Apparatus

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sensors Mode-S transponder

7812FA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1378 · BOEING 757-200

Hex
7812FA
Octal
36011372
Decimal
7,869,178
Country
CN
Tail
B-1378
Type
B752
No current signal · last broadcast 9d ago
Flights observed
76
Distinct callsigns
20
Country
CN
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S 7812FA.

Country allocation

The ICAO 24-bit address 7812FA 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
CSS7240 - 6 2026-06-19
CSS326 - 6 2026-07-06
CSS313 - 5 2026-07-07
CSS325 - 4 2026-07-06
CSS314 - 4 2026-07-07
CSS274 SF Airlines 4 2026-04-30
CSS273 SF Airlines 4 2026-04-30
CSS6812 - 3 2026-06-25
CSS7202 - 2 2026-06-24
CSS7133 - 2 2026-06-10
CSS7109 - 2 2026-04-18
CSS6839 - 2 2026-07-07
CSS6828 SF Airlines 2 2026-07-02
CSS6813 - 2 2026-07-04
CSS6811 - 2 2026-06-24
CSS280 SF Airlines 2 2026-05-08
CSS142 SF Airlines 2 2026-05-08
CSS7344 SF Airlines 1 2026-06-22
CSS7278 - 1 2026-07-08
CSS7224 SF Airlines 1 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 CSS7278 - Jul 8, 20:40 UTCJul 8, 20:55 UTC15m
2026-07-08 CSS6840 - Jul 8, 18:40 UTCJul 8, 19:05 UTC25m
2026-07-08 CSS272 - Jul 8, 06:20 UTCJul 8, 07:15 UTC55m
2026-07-08 CSS271 - Jul 8, 03:55 UTCJul 8, 05:05 UTC1h 10m
2026-07-07 CSS6839 - Jul 7, 21:50 UTCJul 7, 22:05 UTC15m
2026-07-07 CSS314 - Jul 7, 12:15 UTCJul 7, 13:50 UTC1h 35m
2026-07-07 CSS313 - Jul 7, 10:05 UTCJul 7, 10:35 UTC30m
2026-07-07 CSS313 - Jul 7, 08:15 UTCJul 7, 08:25 UTC10m
2026-07-06 CSS326 - Jul 6, 21:55 UTCJul 6, 22:10 UTC15m
2026-07-06 CSS326 - Jul 6, 20:15 UTCJul 6, 20:45 UTC30m
2026-07-06 CSS325 - Jul 6, 17:00 UTCJul 6, 18:50 UTC1h 50m
2026-07-04 CSS6814 - Jul 4, 22:15 UTCJul 4, 22:35 UTC20m
2026-07-04 CSS6813 - Jul 4, 20:40 UTCJul 4, 20:55 UTC15m
2026-07-04 CSS6813 - Jul 4, 18:15 UTCJul 4, 18:30 UTC15m
2026-07-04 CSS6990 - Jul 4, 04:05 UTCJul 4, 04:20 UTC15m
2026-07-03 CSS6846 - Jul 3, 23:40 UTCJul 4, 00:05 UTC25m
2026-07-02 CSS6828 PVG → SZX Jul 2, 23:30 UTCJul 2, 23:55 UTC25m
2026-07-02 CSS6828 PVG → SZX Jul 2, 22:35 UTCJul 2, 22:55 UTC20m
2026-07-02 CSS6827 - Jul 2, 17:30 UTCJul 2, 17:45 UTC15m
2026-07-01 CSS6806 - Jul 1, 21:00 UTCJul 1, 21:10 UTC10m
2026-06-27 CSS6805 - Jun 27, 17:14 UTCJun 27, 17:25 UTC10m
2026-06-26 CSS326 - Jun 26, 22:34 UTCJun 26, 22:49 UTC15m
2026-06-26 CSS326 - Jun 26, 20:44 UTCJun 26, 21:15 UTC30m
2026-06-26 CSS325 - Jun 26, 16:44 UTCJun 26, 18:44 UTC2h 0m
2026-06-25 CSS6812 - Jun 25, 20:25 UTCJun 25, 20:39 UTC15m
2026-06-24 CSS7202 - Jun 24, 22:00 UTCJun 24, 22:10 UTC10m
2026-06-24 CSS6811 - Jun 24, 16:59 UTCJun 24, 17:14 UTC15m
2026-06-23 CSS6812 - Jun 23, 20:29 UTCJun 23, 20:49 UTC20m
2026-06-22 CSS7344 PEK → WUX Jun 22, 21:45 UTCJun 22, 21:59 UTC15m
2026-06-22 CSS6811 - Jun 22, 17:00 UTCJun 22, 17:10 UTC10m
2026-06-21 CSS6836 HGH → SZX Jun 21, 22:44 UTCJun 21, 23:05 UTC20m
2026-06-21 CSS7224 SZX → HGH Jun 21, 17:54 UTCJun 21, 18:04 UTC10m
2026-06-20 CSS6844 - Jun 20, 01:05 UTCJun 20, 01:19 UTC15m
2026-06-19 CSS7240 - Jun 19, 20:49 UTCJun 19, 20:59 UTC10m
2026-06-13 CSS6839 - Jun 13, 22:05 UTCJun 13, 22:15 UTC10m
2026-06-13 CSS6852 HGH → SZX Jun 13, 20:00 UTCJun 13, 20:20 UTC20m
2026-06-10 CSS7133 - Jun 10, 23:25 UTCJun 10, 23:40 UTC15m
2026-06-09 CSS7133 - Jun 9, 23:05 UTCJun 9, 23:15 UTC10m
2026-06-08 CSS7127 - Jun 8, 23:25 UTCJun 8, 23:35 UTC10m
2026-06-06 CSS6801 SZX → EHU Jun 6, 17:00 UTCJun 6, 17:10 UTC10m
2026-06-05 CSS326 MNL → SZX Jun 5, 21:50 UTCJun 5, 22:05 UTC15m
2026-06-05 CSS326 MNL → SZX Jun 5, 20:10 UTCJun 5, 20:35 UTC25m
2026-06-05 CSS325 SZX → MNL Jun 5, 18:05 UTCJun 5, 18:35 UTC30m
2026-06-05 CSS325 SZX → MNL Jun 5, 16:50 UTCJun 5, 17:00 UTC10m
2026-06-05 CSS314 - Jun 5, 11:40 UTCJun 5, 12:15 UTC35m
2026-06-05 CSS313 SZX → BKK Jun 5, 08:20 UTCJun 5, 10:00 UTC1h 40m
2026-06-05 CSS313 SZX → BKK Jun 5, 07:40 UTCJun 5, 07:50 UTC10m
2026-06-04 CSS314 - Jun 4, 13:40 UTCJun 4, 13:55 UTC15m
2026-06-04 CSS314 - Jun 4, 11:25 UTCJun 4, 13:00 UTC1h 35m
2026-06-04 CSS313 SZX → BKK Jun 4, 07:25 UTCJun 4, 09:05 UTC1h 40m

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-1378 page for operator, model, and routing details .

Mode-S 7812FA frequently asked

What is Mode-S code 7812FA?
7812FA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1378.
Where is Mode-S 7812FA registered?
Mode-S code 7812FA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812FA broadcasting right now?
No active broadcast right now. Last signal was 9d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812FA, octal 36011372, decimal 7,869,178.
What flights does 7812FA operate?
Mode-S 7812FA has broadcast 20 distinct callsigns, including CSS7240, CSS326, CSS313, CSS325, CSS314.