Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7820BC

ICAO 24-bit transponder address · allocated to China

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

Hex
7820BC
Octal
36020274
Decimal
7,872,700
Country
CN
Tail
B-225K
Type
B38M
No current signal · last broadcast Jul 26, 13:35 UTC
Flights observed
346
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:35 UTC

Last known position

Most recent position reported by Mode-S 7820BC.

Country allocation

The ICAO 24-bit address 7820BC 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
CSZ240 Shenzhen Airlines 28 2026-07-21
CSZ239 Shenzhen Airlines 25 2026-07-21
CSZ652 - 21 2026-07-03
CSZ330 - 18 2026-07-18
CSZ329 - 18 2026-07-18
CSZ661 - 17 2026-07-12
CSZ651 - 17 2026-07-03
CSZ662 - 16 2026-07-12
CSZ118 - 13 2026-07-17
CSZ117 - 13 2026-07-17
CSZ102 - 11 2026-07-18
CSZ101 Shenzhen Airlines 11 2026-07-18
CSZ8937 - 9 2026-07-10
CSZ9924 - 8 2026-06-30
CSZ8938 - 8 2026-07-10
CSZ9918 - 7 2026-07-09
CSZ9917 - 7 2026-07-09
CSZ9923 - 6 2026-06-29
CSZ9852 - 6 2026-06-24
CSZ9638 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ9850 NKG → SZX Jul 26, 13:25 UTCJul 26, 13:35 UTC10m
2026-07-25 CSZ8920 YNT → SZX Jul 25, 05:50 UTCJul 25, 07:15 UTC1h 25m
2026-07-23 CSZ9127 SZX → HET Jul 23, 09:10 UTCJul 23, 09:20 UTC10m
2026-07-23 CSZ9232 - Jul 23, 07:15 UTCJul 23, 07:25 UTC10m
2026-07-23 CSZ9231 - Jul 23, 00:20 UTCJul 23, 00:35 UTC15m
2026-07-22 CSZ9528 PVG → SZX Jul 22, 16:50 UTCJul 22, 17:10 UTC20m
2026-07-22 CSZ9528 PVG → SZX Jul 22, 01:30 UTCJul 22, 16:15 UTC14h 45m
2026-07-21 CSZ9146 SJW → SZX Jul 21, 17:45 UTCJul 21, 17:55 UTC10m
2026-07-21 CSZ240 SIN → SZX Jul 21, 09:55 UTCJul 21, 10:15 UTC20m
2026-07-21 CSZ240 SIN → SZX Jul 21, 06:25 UTCJul 21, 06:50 UTC25m
2026-07-21 CSZ239 SZX → SIN Jul 21, 04:15 UTCJul 21, 05:10 UTC55m
2026-07-21 CSZ239 SZX → SIN Jul 21, 01:30 UTCJul 21, 01:40 UTC10m
2026-07-20 CSZ9128 HET → SZX Jul 20, 16:15 UTCJul 20, 16:35 UTC20m
2026-07-20 CSZ9127 SZX → HET Jul 20, 09:35 UTCJul 20, 09:45 UTC10m
2026-07-20 CSZ9231 - Jul 20, 00:50 UTCJul 20, 01:05 UTC15m
2026-07-19 CSZ9304 CGO → SZX Jul 19, 11:55 UTCJul 19, 12:05 UTC10m
2026-07-19 CSZ9303 - Jul 19, 06:45 UTCJul 19, 06:55 UTC10m
2026-07-18 CSZ330 - Jul 18, 15:30 UTCJul 18, 15:50 UTC20m
2026-07-18 CSZ330 - Jul 18, 12:00 UTCJul 18, 12:30 UTC30m
2026-07-18 CSZ329 - Jul 18, 10:10 UTCJul 18, 10:45 UTC35m
2026-07-18 CSZ329 - Jul 18, 07:10 UTCJul 18, 07:20 UTC10m
2026-07-18 CSZ102 - Jul 18, 05:25 UTCJul 18, 05:35 UTC10m
2026-07-18 CSZ102 - Jul 18, 04:15 UTCJul 18, 04:25 UTC10m
2026-07-18 CSZ101 SZX → HAN Jul 18, 01:54 UTCJul 18, 02:05 UTC10m
2026-07-18 CSZ101 SZX → HAN Jul 18, 00:50 UTCJul 18, 01:05 UTC15m
2026-07-17 CSZ118 - Jul 17, 22:35 UTCJul 17, 23:00 UTC25m
2026-07-17 CSZ117 - Jul 17, 17:05 UTCJul 17, 17:15 UTC10m
2026-07-17 CSZ330 - Jul 17, 15:20 UTCJul 17, 15:40 UTC20m
2026-07-17 CSZ330 - Jul 17, 11:50 UTCJul 17, 12:19 UTC30m
2026-07-17 CSZ329 - Jul 17, 10:05 UTCJul 17, 10:25 UTC20m
2026-07-17 CSZ102 - Jul 17, 04:10 UTCJul 17, 04:20 UTC10m
2026-07-17 CSZ101 - Jul 17, 01:15 UTCJul 17, 01:29 UTC15m
2026-07-16 CSZ330 - Jul 16, 19:25 UTCJul 16, 19:40 UTC15m
2026-07-16 CSZ330 - Jul 16, 16:00 UTCJul 16, 16:25 UTC25m
2026-07-16 CSZ329 - Jul 16, 14:25 UTCJul 16, 14:40 UTC15m
2026-07-16 CSZ329 - Jul 16, 11:05 UTCJul 16, 11:15 UTC10m
2026-07-16 CSZ328 - Jul 16, 08:50 UTCJul 16, 09:05 UTC15m
2026-07-16 CSZ328 - Jul 16, 05:15 UTCJul 16, 05:45 UTC30m
2026-07-16 CSZ327 - Jul 16, 03:25 UTCJul 16, 03:50 UTC25m
2026-07-16 CSZ327 - Jul 16, 00:15 UTCJul 16, 00:30 UTC15m
2026-07-15 CSZ330 - Jul 15, 17:55 UTCJul 15, 18:45 UTC50m
2026-07-15 CSZ330 - Jul 15, 14:30 UTCJul 15, 15:00 UTC30m
2026-07-15 CSZ329 - Jul 15, 12:40 UTCJul 15, 13:00 UTC20m
2026-07-15 CSZ329 - Jul 15, 09:35 UTCJul 15, 09:45 UTC10m
2026-07-15 CSZ102 - Jul 15, 07:30 UTCJul 15, 07:40 UTC10m
2026-07-15 CSZ102 - Jul 15, 05:50 UTCJul 15, 06:10 UTC20m
2026-07-15 CSZ101 - Jul 15, 03:40 UTCJul 15, 04:00 UTC20m
2026-07-15 CSZ101 - Jul 15, 02:50 UTCJul 15, 03:05 UTC15m
2026-07-14 CSZ9146 - Jul 14, 17:55 UTCJul 14, 18:20 UTC25m
2026-07-14 CSZ9145 - Jul 14, 11:55 UTCJul 14, 12:10 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.

Prefer a tail-number view? See the B-225K page for operator, model, and routing details .

Mode-S 7820BC frequently asked

What is Mode-S code 7820BC?
7820BC is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-225K.
Where is Mode-S 7820BC registered?
Mode-S code 7820BC is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820BC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820BC, octal 36020274, decimal 7,872,700.
What flights does 7820BC operate?
Mode-S 7820BC has broadcast 20 distinct callsigns, including CSZ240, CSZ239, CSZ652, CSZ330, CSZ329.