Apparatus

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sensors Mode-S transponder

7810B1

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-3243 · EMBRAER ERJ-190-200

Hex
7810B1
Octal
36010261
Decimal
7,868,593
Country
CN
Tail
B-3243
Type
E195
No current signal · last broadcast Jul 25, 02:15 UTC
Flights observed
81
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 02:15 UTC

Last known position

Most recent position reported by Mode-S 7810B1.

Country allocation

The ICAO 24-bit address 7810B1 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
GCR7993 - 12 2026-06-15
GCR7994 Tianjin Airlines 11 2026-06-15
GCR7674 - 7 2026-06-27
GCR6532 Tianjin Airlines 6 2026-07-21
GCR6531 Tianjin Airlines 6 2026-07-25
GCR7829 - 4 2026-05-14
GCR6534 Tianjin Airlines 4 2026-07-23
GCR6533 Tianjin Airlines 3 2026-07-22
GCR7929 Tianjin Airlines 2 2026-06-11
GCR7830 - 2 2026-05-14
GCR7780 - 2 2026-07-23
GCR7779 Tianjin Airlines 2 2026-07-23
GCR6413 Tianjin Airlines 2 2026-06-12
GCR7930 Tianjin Airlines 1 2026-06-11
GCR7832 Tianjin Airlines 1 2026-04-29
GCR7797 - 1 2026-06-11
GCR7738 - 1 2026-07-19
GCR7709 - 1 2026-07-10
GCR7673 Tianjin Airlines 1 2026-06-06
GCR7601 Tianjin Airlines 1 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 GCR6531 HAK → HUZ Jul 25, 02:05 UTCJul 25, 02:15 UTC10m
2026-07-23 GCR6534 ZUH → HAK Jul 23, 23:50 UTCJul 24, 00:00 UTC10m
2026-07-23 GCR7780 - Jul 23, 15:00 UTCJul 23, 15:15 UTC15m
2026-07-23 GCR7779 HUZ → SYX Jul 23, 11:10 UTCJul 23, 11:20 UTC10m
2026-07-23 - - Jul 23, 00:20 UTCJul 23, 00:30 UTC10m
2026-07-22 - - Jul 22, 01:50 UTCJul 22, 02:00 UTC10m
2026-07-22 GCR6533 HAK → ZUH Jul 22, 00:15 UTCJul 22, 00:30 UTC15m
2026-07-21 GCR6532 HUZ → HAK Jul 21, 04:15 UTCJul 21, 04:30 UTC15m
2026-07-21 GCR6531 HAK → HUZ Jul 21, 02:05 UTCJul 21, 02:20 UTC15m
2026-07-19 GCR6534 ZUH → HAK Jul 19, 23:50 UTCJul 20, 00:10 UTC20m
2026-07-19 GCR7780 - Jul 19, 14:30 UTCJul 19, 14:45 UTC15m
2026-07-19 GCR7779 - Jul 19, 11:05 UTCJul 19, 11:25 UTC20m
2026-07-19 GCR7738 - Jul 19, 05:50 UTCJul 19, 06:00 UTC10m
2026-07-16 GCR6533 HAK → ZUH Jul 16, 23:59 UTCJul 17, 00:10 UTC10m
2026-07-14 GCR6534 - Jul 14, 12:05 UTCJul 14, 12:20 UTC15m
2026-07-14 GCR6566 - Jul 14, 08:05 UTCJul 14, 08:20 UTC15m
2026-07-10 GCR6532 - Jul 10, 14:20 UTCJul 10, 14:40 UTC20m
2026-07-10 GCR7709 - Jul 10, 08:30 UTCJul 10, 08:45 UTC15m
2026-07-10 GCR6531 - Jul 10, 07:00 UTCJul 10, 07:20 UTC20m
2026-07-05 GCR6532 - Jul 5, 15:20 UTCJul 5, 15:40 UTC20m
2026-07-01 GCR6662 - Jul 1, 09:40 UTCJul 1, 09:55 UTC15m
