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 Jul 26, 14:15 UTC
Flights observed
162
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:15 UTC

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
CES505 China Eastern Airlines 7 2026-07-26
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
CES506 China Eastern Airlines 5 2026-07-26
CES5024 China Eastern Airlines 5 2026-07-24
CES5011 China Eastern Airlines 5 2026-06-04
CES517 China Eastern Airlines 4 2026-07-26
CES5088 - 4 2026-06-22
CES280 China Eastern Airlines 4 2026-07-22
CES724 - 3 2026-06-22
CES6294 China Eastern Airlines 3 2026-07-25
CES6050 - 3 2026-07-15
CES5692 China Eastern Airlines 3 2026-06-13
CES5352 - 3 2026-07-18
CES518 - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CES506 HKG → PVG Jul 26, 12:40 UTCJul 26, 14:15 UTC1h 35m
2026-07-26 CES505 PVG → HKG Jul 26, 10:45 UTCJul 26, 10:55 UTC10m
2026-07-26 CES505 PVG → HKG Jul 26, 05:10 UTCJul 26, 10:05 UTC4h 56m
2026-07-26 CES517 PVG → FUK Jul 26, 02:55 UTCJul 26, 03:30 UTC35m
2026-07-25 CES6294 DQA → PVG Jul 25, 08:30 UTCJul 25, 21:55 UTC13h 25m
2026-07-24 CES6294 DQA → PVG Jul 24, 21:20 UTCJul 25, 16:45 UTC19h 25m
2026-07-24 CES5024 CEB → PVG Jul 24, 19:20 UTCJul 25, 16:45 UTC21h 25m
2026-07-24 CES5024 CEB → PVG Jul 24, 19:00 UTCJul 25, 16:45 UTC21h 45m
2026-07-24 CES5024 CEB → PVG Jul 24, 16:15 UTCJul 25, 12:25 UTC20h 10m
2026-07-24 CES5024 CEB → PVG Jul 24, 14:40 UTCJul 25, 12:25 UTC21h 45m
2026-07-24 CES5024 CEB → PVG Jul 24, 09:45 UTCJul 25, 08:35 UTC22h 50m
2026-07-24 CES5087 PVG → FUK Jul 24, 07:45 UTCJul 24, 08:25 UTC40m
2026-07-23 CES2086 MNL → PVG Jul 23, 06:00 UTCJul 23, 06:15 UTC15m
2026-07-23 CES2085 PVG → OKA Jul 23, 03:45 UTCJul 23, 04:10 UTC25m
2026-07-22 CES2085 PVG → OKA Jul 22, 05:25 UTCJul 23, 04:10 UTC22h 45m
2026-07-22 CES280 CTS → PVG Jul 22, 04:40 UTCJul 22, 05:25 UTC45m
2026-07-21 CES279 PVG → CTS Jul 21, 12:15 UTCJul 22, 03:10 UTC14h 55m
2026-07-21 CES505 PVG → HKG Jul 21, 05:15 UTCJul 21, 10:45 UTC5h 30m
2026-07-21 CES517 PVG → FUK Jul 21, 03:10 UTCJul 21, 03:40 UTC30m
2026-07-20 CES6400 - Jul 20, 13:00 UTCJul 20, 14:15 UTC1h 15m
2026-07-20 CES6399 - Jul 20, 09:40 UTCJul 20, 09:55 UTC15m
2026-07-18 CES5352 - Jul 18, 11:35 UTCJul 18, 11:45 UTC10m
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

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 Jul 26, 14:15 UTC.
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 CES505, CES212, CES211, CES2007, CES5379.