Apparatus

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sensors Mode-S transponder

7BB053

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2983 · BOEING 737-300

Hex
7BB053
Octal
36730123
Decimal
8,106,067
Country
CN
Tail
B-2983
Type
B733
No current signal · last broadcast 6d ago
Flights observed
78
Distinct callsigns
20
Country
CN
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 7BB053.

Country allocation

The ICAO 24-bit address 7BB053 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
CSS6924 - 14 2026-07-09
CSS6831 - 10 2026-07-24
CSS6832 - 8 2026-07-24
CSS6923 - 7 2026-07-10
CSS6927 - 4 2026-07-08
CSS6848 - 4 2026-06-11
CSS6847 - 4 2026-06-11
CSS7224 SF Airlines 3 2026-05-03
CSS6929 - 3 2026-07-09
CSS7067 - 2 2026-04-16
CSS6938 - 2 2026-05-18
CSS6836 SF Airlines 2 2026-05-02
CSS7240 SF Airlines 1 2026-05-05
CSS7120 SF Airlines 1 2026-05-05
CSS6937 - 1 2026-05-17
CSS6833 - 1 2026-06-12
CSS6814 SF Airlines 1 2026-05-15
CSS6813 SF Airlines 1 2026-05-14
CSS680T - 1 2026-06-03
CSS6807 - 1 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CSS6831 - Jul 24, 20:00 UTCJul 24, 20:10 UTC10m
2026-07-24 CSS6832 - Jul 24, 00:10 UTCJul 24, 00:30 UTC20m
2026-07-23 CSS6831 - Jul 23, 19:55 UTCJul 23, 20:10 UTC15m
2026-07-23 CSS6832 - Jul 23, 00:15 UTCJul 23, 00:25 UTC10m
2026-07-22 CSS6831 - Jul 22, 19:55 UTCJul 22, 20:05 UTC10m
2026-07-22 CSS6832 - Jul 22, 00:00 UTCJul 22, 00:10 UTC10m
2026-07-21 CSS6831 - Jul 21, 19:55 UTCJul 21, 20:05 UTC10m
2026-07-21 CSS6832 - Jul 21, 00:20 UTCJul 21, 00:40 UTC20m
2026-07-17 CSS266 - Jul 17, 01:15 UTCJul 17, 01:45 UTC30m
2026-07-16 CSS265 - Jul 16, 23:20 UTCJul 17, 00:04 UTC45m
2026-07-15 CSS6803 - Jul 15, 17:10 UTCJul 15, 17:20 UTC10m
2026-07-15 CSS6832 - Jul 15, 01:45 UTCJul 15, 01:55 UTC10m
2026-07-14 CSS6831 - Jul 14, 19:40 UTCJul 14, 19:55 UTC15m
2026-07-13 CSS6802 - Jul 13, 20:40 UTCJul 13, 20:55 UTC15m
2026-07-12 CSS6805 - Jul 12, 16:45 UTCJul 12, 16:55 UTC10m
2026-07-11 CSS6804 - Jul 11, 21:15 UTCJul 11, 21:25 UTC10m
2026-07-10 CSS6831 - Jul 10, 20:00 UTCJul 10, 20:10 UTC10m
2026-07-10 CSS6923 - Jul 10, 18:15 UTCJul 10, 18:35 UTC20m
2026-07-09 CSS6924 - Jul 9, 20:15 UTCJul 9, 20:25 UTC10m
2026-07-09 CSS6929 - Jul 9, 18:35 UTCJul 9, 19:05 UTC30m
2026-07-08 CSS6924 - Jul 8, 20:55 UTCJul 8, 21:05 UTC10m
2026-07-08 CSS6927 - Jul 8, 18:40 UTCJul 8, 19:20 UTC40m
2026-07-07 CSS6924 - Jul 7, 20:35 UTCJul 7, 20:45 UTC10m
2026-07-07 CSS6929 - Jul 7, 18:50 UTCJul 7, 19:05 UTC15m
2026-07-06 CSS6924 - Jul 6, 23:25 UTCJul 6, 23:35 UTC10m
2026-07-06 CSS6927 - Jul 6, 21:15 UTCJul 6, 21:40 UTC25m
2026-07-03 CSS6924 - Jul 3, 20:50 UTCJul 3, 21:00 UTC10m
2026-07-03 CSS6927 - Jul 3, 19:00 UTCJul 3, 19:20 UTC20m
2026-07-02 CSS6924 - Jul 2, 20:25 UTCJul 2, 20:35 UTC10m
2026-07-01 CSS6832 - Jul 1, 23:55 UTCJul 2, 00:05 UTC10m
2026-07-01 CSS6831 - Jul 1, 19:55 UTCJul 1, 20:05 UTC10m
2026-07-01 CSS6923 - Jul 1, 18:15 UTCJul 1, 18:30 UTC15m
2026-06-30 CSS6923 - Jun 30, 18:55 UTCJun 30, 19:05 UTC10m
2026-06-29 CSS6924 - Jun 29, 20:35 UTCJun 29, 20:44 UTC10m
2026-06-26 CSS6924 SZX → WUH Jun 26, 20:44 UTCJun 26, 20:59 UTC15m
2026-06-26 CSS6927 - Jun 26, 18:54 UTCJun 26, 19:04 UTC10m
2026-06-25 CSS6924 SZX → WUH Jun 25, 20:54 UTCJun 25, 21:05 UTC10m
2026-06-25 CSS6929 - Jun 25, 18:55 UTCJun 25, 19:15 UTC20m
2026-06-24 CSS6924 SZX → WUH Jun 24, 20:40 UTCJun 24, 20:54 UTC15m
2026-06-24 CSS6923 - Jun 24, 18:50 UTCJun 24, 19:00 UTC10m
2026-06-23 CSS6924 SZX → WUH Jun 23, 20:40 UTCJun 23, 20:49 UTC10m
2026-06-23 CSS6923 - Jun 23, 18:25 UTCJun 23, 18:39 UTC15m
2026-06-22 CSS6924 SZX → WUH Jun 22, 20:34 UTCJun 22, 20:49 UTC15m
2026-06-22 CSS6923 - Jun 22, 18:24 UTCJun 22, 18:35 UTC10m
2026-06-21 CSS6924 SZX → WUH Jun 21, 21:44 UTCJun 21, 22:00 UTC15m
2026-06-21 CSS6923 - Jun 21, 18:10 UTCJun 21, 18:20 UTC10m
2026-06-14 CSS6924 SZX → WUH Jun 14, 19:40 UTCJun 14, 19:50 UTC10m
2026-06-12 CSS6833 - Jun 12, 18:15 UTCJun 12, 18:25 UTC10m
2026-06-11 CSS6848 - Jun 11, 20:05 UTCJun 11, 21:00 UTC55m
2026-06-11 CSS6847 - Jun 11, 18:25 UTCJun 11, 18:40 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-2983 page for operator, model, and routing details .

Mode-S 7BB053 frequently asked

What is Mode-S code 7BB053?
7BB053 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2983.
Where is Mode-S 7BB053 registered?
Mode-S code 7BB053 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7BB053 broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7BB053, octal 36730123, decimal 8,106,067.
What flights does 7BB053 operate?
Mode-S 7BB053 has broadcast 20 distinct callsigns, including CSS6924, CSS6831, CSS6832, CSS6923, CSS6927.