Apparatus

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sensors Mode-S transponder

7813A1

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1098 · AIRBUS A-330-300

Hex
7813A1
Octal
36011641
Decimal
7,869,345
Country
CN
Tail
B-1098
Type
A333
No current signal · last broadcast 3h ago
Flights observed
178
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 7813A1.

Country allocation

The ICAO 24-bit address 7813A1 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
CHH752 - 21 2026-07-01
CHH751 - 18 2026-06-30
CHH754 Hainan Airlines 17 2026-07-09
CHH753 - 12 2026-07-13
CHH7966 Hainan Airlines 10 2026-06-05
CHH765 - 10 2026-06-21
CHH766 - 9 2026-06-22
CHH7965 Hainan Airlines 6 2026-06-04
CHH7701 - 5 2026-06-26
CHH7986 Hainan Airlines 4 2026-05-10
CHH7938 Hainan Airlines 4 2026-05-22
CHH7277 - 4 2026-07-10
CHH7937 Hainan Airlines 3 2026-05-21
CHH7706 Hainan Airlines 3 2026-05-29
CHH7245 - 3 2026-07-12
CHH7182 - 3 2026-06-21
CHH7985 Hainan Airlines 2 2026-05-10
CHH7970 - 2 2026-07-07
CHH7969 - 2 2026-07-06
CHH7714 Hainan Airlines 2 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CHH753 - Jul 13, 23:00 UTCJul 14, 05:40 UTC6h 40m
2026-07-13 CHH753 - Jul 13, 19:40 UTCJul 13, 19:50 UTC10m
2026-07-13 CHH7279 - Jul 13, 05:20 UTCJul 13, 05:35 UTC15m
2026-07-12 CHH7246 - Jul 12, 14:55 UTCJul 12, 15:15 UTC20m
2026-07-12 CHH7245 - Jul 12, 06:45 UTCJul 12, 07:05 UTC20m
2026-07-11 CHH7848 - Jul 11, 17:25 UTCJul 11, 17:40 UTC15m
2026-07-11 CHH7847 - Jul 11, 10:25 UTCJul 11, 16:40 UTC6h 15m
2026-07-10 CHH7245 - Jul 10, 08:10 UTCJul 10, 08:30 UTC20m
2026-07-10 CHH7277 - Jul 10, 00:25 UTCJul 10, 00:40 UTC15m
2026-07-09 CHH754 MAN → PEK Jul 9, 20:30 UTCJul 9, 20:50 UTC20m
2026-07-09 CHH754 MAN → PEK Jul 9, 11:25 UTCJul 9, 18:00 UTC6h 35m
2026-07-08 CHH753 - Jul 8, 23:00 UTCJul 9, 06:00 UTC7h 0m
2026-07-08 CHH753 PEK → MAN Jul 8, 19:45 UTCJul 8, 19:55 UTC10m
2026-07-08 CHH7267 - Jul 8, 09:50 UTCJul 8, 10:05 UTC15m
2026-07-07 CHH6213 - Jul 7, 23:40 UTCJul 7, 23:55 UTC15m
2026-07-07 CHH7970 - Jul 7, 17:45 UTCJul 7, 18:05 UTC20m
2026-07-07 CHH7970 - Jul 7, 09:10 UTCJul 7, 14:45 UTC5h 35m
2026-07-06 CHH7969 - Jul 6, 22:50 UTCJul 7, 05:25 UTC6h 35m
2026-07-06 CHH7969 - Jul 6, 19:55 UTCJul 6, 20:05 UTC10m
2026-07-06 CHH7603 - Jul 6, 01:05 UTCJul 6, 01:15 UTC10m
2026-07-05 CHH754 MAN → PEK Jul 5, 20:55 UTCJul 5, 21:10 UTC15m
2026-07-05 CHH754 MAN → PEK Jul 5, 11:45 UTCJul 5, 18:20 UTC6h 35m
2026-07-04 CHH753 PEK → MAN Jul 4, 23:10 UTCJul 5, 06:20 UTC7h 10m
2026-07-04 CHH753 PEK → MAN Jul 4, 20:00 UTCJul 4, 20:10 UTC10m
2026-07-04 CHH7708 - Jul 4, 10:45 UTCJul 4, 11:05 UTC20m
2026-07-04 CHH7708 - Jul 4, 08:25 UTCJul 4, 08:35 UTC10m
2026-07-04 CHH7703 - Jul 4, 04:35 UTCJul 4, 04:45 UTC10m
2026-07-04 CHH7703 - Jul 4, 01:50 UTCJul 4, 02:10 UTC20m
2026-07-03 CHH754 MAN → PEK Jul 3, 20:30 UTCJul 3, 20:45 UTC15m
2026-07-03 CHH754 MAN → PEK Jul 3, 11:40 UTCJul 3, 18:00 UTC6h 20m
2026-07-02 CHH753 PEK → MAN Jul 2, 19:20 UTCJul 3, 05:55 UTC10h 35m
2026-07-02 CHH7277 - Jul 2, 00:25 UTCJul 2, 00:40 UTC15m
2026-07-01 CHH752 - Jul 1, 20:15 UTCJul 1, 20:30 UTC15m
2026-07-01 CHH752 - Jul 1, 11:15 UTCJul 1, 17:45 UTC6h 30m
2026-06-30 CHH751 - Jun 30, 19:35 UTCJul 1, 06:00 UTC10h 25m
2026-06-30 CHH7277 - Jun 30, 01:50 UTCJun 30, 02:00 UTC10m
2026-06-29 CHH752 - Jun 29, 22:19 UTCJun 29, 22:39 UTC20m
2026-06-29 CHH752 - Jun 29, 13:19 UTCJun 29, 19:49 UTC6h 30m
2026-06-29 CHH751 - Jun 29, 00:00 UTCJun 29, 07:15 UTC7h 15m
2026-06-28 CHH7608 SHA → PEK Jun 28, 13:04 UTCJun 28, 13:14 UTC10m
2026-06-27 CHH754 MAN → PEK Jun 27, 20:49 UTCJun 27, 21:04 UTC15m
2026-06-27 CHH754 MAN → PEK Jun 27, 11:39 UTCJun 27, 18:15 UTC6h 35m
2026-06-26 CHH753 PEK → MAN Jun 26, 19:30 UTCJun 27, 05:35 UTC10h 5m
2026-06-26 CHH7267 - Jun 26, 11:09 UTCJun 26, 11:24 UTC15m
2026-06-26 CHH7701 - Jun 26, 00:45 UTCJun 26, 01:05 UTC20m
2026-06-25 CHH752 - Jun 25, 21:20 UTCJun 25, 21:35 UTC15m
2026-06-25 CHH752 - Jun 25, 11:59 UTCJun 25, 18:45 UTC6h 45m
2026-06-24 CHH751 - Jun 24, 19:10 UTCJun 24, 22:55 UTC3h 45m
2026-06-24 CHH7146 - Jun 24, 09:24 UTCJun 24, 09:45 UTC20m
2026-06-23 CHH7145 - Jun 23, 23:44 UTCJun 24, 00:05 UTC20m

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-1098 page for operator, model, and routing details .

Mode-S 7813A1 frequently asked

What is Mode-S code 7813A1?
7813A1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1098.
Where is Mode-S 7813A1 registered?
Mode-S code 7813A1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7813A1 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 7813A1, octal 36011641, decimal 7,869,345.
What flights does 7813A1 operate?
Mode-S 7813A1 has broadcast 20 distinct callsigns, including CHH752, CHH751, CHH754, CHH753, CHH7966.