Apparatus

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sensors Mode-S transponder

78120B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1303 · BOEING 737-800

Hex
78120B
Octal
36011013
Decimal
7,868,939
Country
CN
Tail
B-1303
Type
B738
No current signal · last broadcast 13h ago
Flights observed
63
Distinct callsigns
20
Country
CN
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 78120B.

Country allocation

The ICAO 24-bit address 78120B 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
CXA8555 - 11 2026-06-20
CXA8867 - 3 2026-07-14
CXA893 Xiamen Airlines 2 2026-06-15
CXA8827 - 2 2026-07-07
CXA8789 - 2 2026-06-22
CXA8781 Xiamen Airlines 2 2026-04-28
CXA8525 - 2 2026-07-06
CXA8366 Xiamen Airlines 2 2026-05-25
CXA8344 - 2 2026-07-07
CXA8343 - 2 2026-06-05
CXA8222 - 2 2026-05-09
CXA8221 - 2 2026-07-01
CXA8088 Xiamen Airlines 2 2026-04-29
CXA8882 Xiamen Airlines 1 2026-06-05
CXA8871 - 1 2026-05-09
CXA8842 Xiamen Airlines 1 2026-05-05
CXA8841 Xiamen Airlines 1 2026-05-05
CXA8828 Xiamen Airlines 1 2026-06-14
CXA8818 - 1 2026-06-17
CXA8790 - 1 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CXA8867 - Jul 14, 00:00 UTCJul 14, 03:35 UTC3h 35m
2026-07-13 CXA8867 - Jul 13, 04:20 UTCJul 14, 00:35 UTC20h 15m
2026-07-10 CXA8867 - Jul 10, 14:30 UTCJul 11, 03:45 UTC13h 15m
2026-07-09 - - Jul 9, 11:35 UTCJul 9, 12:00 UTC25m
2026-07-07 CXA8344 - Jul 7, 14:40 UTCJul 7, 14:50 UTC10m
2026-07-07 CXA8827 - Jul 7, 12:00 UTCJul 7, 12:50 UTC50m
2026-07-06 CXA8525 - Jul 6, 07:30 UTCJul 6, 12:40 UTC5h 10m
2026-07-05 CXA8525 - Jul 5, 11:25 UTCJul 6, 08:00 UTC20h 35m
2026-07-05 CXA8524 - Jul 5, 07:00 UTCJul 5, 12:00 UTC5h 0m
2026-07-01 CXA8221 - Jul 1, 05:35 UTCJul 1, 05:55 UTC20m
2026-06-28 CXA8790 - Jun 28, 02:10 UTCJun 28, 02:39 UTC30m
2026-06-22 CXA8789 - Jun 22, 14:05 UTCJun 22, 14:34 UTC30m
2026-06-20 CXA8555 - Jun 20, 00:39 UTCJun 20, 14:44 UTC14h 5m
2026-06-19 CXA8555 - Jun 19, 09:40 UTCJun 20, 01:24 UTC15h 45m
2026-06-19 CXA8555 - Jun 19, 01:19 UTCJun 20, 00:44 UTC23h 25m
2026-06-19 CXA8555 - Jun 19, 00:29 UTCJun 19, 09:55 UTC9h 25m
2026-06-18 CXA8555 - Jun 18, 09:00 UTCJun 19, 01:19 UTC16h 19m
2026-06-18 CXA8555 - Jun 18, 01:00 UTCJun 19, 00:29 UTC23h 29m
2026-06-18 CXA8555 - Jun 18, 00:30 UTCJun 18, 09:45 UTC9h 15m
2026-06-17 CXA8818 - Jun 17, 09:40 UTCJun 18, 01:00 UTC15h 20m
2026-06-17 CXA8555 PKX → PVG Jun 17, 00:50 UTCJun 18, 00:30 UTC23h 40m
2026-06-16 CXA8555 PKX → PVG Jun 16, 09:45 UTCJun 17, 00:55 UTC15h 11m
2026-06-16 CXA8555 PKX → PVG Jun 16, 00:50 UTCJun 17, 00:45 UTC23h 56m
2026-06-15 CXA8555 PKX → PVG Jun 15, 15:10 UTCJun 16, 09:45 UTC18h 35m
2026-06-15 CXA893 FOC → MFM Jun 15, 02:15 UTCJun 16, 00:45 UTC22h 30m
2026-06-14 CXA8828 ZUH → XMN Jun 14, 15:45 UTCJun 14, 15:55 UTC10m
2026-06-14 CXA8827 XMN → ZUH Jun 14, 14:05 UTCJun 14, 14:30 UTC25m
2026-06-14 CXA860 - Jun 14, 10:10 UTCJun 14, 11:25 UTC1h 15m
2026-06-14 CXA859 - Jun 14, 07:20 UTCJun 14, 08:35 UTC1h 15m
2026-06-12 CXA8789 - Jun 12, 01:55 UTCJun 12, 14:40 UTC12h 45m
2026-06-11 CXA828 MNL → XMN Jun 11, 04:15 UTCJun 12, 01:55 UTC21h 40m
2026-06-11 CXA827 XMN → MNL Jun 11, 01:25 UTCJun 11, 02:45 UTC1h 20m
2026-06-09 CXA8692 - Jun 9, 06:00 UTCJun 9, 06:15 UTC15m
2026-06-09 CXA8691 - Jun 9, 04:00 UTCJun 9, 04:30 UTC30m
2026-06-08 CXA893 FOC → MFM Jun 8, 02:10 UTCJun 8, 02:20 UTC10m
2026-06-05 CXA8882 ZUH → SHA Jun 5, 14:40 UTCJun 5, 15:25 UTC45m
2026-06-05 CXA8343 - Jun 5, 13:05 UTCJun 5, 13:15 UTC10m
2026-05-31 CXA8427 XMN → KWE May 31, 09:35 UTCMay 31, 14:25 UTC4h 50m
2026-05-27 CXA8321 HGH → SYX May 27, 00:34 UTCMay 27, 04:24 UTC3h 50m
2026-05-25 CXA8366 SZX → TSN May 25, 13:40 UTCMay 25, 13:50 UTC10m
2026-05-24 CXA8366 SZX → TSN May 24, 13:55 UTCMay 24, 14:05 UTC10m
2026-05-24 CXA8365 TSN → SZX May 24, 11:50 UTCMay 24, 12:05 UTC15m
2026-05-17 CXA8404 - May 17, 04:35 UTCMay 17, 04:50 UTC15m
2026-05-13 CXA818 - May 13, 10:15 UTCMay 13, 10:50 UTC35m
2026-05-13 CXA817 - May 13, 07:40 UTCMay 13, 08:15 UTC35m
2026-05-09 CXA8346 SZX → HGH May 9, 14:40 UTCMay 9, 14:50 UTC10m
2026-05-09 CXA8871 - May 9, 07:15 UTCMay 9, 07:25 UTC10m
2026-05-09 CXA8222 - May 9, 03:40 UTCMay 9, 03:50 UTC10m
2026-05-08 CXA8221 - May 8, 05:35 UTCMay 8, 05:49 UTC15m
2026-05-05 CXA8842 ZUH → FOC May 5, 09:35 UTCMay 5, 09:50 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-1303 page for operator, model, and routing details .

Mode-S 78120B frequently asked

What is Mode-S code 78120B?
78120B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1303.
Where is Mode-S 78120B registered?
Mode-S code 78120B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78120B broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78120B, octal 36011013, decimal 7,868,939.
What flights does 78120B operate?
Mode-S 78120B has broadcast 20 distinct callsigns, including CXA8555, CXA8867, CXA893, CXA8827, CXA8789.