2026-07-01 GCR6661 - Jul 1, 04:50 UTCJul 1, 05:00 UTC10m
2026-06-30 GCR6664 - Jun 30, 07:45 UTCJun 30, 07:55 UTC10m
2026-06-30 GCR6663 - Jun 30, 04:35 UTCJun 30, 04:45 UTC10m
2026-06-27 GCR7674 - Jun 27, 06:59 UTCJun 27, 07:10 UTC10m
2026-06-25 GCR7674 - Jun 25, 08:20 UTCJun 25, 08:30 UTC10m
2026-06-24 GCR7674 - Jun 24, 06:39 UTCJun 24, 06:50 UTC10m
2026-06-15 GCR7994 ICN → TSN Jun 15, 05:10 UTCJun 15, 05:30 UTC20m
2026-06-15 GCR7993 - Jun 15, 02:24 UTCJun 15, 02:50 UTC25m
2026-06-14 GCR7994 ICN → TSN Jun 14, 05:00 UTCJun 14, 05:25 UTC25m
2026-06-14 GCR7993 - Jun 14, 02:20 UTCJun 14, 02:35 UTC15m
2026-06-12 GCR6413 HET → TSN Jun 12, 15:40 UTCJun 12, 15:55 UTC15m
2026-06-12 GCR7994 ICN → TSN Jun 12, 05:40 UTCJun 12, 06:05 UTC25m
2026-06-12 GCR7993 TSN → ICN Jun 12, 02:05 UTCJun 12, 02:25 UTC20m
2026-06-11 GCR7797 - Jun 11, 05:30 UTCJun 11, 05:50 UTC20m
2026-06-11 GCR7930 KWE → TSN Jun 11, 03:15 UTCJun 11, 03:35 UTC20m
2026-06-11 GCR7929 TSN → KWE Jun 11, 01:05 UTCJun 11, 01:20 UTC15m
2026-06-10 GCR7994 ICN → TSN Jun 10, 05:20 UTCJun 10, 05:40 UTC20m
2026-06-10 GCR7993 TSN → ICN Jun 10, 02:15 UTCJun 10, 02:30 UTC15m
2026-06-08 GCR7601 WMT → HAK Jun 8, 04:15 UTCJun 8, 04:40 UTC25m
2026-06-06 GCR7674 XIY → TSN Jun 6, 11:35 UTCJun 6, 11:45 UTC10m
2026-06-06 GCR7673 TSN → XIY Jun 6, 09:00 UTCJun 6, 09:15 UTC15m
2026-06-05 GCR7674 XIY → TSN Jun 5, 07:30 UTCJun 5, 07:45 UTC15m
2026-06-03 GCR7545 ZYI → SYX Jun 3, 03:20 UTCJun 3, 06:15 UTC2h 55m
2026-06-01 GCR7674 XIY → TSN Jun 1, 06:25 UTCJun 1, 06:35 UTC10m
2026-05-30 GCR7674 XIY → TSN May 30, 06:35 UTCMay 30, 06:45 UTC10m
2026-05-21 GCR6413 HET → TSN May 21, 12:20 UTCMay 21, 12:45 UTC25m
2026-05-21 GCR6414 TSN → HET May 21, 06:00 UTCMay 21, 06:20 UTC20m
2026-05-21 GCR7929 TSN → KWE May 21, 03:45 UTCMay 21, 04:05 UTC20m
2026-05-20 GCR7994 ICN → TSN May 20, 05:05 UTCMay 20, 05:30 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-3243 page for operator, model, and routing details .

Mode-S 7810B1 frequently asked

What is Mode-S code 7810B1?
7810B1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-3243.
Where is Mode-S 7810B1 registered?
Mode-S code 7810B1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7810B1 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 02:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7810B1, octal 36010261, decimal 7,868,593.
What flights does 7810B1 operate?
Mode-S 7810B1 has broadcast 20 distinct callsigns, including GCR7993, GCR7994, GCR7674, GCR6532, GCR6531.