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 10h ago
Flights observed
183
Distinct callsigns
20
Country
CN
Last broadcast
10h 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
CHH755 - 10 2026-07-11
CHH7909 Hainan Airlines 9 2026-06-18
CHH748 Hainan Airlines 8 2026-06-11
CHH7995 Hainan Airlines 7 2026-05-21
CHH756 - 7 2026-07-11
CHH448 Hainan Airlines 7 2026-06-18
CHH447 - 7 2026-06-17
CHH747 Hainan Airlines 6 2026-06-10
CHH7996 Hainan Airlines 5 2026-05-21
CHH7924 Hainan Airlines 5 2026-06-01
CHH7910 Hainan Airlines 5 2026-06-15
CHH473 Hainan Airlines 5 2026-05-22
CHH450 - 4 2026-07-13
CHH792 Hainan Airlines 3 2026-06-22
CHH7809 - 3 2026-07-07
CHH7070 Hainan Airlines 3 2026-04-23
CHH497 - 3 2026-07-05
CHH474 Hainan Airlines 3 2026-05-22
CHH449 - 3 2026-07-13
CHH7923 Hainan Airlines 2 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-10 CHH701 - Jul 10, 10:45 UTCJul 10, 11:00 UTC15m
2026-07-10 CHH7076 - Jul 10, 04:05 UTCJul 10, 04:25 UTC20m
2026-07-09 CHH702 - Jul 9, 12:15 UTCJul 10, 01:40 UTC13h 25m
2026-07-09 CHH701 - Jul 9, 10:30 UTCJul 9, 10:45 UTC15m
2026-07-09 CHH7482 - Jul 9, 01:25 UTCJul 9, 01:40 UTC15m
2026-07-08 CHH7279 - Jul 8, 05:20 UTCJul 8, 08:25 UTC3h 5m
2026-07-07 CHH7809 - Jul 7, 12:00 UTCJul 7, 12:20 UTC20m
2026-07-06 CHH7448 - Jul 6, 14:55 UTCJul 6, 15:25 UTC30m
2026-07-05 CHH756 - Jul 5, 13:30 UTCJul 5, 13:45 UTC15m
2026-07-05 CHH497 - Jul 5, 04:55 UTCJul 5, 12:05 UTC7h 10m
2026-07-05 CHH755 - Jul 5, 02:30 UTCJul 5, 02:50 UTC20m
2026-07-04 CHH756 - Jul 4, 13:10 UTCJul 4, 13:35 UTC25m
2026-07-04 CHH755 - Jul 4, 11:00 UTCJul 4, 11:25 UTC25m
2026-07-03 CHH450 - Jul 3, 12:35 UTCJul 4, 05:55 UTC17h 20m
2026-07-02 CHH449 - Jul 2, 23:35 UTCJul 3, 11:05 UTC11h 30m
2026-07-02 CHH7289 PEK → KWE Jul 2, 00:55 UTCJul 2, 05:30 UTC4h 35m
2026-07-01 CHH7147 - Jul 1, 00:15 UTCJul 1, 00:35 UTC20m
2026-06-30 CHH6218 XIY → PEK Jun 30, 12:45 UTCJun 30, 13:10 UTC25m
2026-06-30 CHH6217 - Jun 30, 08:15 UTCJun 30, 08:35 UTC20m
2026-06-29 CHH405 - Jun 29, 23:34 UTCJun 29, 23:44 UTC10m
2026-06-29 CHH7714 - Jun 29, 11:50 UTCJun 29, 12:00 UTC10m
2026-06-29 CHH7156 - Jun 29, 07:30 UTCJun 29, 07:59 UTC30m
2026-06-29 CHH7155 - Jun 29, 02:25 UTCJun 29, 02:35 UTC10m
2026-06-29 CHH7398 - Jun 29, 00:10 UTCJun 29, 00:29 UTC20m
2026-06-28 CHH7772 - Jun 28, 14:09 UTCJun 28, 14:30 UTC20m
2026-06-27 CHH7734 - Jun 27, 18:09 UTCJun 27, 18:20 UTC10m
2026-06-27 CHH7733 - Jun 27, 11:50 UTCJun 27, 11:59 UTC10m
2026-06-27 CHH7630 - Jun 27, 05:29 UTCJun 27, 05:44 UTC15m
2026-06-27 CHH7629 - Jun 27, 03:55 UTCJun 27, 04:19 UTC25m
2026-06-27 CHH7769 - Jun 27, 00:29 UTCJun 27, 00:39 UTC10m
2026-06-26 CHH6206 - Jun 26, 18:24 UTCJun 26, 19:30 UTC1h 5m
2026-06-26 CHH6205 - Jun 26, 09:24 UTCJun 26, 09:39 UTC15m
2026-06-26 CHH7175 - Jun 26, 00:05 UTCJun 26, 00:15 UTC10m
2026-06-25 CHH6206 - Jun 25, 19:05 UTCJun 25, 19:24 UTC20m
2026-06-25 CHH6205 - Jun 25, 09:29 UTCJun 25, 09:40 UTC10m
2026-06-25 CHH7768 - Jun 25, 07:09 UTCJun 25, 07:19 UTC10m
2026-06-25 CHH7767 - Jun 25, 01:54 UTCJun 25, 02:19 UTC25m
2026-06-25 CHH7767 - Jun 25, 01:14 UTCJun 25, 01:24 UTC10m
2026-06-24 CHH7734 - Jun 24, 17:25 UTCJun 24, 17:34 UTC10m
2026-06-24 CHH7733 - Jun 24, 12:25 UTCJun 24, 12:34 UTC10m
2026-06-24 CHH7770 - Jun 24, 09:39 UTCJun 24, 10:04 UTC25m
2026-06-24 CHH7630 - Jun 24, 05:40 UTCJun 24, 05:49 UTC10m
2026-06-24 CHH7629 - Jun 24, 04:00 UTCJun 24, 04:24 UTC25m
2026-06-24 CHH7769 - Jun 24, 00:05 UTCJun 24, 00:20 UTC15m
2026-06-23 CHH7391 SZX → HGH Jun 23, 10:19 UTCJun 23, 10:29 UTC10m

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 10h 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 CHH755, CHH7909, CHH748, CHH7995, CHH756.