Apparatus

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sensors Mode-S transponder

7812A0

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1341 · BOEING 787-9 Dreamliner

Hex
7812A0
Octal
36011240
Decimal
7,869,088
Country
CN
Tail
B-1341
Type
B789
No current signal · last broadcast 2h ago
Flights observed
83
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7812A0.

Country allocation

The ICAO 24-bit address 7812A0 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
CHH7911 Hainan Airlines 6 2026-04-22
CHH7711 Hainan Airlines 5 2026-05-24
CHH7157 Hainan Airlines 5 2026-05-21
CHH7963 Hainan Airlines 4 2026-04-24
CHH776 Hainan Airlines 4 2026-04-30
CHH7703 Hainan Airlines 4 2026-05-18
CHH757 Hainan Airlines 4 2026-05-24
CHH492 Hainan Airlines 4 2026-05-07
CHH7964 Hainan Airlines 3 2026-04-24
CHH7912 Hainan Airlines 3 2026-04-22
CHH775 Hainan Airlines 3 2026-04-29
CHH758 Hainan Airlines 3 2026-05-25
CHH7395 Hainan Airlines 3 2026-05-22
CHH789 Hainan Airlines 2 2026-05-22
CHH7713 Hainan Airlines 2 2026-05-21
CHH7712 Hainan Airlines 2 2026-05-21
CHH761 Hainan Airlines 2 2026-05-15
CHH7396 Hainan Airlines 2 2026-05-16
CHH7158 Hainan Airlines 2 2026-05-17
CHH491 Hainan Airlines 2 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CHH7921 PVG → BRU May 29, 23:10 UTCMay 30, 06:10 UTC7h 0m
2026-05-29 CHH7725 SZX → PVG May 29, 06:30 UTCMay 29, 06:45 UTC15m
2026-05-25 CHH758 CDG → SZX May 25, 20:24 UTCMay 25, 20:40 UTC15m
2026-05-25 CHH758 CDG → SZX May 25, 09:40 UTCMay 25, 15:55 UTC6h 15m
2026-05-24 CHH757 SZX → CDG May 24, 23:00 UTCMay 25, 06:00 UTC7h 0m
2026-05-24 CHH757 SZX → CDG May 24, 17:50 UTCMay 24, 18:00 UTC10m
2026-05-24 CHH7711 PEK → SZX May 24, 12:15 UTCMay 24, 12:25 UTC10m
2026-05-24 CHH7706 SZX → PEK May 24, 05:20 UTCMay 24, 05:35 UTC15m
2026-05-23 CHH790 VIE → SZX May 23, 09:20 UTCMay 23, 12:35 UTC3h 15m
2026-05-22 CHH789 SZX → VIE May 22, 23:20 UTCMay 23, 05:25 UTC6h 4m
2026-05-22 CHH789 SZX → VIE May 22, 18:20 UTCMay 22, 18:35 UTC15m
2026-05-22 CHH7395 SZX → HGH May 22, 06:35 UTCMay 22, 06:45 UTC10m
2026-05-21 CHH7157 SZX → CKG May 21, 23:45 UTCMay 21, 23:55 UTC10m
2026-05-21 CHH7713 PEK → SZX May 21, 20:55 UTCMay 21, 21:05 UTC10m
2026-05-21 CHH7713 PEK → SZX May 21, 18:30 UTCMay 21, 18:45 UTC15m
2026-05-21 CHH7712 SZX → PEK May 21, 13:10 UTCMay 21, 13:25 UTC15m
2026-05-21 CHH7712 SZX → PEK May 21, 10:40 UTCMay 21, 10:55 UTC15m
2026-05-20 CHH7157 SZX → CKG May 20, 23:10 UTCMay 20, 23:25 UTC15m
2026-05-18 CHH7703 PEK → SZX May 18, 05:05 UTCMay 18, 05:15 UTC10m
2026-05-18 CHH7703 PEK → SZX May 18, 02:30 UTCMay 18, 02:45 UTC15m
