Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7820DD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-225Q · BOEING 737 MAX 8

Hex
7820DD
Octal
36020335
Decimal
7,872,733
Country
CN
Tail
B-225Q
Type
B38M
No current signal · last broadcast 4d ago
Flights observed
66
Distinct callsigns
20
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 7820DD.

Country allocation

The ICAO 24-bit address 7820DD 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
CCA778 - 7 2026-05-28
CCA1901 Air China 6 2026-05-29
CCA1902 Air China 5 2026-05-29
CCA1296 Air China 5 2026-05-07
CCA1295 Air China 5 2026-05-29
CCA1256 - 4 2026-05-25
CCA777 - 3 2026-05-28
CCA713 Air China 3 2026-05-14
CCA1255 - 3 2026-05-07
CCA1274 Air China 2 2026-05-21
CCA1273 Air China 2 2026-05-21
CCA902 Air China 1 2026-05-19
CCA901 Air China 1 2026-05-19
CCA714 Air China 1 2026-04-18
CCA1974 Air China 1 2026-04-26
CCA1973 Air China 1 2026-04-26
CCA1816 Air China 1 2026-05-20
CCA1722 Air China 1 2026-05-17
CCA1601 Air China 1 2026-05-27
CCA1491 Air China 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CCA1295 PEK → URC May 29, 12:35 UTCMay 29, 12:50 UTC15m
2026-05-29 CCA1902 URC → PEK May 29, 09:45 UTCMay 29, 10:05 UTC20m
2026-05-29 CCA1901 PEK → URC May 29, 01:25 UTCMay 29, 01:40 UTC15m
2026-05-28 CCA778 - May 28, 20:35 UTCMay 28, 20:50 UTC15m
2026-05-28 CCA777 - May 28, 08:00 UTCMay 28, 08:15 UTC15m
2026-05-27 CCA1601 PEK → SHE May 27, 13:10 UTCMay 27, 13:20 UTC10m
2026-05-27 CCA1246 HTN → PEK May 27, 10:10 UTCMay 27, 10:30 UTC20m
2026-05-26 CCA1245 PEK → HTN May 26, 23:49 UTCMay 27, 00:00 UTC10m
2026-05-26 CCA778 - May 26, 20:40 UTCMay 26, 21:00 UTC20m
2026-05-26 CCA1431 PEK → CKG May 26, 00:14 UTCMay 26, 00:35 UTC20m
2026-05-25 CCA1256 - May 25, 16:45 UTCMay 25, 17:05 UTC20m
2026-05-25 CCA108 HKG → PEK May 25, 02:40 UTCMay 25, 02:55 UTC15m
2026-05-24 CCA107 PEK → HKG May 24, 13:00 UTCMay 24, 13:30 UTC30m
2026-05-22 CCA1901 PEK → URC May 22, 01:40 UTCMay 22, 02:05 UTC25m
2026-05-21 CCA778 - May 21, 20:55 UTCMay 21, 21:10 UTC15m
2026-05-21 CCA777 - May 21, 08:10 UTCMay 21, 08:25 UTC15m
2026-05-21 CCA1274 LHW → PEK May 21, 06:05 UTCMay 21, 06:20 UTC15m
2026-05-21 CCA1273 PEK → LHW May 21, 01:00 UTCMay 21, 01:25 UTC25m
2026-05-20 CCA1816 XMN → PEK May 20, 14:55 UTCMay 20, 15:05 UTC10m
2026-05-20 CCA1491 PEK → WMT May 20, 00:40 UTCMay 20, 01:00 UTC20m
2026-05-19 CCA778 - May 19, 20:45 UTCMay 19, 21:05 UTC20m
2026-05-19 CCA902 UBN → PEK May 19, 05:15 UTCMay 19, 05:35 UTC20m
2026-05-19 CCA901 PEK → UBN May 19, 01:00 UTCMay 19, 01:10 UTC10m
2026-05-18 CCA1389 PEK → CSX May 18, 00:45 UTCMay 18, 01:10 UTC25m
2026-05-17 CCA1722 CAN → HGH May 17, 08:55 UTCMay 17, 09:05 UTC10m
2026-05-14 CCA713 URC → SVO May 14, 12:50 UTCMay 14, 20:50 UTC8h 0m
2026-05-09 CCA1295 PEK → URC May 9, 12:40 UTCMay 9, 12:55 UTC15m
2026-05-09 CCA1446 KMG → PEK May 9, 10:40 UTCMay 9, 11:00 UTC20m
2026-05-09 CCA1445 PEK → KMG May 9, 02:45 UTCMay 9, 03:10 UTC25m
2026-05-08 CCA1462 KWE → PEK May 8, 06:09 UTCMay 8, 06:20 UTC10m
2026-05-07 CCA1461 PEK → KWE May 7, 23:14 UTCMay 7, 23:45 UTC30m
2026-05-07 CCA1256 - May 7, 16:55 UTCMay 7, 17:10 UTC15m
2026-05-07 CCA1255 - May 7, 07:30 UTCMay 7, 07:50 UTC20m
2026-05-07 CCA1296 URC → PEK May 7, 05:15 UTCMay 7, 05:30 UTC15m
2026-05-06 CCA1295 PEK → URC May 6, 12:30 UTCMay 6, 12:50 UTC20m
2026-05-06 CCA1902 URC → PEK May 6, 09:40 UTCMay 6, 10:01 UTC20m
2026-05-06 CCA1901 PEK → URC May 6, 01:35 UTCMay 6, 01:50 UTC15m
2026-05-05 CCA778 - May 5, 08:00 UTCMay 5, 21:10 UTC13h 10m
2026-05-04 CCA1292 URC → PEK May 4, 16:00 UTCMay 4, 16:35 UTC35m
2026-05-04 CCA1296 URC → PEK May 4, 05:10 UTCMay 4, 05:25 UTC15m
2026-04-30 CCA1295 PEK → URC Apr 30, 12:45 UTCApr 30, 13:05 UTC20m
2026-04-30 CCA1902 URC → PEK Apr 30, 10:05 UTCApr 30, 10:20 UTC15m
2026-04-30 CCA1901 PEK → URC Apr 30, 01:35 UTCApr 30, 01:45 UTC10m
2026-04-29 CCA1256 - Apr 29, 17:15 UTCApr 29, 17:30 UTC15m
2026-04-29 CCA1255 - Apr 29, 08:05 UTCApr 29, 08:15 UTC10m
2026-04-29 CCA1296 URC → PEK Apr 29, 05:50 UTCApr 29, 06:10 UTC20m
2026-04-28 CCA713 URC → SVO Apr 28, 12:50 UTCApr 28, 20:55 UTC8h 5m
2026-04-26 CCA1973 PEK → URC Apr 26, 13:15 UTCApr 26, 13:35 UTC20m
2026-04-26 CCA1974 URC → PEK Apr 26, 09:55 UTCApr 26, 10:15 UTC20m
2026-04-24 CCA1902 URC → PEK Apr 24, 09:50 UTCApr 24, 10:10 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-225Q page for operator, model, and routing details .

Mode-S 7820DD frequently asked

What is Mode-S code 7820DD?
7820DD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-225Q.
Where is Mode-S 7820DD registered?
Mode-S code 7820DD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820DD broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820DD, octal 36020335, decimal 7,872,733.
What flights does 7820DD operate?
Mode-S 7820DD has broadcast 20 distinct callsigns, including CCA778, CCA1901, CCA1902, CCA1296, CCA1295.