Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7823FD

ICAO 24-bit transponder address · allocated to China

Hex
7823FD
Octal
36021775
Decimal
7,873,533
Country
CN
No current signal · last broadcast Jul 26, 09:10 UTC
Flights observed
93
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 09:10 UTC

Last known position

Most recent position reported by Mode-S 7823FD.

Country allocation

The ICAO 24-bit address 7823FD 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
CES721 China Eastern Airlines 32 2026-07-26
CES722 China Eastern Airlines 20 2026-07-26
CES5692 - 5 2026-06-19
CES5164 - 5 2026-06-23
CES5154 - 5 2026-06-25
CES501 - 2 2026-06-29
CES800 China Eastern Airlines 1 2026-05-27
CES724 - 1 2026-06-18
CES723 - 1 2026-06-17
CES5549 - 1 2026-06-21
CES5392 - 1 2026-06-30
CES5391 - 1 2026-06-30
CES5359 - 1 2026-06-30
CES5352 - 1 2026-06-24
CES5343 - 1 2026-06-24
CES5342 China Eastern Airlines 1 2026-06-14
CES5340 - 1 2026-06-13
CES5333 - 1 2026-06-14
CES5331 China Eastern Airlines 1 2026-06-13
CES5314 - 1 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CES722 HKG → SHA Jul 26, 07:30 UTCJul 26, 09:10 UTC1h 40m
2026-07-26 CES721 SHA → HKG Jul 26, 05:35 UTCJul 26, 05:50 UTC15m
2026-07-25 CES722 HKG → SHA Jul 25, 04:35 UTCJul 25, 04:55 UTC20m
2026-07-24 CES721 SHA → HKG Jul 24, 12:50 UTCJul 25, 02:20 UTC13h 30m
2026-07-24 CES239 SHA → MFM Jul 24, 10:05 UTCJul 24, 10:45 UTC40m
2026-07-23 CES5301 SHA → CAN Jul 23, 04:25 UTCJul 23, 04:40 UTC15m
2026-07-22 CES5124 PEK → SHA Jul 22, 14:20 UTCJul 22, 14:35 UTC15m
2026-07-22 CES722 HKG → SHA Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-22 CES721 SHA → HKG Jul 22, 01:45 UTCJul 22, 02:30 UTC45m
2026-07-21 CES721 SHA → HKG Jul 21, 05:20 UTCJul 22, 02:30 UTC21h 10m
2026-07-21 CES722 HKG → SHA Jul 21, 04:30 UTCJul 22, 02:30 UTC22h 0m
2026-07-21 CES721 SHA → HKG Jul 21, 01:45 UTCJul 21, 02:35 UTC50m
2026-07-20 CES722 HKG → SHA Jul 20, 04:20 UTCJul 20, 05:55 UTC1h 35m
2026-07-20 CES721 SHA → HKG Jul 20, 02:20 UTCJul 20, 02:40 UTC20m
2026-07-19 CES5314 - Jul 19, 14:30 UTCJul 19, 14:40 UTC10m
2026-07-17 CES722 - Jul 17, 04:29 UTCJul 17, 05:45 UTC1h 15m
2026-07-17 CES721 SHA → HKG Jul 17, 02:34 UTCJul 17, 02:54 UTC20m
2026-07-16 CES722 - Jul 16, 05:20 UTCJul 17, 01:59 UTC20h 40m
2026-07-16 CES722 - Jul 16, 04:35 UTCJul 17, 01:59 UTC21h 25m
2026-07-16 CES721 - Jul 16, 01:30 UTCJul 16, 02:25 UTC55m
2026-07-15 CES721 - Jul 15, 05:20 UTCJul 16, 02:25 UTC21h 5m
2026-07-15 CES722 HKG → HKG Jul 15, 04:30 UTCJul 16, 02:25 UTC21h 55m
2026-07-15 CES721 - Jul 15, 01:55 UTCJul 15, 02:45 UTC50m
2026-07-14 CES721 - Jul 14, 05:20 UTCJul 15, 02:45 UTC21h 24m
2026-07-14 CES721 HKG → HKG Jul 14, 04:35 UTCJul 15, 02:45 UTC22h 9m
2026-07-14 CES721 - Jul 14, 01:20 UTCJul 14, 02:30 UTC1h 10m
2026-07-13 CES721 - Jul 13, 05:20 UTCJul 14, 02:30 UTC21h 10m
2026-07-13 CES722 HKG → HKG Jul 13, 04:40 UTCJul 14, 02:30 UTC21h 50m
2026-07-13 CES721 - Jul 13, 01:55 UTCJul 13, 02:45 UTC50m
2026-07-12 CES722 HKG → HKG Jul 12, 06:01 UTCJul 13, 02:45 UTC20h 45m
2026-07-12 CES721 - Jul 12, 04:15 UTCJul 12, 04:35 UTC20m
2026-07-11 CES722 - Jul 11, 04:25 UTCJul 11, 04:50 UTC25m
2026-07-11 CES721 - Jul 11, 02:00 UTCJul 11, 02:35 UTC35m
2026-07-10 CES722 - Jul 10, 04:30 UTCJul 10, 05:30 UTC1h 0m
2026-07-10 CES721 - Jul 10, 01:35 UTCJul 10, 02:30 UTC55m
2026-07-09 CES721 - Jul 9, 05:20 UTCJul 10, 02:30 UTC21h 10m
2026-07-09 CES722 HKG → HKG Jul 9, 04:30 UTCJul 10, 02:30 UTC22h 0m
2026-07-09 CES721 - Jul 9, 02:00 UTCJul 9, 02:40 UTC40m
2026-07-08 CES721 - Jul 8, 05:20 UTCJul 9, 02:40 UTC21h 20m
2026-07-08 CES722 HKG → HKG Jul 8, 04:45 UTCJul 9, 02:40 UTC21h 55m
2026-07-08 CES721 - Jul 8, 01:55 UTCJul 8, 03:10 UTC1h 15m
2026-07-07 CES721 - Jul 7, 05:20 UTCJul 8, 03:10 UTC21h 50m
2026-07-07 CES722 HKG → HKG Jul 7, 04:50 UTCJul 8, 03:10 UTC22h 20m
2026-07-07 CES721 - Jul 7, 02:30 UTCJul 7, 03:05 UTC35m
2026-07-07 CES721 - Jul 7, 01:45 UTCJul 7, 01:55 UTC10m
2026-07-06 CES722 - Jul 6, 04:35 UTCJul 6, 06:05 UTC1h 30m
2026-07-06 CES721 - Jul 6, 01:25 UTCJul 6, 02:30 UTC1h 5m
2026-07-05 CES721 - Jul 5, 05:35 UTCJul 6, 02:30 UTC20h 55m
2026-07-05 CES721 HKG → HKG Jul 5, 04:15 UTCJul 6, 02:30 UTC22h 15m
2026-07-05 CES721 - Jul 5, 02:05 UTCJul 5, 02:20 UTC15m

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 7823FD frequently asked

What is Mode-S code 7823FD?
7823FD is an ICAO 24-bit transponder address. Allocated to China.
Where is Mode-S 7823FD registered?
Mode-S code 7823FD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7823FD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 09:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7823FD, octal 36021775, decimal 7,873,533.
What flights does 7823FD operate?
Mode-S 7823FD has broadcast 20 distinct callsigns, including CES721, CES722, CES5692, CES5164, CES5154.