Apparatus

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sensors Mode-S transponder

7BB054

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2985 · BOEING 737-300

Hex
7BB054
Octal
36730124
Decimal
8,106,068
Country
CN
Tail
B-2985
Type
B733
No current signal · last broadcast 1d ago
Flights observed
64
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7BB054.

Country allocation

The ICAO 24-bit address 7BB054 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
CSS268 SF Airlines 14 2026-07-22
CSS267 - 14 2026-07-21
CSS6814 SF Airlines 5 2026-06-04
CSS6813 - 5 2026-07-12
CSS7344 SF Airlines 3 2026-06-08
CSS266 SF Airlines 3 2026-06-10
CSS265 SF Airlines 3 2026-06-09
CSS7242 - 2 2026-06-26
CSS6848 - 2 2026-06-03
CSS6812 SF Airlines 2 2026-04-22
CSS7262 - 1 2026-06-12
CSS7244 - 1 2026-06-22
CSS7101 SF Airlines 1 2026-04-29
CSS7088 - 1 2026-06-22
CSS6990 - 1 2026-06-18
CSS6936 - 1 2026-06-18
CSS6847 - 1 2026-06-03
CSS6832 - 1 2026-07-10
CSS6810 - 1 2026-06-02
CSS6808 - 1 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 CSS268 HKG → HKG Jul 22, 01:55 UTCJul 22, 02:45 UTC50m
2026-07-21 CSS267 - Jul 21, 23:45 UTCJul 22, 00:30 UTC45m
2026-07-21 CSS268 - Jul 21, 01:55 UTCJul 21, 02:45 UTC50m
2026-07-20 CSS267 - Jul 20, 23:55 UTCJul 21, 00:40 UTC45m
2026-07-18 CSS268 - Jul 18, 02:09 UTCJul 18, 03:15 UTC1h 6m
2026-07-17 CSS267 - Jul 17, 23:55 UTCJul 18, 00:35 UTC40m
2026-07-17 CSS268 - Jul 17, 01:49 UTCJul 17, 03:05 UTC1h 15m
2026-07-16 CSS267 - Jul 16, 23:44 UTCJul 17, 00:30 UTC45m
2026-07-16 CSS268 HKG → XMN Jul 16, 04:00 UTCJul 16, 04:50 UTC50m
2026-07-16 CSS267 - Jul 16, 02:10 UTCJul 16, 02:25 UTC15m
2026-07-15 CSS268 - Jul 15, 02:20 UTCJul 15, 03:30 UTC1h 10m
2026-07-15 CSS267 - Jul 15, 00:35 UTCJul 15, 00:45 UTC10m
2026-07-14 CSS268 - Jul 14, 02:20 UTCJul 14, 03:05 UTC45m
2026-07-13 CSS267 - Jul 13, 23:25 UTCJul 14, 00:25 UTC1h 0m
2026-07-12 CSS6813 - Jul 12, 18:10 UTCJul 12, 18:20 UTC10m
2026-07-12 CSS6808 - Jul 12, 00:30 UTCJul 12, 00:40 UTC10m
2026-07-10 CSS6832 - Jul 10, 23:45 UTCJul 10, 23:55 UTC10m
2026-07-07 CSS268 - Jul 7, 04:15 UTCJul 7, 05:30 UTC1h 15m
2026-07-07 CSS267 - Jul 7, 00:55 UTCJul 7, 01:45 UTC50m
2026-07-04 CSS268 - Jul 4, 01:30 UTCJul 4, 02:40 UTC1h 10m
2026-07-04 CSS267 - Jul 4, 00:00 UTCJul 4, 00:15 UTC15m
2026-07-03 CSS268 - Jul 3, 03:20 UTCJul 3, 03:35 UTC15m
2026-07-03 CSS267 - Jul 3, 00:15 UTCJul 3, 00:40 UTC25m
2026-07-01 CSS268 - Jul 1, 01:45 UTCJul 1, 02:00 UTC15m
2026-07-01 CSS267 - Jul 1, 00:00 UTCJul 1, 00:20 UTC20m
2026-06-30 CSS268 - Jun 30, 01:50 UTCJun 30, 02:55 UTC1h 5m
2026-06-30 CSS267 - Jun 30, 00:20 UTCJun 30, 00:35 UTC15m
2026-06-26 CSS7242 - Jun 26, 01:10 UTCJun 26, 01:20 UTC10m
2026-06-22 CSS7244 - Jun 22, 21:40 UTCJun 22, 21:54 UTC15m
2026-06-22 CSS7088 - Jun 22, 00:55 UTCJun 22, 01:05 UTC10m
2026-06-18 CSS6936 - Jun 18, 19:35 UTCJun 18, 19:45 UTC10m
2026-06-18 CSS6990 - Jun 18, 12:50 UTCJun 18, 13:05 UTC15m
2026-06-17 CSS6807 - Jun 17, 22:35 UTCJun 17, 22:50 UTC15m
2026-06-13 CSS268 HKG → HKG Jun 13, 03:30 UTCJun 13, 03:50 UTC20m
2026-06-13 CSS267 HKG → HKG Jun 13, 01:20 UTCJun 13, 01:40 UTC20m
2026-06-12 CSS7262 - Jun 12, 20:45 UTCJun 12, 21:00 UTC15m
2026-06-10 CSS266 TPE → NGB Jun 10, 07:45 UTCJun 10, 08:25 UTC40m
2026-06-09 CSS265 NGB → TPE Jun 9, 20:40 UTCJun 10, 05:55 UTC9h 15m
2026-06-08 CSS7344 PEK → WUX Jun 8, 21:45 UTCJun 8, 22:00 UTC15m
2026-06-05 CSS7344 PEK → WUX Jun 5, 22:55 UTCJun 5, 23:05 UTC10m
2026-06-05 CSS6813 SZX → PEK Jun 5, 18:40 UTCJun 5, 18:50 UTC10m
2026-06-04 CSS6814 PEK → SZX Jun 4, 22:15 UTCJun 4, 22:35 UTC20m
2026-06-04 CSS6813 SZX → PEK Jun 4, 18:30 UTCJun 4, 18:40 UTC10m
2026-06-03 CSS6848 - Jun 3, 20:45 UTCJun 3, 21:05 UTC20m
2026-06-03 CSS6847 - Jun 3, 18:10 UTCJun 3, 18:20 UTC10m
2026-06-02 CSS6810 - Jun 2, 21:10 UTCJun 2, 21:25 UTC15m
2026-05-28 CSS7242 - May 28, 00:20 UTCMay 28, 00:30 UTC10m
2026-05-26 CSS266 TPE → NGB May 26, 02:29 UTCMay 26, 02:44 UTC15m
2026-05-26 CSS265 NGB → TPE May 26, 00:19 UTCMay 26, 00:49 UTC30m
2026-05-09 CSS7344 PEK → WUX May 9, 21:45 UTCMay 9, 21:55 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-2985 page for operator, model, and routing details .

Mode-S 7BB054 frequently asked

What is Mode-S code 7BB054?
7BB054 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2985.
Where is Mode-S 7BB054 registered?
Mode-S code 7BB054 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7BB054 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 7BB054, octal 36730124, decimal 8,106,068.
What flights does 7BB054 operate?
Mode-S 7BB054 has broadcast 20 distinct callsigns, including CSS268, CSS267, CSS6814, CSS6813, CSS7344.