Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7821FD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32KU · AIRBUS A-321neo

Hex
7821FD
Octal
36020775
Decimal
7,873,021
Country
CN
Tail
B-32KU
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
140
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7821FD.

Country allocation

The ICAO 24-bit address 7821FD 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
CES212 - 7 2026-07-09
CES211 - 7 2026-07-09
CES2007 - 7 2026-06-14
CES5379 - 6 2026-06-28
CES272 - 6 2026-07-03
CES271 - 6 2026-07-02
CES529 - 5 2026-07-12
CES5011 China Eastern Airlines 5 2026-06-04
CES5088 - 4 2026-06-22
CES506 China Eastern Airlines 4 2026-06-10
CES505 China Eastern Airlines 4 2026-06-10
CES724 - 3 2026-06-22
CES6050 - 3 2026-07-15
CES5692 China Eastern Airlines 3 2026-06-13
CES518 - 3 2026-07-13
CES509 China Eastern Airlines 3 2026-05-28
CES280 China Eastern Airlines 3 2026-05-20
CES2008 - 3 2026-06-15
CES7403 - 2 2026-07-16
CES723 - 2 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CES5343 - Jul 18, 09:50 UTCJul 18, 10:10 UTC20m
2026-07-17 CES7366 - Jul 17, 14:35 UTCJul 17, 15:49 UTC1h 15m
2026-07-17 CES723 - Jul 17, 06:40 UTCJul 17, 12:50 UTC6h 10m
2026-07-16 CES7403 - Jul 16, 12:09 UTCJul 17, 05:15 UTC17h 5m
2026-07-16 CES7403 - Jul 16, 08:35 UTCJul 17, 05:15 UTC20h 40m
2026-07-15 CES6294 - Jul 15, 15:25 UTCJul 16, 12:49 UTC21h 25m
2026-07-15 CES6050 - Jul 15, 14:10 UTCJul 16, 12:49 UTC22h 40m
2026-07-15 CES6050 - Jul 15, 11:20 UTCJul 16, 08:50 UTC21h 30m
2026-07-15 CES6050 - Jul 15, 11:00 UTCJul 16, 08:50 UTC21h 50m
2026-07-14 CES6049 - Jul 14, 20:35 UTCJul 15, 09:25 UTC12h 49m
2026-07-14 CES6049 - Jul 14, 13:50 UTCJul 15, 09:25 UTC19h 34m
2026-07-14 CES5158 - Jul 14, 07:00 UTCJul 14, 07:10 UTC10m
2026-07-13 CES518 - Jul 13, 05:31 UTCJul 13, 05:50 UTC20m
2026-07-13 CES517 - Jul 13, 03:01 UTCJul 13, 03:15 UTC15m
2026-07-12 CES530 - Jul 12, 11:10 UTCJul 12, 12:20 UTC1h 10m
2026-07-12 CES529 - Jul 12, 08:45 UTCJul 12, 09:50 UTC1h 5m
2026-07-11 CES6012 - Jul 11, 09:05 UTCJul 11, 09:20 UTC15m
2026-07-10 CES294 - Jul 10, 04:40 UTCJul 10, 05:25 UTC45m
2026-07-09 CES212 MNL → HIJ Jul 9, 18:25 UTCJul 10, 03:30 UTC9h 5m
2026-07-09 CES211 - Jul 9, 14:40 UTCJul 9, 17:00 UTC2h 20m
2026-07-08 CES5392 - Jul 8, 09:20 UTCJul 8, 09:40 UTC20m
2026-07-08 CES5391 - Jul 8, 05:20 UTCJul 8, 06:25 UTC1h 5m
2026-07-07 CES5391 - Jul 7, 08:30 UTCJul 8, 06:25 UTC21h 55m
2026-07-06 CES212 - Jul 6, 18:30 UTCJul 7, 08:30 UTC14h 0m
2026-07-06 CES211 ICN → MNL Jul 6, 07:35 UTCJul 6, 16:55 UTC9h 20m
2026-07-06 CES5033 - Jul 6, 05:35 UTCJul 6, 06:15 UTC40m
2026-07-04 CES5023 - Jul 4, 08:20 UTCJul 4, 20:35 UTC12h 15m
2026-07-04 CES6011 - Jul 4, 05:35 UTCJul 4, 06:35 UTC1h 0m
2026-07-03 CES272 - Jul 3, 02:15 UTCJul 3, 04:05 UTC1h 50m
2026-07-02 CES271 - Jul 2, 04:45 UTCJul 2, 11:35 UTC6h 50m
2026-07-01 CES212 - Jul 1, 18:30 UTCJul 2, 03:15 UTC8h 45m
2026-07-01 CES211 - Jul 1, 14:30 UTCJul 1, 16:50 UTC2h 20m
2026-06-30 CES5549 - Jun 30, 08:10 UTCJun 30, 12:15 UTC4h 5m
2026-06-30 CES5154 - Jun 30, 03:50 UTCJun 30, 04:00 UTC10m
2026-06-29 CES212 - Jun 29, 18:55 UTCJun 29, 20:59 UTC2h 5m
2026-06-29 CES211 - Jun 29, 14:34 UTCJun 29, 17:05 UTC2h 30m
2026-06-28 CES5380 - Jun 28, 12:35 UTCJun 28, 14:09 UTC1h 35m
2026-06-28 CES5379 - Jun 28, 10:10 UTCJun 28, 10:24 UTC15m
2026-06-28 CES5379 - Jun 28, 08:14 UTCJun 28, 09:30 UTC1h 15m
2026-06-26 CES518 - Jun 26, 06:25 UTCJun 26, 06:45 UTC20m
2026-06-26 CES517 - Jun 26, 03:15 UTCJun 26, 03:29 UTC15m
2026-06-25 CES6034 - Jun 25, 05:29 UTCJun 25, 21:55 UTC16h 25m
2026-06-22 CES5088 - Jun 22, 09:19 UTCJun 22, 09:45 UTC25m
2026-06-22 CES724 - Jun 22, 02:10 UTCJun 22, 03:24 UTC1h 15m
2026-06-21 CES7365 - Jun 21, 23:14 UTCJun 22, 00:34 UTC1h 20m
2026-06-21 CES5342 - Jun 21, 05:20 UTCJun 21, 05:30 UTC10m
2026-06-21 CES5331 - Jun 21, 03:40 UTCJun 21, 03:59 UTC20m
2026-06-19 CES5068 - Jun 19, 08:20 UTCJun 19, 08:54 UTC35m
2026-06-19 CES5067 - Jun 19, 06:44 UTCJun 19, 07:09 UTC25m
2026-06-18 CES5380 - Jun 18, 08:50 UTCJun 18, 13:25 UTC4h 35m

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-32KU page for operator, model, and routing details .

Mode-S 7821FD frequently asked

What is Mode-S code 7821FD?
7821FD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32KU.
Where is Mode-S 7821FD registered?
Mode-S code 7821FD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7821FD broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7821FD, octal 36020775, decimal 7,873,021.
What flights does 7821FD operate?
Mode-S 7821FD has broadcast 20 distinct callsigns, including CES212, CES211, CES2007, CES5379, CES272.