Apparatus

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sensors Mode-S transponder

7820FC

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-227W · BOEING 737 MAX 8

Hex
7820FC
Octal
36020374
Decimal
7,872,764
Country
CN
Tail
B-227W
Type
B38M
No current signal · last broadcast 55m ago
Flights observed
180
Distinct callsigns
20
Country
CN
Last broadcast
55m ago

Last known position

Most recent position reported by Mode-S 7820FC.

Country allocation

The ICAO 24-bit address 7820FC 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 Hainan Airlines 15 2026-07-19
CHH756 Hainan Airlines 12 2026-05-31
CHH7923 - 9 2026-06-15
CHH7074 - 8 2026-07-14
CHH447 - 8 2026-07-07
CHH450 - 7 2026-07-11
CHH449 - 7 2026-07-11
CHH429 - 7 2026-06-20
CHH7924 - 5 2026-06-15
CHH430 - 5 2026-06-20
CHH7909 Hainan Airlines 4 2026-07-09
CHH702 - 4 2026-07-16
CHH701 - 4 2026-07-16
CHH7910 - 3 2026-07-08
CHH7567 Hainan Airlines 3 2026-06-11
CHH7435 - 3 2026-06-24
CHH7187 Hainan Airlines 3 2026-05-05
CHH706 - 3 2026-07-18
CHH705 Hainan Airlines 3 2026-07-18
CHH498 - 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 CHH498 - Jul 19, 04:30 UTCJul 19, 04:50 UTC20m
2026-07-19 CHH755 HAK → KUL Jul 19, 02:35 UTCJul 19, 02:55 UTC20m
2026-07-18 CHH706 - Jul 18, 14:00 UTCJul 18, 14:15 UTC15m
2026-07-18 CHH7915 CGQ → HKG Jul 18, 05:15 UTCJul 18, 12:40 UTC7h 25m
2026-07-18 CHH7916 HKG → CGQ Jul 18, 02:50 UTCJul 18, 03:05 UTC15m
2026-07-18 CHH705 HAK → HKG Jul 18, 00:39 UTCJul 18, 00:55 UTC15m
2026-07-16 CHH702 - Jul 16, 13:20 UTCJul 17, 07:14 UTC17h 55m
2026-07-16 CHH701 - Jul 16, 11:15 UTCJul 16, 11:34 UTC20m
2026-07-16 CHH7482 - Jul 16, 01:25 UTCJul 16, 01:45 UTC20m
2026-07-14 CHH7074 - Jul 14, 02:40 UTCJul 14, 15:45 UTC13h 5m
2026-07-13 CHH7074 - Jul 13, 12:20 UTCJul 14, 07:30 UTC19h 10m
2026-07-13 CHH7115 - Jul 13, 01:40 UTCJul 13, 07:35 UTC5h 55m
2026-07-12 CHH7935 - Jul 12, 12:15 UTCJul 12, 12:25 UTC10m
2026-07-11 CHH450 - Jul 11, 13:05 UTCJul 12, 07:55 UTC18h 50m
2026-07-11 CHH450 - Jul 11, 12:40 UTCJul 12, 07:55 UTC19h 15m
2026-07-11 CHH449 - Jul 11, 08:05 UTCJul 11, 11:05 UTC3h 0m
2026-07-09 CHH448 - Jul 9, 20:30 UTCJul 10, 05:35 UTC9h 5m
2026-07-09 CHH7909 HAK → SIN Jul 9, 18:30 UTCJul 9, 18:50 UTC20m
2026-07-08 CHH7910 - Jul 8, 20:30 UTCJul 8, 20:55 UTC25m
2026-07-07 CHH447 - Jul 7, 23:30 UTCJul 8, 18:55 UTC19h 25m
2026-07-07 CHH447 - Jul 7, 21:05 UTCJul 8, 18:55 UTC21h 50m
2026-07-07 CHH447 - Jul 7, 20:40 UTCJul 8, 18:55 UTC22h 15m
2026-07-07 CHH7909 HAK → SIN Jul 7, 18:05 UTCJul 7, 18:35 UTC30m
2026-07-06 CHH7909 HAK → SIN Jul 6, 21:05 UTCJul 7, 18:35 UTC21h 30m
2026-07-06 CHH7910 - Jul 6, 20:45 UTCJul 7, 18:35 UTC21h 50m
2026-07-06 CHH447 - Jul 6, 06:35 UTCJul 6, 19:00 UTC12h 25m
2026-07-05 CHH447 - Jul 5, 20:35 UTCJul 6, 19:00 UTC22h 25m
2026-07-05 CHH447 - Jul 5, 06:05 UTCJul 5, 18:45 UTC12h 40m
2026-07-04 CHH448 - Jul 4, 21:00 UTCJul 5, 18:45 UTC21h 45m
2026-07-04 CHH7909 HAK → SIN Jul 4, 19:10 UTCJul 4, 19:30 UTC20m
2026-07-03 CHH7910 - Jul 3, 21:00 UTCJul 3, 21:25 UTC25m
2026-07-03 CHH447 - Jul 3, 06:25 UTCJul 3, 19:05 UTC12h 40m
2026-07-02 CHH447 - Jul 2, 11:05 UTCJul 3, 10:40 UTC23h 35m
2026-07-02 CHH7040 - Jul 2, 10:55 UTCJul 3, 06:35 UTC19h 40m
2026-07-01 CHH7039 - Jul 1, 23:40 UTCJul 2, 11:10 UTC11h 30m
2026-07-01 CHH7039 - Jul 1, 15:25 UTCJul 2, 11:10 UTC19h 45m
2026-07-01 CHH450 - Jul 1, 13:05 UTCJul 2, 11:10 UTC22h 5m
2026-07-01 CHH450 - Jul 1, 12:35 UTCJul 2, 11:00 UTC22h 25m
2026-07-01 CHH449 - Jul 1, 07:50 UTCJul 1, 10:40 UTC2h 50m
2026-06-29 CHH7024 - Jun 29, 06:40 UTCJun 29, 06:50 UTC10m
2026-06-28 CHH7767 - Jun 28, 23:50 UTCJun 29, 01:05 UTC1h 15m
2026-06-28 CHH6206 - Jun 28, 16:39 UTCJun 28, 17:04 UTC25m
2026-06-28 CHH6205 - Jun 28, 09:39 UTCJun 28, 09:50 UTC10m
2026-06-27 CHH7392 - Jun 27, 14:35 UTCJun 27, 15:00 UTC25m
2026-06-27 CHH7391 - Jun 27, 09:29 UTCJun 27, 09:40 UTC10m
2026-06-27 CHH7156 - Jun 27, 07:15 UTCJun 27, 07:34 UTC20m
2026-06-27 CHH7155 - Jun 27, 02:09 UTCJun 27, 02:20 UTC10m
2026-06-27 CHH7398 - Jun 27, 00:20 UTCJun 27, 00:34 UTC15m
2026-06-26 CHH7629 - Jun 26, 03:15 UTCJun 26, 04:14 UTC1h 0m
2026-06-25 CHH7769 - Jun 25, 23:59 UTCJun 26, 00:10 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-227W page for operator, model, and routing details .

Mode-S 7820FC frequently asked

What is Mode-S code 7820FC?
7820FC is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-227W.
Where is Mode-S 7820FC registered?
Mode-S code 7820FC is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820FC broadcasting right now?
No active broadcast right now. Last signal was 55m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820FC, octal 36020374, decimal 7,872,764.
What flights does 7820FC operate?
Mode-S 7820FC has broadcast 20 distinct callsigns, including CHH755, CHH756, CHH7923, CHH7074, CHH447.