Apparatus

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sensors Mode-S transponder

7804F1

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1969 · BOEING 737-800

Hex
7804F1
Octal
36002361
Decimal
7,865,585
Country
CN
Tail
B-1969
Type
B738
No current signal · last broadcast Jul 26, 12:25 UTC
Flights observed
103
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 12:25 UTC

Last known position

Most recent position reported by Mode-S 7804F1.

Country allocation

The ICAO 24-bit address 7804F1 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
CXA8722 - 11 2026-07-09
CXA866 - 7 2026-07-08
CXA865 - 6 2026-07-08
CXA818 - 6 2026-07-19
CXA817 - 5 2026-07-19
CXA897 - 3 2026-07-10
CXA886 Xiamen Airlines 3 2026-05-26
CXA885 Xiamen Airlines 3 2026-05-25
CXA898 - 2 2026-07-10
CXA880 - 2 2026-07-12
CXA879 - 2 2026-07-12
CXA878 Xiamen Airlines 2 2026-05-16
CXA877 Xiamen Airlines 2 2026-05-16
CXA8721 - 2 2026-07-01
CXA8660 - 2 2026-05-28
CXA8659 - 2 2026-05-28
CXA8616 - 2 2026-05-13
CXA8020 - 2 2026-04-17
CXA8862 - 1 2026-04-16
CXA8845 Xiamen Airlines 1 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CXA8515 - Jul 26, 12:10 UTCJul 26, 12:25 UTC15m
2026-07-24 CXA8060 SHE → HGH Jul 24, 12:25 UTCJul 24, 13:00 UTC35m
2026-07-22 CXA8726 - Jul 22, 04:40 UTCJul 22, 05:10 UTC30m
2026-07-22 CXA8725 - Jul 22, 01:20 UTCJul 22, 03:00 UTC1h 40m
2026-07-19 CXA8845 HGH → CGQ Jul 19, 15:00 UTCJul 19, 15:10 UTC10m
2026-07-19 CXA818 - Jul 19, 11:05 UTCJul 19, 11:35 UTC30m
2026-07-19 CXA817 - Jul 19, 05:00 UTCJul 19, 09:20 UTC4h 20m
2026-07-18 CXA817 - Jul 18, 12:35 UTCJul 19, 09:20 UTC20h 45m
2026-07-18 CXA8696 - Jul 18, 08:25 UTCJul 19, 07:55 UTC23h 30m
2026-07-18 CXA8695 - Jul 18, 07:45 UTCJul 19, 05:15 UTC21h 30m
2026-07-13 CXA8842 - Jul 13, 09:35 UTCJul 13, 09:45 UTC10m
2026-07-13 CXA8841 - Jul 13, 07:15 UTCJul 13, 07:55 UTC40m
2026-07-12 CXA880 - Jul 12, 03:40 UTCJul 12, 04:05 UTC25m
2026-07-12 CXA879 - Jul 12, 01:35 UTCJul 12, 02:01 UTC25m
2026-07-10 CXA898 - Jul 10, 09:55 UTCJul 10, 10:25 UTC30m
2026-07-10 CXA897 - Jul 10, 05:00 UTCJul 10, 08:50 UTC3h 50m
2026-07-09 CXA8722 - Jul 9, 12:25 UTCJul 9, 12:35 UTC10m
2026-07-09 CXA8722 - Jul 9, 02:15 UTCJul 9, 11:20 UTC9h 5m
2026-07-08 CXA866 - Jul 8, 07:35 UTCJul 8, 08:10 UTC35m
2026-07-08 CXA865 - Jul 8, 05:45 UTCJul 8, 06:15 UTC30m
2026-07-08 CXA865 - Jul 8, 02:20 UTCJul 8, 02:35 UTC15m
2026-07-07 CXA866 - Jul 7, 11:05 UTCJul 7, 11:30 UTC25m
2026-07-07 CXA866 - Jul 7, 07:30 UTCJul 7, 08:00 UTC30m
2026-07-07 CXA865 - Jul 7, 02:15 UTCJul 7, 05:55 UTC3h 40m
2026-07-06 CXA866 - Jul 6, 11:05 UTCJul 6, 11:15 UTC10m
2026-07-06 CXA866 - Jul 6, 07:35 UTCJul 6, 08:00 UTC25m
2026-07-06 CXA865 - Jul 6, 05:15 UTCJul 6, 05:45 UTC30m
2026-07-05 CXA866 - Jul 5, 07:35 UTCJul 6, 05:45 UTC22h 10m
2026-07-05 CXA865 - Jul 5, 05:50 UTCJul 5, 06:20 UTC30m
2026-07-04 CXA8722 - Jul 4, 01:45 UTCJul 4, 11:55 UTC10h 10m
2026-07-03 CXA8722 - Jul 3, 14:15 UTCJul 4, 11:55 UTC21h 40m
2026-07-03 CXA8722 - Jul 3, 11:00 UTCJul 4, 10:05 UTC23h 5m
2026-07-03 CXA897 - Jul 3, 08:45 UTCJul 3, 09:30 UTC45m
2026-07-02 CXA8722 - Jul 2, 02:40 UTCJul 2, 12:20 UTC9h 40m
2026-07-01 CXA8721 - Jul 1, 08:20 UTCJul 2, 05:05 UTC20h 45m
2026-07-01 CXA8721 - Jul 1, 08:00 UTCJul 2, 05:05 UTC21h 5m
2026-06-30 CXA8722 - Jun 30, 10:45 UTCJul 1, 06:00 UTC19h 15m
2026-06-30 CXA8722 - Jun 30, 09:30 UTCJul 1, 06:00 UTC20h 30m
2026-06-30 CXA8722 - Jun 30, 04:20 UTCJul 1, 02:45 UTC22h 25m
2026-06-25 CXA8722 - Jun 25, 04:25 UTCJun 25, 12:25 UTC8h 0m
2026-06-25 - - Jun 25, 01:40 UTCJun 25, 02:10 UTC30m
2026-06-18 CXA898 - Jun 18, 10:25 UTCJun 18, 10:50 UTC25m
2026-06-18 CXA897 - Jun 18, 05:35 UTCJun 18, 09:00 UTC3h 25m
2026-06-16 CXA8722 SUB → FOC Jun 16, 02:20 UTCJun 16, 11:45 UTC9h 25m
2026-06-06 CXA8435 FOC → TFU Jun 6, 23:50 UTCJun 7, 00:00 UTC10m
2026-05-29 CXA8362 HAK → XMN May 29, 13:55 UTCMay 29, 14:25 UTC30m
2026-05-29 CXA8361 XMN → HAK May 29, 10:25 UTCMay 29, 10:45 UTC20m
2026-05-29 CXA872 ICN → XMN May 29, 04:55 UTCMay 29, 05:25 UTC30m
2026-05-28 CXA844 - May 28, 19:10 UTCMay 29, 03:10 UTC8h 0m
2026-05-28 CXA843 - May 28, 15:15 UTCMay 28, 17:35 UTC2h 20m

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-1969 page for operator, model, and routing details .

Mode-S 7804F1 frequently asked

What is Mode-S code 7804F1?
7804F1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1969.
Where is Mode-S 7804F1 registered?
Mode-S code 7804F1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7804F1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7804F1, octal 36002361, decimal 7,865,585.
What flights does 7804F1 operate?
Mode-S 7804F1 has broadcast 20 distinct callsigns, including CXA8722, CXA866, CXA865, CXA818, CXA817.