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sensors Mode-S transponder

7813A3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1101 · BOEING 737-800

Hex
7813A3
Octal
36011643
Decimal
7,869,347
Country
CN
Tail
B-1101
Type
B738
No current signal · last broadcast 17h ago
Flights observed
72
Distinct callsigns
20
Country
CN
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 7813A3.

Country allocation

The ICAO 24-bit address 7813A3 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
CHH7834 Hainan Airlines 3 2026-06-12
CHH7833 Hainan Airlines 3 2026-06-12
CHH7746 - 3 2026-07-05
CHH7851 Hainan Airlines 2 2026-05-12
CHH7760 - 2 2026-07-06
CHH7752 - 2 2026-07-12
CHH7737 - 2 2026-07-08
CHH7734 - 2 2026-07-12
CHH7733 - 2 2026-07-12
CHH7320 Hainan Airlines 2 2026-04-23
CHH7276 - 2 2026-07-08
CHH7275 - 2 2026-07-08
CHH7043 Hainan Airlines 2 2026-05-28
CHH7870 - 1 2026-07-10
CHH7869 - 1 2026-07-11
CHH7815 Hainan Airlines 1 2026-06-02
CHH7774 Hainan Airlines 1 2026-07-09
CHH7766 - 1 2026-07-13
CHH7762 - 1 2026-07-06
CHH7761 - 1 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CHH7026 - Jul 13, 13:35 UTCJul 13, 13:45 UTC10m
2026-07-13 CHH7766 - Jul 13, 11:55 UTCJul 13, 12:05 UTC10m
2026-07-12 CHH7734 - Jul 12, 16:50 UTCJul 12, 17:10 UTC20m
2026-07-12 CHH7733 - Jul 12, 11:45 UTCJul 12, 11:55 UTC10m
2026-07-12 CHH7752 - Jul 12, 03:55 UTCJul 12, 04:05 UTC10m
2026-07-11 CHH7869 - Jul 11, 05:45 UTCJul 11, 06:01 UTC15m
2026-07-10 CHH7870 - Jul 10, 23:55 UTCJul 11, 00:05 UTC10m
2026-07-10 CHH7734 - Jul 10, 17:00 UTCJul 10, 17:15 UTC15m
2026-07-10 CHH7733 - Jul 10, 11:55 UTCJul 10, 12:05 UTC10m
2026-07-10 CHH7732 - Jul 10, 10:10 UTCJul 10, 10:30 UTC20m
2026-07-09 CHH7774 KWE → SZX Jul 9, 19:35 UTCJul 9, 19:50 UTC15m
2026-07-09 CHH7376 - Jul 9, 12:10 UTCJul 9, 12:20 UTC10m
2026-07-09 CHH7375 - Jul 9, 06:20 UTCJul 9, 06:30 UTC10m
2026-07-08 CHH7737 - Jul 8, 23:05 UTCJul 8, 23:15 UTC10m
2026-07-08 CHH7276 - Jul 8, 16:10 UTCJul 8, 16:20 UTC10m
2026-07-08 CHH7275 - Jul 8, 06:50 UTCJul 8, 07:00 UTC10m
2026-07-08 CHH7752 - Jul 8, 05:05 UTCJul 8, 05:15 UTC10m
2026-07-07 CHH7751 SZX → CTU Jul 7, 23:00 UTCJul 7, 23:10 UTC10m
2026-07-07 CHH7276 - Jul 7, 19:20 UTCJul 7, 19:30 UTC10m
2026-07-07 CHH7275 - Jul 7, 13:30 UTCJul 7, 13:40 UTC10m
2026-07-07 CHH7738 NNY → SZX Jul 7, 06:40 UTCJul 7, 06:50 UTC10m
2026-07-06 CHH7737 - Jul 6, 23:15 UTCJul 6, 23:25 UTC10m
2026-07-06 CHH7760 - Jul 6, 17:35 UTCJul 6, 18:00 UTC25m
2026-07-06 CHH7760 - Jul 6, 10:20 UTCJul 6, 15:15 UTC4h 55m
2026-07-06 CHH7759 - Jul 6, 08:05 UTCJul 6, 08:15 UTC10m
2026-07-06 CHH7762 - Jul 6, 06:00 UTCJul 6, 06:10 UTC10m
2026-07-05 CHH7761 - Jul 5, 23:25 UTCJul 5, 23:35 UTC10m
2026-07-05 CHH7746 - Jul 5, 14:35 UTCJul 5, 14:55 UTC20m
2026-07-05 CHH7746 - Jul 5, 09:40 UTCJul 5, 09:55 UTC15m
2026-07-05 CHH7746 - Jul 5, 08:50 UTCJul 5, 09:00 UTC10m
2026-07-05 CHH7745 - Jul 5, 02:45 UTCJul 5, 02:55 UTC10m
2026-07-05 CHH7558 - Jul 5, 00:45 UTCJul 5, 01:00 UTC15m
2026-06-30 CHH7388 KHN → SYX Jun 30, 15:55 UTCJul 1, 12:55 UTC21h 0m
2026-06-30 CHH7308 - Jun 30, 00:30 UTCJun 30, 16:05 UTC15h 36m
2026-06-29 CHH7741 - Jun 29, 03:54 UTCJun 29, 04:04 UTC10m
2026-06-23 CHH7340 CKG → SYX Jun 23, 01:35 UTCJun 23, 02:15 UTC40m
2026-06-22 CHH7371 HAK → CKG Jun 22, 07:04 UTCJun 22, 07:14 UTC10m
2026-06-22 CHH7370 - Jun 22, 00:29 UTCJun 22, 03:54 UTC3h 25m
2026-06-21 CHH7037 - Jun 21, 09:59 UTCJun 21, 14:24 UTC4h 25m
2026-06-19 CHH7572 CKG → HAK Jun 19, 09:30 UTCJun 19, 09:44 UTC15m
2026-06-12 CHH7834 TSN → URC Jun 12, 11:40 UTCJun 12, 12:05 UTC25m
2026-06-12 CHH7833 URC → TSN Jun 12, 09:25 UTCJun 12, 09:45 UTC20m
2026-06-10 CHH7171 HAK → CKG Jun 10, 06:40 UTCJun 11, 00:05 UTC17h 25m
2026-06-08 CHH7834 TSN → URC Jun 8, 11:15 UTCJun 8, 11:25 UTC10m
2026-06-08 CHH7833 URC → TSN Jun 8, 08:55 UTCJun 8, 09:25 UTC30m
2026-06-06 CHH7374 HFE → SYX Jun 6, 13:39 UTCJun 6, 14:00 UTC20m
2026-06-05 CHH7312 KHN → SYX Jun 5, 01:50 UTCJun 5, 11:55 UTC10h 5m
2026-06-04 CHH7562 CGO → SYX Jun 4, 02:50 UTCJun 4, 14:45 UTC11h 55m
2026-06-02 CHH7815 PEK → CAN Jun 2, 12:45 UTCJun 2, 12:55 UTC10m
2026-06-02 CHH7079 PEK → SYX Jun 2, 03:25 UTCJun 2, 03:50 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-1101 page for operator, model, and routing details .

Mode-S 7813A3 frequently asked

What is Mode-S code 7813A3?
7813A3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1101.
Where is Mode-S 7813A3 registered?
Mode-S code 7813A3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7813A3 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7813A3, octal 36011643, decimal 7,869,347.
What flights does 7813A3 operate?
Mode-S 7813A3 has broadcast 20 distinct callsigns, including CHH7834, CHH7833, CHH7746, CHH7851, CHH7760.