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sensors Mode-S transponder

7813A2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1100 · BOEING 737 MAX 8

Hex
7813A2
Octal
36011642
Decimal
7,869,346
Country
CN
Tail
B-1100
Type
B38M
No current signal · last broadcast Jul 26, 13:15 UTC
Flights observed
228
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:15 UTC

Last known position

Most recent position reported by Mode-S 7813A2.

Country allocation

The ICAO 24-bit address 7813A2 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
CHH755 - 11 2026-07-16
CHH7909 Hainan Airlines 9 2026-06-18
CHH756 - 8 2026-07-16
CHH748 Hainan Airlines 8 2026-06-11
CHH7995 Hainan Airlines 7 2026-05-21
CHH7924 Hainan Airlines 7 2026-07-21
CHH448 Hainan Airlines 7 2026-06-18
CHH447 - 7 2026-06-17
CHH7769 - 6 2026-07-23
CHH747 Hainan Airlines 6 2026-06-10
CHH7996 Hainan Airlines 5 2026-05-21
CHH7910 Hainan Airlines 5 2026-06-15
CHH7734 Hainan Airlines 5 2026-07-22
CHH7733 - 5 2026-07-22
CHH7630 Hainan Airlines 5 2026-07-23
CHH7629 Hainan Airlines 5 2026-07-23
CHH473 Hainan Airlines 5 2026-05-22
CHH450 - 5 2026-07-15
CHH7770 - 4 2026-07-23
CHH449 - 4 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHH7713 PEK → SZX Jul 26, 13:05 UTCJul 26, 13:15 UTC10m
2026-07-26 CHH7808 CAN → PEK Jul 26, 07:55 UTCJul 26, 08:05 UTC10m
2026-07-26 CHH7801 PEK → CAN Jul 26, 00:45 UTCJul 26, 01:05 UTC20m
2026-07-25 CHH7238 XIY → PEK Jul 25, 08:40 UTCJul 25, 09:10 UTC30m
2026-07-25 CHH7237 PEK → XIY Jul 25, 04:40 UTCJul 25, 05:15 UTC35m
2026-07-24 CHH7772 - Jul 24, 11:45 UTCJul 24, 12:30 UTC45m
2026-07-24 CHH7771 - Jul 24, 08:05 UTCJul 24, 08:15 UTC10m
2026-07-24 CHH7175 SZX → TFU Jul 24, 00:30 UTCJul 24, 00:40 UTC10m
2026-07-23 CHH7256 NKG → SZX Jul 23, 15:55 UTCJul 23, 16:20 UTC25m
2026-07-23 CHH7255 SZX → NKG Jul 23, 11:15 UTCJul 23, 11:25 UTC10m
2026-07-23 CHH7770 - Jul 23, 09:30 UTCJul 23, 09:55 UTC25m
2026-07-23 CHH7630 XNT → HAK Jul 23, 05:35 UTCJul 23, 05:45 UTC10m
2026-07-23 CHH7629 XNT → HRB Jul 23, 03:25 UTCJul 23, 04:10 UTC45m
2026-07-23 CHH7769 - Jul 23, 00:00 UTCJul 23, 00:45 UTC45m
2026-07-22 CHH7734 CGO → SZX Jul 22, 17:50 UTCJul 22, 18:05 UTC15m
2026-07-22 CHH7733 - Jul 22, 11:50 UTCJul 22, 12:00 UTC10m
2026-07-21 CHH7769 - Jul 21, 23:55 UTCJul 22, 00:30 UTC35m
2026-07-21 CHH6336 - Jul 21, 17:40 UTCJul 21, 17:50 UTC10m
2026-07-21 CHH7924 KUL → CKG Jul 21, 09:25 UTCJul 21, 09:50 UTC25m
