Apparatus

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sensors Mode-S transponder

7820F4

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32H6 · AIRBUS A-320neo

Hex
7820F4
Octal
36020364
Decimal
7,872,756
Country
CN
Tail
B-32H6
Type
A20N
No current signal · last broadcast 4h ago
Flights observed
145
Distinct callsigns
20
Country
CN
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 7820F4.

Country allocation

The ICAO 24-bit address 7820F4 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
CHH7939 - 10 2026-07-16
CHH721 - 10 2026-07-16
CHH7167 Hainan Airlines 9 2026-05-20
CHH7197 Hainan Airlines 8 2026-06-26
CHH7245 Hainan Airlines 7 2026-05-30
CHH722 - 7 2026-07-16
CHH7246 Hainan Airlines 6 2026-05-30
CHH7198 - 6 2026-06-27
CHH7112 Hainan Airlines 6 2026-05-19
CHH7940 - 5 2026-07-16
CHH7582 - 5 2026-07-03
CHH7135 - 5 2026-07-02
CHH7212 - 4 2026-06-28
CHH7111 Hainan Airlines 4 2026-05-05
CHH7347 - 3 2026-06-27
CHH7211 - 3 2026-06-27
CHH7168 Hainan Airlines 3 2026-05-05
CHH7038 - 3 2026-07-17
CHH7807 - 2 2026-07-11
CHH7577 Hainan Airlines 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CHH7038 - Jul 17, 16:19 UTCJul 18, 07:50 UTC15h 31m
2026-07-16 CHH722 - Jul 16, 14:15 UTCJul 16, 14:29 UTC15m
2026-07-16 CHH721 - Jul 16, 11:34 UTCJul 16, 12:30 UTC55m
2026-07-16 CHH7940 - Jul 16, 04:30 UTCJul 16, 04:45 UTC15m
2026-07-16 CHH7939 - Jul 16, 02:30 UTCJul 16, 02:50 UTC20m
2026-07-15 CHH7940 - Jul 15, 04:15 UTCJul 15, 04:30 UTC15m
2026-07-15 CHH7939 - Jul 15, 02:25 UTCJul 15, 02:45 UTC20m
2026-07-14 CHH7038 - Jul 14, 14:15 UTCJul 14, 14:35 UTC20m
2026-07-13 CHH7002 - Jul 13, 23:15 UTCJul 13, 23:30 UTC15m
2026-07-11 CHH7807 - Jul 11, 04:45 UTCJul 11, 05:05 UTC20m
2026-07-10 CHH7807 - Jul 10, 05:00 UTCJul 10, 05:25 UTC25m
2026-07-09 CHH7204 - Jul 9, 13:30 UTCJul 9, 16:50 UTC3h 20m
2026-07-09 CHH7432 - Jul 9, 07:40 UTCJul 9, 07:50 UTC10m
2026-07-06 CHH7009 - Jul 6, 16:40 UTCJul 6, 16:50 UTC10m
2026-07-06 CHH7008 - Jul 6, 06:25 UTCJul 6, 06:40 UTC15m
2026-07-06 CHH7004 - Jul 6, 00:15 UTCJul 6, 00:35 UTC20m
2026-07-05 CHH7204 - Jul 5, 14:45 UTCJul 5, 15:10 UTC25m
2026-07-04 CHH7370 - Jul 4, 04:00 UTCJul 4, 04:15 UTC15m
2026-07-03 CHH7582 - Jul 3, 08:20 UTCJul 4, 04:15 UTC19h 55m
2026-07-03 CHH7136 - Jul 3, 05:45 UTCJul 3, 05:55 UTC10m
2026-07-02 CHH7135 - Jul 2, 23:30 UTCJul 2, 23:50 UTC20m
2026-07-01 CHH7056 - Jul 1, 01:40 UTCJul 1, 13:55 UTC12h 15m
2026-06-30 CHH7038 - Jun 30, 14:20 UTCJul 1, 12:55 UTC22h 35m
2026-06-30 CHH7037 - Jun 30, 10:00 UTCJul 1, 09:00 UTC23h 0m
2026-06-30 CHH7037 - Jun 30, 06:20 UTCJul 1, 01:55 UTC19h 35m
2026-06-28 CHH7137 - Jun 28, 23:09 UTCJun 28, 23:25 UTC15m
2026-06-28 CHH7153 - Jun 28, 09:34 UTCJun 28, 09:50 UTC15m
2026-06-28 CHH7212 - Jun 28, 07:09 UTCJun 28, 07:29 UTC20m
2026-06-27 CHH7211 - Jun 27, 23:45 UTCJun 28, 00:04 UTC20m
2026-06-27 CHH7347 - Jun 27, 06:54 UTCJun 27, 07:04 UTC10m
2026-06-27 CHH7198 - Jun 27, 03:49 UTCJun 27, 04:15 UTC25m
2026-06-26 CHH7197 PEK → LHW Jun 26, 23:04 UTCJun 26, 23:34 UTC30m
2026-06-26 CHH7810 - Jun 26, 10:15 UTCJun 26, 10:25 UTC10m
2026-06-26 CHH7805 - Jun 26, 02:40 UTCJun 26, 03:00 UTC20m
2026-06-25 CHH7347 - Jun 25, 06:40 UTCJun 25, 07:00 UTC20m
2026-06-25 CHH7198 - Jun 25, 03:54 UTCJun 25, 04:20 UTC25m
2026-06-24 CHH7197 PEK → LHW Jun 24, 23:14 UTCJun 24, 23:40 UTC25m
2026-06-24 CHH7267 - Jun 24, 10:14 UTCJun 24, 10:35 UTC20m
2026-06-23 CHH7211 - Jun 23, 23:39 UTCJun 23, 23:59 UTC20m
2026-06-23 CHH7267 - Jun 23, 09:49 UTCJun 23, 10:19 UTC30m
2026-06-23 CHH7212 - Jun 23, 06:59 UTCJun 23, 07:19 UTC20m
2026-06-22 CHH7211 - Jun 22, 23:45 UTCJun 23, 00:00 UTC15m
2026-06-22 CHH7347 - Jun 22, 06:54 UTCJun 22, 07:04 UTC10m
2026-06-22 CHH7806 - Jun 22, 04:49 UTCJun 22, 04:59 UTC10m
2026-06-21 CHH7813 - Jun 21, 11:55 UTCJun 21, 12:10 UTC15m
2026-06-20 CHH7212 - Jun 20, 23:45 UTCJun 21, 07:25 UTC7h 40m
2026-06-20 CHH7153 - Jun 20, 09:29 UTCJun 20, 09:54 UTC25m
2026-06-20 CHH7189 PEK → KWE Jun 20, 00:34 UTCJun 20, 00:59 UTC25m
2026-06-13 CHH7029 HAK → KWE Jun 13, 08:35 UTCJun 13, 08:50 UTC15m
2026-06-13 CHH7052 - Jun 13, 01:10 UTCJun 13, 06:25 UTC5h 14m

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-32H6 page for operator, model, and routing details .

Mode-S 7820F4 frequently asked

What is Mode-S code 7820F4?
7820F4 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32H6.
Where is Mode-S 7820F4 registered?
Mode-S code 7820F4 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820F4 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820F4, octal 36020364, decimal 7,872,756.
What flights does 7820F4 operate?
Mode-S 7820F4 has broadcast 20 distinct callsigns, including CHH7939, CHH721, CHH7167, CHH7197, CHH7245.