2026-05-17 CHH7158 CKG → SZX May 17, 04:30 UTCMay 17, 04:40 UTC10m
2026-05-16 CHH7157 SZX → CKG May 16, 23:35 UTCMay 16, 23:45 UTC10m
2026-05-16 CHH7396 HGH → SZX May 16, 11:31 UTCMay 16, 11:51 UTC20m
2026-05-16 CHH7395 SZX → HGH May 16, 06:35 UTCMay 16, 06:45 UTC10m
2026-05-15 CHH7767 SZX → KMG May 15, 23:55 UTCMay 16, 00:05 UTC10m
2026-05-15 CHH762 BUD → SZX May 15, 10:10 UTCMay 15, 13:15 UTC3h 5m
2026-05-15 CHH761 SZX → BUD May 15, 01:05 UTCMay 15, 05:35 UTC4h 30m
2026-05-14 CHH761 SZX → BUD May 14, 18:20 UTCMay 14, 18:30 UTC10m
2026-05-11 CHH758 CDG → SZX May 11, 09:25 UTCMay 11, 15:20 UTC5h 55m
2026-05-11 CHH757 SZX → CDG May 11, 00:40 UTCMay 11, 06:00 UTC5h 20m
2026-05-10 CHH757 SZX → CDG May 10, 17:49 UTCMay 10, 17:59 UTC10m
2026-05-10 CHH7396 HGH → SZX May 10, 11:25 UTCMay 10, 11:45 UTC20m
2026-05-10 CHH7395 SZX → HGH May 10, 06:35 UTCMay 10, 06:45 UTC10m
2026-05-10 CHH7158 CKG → SZX May 10, 04:34 UTCMay 10, 04:45 UTC10m
2026-05-09 CHH7157 SZX → CKG May 9, 23:40 UTCMay 9, 23:50 UTC10m
2026-05-09 CHH7703 PEK → SZX May 9, 01:50 UTCMay 9, 02:05 UTC15m
2026-05-07 CHH492 BRU → PEK May 7, 19:40 UTCMay 7, 19:55 UTC15m
2026-05-07 CHH492 BRU → PEK May 7, 11:25 UTCMay 7, 17:15 UTC5h 50m
2026-05-06 CHH491 PEK → BRU May 6, 20:40 UTCMay 7, 05:05 UTC8h 25m
2026-05-06 CHH7714 SZX → PEK May 6, 11:30 UTCMay 6, 11:40 UTC10m
2026-05-06 CHH7707 PEK → SZX May 6, 05:50 UTCMay 6, 06:05 UTC15m
2026-05-06 CHH7704 SZX → PEK May 6, 01:20 UTCMay 6, 01:30 UTC10m
2026-05-05 CHH7711 PEK → SZX May 5, 13:50 UTCMay 5, 14:00 UTC10m
2026-05-05 CHH7711 PEK → SZX May 5, 11:30 UTCMay 5, 11:40 UTC10m
2026-05-05 CHH7568 CKG → PEK May 5, 09:20 UTCMay 5, 09:30 UTC10m
2026-05-04 CHH7157 SZX → CKG May 4, 23:15 UTCMay 4, 23:25 UTC10m
2026-05-04 CHH7711 PEK → SZX May 4, 12:20 UTCMay 4, 12:30 UTC10m
2026-05-04 CHH7711 PEK → SZX May 4, 09:50 UTCMay 4, 10:05 UTC15m
2026-05-04 CHH7190 KWE → PEK May 4, 07:30 UTCMay 4, 07:45 UTC15m
2026-05-04 CHH7189 PEK → KWE May 4, 00:50 UTCMay 4, 01:15 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-1341 page for operator, model, and routing details .

Mode-S 7812A0 frequently asked

What is Mode-S code 7812A0?
7812A0 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1341.
Where is Mode-S 7812A0 registered?
Mode-S code 7812A0 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812A0 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812A0, octal 36011240, decimal 7,869,088.
What flights does 7812A0 operate?
Mode-S 7812A0 has broadcast 20 distinct callsigns, including CHH7911, CHH7711, CHH7157, CHH7963, CHH776.