sensors Mode-S transponder

7820F8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-225S · BOEING 737 MAX 8

Hex
7820F8
Octal
36020370
Decimal
7,872,760
Country
CN
Tail
B-225S
Type
B38M
No current signal · last broadcast 10h ago
Flights observed
59
Distinct callsigns
11
Country
CN
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 7820F8.

Country allocation

The ICAO 24-bit address 7820F8 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 11 distinct

Callsign Airline Flights Last seen
CHH7048 - 20 2026-06-02
CHH7061 Hainan Airlines 13 2026-05-30
CHH7047 - 12 2026-06-02
CHH7022 Hainan Airlines 3 2026-05-06
CHH7055 Hainan Airlines 2 2026-05-29
CHH7021 Hainan Airlines 2 2026-05-05
CHH7215 Hainan Airlines 1 2026-05-27
CHH7076 Hainan Airlines 1 2026-05-26
CHH7075 Hainan Airlines 1 2026-05-26
CHH7045 Hainan Airlines 1 2026-05-28
CHH7042 Hainan Airlines 1 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CHH7048 - Jun 2, 12:45 UTCJun 2, 13:05 UTC20m
2026-06-02 CHH7047 - Jun 2, 00:20 UTCJun 2, 08:20 UTC8h 0m
2026-06-01 CHH7048 - Jun 1, 07:35 UTCJun 1, 12:40 UTC5h 5m
2026-05-31 CHH7047 - May 31, 23:35 UTCJun 1, 00:00 UTC25m
2026-05-30 CHH7061 HAK → HGH May 30, 06:15 UTCMay 30, 14:45 UTC8h 30m
2026-05-29 CHH7061 HAK → HGH May 29, 13:55 UTCMay 30, 06:35 UTC16h 40m
2026-05-29 CHH7055 HAK → HGH May 29, 08:55 UTCMay 30, 06:35 UTC21h 40m
2026-05-29 CHH7055 HAK → HGH May 29, 00:55 UTCMay 29, 13:55 UTC13h 0m
2026-05-28 CHH7045 ZUH → TYN May 28, 05:40 UTCMay 28, 05:50 UTC10m
2026-05-27 CHH7215 HAK → NKG May 27, 04:30 UTCMay 27, 09:45 UTC5h 16m
2026-05-26 CHH7076 FOC → HAK May 26, 04:24 UTCMay 26, 04:45 UTC20m
2026-05-26 CHH7075 HAK → KHN May 26, 00:49 UTCMay 26, 01:10 UTC20m
2026-05-20 CHH7061 HAK → HGH May 20, 06:05 UTCMay 20, 06:20 UTC15m
2026-05-19 CHH7061 HAK → HGH May 19, 06:10 UTCMay 19, 06:25 UTC15m
2026-05-17 CHH7042 HGH → HAK May 17, 09:30 UTCMay 17, 16:40 UTC7h 10m
2026-05-14 CHH7048 - May 14, 08:05 UTCMay 14, 12:50 UTC4h 45m
2026-05-14 CHH7047 - May 14, 00:05 UTCMay 14, 00:15 UTC10m
2026-05-12 CHH7048 - May 12, 12:25 UTCMay 12, 12:45 UTC20m
2026-05-10 CHH7048 - May 10, 23:29 UTCMay 11, 12:50 UTC13h 20m
2026-05-09 CHH7061 HAK → HGH May 9, 06:25 UTCMay 9, 06:40 UTC15m
2026-05-08 CHH7061 HAK → HGH May 8, 06:09 UTCMay 8, 06:25 UTC15m
2026-05-07 CHH7061 HAK → HGH May 7, 06:15 UTCMay 7, 06:25 UTC10m
2026-05-06 CHH7022 CAN → SYX May 6, 01:10 UTCMay 6, 01:25 UTC15m
2026-05-05 CHH7021 HAK → SZX May 5, 23:10 UTCMay 5, 23:30 UTC20m
2026-05-05 CHH7061 HAK → HGH May 5, 06:15 UTCMay 5, 06:30 UTC15m
2026-05-04 CHH7061 HAK → HGH May 4, 06:15 UTCMay 4, 06:35 UTC20m
2026-05-03 CHH7061 HAK → HGH May 3, 06:05 UTCMay 3, 06:20 UTC15m
2026-05-02 CHH7061 HAK → HGH May 2, 06:15 UTCMay 2, 06:30 UTC15m
2026-05-01 CHH7022 CAN → SYX May 1, 01:15 UTCMay 1, 01:35 UTC20m
2026-04-30 CHH7021 HAK → SZX Apr 30, 23:15 UTCApr 30, 23:30 UTC15m
2026-04-30 CHH7061 HAK → HGH Apr 30, 06:30 UTCApr 30, 06:45 UTC15m
2026-04-29 CHH7022 CAN → SYX Apr 29, 00:59 UTCApr 29, 01:15 UTC15m
2026-04-28 CHH7061 HAK → HGH Apr 28, 06:10 UTCApr 28, 06:20 UTC10m
2026-04-26 CHH7048 - Apr 26, 12:35 UTCApr 26, 13:00 UTC25m
2026-04-26 CHH7047 - Apr 26, 00:05 UTCApr 26, 00:25 UTC20m
2026-04-25 CHH7048 - Apr 25, 12:30 UTCApr 25, 12:55 UTC25m
2026-04-25 CHH7047 - Apr 25, 00:05 UTCApr 25, 00:30 UTC25m
2026-04-24 CHH7048 - Apr 24, 13:10 UTCApr 24, 13:35 UTC25m
2026-04-24 - - Apr 24, 08:10 UTCApr 24, 08:25 UTC15m
2026-04-24 CHH7047 - Apr 24, 00:30 UTCApr 24, 00:45 UTC15m
2026-04-23 CHH7048 - Apr 23, 02:55 UTCApr 23, 12:50 UTC9h 55m
2026-04-23 CHH7047 - Apr 23, 00:05 UTCApr 23, 00:20 UTC15m
2026-04-22 CHH7048 - Apr 22, 04:45 UTCApr 22, 14:25 UTC9h 40m
2026-04-21 CHH7048 - Apr 21, 08:30 UTCApr 22, 00:25 UTC15h 55m
2026-04-21 CHH7048 - Apr 21, 00:10 UTCApr 21, 12:55 UTC12h 45m
2026-04-20 CHH7048 - Apr 20, 12:30 UTCApr 20, 12:50 UTC20m
2026-04-19 CHH7047 - Apr 19, 23:30 UTCApr 20, 08:30 UTC9h 0m
2026-04-19 CHH7048 - Apr 19, 12:30 UTCApr 20, 08:30 UTC20h 0m
2026-04-19 - - Apr 19, 07:50 UTCApr 19, 08:25 UTC35m
2026-04-18 CHH7048 - Apr 18, 12:45 UTCApr 19, 00:35 UTC11h 50m

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-225S page for operator, model, and routing details .

Mode-S 7820F8 frequently asked

What is Mode-S code 7820F8?
7820F8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-225S.
Where is Mode-S 7820F8 registered?
Mode-S code 7820F8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820F8 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 7820F8, octal 36020370, decimal 7,872,760.
What flights does 7820F8 operate?
Mode-S 7820F8 has broadcast 11 distinct callsigns, including CHH7048, CHH7061, CHH7047, CHH7022, CHH7055.