Apparatus

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sensors Mode-S transponder

7805B3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2899 · BOEING 757-200

Hex
7805B3
Octal
36002663
Decimal
7,865,779
Country
CN
Tail
B-2899
Type
B752
No current signal · last broadcast 15h ago
Flights observed
42
Distinct callsigns
20
Country
CN
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 7805B3.

Country allocation

The ICAO 24-bit address 7805B3 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
CSS326 SF Airlines 7 2026-05-30
CSS7125 SF Airlines 4 2026-05-18
CSS325 SF Airlines 4 2026-05-30
CSS313 SF Airlines 3 2026-05-30
CSS7277 - 2 2026-04-17
CSS7204 SF Airlines 2 2026-06-02
CSS7203 SF Airlines 2 2026-06-02
CSS7110 SF Airlines 2 2026-05-05
CSS7109 SF Airlines 2 2026-05-19
CSS6839 SF Airlines 2 2026-04-17
CSS314 - 2 2026-05-30
CSS7126 SF Airlines 1 2026-04-20
CSS7119 SF Airlines 1 2026-05-17
CSS6840 SF Airlines 1 2026-04-19
CSS6814 SF Airlines 1 2026-05-02
CSS6812 SF Airlines 1 2026-05-26
CSS6806 SF Airlines 1 2026-05-21
CSS6805 SF Airlines 1 2026-05-28
CSS6804 SF Airlines 1 2026-05-29
CSS274 SF Airlines 1 2026-05-13

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-06-02 CSS7204 SZX → PVG Jun 2, 20:10 UTCJun 2, 20:20 UTC10m
2026-06-02 CSS7203 PVG → SZX Jun 2, 17:15 UTCJun 2, 18:05 UTC50m
2026-06-01 CSS7204 SZX → PVG Jun 1, 20:00 UTCJun 1, 20:15 UTC15m
2026-06-01 CSS7203 PVG → SZX Jun 1, 18:00 UTCJun 1, 18:20 UTC20m
2026-05-30 CSS326 MNL → SZX May 30, 22:30 UTCMay 30, 22:40 UTC10m
2026-05-30 CSS326 MNL → SZX May 30, 20:25 UTCMay 30, 21:00 UTC35m
2026-05-30 CSS325 SZX → MNL May 30, 16:50 UTCMay 30, 18:40 UTC1h 50m
2026-05-30 CSS314 - May 30, 09:30 UTCMay 30, 11:05 UTC1h 35m
2026-05-30 CSS313 SZX → BKK May 30, 05:35 UTCMay 30, 07:15 UTC1h 40m
2026-05-29 CSS6804 EHU → SZX May 29, 21:45 UTCMay 29, 22:00 UTC15m
2026-05-28 CSS6805 SZX → EHU May 28, 16:50 UTCMay 28, 17:05 UTC15m
2026-05-27 CSS326 MNL → SZX May 27, 21:55 UTCMay 27, 22:10 UTC15m
2026-05-27 CSS326 MNL → SZX May 27, 20:10 UTCMay 27, 21:10 UTC1h 0m
2026-05-27 CSS325 SZX → MNL May 27, 16:35 UTCMay 27, 18:30 UTC1h 55m
2026-05-26 CSS6812 PEK → SZX May 26, 20:34 UTCMay 26, 20:45 UTC10m
2026-05-23 CSS326 MNL → SZX May 23, 22:15 UTCMay 23, 22:30 UTC15m
2026-05-23 CSS326 MNL → SZX May 23, 20:40 UTCMay 23, 21:10 UTC30m
2026-05-23 CSS325 SZX → MNL May 23, 17:15 UTCMay 23, 18:55 UTC1h 40m
2026-05-22 CSS326 MNL → SZX May 22, 19:50 UTCMay 22, 21:40 UTC1h 50m
2026-05-22 CSS325 SZX → MNL May 22, 16:25 UTCMay 22, 18:20 UTC1h 55m
2026-05-21 CSS6806 EHU → SZX May 21, 20:55 UTCMay 21, 21:10 UTC15m
2026-05-20 CSS314 - May 20, 11:35 UTCMay 20, 12:00 UTC25m
2026-05-20 CSS313 SZX → BKK May 20, 08:30 UTCMay 20, 09:00 UTC30m
2026-05-20 CSS313 SZX → BKK May 20, 06:40 UTCMay 20, 06:50 UTC10m
2026-05-19 CSS7109 PEK → SZX May 19, 19:20 UTCMay 19, 19:35 UTC15m
2026-05-19 CSS7109 PEK → SZX May 19, 16:45 UTCMay 19, 17:00 UTC15m
2026-05-18 CSS7125 PEK → WUX May 18, 16:55 UTCMay 18, 17:05 UTC10m
2026-05-17 CSS7119 PEK → HGH May 17, 16:45 UTCMay 17, 16:55 UTC10m
2026-05-13 CSS274 KIX → TAO May 13, 03:50 UTCMay 13, 05:10 UTC1h 20m
2026-05-13 CSS273 TAO → KIX May 13, 00:15 UTCMay 13, 01:45 UTC1h 30m
2026-05-05 CSS7110 SZX → PEK May 5, 21:40 UTCMay 5, 21:55 UTC15m
2026-05-02 CSS6814 PEK → SZX May 2, 21:55 UTCMay 2, 22:10 UTC15m
2026-04-24 CSS7125 PEK → WUX Apr 24, 17:00 UTCApr 24, 17:10 UTC10m
2026-04-21 CSS7125 PEK → WUX Apr 21, 16:50 UTCApr 21, 17:05 UTC15m
2026-04-20 CSS7126 WUX → PEK Apr 20, 21:25 UTCApr 20, 21:35 UTC10m
2026-04-20 CSS7125 PEK → WUX Apr 20, 16:55 UTCApr 20, 17:05 UTC10m
2026-04-19 CSS7110 SZX → PEK Apr 19, 21:30 UTCApr 19, 21:40 UTC10m
2026-04-19 CSS6840 WUX → SZX Apr 19, 00:15 UTCApr 19, 00:30 UTC15m
2026-04-17 CSS6839 SZX → WUX Apr 17, 21:35 UTCApr 17, 21:45 UTC10m
2026-04-17 CSS7277 - Apr 17, 19:55 UTCApr 17, 20:05 UTC10m
2026-04-14 CSS6839 SZX → WUX Apr 14, 21:45 UTCApr 14, 22:00 UTC15m
2026-04-14 CSS7277 - Apr 14, 19:20 UTCApr 14, 19:40 UTC20m

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-2899 page for operator, model, and routing details .

Mode-S 7805B3 frequently asked

What is Mode-S code 7805B3?
7805B3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2899.
Where is Mode-S 7805B3 registered?
Mode-S code 7805B3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7805B3 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7805B3, octal 36002663, decimal 7,865,779.
What flights does 7805B3 operate?
Mode-S 7805B3 has broadcast 20 distinct callsigns, including CSS326, CSS7125, CSS325, CSS313, CSS7277.