2026-07-21 CHH7924 KUL → CKG Jul 21, 06:45 UTCJul 21, 07:05 UTC20m
2026-07-21 CHH7923 CKG → KUL Jul 21, 01:25 UTCJul 21, 04:35 UTC3h 10m
2026-07-20 CHH7557 - Jul 20, 15:00 UTCJul 20, 15:15 UTC15m
2026-07-20 CHH7396 - Jul 20, 13:10 UTCJul 20, 13:50 UTC40m
2026-07-20 CHH7767 SZX → KMG Jul 20, 01:40 UTCJul 20, 01:55 UTC15m
2026-07-19 CHH7734 CGO → SZX Jul 19, 17:40 UTCJul 19, 17:50 UTC10m
2026-07-19 CHH7733 - Jul 19, 11:45 UTCJul 19, 11:55 UTC10m
2026-07-19 CHH7770 - Jul 19, 08:20 UTCJul 19, 08:35 UTC15m
2026-07-19 CHH7630 - Jul 19, 05:35 UTCJul 19, 05:45 UTC10m
2026-07-19 CHH7629 - Jul 19, 04:00 UTCJul 19, 04:20 UTC20m
2026-07-18 CHH7769 - Jul 18, 23:45 UTCJul 19, 00:25 UTC40m
2026-07-18 CHH7734 CGO → SZX Jul 18, 17:10 UTCJul 18, 17:25 UTC15m
2026-07-18 CHH7733 - Jul 18, 11:50 UTCJul 18, 12:00 UTC10m
2026-07-18 CHH7770 - Jul 18, 09:30 UTCJul 18, 09:40 UTC10m
2026-07-18 CHH7630 - Jul 18, 05:30 UTCJul 18, 05:40 UTC10m
2026-07-18 CHH7629 - Jul 18, 03:55 UTCJul 18, 04:10 UTC15m
2026-07-18 CHH7769 - Jul 18, 00:04 UTCJul 18, 00:15 UTC10m
2026-07-17 CHH7256 - Jul 17, 15:40 UTCJul 17, 16:04 UTC25m
2026-07-17 CHH7255 - Jul 17, 10:40 UTCJul 17, 10:50 UTC10m
2026-07-17 CHH7722 - Jul 17, 08:04 UTCJul 17, 08:15 UTC10m
2026-07-17 CHH7721 - Jul 17, 01:29 UTCJul 17, 01:39 UTC10m
2026-07-16 CHH7023 - Jul 16, 23:15 UTCJul 16, 23:35 UTC20m
2026-07-16 CHH756 - Jul 16, 13:54 UTCJul 16, 14:10 UTC15m
2026-07-16 CHH755 - Jul 16, 12:05 UTCJul 16, 12:34 UTC30m
2026-07-15 CHH450 - Jul 15, 13:40 UTCJul 15, 16:30 UTC2h 50m
2026-07-15 CHH449 - Jul 15, 09:15 UTCJul 15, 12:25 UTC3h 10m
2026-07-13 CHH450 - Jul 13, 12:45 UTCJul 14, 06:50 UTC18h 5m
2026-07-13 CHH449 - Jul 13, 04:45 UTCJul 13, 11:10 UTC6h 25m
2026-07-11 CHH756 - Jul 11, 13:25 UTCJul 11, 13:45 UTC20m
2026-07-11 CHH755 - Jul 11, 11:20 UTCJul 11, 11:45 UTC25m
2026-07-10 CHH702 - Jul 10, 12:50 UTCJul 10, 14:25 UTC1h 35m

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-1100 page for operator, model, and routing details .

Mode-S 7813A2 frequently asked

What is Mode-S code 7813A2?
7813A2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1100.
Where is Mode-S 7813A2 registered?
Mode-S code 7813A2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7813A2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7813A2, octal 36011642, decimal 7,869,346.
What flights does 7813A2 operate?
Mode-S 7813A2 has broadcast 20 distinct callsigns, including CHH755, CHH7909, CHH756, CHH748, CHH7995.