Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7823F6

ICAO 24-bit transponder address · allocated to China

Hex
7823F6
Octal
36021766
Decimal
7,873,526
Country
CN
No current signal · last broadcast Jul 26, 16:30 UTC
Flights observed
120
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 16:30 UTC

Last known position

Most recent position reported by Mode-S 7823F6.

Country allocation

The ICAO 24-bit address 7823F6 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
CHH7579 Hainan Airlines 13 2026-07-26
CHH7939 - 11 2026-07-01
CHH7940 - 8 2026-07-01
CHH721 - 8 2026-06-30
CHH722 - 7 2026-06-30
CHH6053 - 7 2026-07-19
CHH7384 - 6 2026-07-20
CHH7383 Hainan Airlines 5 2026-07-20
CHH7280 Hainan Airlines 5 2026-07-26
CHH7135 Hainan Airlines 4 2026-06-09
CHH7304 - 3 2026-07-04
CHH6054 - 3 2026-07-10
CHH7687 - 2 2026-06-16
CHH7303 Hainan Airlines 2 2026-07-26
CHH7204 Hainan Airlines 2 2026-06-07
CHH7116 - 2 2026-06-27
CHH7087 Hainan Airlines 2 2026-06-14
CHH7038 Hainan Airlines 2 2026-06-15
CHH7812 Hainan Airlines 1 2026-06-02
CHH7811 Hainan Airlines 1 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHH7579 PEK → SYX Jul 26, 13:30 UTCJul 26, 16:30 UTC3h 0m
2026-07-26 CHH7280 SYX → PEK Jul 26, 11:50 UTCJul 26, 12:05 UTC15m
2026-07-26 CHH7303 SYX → TFU Jul 26, 01:05 UTCJul 26, 06:05 UTC5h 0m
2026-07-25 CHH7579 - Jul 25, 13:30 UTCJul 25, 16:30 UTC3h 0m
2026-07-24 CHH7579 - Jul 24, 13:35 UTCJul 25, 08:30 UTC18h 55m
2026-07-24 CHH7579 - Jul 24, 13:25 UTCJul 25, 08:30 UTC19h 5m
2026-07-24 CHH7280 SYX → PEK Jul 24, 01:10 UTCJul 24, 11:35 UTC10h 25m
2026-07-23 CHH7579 - Jul 23, 13:40 UTCJul 23, 16:50 UTC3h 10m
2026-07-23 CHH7280 SYX → PEK Jul 23, 11:40 UTCJul 23, 11:50 UTC10m
2026-07-22 CHH7579 - Jul 22, 16:10 UTCJul 23, 09:05 UTC16h 55m
2026-07-21 CHH7579 - Jul 21, 14:00 UTCJul 22, 02:00 UTC12h 0m
2026-07-21 CHH7280 SYX → PEK Jul 21, 11:50 UTCJul 21, 12:00 UTC10m
2026-07-20 CHH7384 - Jul 20, 15:35 UTCJul 21, 06:30 UTC14h 54m
2026-07-20 CHH7383 SYX → HGH Jul 20, 10:25 UTCJul 21, 06:30 UTC20h 5m
2026-07-20 CHH7383 SYX → HGH Jul 20, 07:10 UTCJul 21, 01:55 UTC18h 44m
2026-07-19 CHH6053 - Jul 19, 09:45 UTCJul 20, 07:30 UTC21h 45m
2026-07-19 CHH6053 - Jul 19, 01:05 UTCJul 19, 10:10 UTC9h 5m
2026-07-18 CHH7579 - Jul 18, 13:25 UTCJul 18, 16:30 UTC3h 5m
2026-07-17 CHH7384 - Jul 17, 14:30 UTCJul 18, 06:05 UTC15h 36m
