Apparatus

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sensors Mode-S transponder

7821A5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32JU · AIRBUS A-320neo

Hex
7821A5
Octal
36020645
Decimal
7,872,933
Country
CN
Tail
B-32JU
Type
A20N
No current signal · last broadcast Jul 26, 11:55 UTC
Flights observed
78
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 11:55 UTC

Last known position

Most recent position reported by Mode-S 7821A5.

Country allocation

The ICAO 24-bit address 7821A5 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
DKH2010 - 9 2026-06-27
DKH2009 - 7 2026-06-25
DKH1562 - 7 2026-07-05
DKH1561 - 7 2026-07-05
DKH1271 - 6 2026-07-12
DKH1365 Juneyao Airlines 5 2026-07-25
DKH1601 - 4 2026-07-10
DKH1366 Juneyao Airlines 4 2026-07-25
DKH1354 Juneyao Airlines 4 2026-07-22
DKH1353 Juneyao Airlines 4 2026-07-22
DKH1192 - 4 2026-06-29
DKH2117 - 3 2026-06-30
DKH1575 Juneyao Airlines 3 2026-07-20
DKH1576 Juneyao Airlines 2 2026-07-20
DKH1307 Juneyao Airlines 2 2026-06-11
DKH2380 - 1 2026-07-23
DKH1946 - 1 2026-06-17
DKH1602 - 1 2026-07-12
DKH1564 - 1 2026-07-02
DKH1563 - 1 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DKH1035 - Jul 26, 11:35 UTCJul 26, 11:55 UTC20m
2026-07-25 DKH1366 PEN → PVG Jul 25, 17:10 UTCJul 25, 17:20 UTC10m
2026-07-25 DKH1365 PVG → PEN Jul 25, 15:45 UTCJul 25, 16:00 UTC15m
2026-07-23 DKH2380 - Jul 23, 16:10 UTCJul 23, 16:25 UTC15m
2026-07-22 DKH1354 KUL → PVG Jul 22, 17:20 UTCJul 23, 14:05 UTC20h 45m
2026-07-22 DKH1354 KUL → PVG Jul 22, 16:50 UTCJul 23, 14:05 UTC21h 15m
2026-07-22 DKH1353 PVG → KUL Jul 22, 11:30 UTCJul 22, 15:05 UTC3h 35m
2026-07-20 DKH1576 SIN → PVG Jul 20, 16:25 UTCJul 20, 20:05 UTC3h 40m
2026-07-20 DKH1575 PVG → SIN Jul 20, 00:45 UTCJul 20, 13:55 UTC13h 10m
2026-07-13 DKH1576 - Jul 13, 16:05 UTCJul 14, 00:50 UTC8h 45m
2026-07-13 DKH1575 - Jul 13, 00:55 UTCJul 13, 14:40 UTC13h 45m
2026-07-12 DKH1271 - Jul 12, 12:10 UTCJul 13, 11:05 UTC22h 55m
2026-07-12 DKH1602 - Jul 12, 08:40 UTCJul 13, 05:01 UTC20h 20m
2026-07-10 DKH1601 - Jul 10, 12:40 UTCJul 11, 07:05 UTC18h 25m
2026-07-10 DKH1601 - Jul 10, 09:20 UTCJul 11, 07:05 UTC21h 45m
2026-07-10 DKH1601 - Jul 10, 09:00 UTCJul 11, 07:05 UTC22h 5m
2026-07-09 DKH1601 - Jul 9, 16:25 UTCJul 10, 06:55 UTC14h 30m
2026-07-09 DKH1575 - Jul 9, 02:30 UTCJul 9, 15:00 UTC12h 30m
2026-07-07 DKH1366 - Jul 7, 19:35 UTCJul 7, 20:25 UTC50m
