-20 CSN6610 - Jun 20, 08:59 UTCJun 20, 11:34 UTC2h 35m
2026-06-20 CSN6609 - Jun 20, 07:04 UTCJun 20, 07:19 UTC15m
2026-06-20 CSN6609 - Jun 20, 04:34 UTCJun 20, 04:44 UTC10m
2026-06-13 CSN6364 CKG → CGQ Jun 13, 07:50 UTCJun 13, 08:00 UTC10m
2026-06-12 CSN6610 SZX → CGQ Jun 12, 11:30 UTCJun 13, 08:00 UTC20h 29m
2026-06-12 CSN6610 SZX → CGQ Jun 12, 09:05 UTCJun 12, 09:15 UTC10m
2026-06-12 CSN6609 CGQ → SZX Jun 12, 06:50 UTCJun 12, 07:15 UTC25m
2026-06-12 CSN6609 CGQ → SZX Jun 12, 04:20 UTCJun 12, 04:35 UTC15m
2026-06-11 CSN6609 CGQ → SZX Jun 11, 07:45 UTCJun 12, 04:35 UTC20h 51m
2026-06-10 CSN6358 SZX → CGQ Jun 10, 08:50 UTCJun 11, 07:45 UTC22h 55m
2026-06-10 CSN6357 CGQ → SZX Jun 10, 01:20 UTCJun 10, 01:40 UTC20m
2026-06-08 CSN6168 PKX → CGQ Jun 8, 12:45 UTCJun 8, 13:05 UTC20m
2026-06-08 CSN6149 CGQ → PKX Jun 8, 08:45 UTCJun 8, 08:55 UTC10m
2026-06-06 CSN6610 SZX → CGQ Jun 6, 12:24 UTCJun 7, 02:19 UTC13h 55m
2026-06-06 CSN6609 CGQ → SZX Jun 6, 04:40 UTCJun 6, 04:55 UTC15m
2026-06-05 CSN6358 SZX → CGQ Jun 5, 10:05 UTCJun 6, 04:55 UTC18h 50m
2026-06-05 CSN6357 CGQ → SZX Jun 5, 04:00 UTCJun 5, 04:25 UTC25m
2026-06-04 CSN6357 CGQ → SZX Jun 4, 08:50 UTCJun 5, 01:50 UTC17h 0m
2026-06-04 CSN6545 CGQ → HGH Jun 4, 00:15 UTCJun 4, 09:30 UTC9h 15m
2026-06-02 CSN6405 CGQ → HGH Jun 2, 08:40 UTCJun 2, 09:20 UTC40m
2026-06-01 CSN6155 CGQ → PVG Jun 1, 07:15 UTCJun 1, 07:55 UTC40m
2026-05-31 CSN6620 ZUH → WUH May 31, 10:20 UTCMay 31, 10:40 UTC20m
2026-05-28 CSN6610 SZX → CGQ May 28, 11:25 UTCMay 29, 09:50 UTC22h 25m
2026-05-28 CSN6610 SZX → CGQ May 28, 09:10 UTCMay 28, 09:20 UTC10m

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-6945 page for operator, model, and routing details .

Mode-S 78091B frequently asked

What is Mode-S code 78091B?
78091B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6945.
Where is Mode-S 78091B registered?
Mode-S code 78091B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78091B broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78091B, octal 36004433, decimal 7,866,651.
What flights does 78091B operate?
Mode-S 78091B has broadcast 20 distinct callsigns, including CSN6609, CSN6610, CSN6341, CSN8256, CSN6620.