Apparatus

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sensors Mode-S transponder

7BB034

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2956 · BOEING 737-300

Hex
7BB034
Octal
36730064
Decimal
8,106,036
Country
CN
Tail
B-2956
Type
B733
No current signal · last broadcast 1d ago
Flights observed
36
Distinct callsigns
7
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7BB034.

Country allocation

The ICAO 24-bit address 7BB034 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 7 distinct

Callsign Airline Flights Last seen
CSS268 SF Airlines 15 2026-05-29
CSS267 SF Airlines 14 2026-05-29
CSS6813 SF Airlines 2 2026-04-16
CSS7240 SF Airlines 1 2026-04-19
CSS6836 SF Airlines 1 2026-06-17
CSS6810 - 1 2026-06-05
CSS6809 - 1 2026-06-17

Recent flights last 36

DateFlightRouteTakeoffLandingDuration
2026-06-17 CSS6809 - Jun 17, 16:20 UTCJun 17, 16:30 UTC10m
2026-06-17 CSS6836 HGH → SZX Jun 17, 01:00 UTCJun 17, 01:10 UTC10m
2026-06-05 CSS6810 - Jun 5, 21:20 UTCJun 5, 21:30 UTC10m
2026-05-29 CSS268 HKG → HKG May 29, 01:55 UTCMay 29, 02:10 UTC15m
2026-05-29 CSS267 HKG → HKG May 29, 00:20 UTCMay 29, 00:35 UTC15m
2026-05-28 CSS268 HKG → HKG May 28, 01:55 UTCMay 28, 02:10 UTC15m
2026-05-28 CSS267 HKG → HKG May 28, 00:10 UTCMay 28, 00:25 UTC15m
2026-05-27 CSS268 HKG → HKG May 27, 01:54 UTCMay 27, 02:09 UTC15m
2026-05-23 CSS268 HKG → HKG May 23, 01:30 UTCMay 23, 02:40 UTC1h 10m
2026-05-23 CSS267 HKG → HKG May 23, 00:15 UTCMay 23, 00:25 UTC10m
2026-05-22 CSS268 HKG → HKG May 22, 01:55 UTCMay 22, 02:10 UTC15m
2026-05-22 CSS267 HKG → HKG May 22, 00:25 UTCMay 22, 00:50 UTC25m
2026-05-21 CSS268 HKG → HKG May 21, 05:45 UTCMay 21, 06:00 UTC15m
2026-05-21 CSS267 HKG → HKG May 21, 03:35 UTCMay 21, 04:00 UTC25m
2026-05-20 CSS268 HKG → HKG May 20, 02:20 UTCMay 20, 02:40 UTC20m
2026-05-20 CSS267 HKG → HKG May 20, 00:10 UTCMay 20, 01:00 UTC50m
2026-05-19 CSS268 HKG → HKG May 19, 01:50 UTCMay 19, 02:05 UTC15m
2026-05-19 CSS267 HKG → HKG May 19, 00:10 UTCMay 19, 00:25 UTC15m
2026-05-16 CSS268 HKG → HKG May 16, 02:05 UTCMay 16, 02:20 UTC15m
2026-05-16 CSS267 HKG → HKG May 16, 00:20 UTCMay 16, 00:30 UTC10m
2026-05-15 CSS268 HKG → HKG May 15, 03:15 UTCMay 15, 03:30 UTC15m
2026-05-15 CSS267 HKG → HKG May 15, 00:05 UTCMay 15, 00:25 UTC20m
2026-05-14 CSS268 HKG → HKG May 14, 01:55 UTCMay 14, 02:15 UTC20m
2026-05-14 CSS267 HKG → HKG May 14, 00:30 UTCMay 14, 00:50 UTC20m
2026-05-13 CSS268 HKG → HKG May 13, 01:45 UTCMay 13, 02:00 UTC15m
2026-05-13 CSS267 HKG → HKG May 13, 00:10 UTCMay 13, 00:15 UTC5m
2026-05-09 CSS268 HKG → HKG May 9, 01:45 UTCMay 9, 02:45 UTC1h 0m
2026-05-09 CSS267 HKG → HKG May 9, 00:00 UTCMay 9, 00:30 UTC30m
2026-05-08 CSS268 HKG → HKG May 8, 02:09 UTCMay 9, 00:30 UTC22h 20m
2026-05-07 CSS267 HKG → HKG May 7, 23:59 UTCMay 8, 00:29 UTC30m
2026-05-07 CSS268 HKG → HKG May 7, 02:20 UTCMay 7, 02:40 UTC20m
2026-05-07 CSS267 HKG → HKG May 7, 00:20 UTCMay 7, 00:40 UTC20m
2026-05-01 - - May 1, 19:05 UTCMay 1, 19:15 UTC10m
2026-04-19 CSS7240 PEK → HGH Apr 19, 20:45 UTCApr 19, 20:55 UTC10m
2026-04-16 CSS6813 SZX → PEK Apr 16, 18:20 UTCApr 16, 18:35 UTC15m
2026-04-15 CSS6813 SZX → PEK Apr 15, 18:50 UTCApr 15, 19:00 UTC10m

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-2956 page for operator, model, and routing details .

Mode-S 7BB034 frequently asked

What is Mode-S code 7BB034?
7BB034 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2956.
Where is Mode-S 7BB034 registered?
Mode-S code 7BB034 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7BB034 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7BB034, octal 36730064, decimal 8,106,036.
What flights does 7BB034 operate?
Mode-S 7BB034 has broadcast 7 distinct callsigns, including CSS268, CSS267, CSS6813, CSS7240, CSS6836.