2026-07-17 CHH7383 SYX → HGH Jul 17, 10:15 UTCJul 18, 06:05 UTC19h 51m
2026-07-15 CHH7579 - Jul 15, 13:40 UTCJul 15, 16:35 UTC2h 55m
2026-07-15 CHH7810 - Jul 15, 10:05 UTCJul 15, 10:15 UTC10m
2026-07-15 CHH7803 - Jul 15, 01:45 UTCJul 15, 02:05 UTC20m
2026-07-13 CHH7579 - Jul 13, 13:35 UTCJul 14, 09:00 UTC19h 25m
2026-07-12 CHH7383 - Jul 12, 09:50 UTCJul 13, 06:15 UTC20h 25m
2026-07-10 CHH6054 - Jul 10, 14:30 UTCJul 11, 06:55 UTC16h 25m
2026-07-09 CHH7384 - Jul 9, 09:50 UTCJul 9, 14:55 UTC5h 5m
2026-07-08 CHH6054 - Jul 8, 14:20 UTCJul 9, 10:10 UTC19h 50m
2026-07-08 CHH6054 - Jul 8, 00:55 UTCJul 8, 14:45 UTC13h 50m
2026-07-07 CHH6053 - Jul 7, 14:15 UTCJul 8, 10:05 UTC19h 50m
2026-07-07 CHH6053 - Jul 7, 10:05 UTCJul 8, 07:00 UTC20h 55m
2026-07-07 CHH6053 - Jul 7, 06:50 UTCJul 8, 00:55 UTC18h 5m
2026-07-06 CHH6053 - Jul 6, 16:35 UTCJul 7, 14:40 UTC22h 5m
2026-07-06 CHH7579 - Jul 6, 13:35 UTCJul 7, 10:20 UTC20h 45m
2026-07-05 CHH7384 - Jul 5, 15:10 UTCJul 6, 09:20 UTC18h 10m
2026-07-05 CHH7384 - Jul 5, 10:35 UTCJul 6, 09:20 UTC22h 45m
2026-07-05 CHH7384 - Jul 5, 07:50 UTCJul 5, 15:25 UTC7h 35m
2026-07-04 CHH7383 - Jul 4, 14:10 UTCJul 5, 10:45 UTC20h 35m
2026-07-04 CHH6053 - Jul 4, 10:05 UTCJul 5, 07:50 UTC21h 45m
2026-07-04 CHH7304 - Jul 4, 05:35 UTCJul 4, 14:10 UTC8h 35m
2026-07-03 CHH7304 - Jul 3, 09:40 UTCJul 4, 05:50 UTC20h 10m
2026-07-03 CHH7304 - Jul 3, 01:05 UTCJul 3, 09:50 UTC8h 45m
2026-07-02 CHH7579 - Jul 2, 13:15 UTCJul 2, 16:25 UTC3h 10m
2026-07-02 CHH7280 - Jul 2, 11:35 UTCJul 2, 11:50 UTC15m
2026-07-02 CHH7303 - Jul 2, 01:10 UTCJul 2, 08:45 UTC7h 35m
2026-07-01 CHH7579 - Jul 1, 13:15 UTCJul 1, 16:20 UTC3h 5m
2026-07-01 CHH7940 - Jul 1, 04:15 UTCJul 1, 04:35 UTC20m
2026-07-01 CHH7939 - Jul 1, 01:15 UTCJul 1, 03:00 UTC1h 45m
2026-06-30 CHH722 - Jun 30, 12:30 UTCJun 30, 12:55 UTC25m
2026-06-30 CHH721 - Jun 30, 04:20 UTCJun 30, 11:10 UTC6h 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.

Mode-S 7823F6 frequently asked

What is Mode-S code 7823F6?
7823F6 is an ICAO 24-bit transponder address. Allocated to China.
Where is Mode-S 7823F6 registered?
Mode-S code 7823F6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7823F6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7823F6, octal 36021766, decimal 7,873,526.
What flights does 7823F6 operate?
Mode-S 7823F6 has broadcast 20 distinct callsigns, including CHH7579, CHH7939, CHH7940, CHH721, CHH722.