sensors Mode-S transponder

7820F7

ICAO 24-bit transponder address · allocated to China

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

Hex
7820F7
Octal
36020367
Decimal
7,872,759
Country
CN
Tail
B-225R
Type
B38M
No current signal · last broadcast 5h ago
Flights observed
91
Distinct callsigns
4
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 7820F7.

Country allocation

The ICAO 24-bit address 7820F7 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 4 distinct

Callsign Airline Flights Last seen
CHH423 Hainan Airlines 37 2026-05-11
CHH7048 - 21 2026-05-28
CHH424 Hainan Airlines 20 2026-05-11
CHH7047 - 11 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CHH7047 - May 30, 03:00 UTCMay 30, 03:10 UTC10m
2026-05-29 CHH7047 - May 29, 13:45 UTCMay 30, 00:25 UTC10h 40m
2026-05-28 CHH7048 - May 28, 12:30 UTCMay 29, 00:30 UTC12h 0m
2026-05-28 CHH7048 - May 28, 10:00 UTCMay 28, 10:15 UTC15m
2026-05-28 CHH7047 - May 28, 00:10 UTCMay 28, 00:30 UTC20m
2026-05-27 CHH7048 - May 27, 12:30 UTCMay 27, 12:50 UTC20m
2026-05-27 CHH7048 - May 27, 09:40 UTCMay 27, 10:00 UTC20m
2026-05-27 CHH7047 - May 27, 00:04 UTCMay 27, 08:15 UTC8h 10m
2026-05-26 CHH7048 - May 26, 12:24 UTCMay 27, 08:15 UTC19h 50m
2026-05-25 CHH7048 - May 25, 07:35 UTCMay 26, 00:35 UTC16h 59m
2026-05-24 CHH7048 - May 24, 23:30 UTCMay 25, 12:45 UTC13h 15m
2026-05-24 CHH7048 - May 24, 12:20 UTCMay 24, 12:45 UTC25m
2026-05-23 CHH7047 - May 23, 23:50 UTCMay 24, 08:15 UTC8h 25m
2026-05-23 CHH7048 - May 23, 12:30 UTCMay 24, 08:15 UTC19h 45m
2026-05-23 - - May 23, 09:35 UTCMay 23, 09:55 UTC20m
2026-05-22 CHH7048 - May 22, 12:25 UTCMay 23, 00:20 UTC11h 55m
2026-05-22 CHH7047 - May 22, 00:05 UTCMay 22, 00:25 UTC20m
2026-05-21 CHH7048 - May 21, 08:20 UTCMay 21, 12:50 UTC4h 30m
2026-05-20 CHH7048 - May 20, 08:15 UTCMay 21, 00:35 UTC16h 20m
2026-05-20 CHH7048 - May 20, 00:00 UTCMay 20, 12:40 UTC12h 41m
2026-05-19 CHH7048 - May 19, 12:25 UTCMay 20, 08:30 UTC20h 6m
2026-05-19 CHH7048 - May 19, 07:45 UTCMay 20, 00:10 UTC16h 25m
2026-05-18 CHH7048 - May 18, 12:35 UTCMay 19, 00:25 UTC11h 49m
2026-05-18 CHH7047 - May 18, 03:10 UTCMay 18, 08:25 UTC5h 15m
2026-05-17 CHH7047 - May 17, 23:35 UTCMay 17, 23:55 UTC20m
2026-05-17 CHH7048 - May 17, 12:30 UTCMay 17, 12:50 UTC20m
2026-05-17 - - May 17, 09:55 UTCMay 17, 10:05 UTC10m
2026-05-16 CHH7048 - May 16, 07:41 UTCMay 17, 00:20 UTC16h 40m
2026-05-15 CHH7048 - May 15, 12:30 UTCMay 16, 00:55 UTC12h 24m
2026-05-15 CHH7048 - May 15, 09:30 UTCMay 15, 10:15 UTC45m
2026-05-15 CHH7047 - May 15, 00:00 UTCMay 15, 00:25 UTC25m
2026-05-13 CHH7048 - May 13, 12:35 UTCMay 13, 12:50 UTC15m
2026-05-13 CHH7047 - May 13, 00:00 UTCMay 13, 00:20 UTC20m
2026-05-12 CHH7047 - May 12, 04:25 UTCMay 13, 00:20 UTC19h 55m
2026-05-11 CHH424 BKK → CKG May 11, 04:35 UTCMay 11, 05:30 UTC55m
2026-05-11 CHH423 CKG → BKK May 11, 01:55 UTCMay 11, 02:55 UTC1h 0m
2026-05-10 CHH424 BKK → CKG May 10, 04:29 UTCMay 11, 02:55 UTC22h 25m
2026-05-10 CHH423 CKG → BKK May 10, 02:00 UTCMay 10, 02:55 UTC55m
2026-05-09 CHH423 CKG → BKK May 9, 04:35 UTCMay 10, 02:55 UTC22h 20m
2026-05-09 CHH423 CKG → BKK May 9, 02:00 UTCMay 9, 03:10 UTC1h 10m
2026-05-08 CHH423 CKG → BKK May 8, 04:34 UTCMay 9, 03:10 UTC22h 35m
2026-05-08 CHH423 CKG → BKK May 8, 01:59 UTCMay 8, 02:55 UTC55m
2026-05-07 CHH424 BKK → CKG May 7, 04:30 UTCMay 8, 02:55 UTC22h 25m
2026-05-07 CHH423 CKG → BKK May 7, 01:55 UTCMay 7, 02:55 UTC1h 0m
2026-05-06 CHH423 CKG → BKK May 6, 04:30 UTCMay 7, 02:55 UTC22h 24m
2026-05-06 CHH423 CKG → BKK May 6, 02:25 UTCMay 6, 03:00 UTC35m
2026-05-05 CHH423 CKG → BKK May 5, 05:05 UTCMay 6, 03:00 UTC21h 55m
2026-05-05 CHH423 CKG → BKK May 5, 02:15 UTCMay 5, 02:45 UTC30m
2026-05-04 CHH423 CKG → BKK May 4, 04:24 UTCMay 5, 02:45 UTC22h 21m
2026-05-04 CHH423 CKG → BKK May 4, 02:39 UTCMay 4, 03:09 UTC30m

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

Mode-S 7820F7 frequently asked

What is Mode-S code 7820F7?
7820F7 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-225R.
Where is Mode-S 7820F7 registered?
Mode-S code 7820F7 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820F7 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820F7, octal 36020367, decimal 7,872,759.
What flights does 7820F7 operate?
Mode-S 7820F7 has broadcast 4 distinct callsigns, including CHH423, CHH7048, CHH424, CHH7047.