2026-07-07 DKH1366 - Jul 7, 16:10 UTCJul 7, 16:20 UTC10m
2026-07-07 DKH1365 - Jul 7, 14:30 UTCJul 7, 14:45 UTC15m
2026-07-07 DKH1271 - Jul 7, 00:35 UTCJul 7, 11:45 UTC11h 10m
2026-07-06 DKH1271 - Jul 6, 16:35 UTCJul 7, 11:45 UTC19h 10m
2026-07-05 DKH1562 - Jul 5, 23:10 UTCJul 6, 16:45 UTC17h 35m
2026-07-05 DKH1562 - Jul 5, 20:05 UTCJul 6, 16:45 UTC20h 40m
2026-07-05 DKH1561 - Jul 5, 06:15 UTCJul 5, 18:30 UTC12h 15m
2026-07-03 DKH1562 - Jul 3, 20:50 UTCJul 4, 00:45 UTC3h 55m
2026-07-03 DKH1561 - Jul 3, 16:20 UTCJul 3, 19:30 UTC3h 10m
2026-07-03 DKH1561 - Jul 3, 00:10 UTCJul 3, 19:30 UTC19h 20m
2026-07-02 DKH1564 - Jul 2, 20:45 UTCJul 3, 19:15 UTC22h 30m
2026-07-02 DKH1563 - Jul 2, 15:40 UTCJul 2, 19:15 UTC3h 35m
2026-06-30 DKH2117 - Jun 30, 22:55 UTCJul 1, 00:00 UTC1h 5m
2026-06-29 DKH1192 - Jun 29, 13:44 UTCJun 30, 04:15 UTC14h 31m
2026-06-28 DKH1562 - Jun 28, 19:59 UTCJun 29, 14:19 UTC18h 20m
2026-06-28 DKH1561 - Jun 28, 09:34 UTCJun 28, 18:44 UTC9h 10m
2026-06-27 DKH2010 - Jun 27, 11:44 UTCJun 28, 07:05 UTC19h 20m
2026-06-27 DKH2010 - Jun 27, 11:00 UTCJun 28, 07:05 UTC20h 5m
2026-06-27 DKH2010 - Jun 27, 08:05 UTCJun 28, 07:05 UTC23h 0m
2026-06-25 DKH2009 - Jun 25, 06:35 UTCJun 25, 10:20 UTC3h 45m
2026-06-23 DKH2117 - Jun 23, 23:00 UTCJun 23, 23:59 UTC1h 0m
2026-06-23 DKH1271 - Jun 23, 00:39 UTCJun 23, 14:49 UTC14h 10m
2026-06-22 DKH1271 - Jun 22, 14:14 UTCJun 23, 04:55 UTC14h 40m
2026-06-21 DKH1192 CGQ → PVG Jun 21, 20:05 UTCJun 22, 14:49 UTC18h 45m
2026-06-21 DKH1561 - Jun 21, 06:44 UTCJun 21, 18:35 UTC11h 50m
2026-06-20 DKH2009 - Jun 20, 09:49 UTCJun 21, 07:20 UTC21h 30m
2026-06-20 DKH2010 - Jun 20, 06:35 UTCJun 20, 10:04 UTC3h 30m
2026-06-19 DKH2010 - Jun 19, 11:20 UTCJun 20, 10:04 UTC22h 45m
2026-06-19 DKH2009 - Jun 19, 07:49 UTCJun 20, 06:45 UTC22h 55m
2026-06-17 DKH2117 - Jun 17, 23:25 UTCJun 18, 00:35 UTC1h 10m
2026-06-17 DKH1946 - Jun 17, 18:00 UTCJun 17, 18:20 UTC20m

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

Mode-S 7821A5 frequently asked

What is Mode-S code 7821A5?
7821A5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32JU.
Where is Mode-S 7821A5 registered?
Mode-S code 7821A5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7821A5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7821A5, octal 36020645, decimal 7,872,933.
What flights does 7821A5 operate?
Mode-S 7821A5 has broadcast 20 distinct callsigns, including DKH2010, DKH2009, DKH1562, DKH1561, DKH1271.