Apparatus

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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 3h ago
Flights observed
80
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

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
CHH7995 Hainan Airlines 7 2026-05-21
CHH748 Hainan Airlines 6 2026-05-24
CHH7996 Hainan Airlines 5 2026-05-21
CHH747 Hainan Airlines 5 2026-05-24
CHH473 Hainan Airlines 5 2026-05-22
CHH7909 Hainan Airlines 4 2026-05-14
CHH7910 Hainan Airlines 3 2026-05-15
CHH7070 Hainan Airlines 3 2026-04-23
CHH474 Hainan Airlines 3 2026-05-22
CHH448 Hainan Airlines 3 2026-05-14
CHH7809 Hainan Airlines 2 2026-04-28
CHH7367 Hainan Airlines 2 2026-05-20
CHH7235 Hainan Airlines 2 2026-05-20
CHH450 Hainan Airlines 2 2026-04-22
CHH447 Hainan Airlines 2 2026-05-13
CHH430 Hainan Airlines 2 2026-05-25
CHH429 Hainan Airlines 2 2026-05-25
CHH7924 Hainan Airlines 1 2026-05-26
CHH7923 Hainan Airlines 1 2026-05-25
CHH7722 Hainan Airlines 1 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CHH7340 CKG → SYX May 30, 01:40 UTCMay 30, 02:06 UTC26m
2026-05-26 CHH7924 KUL → CKG May 26, 06:29 UTCMay 26, 06:44 UTC15m
2026-05-25 CHH7923 CKG → KUL May 25, 13:35 UTCMay 26, 04:39 UTC15h 5m
2026-05-25 CHH430 BKK → PEK May 25, 07:10 UTCMay 25, 08:10 UTC1h 0m
2026-05-25 CHH429 PEK → BKK May 25, 03:55 UTCMay 25, 04:55 UTC1h 0m
2026-05-24 CHH748 SIN → HAK May 24, 04:15 UTCMay 24, 04:30 UTC15m
2026-05-24 CHH747 HAK → SIN May 24, 02:00 UTCMay 24, 02:35 UTC35m
2026-05-22 CHH474 KIX → PEK May 22, 05:35 UTCMay 22, 23:55 UTC18h 20m
2026-05-22 CHH473 PEK → KIX May 22, 02:00 UTCMay 22, 03:35 UTC1h 35m
2026-05-22 CHH473 PEK → KIX May 22, 01:00 UTCMay 22, 01:10 UTC10m
2026-05-21 CHH7996 BKK → PEK May 21, 17:45 UTCMay 21, 18:00 UTC15m
2026-05-21 CHH7995 PEK → BKK May 21, 15:40 UTCMay 21, 16:05 UTC25m
2026-05-20 CHH7367 PEK → CKG May 20, 13:45 UTCMay 20, 14:00 UTC15m
2026-05-20 CHH7236 CSX → PEK May 20, 09:30 UTCMay 20, 09:40 UTC10m
2026-05-20 CHH7235 CAN → CGO May 20, 03:15 UTCMay 20, 03:30 UTC15m
2026-05-19 CHH7714 SZX → PEK May 19, 11:20 UTCMay 19, 11:30 UTC10m
2026-05-19 CHH7722 PVG → SZX May 19, 09:00 UTCMay 19, 09:20 UTC20m
2026-05-18 CHH748 SIN → HAK May 18, 04:20 UTCMay 18, 04:30 UTC10m
2026-05-17 CHH747 HAK → SIN May 17, 09:45 UTCMay 18, 02:45 UTC17h 0m
2026-05-16 CHH7688 NGB → HAK May 16, 23:45 UTCMay 17, 10:00 UTC10h 15m
2026-05-15 CHH7910 SIN → HAK May 15, 20:50 UTCMay 15, 21:15 UTC25m
2026-05-14 CHH448 HAK → TYN May 14, 20:50 UTCMay 14, 21:05 UTC15m
2026-05-14 CHH7909 HAK → SIN May 14, 18:30 UTCMay 14, 18:50 UTC20m
2026-05-13 CHH7910 SIN → HAK May 13, 20:45 UTCMay 13, 21:10 UTC25m
2026-05-13 CHH447 HAK → SYD May 13, 18:25 UTCMay 13, 18:35 UTC10m
2026-05-12 CHH448 HAK → TYN May 12, 20:55 UTCMay 13, 18:35 UTC21h 40m
2026-05-12 CHH7909 HAK → SIN May 12, 18:10 UTCMay 12, 18:30 UTC20m
2026-05-11 CHH7910 SIN → HAK May 11, 21:25 UTCMay 12, 18:30 UTC21h 5m
2026-05-10 CHH748 SIN → HAK May 10, 04:25 UTCMay 10, 15:45 UTC11h 20m
2026-05-10 CHH747 HAK → SIN May 10, 02:10 UTCMay 10, 02:30 UTC20m
2026-05-09 CHH747 HAK → SIN May 9, 04:35 UTCMay 10, 02:30 UTC21h 55m
2026-05-08 CHH756 KUL → HAK May 8, 13:30 UTCMay 8, 13:45 UTC15m
2026-05-08 CHH755 HAK → KUL May 8, 11:25 UTCMay 8, 11:49 UTC25m
2026-05-06 CHH7082 PEK → HAK May 6, 11:25 UTCMay 6, 11:35 UTC10m
2026-05-06 CHH474 KIX → PEK May 6, 05:40 UTCMay 6, 07:01 UTC1h 20m
2026-05-06 CHH473 PEK → KIX May 6, 02:01 UTCMay 6, 03:05 UTC1h 4m
2026-05-06 CHH473 PEK → KIX May 6, 01:01 UTCMay 6, 01:10 UTC10m
2026-05-05 CHH7996 BKK → PEK May 5, 17:55 UTCMay 5, 18:15 UTC20m
2026-05-05 CHH7995 PEK → BKK May 5, 15:20 UTCMay 5, 15:40 UTC20m
2026-05-05 CHH7995 PEK → BKK May 5, 11:25 UTCMay 5, 11:35 UTC10m
2026-05-05 CHH7196 FOC → PEK May 5, 07:25 UTCMay 5, 07:35 UTC10m
2026-05-04 CHH7996 BKK → PEK May 4, 18:15 UTCMay 4, 18:45 UTC31m
2026-05-04 CHH7995 PEK → BKK May 4, 11:15 UTCMay 4, 15:45 UTC4h 30m
2026-05-04 CHH474 KIX → PEK May 4, 06:40 UTCMay 4, 08:05 UTC1h 25m
2026-05-04 CHH473 PEK → KIX May 4, 02:00 UTCMay 4, 03:09 UTC1h 10m
2026-05-02 CHH7282 PEK → HAK May 2, 13:15 UTCMay 2, 13:30 UTC15m
2026-05-02 CHH7235 CAN → CGO May 2, 03:05 UTCMay 2, 03:20 UTC15m
2026-05-01 CHH7377 PEK → HGH May 1, 14:35 UTCMay 1, 14:50 UTC15m
2026-05-01 CHH7188 WUH → PEK May 1, 12:30 UTCMay 1, 12:40 UTC10m
2026-05-01 CHH7187 PEK → WUH May 1, 00:50 UTCMay 1, 01:05 UTC15m

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 3h ago.
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 CHH7995, CHH748, CHH7996, CHH747, CHH473.