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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 Jul 25, 14:00 UTC
Flights observed
208
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 14:00 UTC

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 Hainan Airlines 27 2026-07-24
CHH754 Hainan Airlines 22 2026-07-22
CHH751 Hainan Airlines 21 2026-07-23
CHH753 - 16 2026-07-21
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
CHH6213 Hainan Airlines 4 2026-07-23
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CHH6224 PEK → URC Jul 25, 13:40 UTCJul 25, 14:00 UTC20m
2026-07-25 CHH7808 CAN → PEK Jul 25, 10:20 UTCJul 25, 10:35 UTC15m
2026-07-25 CHH7801 PEK → CAN Jul 25, 01:40 UTCJul 25, 02:10 UTC30m
2026-07-24 CHH752 DUB → PEK Jul 24, 20:25 UTCJul 24, 20:40 UTC15m
2026-07-24 CHH752 DUB → PEK Jul 24, 11:20 UTCJul 24, 17:55 UTC6h 35m
2026-07-23 CHH751 PEK → DUB Jul 23, 19:20 UTCJul 23, 19:35 UTC15m
2026-07-23 CHH6213 PEK → KHN Jul 23, 01:20 UTCJul 23, 01:30 UTC10m
2026-07-22 CHH754 MAN → PEK Jul 22, 20:55 UTCJul 22, 21:15 UTC20m
2026-07-22 CHH754 MAN → PEK Jul 22, 11:35 UTCJul 22, 18:25 UTC6h 50m
2026-07-21 CHH753 - Jul 21, 22:55 UTCJul 21, 23:30 UTC35m
2026-07-21 CHH753 - Jul 21, 19:35 UTCJul 21, 19:50 UTC15m
2026-07-21 CHH7677 - Jul 21, 10:40 UTCJul 21, 10:50 UTC10m
2026-07-21 CHH6213 PEK → KHN Jul 21, 01:20 UTCJul 21, 01:30 UTC10m
2026-07-20 CHH752 DUB → PEK Jul 20, 20:40 UTCJul 20, 20:55 UTC15m
2026-07-20 CHH752 DUB → PEK Jul 20, 11:15 UTCJul 20, 18:05 UTC6h 50m
2026-07-19 CHH751 - Jul 19, 20:10 UTCJul 20, 06:10 UTC10h 0m
2026-07-19 CHH6214 - Jul 19, 08:05 UTCJul 19, 08:15 UTC10m
2026-07-19 CHH6213 - Jul 19, 01:20 UTCJul 19, 01:30 UTC10m
2026-07-18 CHH752 DUB → PEK Jul 18, 20:35 UTCJul 18, 20:50 UTC15m
2026-07-18 CHH752 DUB → PEK Jul 18, 11:20 UTCJul 18, 18:05 UTC6h 45m
2026-07-17 CHH751 - Jul 17, 19:15 UTCJul 18, 05:40 UTC10h 26m
2026-07-17 CHH7847 - Jul 17, 08:49 UTCJul 17, 09:04 UTC15m
2026-07-17 CHH7603 - Jul 17, 01:09 UTCJul 17, 01:25 UTC15m
2026-07-16 CHH754 - Jul 16, 11:20 UTCJul 16, 15:05 UTC3h 45m
2026-07-15 CHH753 - Jul 15, 22:55 UTCJul 16, 05:45 UTC6h 50m
2026-07-15 CHH753 - Jul 15, 19:35 UTCJul 15, 19:50 UTC15m
2026-07-15 CHH7281 - Jul 15, 09:05 UTCJul 15, 09:15 UTC10m
2026-07-15 CHH7382 - Jul 15, 00:20 UTCJul 15, 00:45 UTC25m
2026-07-14 CHH754 - Jul 14, 20:35 UTCJul 14, 20:50 UTC15m
2026-07-14 CHH754 - Jul 14, 11:25 UTCJul 14, 18:10 UTC6h 45m
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

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 Jul 25, 14:00 UTC.
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, CHH754, CHH751, CHH753, CHH7966.