Apparatus

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sensors Mode-S transponder

7809B7

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5706 · BOEING 737-800

Hex
7809B7
Octal
36004667
Decimal
7,866,807
Country
CN
Tail
B-5706
Type
B738
No current signal · last broadcast 16h ago
Flights observed
115
Distinct callsigns
20
Country
CN
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 7809B7.

Country allocation

The ICAO 24-bit address 7809B7 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
CXA8687 Xiamen Airlines 6 2026-06-04
CXA8688 Xiamen Airlines 4 2026-06-04
CXA8624 - 4 2026-06-07
CXA8871 - 3 2026-06-07
CXA8703 - 3 2026-06-14
CXA8669 - 3 2026-07-01
CXA8345 - 3 2026-07-02
CXA8304 - 3 2026-07-01
CXA816 Xiamen Airlines 3 2026-06-10
CXA8872 - 2 2026-04-25
CXA884 - 2 2026-07-13
CXA883 - 2 2026-07-13
CXA8720 - 2 2026-06-26
CXA8719 - 2 2026-06-26
CXA871 - 2 2026-06-20
CXA8704 - 2 2026-06-15
CXA8701 Xiamen Airlines 2 2026-04-26
CXA8623 - 2 2026-06-07
CXA8390 Xiamen Airlines 2 2026-06-07
CXA8385 - 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CXA8246 - Jul 14, 07:25 UTCJul 14, 07:45 UTC20m
2026-07-13 CXA884 - Jul 13, 12:35 UTCJul 13, 13:05 UTC30m
2026-07-13 CXA883 - Jul 13, 10:40 UTCJul 13, 11:35 UTC55m
2026-07-10 CXA8842 - Jul 10, 03:50 UTCJul 10, 04:30 UTC40m
2026-07-10 CXA8841 - Jul 10, 02:00 UTCJul 10, 02:20 UTC20m
2026-07-08 CXA844 - Jul 8, 20:20 UTCJul 8, 22:40 UTC2h 20m
2026-07-08 CXA834 - Jul 8, 11:35 UTCJul 8, 18:50 UTC7h 15m
2026-07-08 CXA833 - Jul 8, 09:40 UTCJul 8, 10:20 UTC40m
2026-07-08 CXA886 - Jul 8, 01:35 UTCJul 8, 02:00 UTC25m
2026-07-07 CXA885 - Jul 7, 12:50 UTCJul 7, 16:35 UTC3h 45m
2026-07-07 CXA8682 - Jul 7, 10:10 UTCJul 7, 10:20 UTC10m
2026-07-07 CXA8681 - Jul 7, 07:30 UTCJul 7, 08:35 UTC1h 5m
2026-07-07 CXA8526 - Jul 7, 02:05 UTCJul 7, 02:35 UTC30m
2026-07-03 CXA8690 - Jul 3, 04:55 UTCJul 3, 05:25 UTC30m
2026-07-03 CXA8689 - Jul 3, 03:05 UTCJul 3, 03:45 UTC40m
2026-07-02 CXA8384 - Jul 2, 22:55 UTCJul 2, 23:05 UTC10m
2026-07-02 CXA8345 - Jul 2, 14:25 UTCJul 2, 14:50 UTC25m
2026-07-01 CXA8669 - Jul 1, 09:25 UTCJul 1, 14:20 UTC4h 55m
2026-07-01 CXA8304 - Jul 1, 04:25 UTCJul 1, 04:40 UTC15m
2026-06-28 CXA8181 - Jun 28, 08:00 UTCJun 28, 12:35 UTC4h 35m
2026-06-27 CXA8181 - Jun 27, 12:29 UTCJun 28, 08:14 UTC19h 45m
2026-06-26 CXA8720 - Jun 26, 10:50 UTCJun 27, 08:10 UTC21h 20m
2026-06-26 CXA8719 - Jun 26, 09:05 UTCJun 26, 09:14 UTC10m
2026-06-21 CXA8022 - Jun 21, 23:55 UTCJun 22, 10:44 UTC10h 50m
2026-06-20 CXA872 - Jun 20, 05:04 UTCJun 20, 05:44 UTC40m
2026-06-20 CXA871 - Jun 20, 02:29 UTCJun 20, 03:14 UTC45m
2026-06-20 CXA871 - Jun 20, 00:54 UTCJun 20, 01:05 UTC10m
2026-06-15 CXA8704 - Jun 15, 07:35 UTCJun 15, 11:34 UTC4h 0m
2026-06-14 CXA8703 - Jun 14, 10:55 UTCJun 15, 05:15 UTC18h 19m
2026-06-14 CXA8703 - Jun 14, 07:50 UTCJun 15, 05:15 UTC21h 25m
2026-06-14 CXA8704 - Jun 14, 07:35 UTCJun 15, 05:15 UTC21h 39m
2026-06-14 CXA8703 - Jun 14, 02:00 UTCJun 14, 05:00 UTC3h 0m
2026-06-12 CXA8070 - Jun 12, 11:25 UTCJun 12, 12:10 UTC45m
2026-06-11 CXA8070 CGQ → HGH Jun 11, 13:00 UTCJun 12, 11:40 UTC22h 41m
2026-06-10 CXA816 NRT → XMN Jun 10, 10:30 UTCJun 10, 11:10 UTC40m
2026-06-10 CXA816 NRT → XMN Jun 10, 07:25 UTCJun 10, 09:00 UTC1h 35m
2026-06-10 CXA815 XMN → NRT Jun 10, 04:35 UTCJun 10, 06:00 UTC1h 25m
2026-06-08 CXA8676 - Jun 8, 19:35 UTCJun 8, 23:10 UTC3h 35m
2026-06-08 CXA8675 - Jun 8, 17:35 UTCJun 8, 18:00 UTC25m
2026-06-08 CXA8304 SZX → CKG Jun 8, 04:20 UTCJun 8, 04:30 UTC10m
2026-06-07 CXA8390 SZX → CKG Jun 7, 15:50 UTCJun 7, 16:00 UTC10m
2026-06-07 CXA8871 - Jun 7, 08:55 UTCJun 7, 09:05 UTC10m
2026-06-07 CXA8624 - Jun 7, 05:20 UTCJun 7, 05:35 UTC15m
2026-06-07 CXA8623 - Jun 7, 01:20 UTCJun 7, 01:30 UTC10m
2026-06-06 CXA8331 SHA → SZX Jun 6, 17:29 UTCJun 6, 17:54 UTC25m
2026-06-06 CXA8372 SZX → SHA Jun 6, 06:05 UTCJun 6, 06:15 UTC10m
2026-06-06 CXA8371 SHA → SZX Jun 6, 03:05 UTCJun 6, 03:20 UTC15m
2026-06-05 CXA8318 SZX → SHA Jun 5, 12:20 UTCJun 5, 12:30 UTC10m
2026-06-05 - - Jun 5, 10:45 UTCJun 5, 10:55 UTC10m
2026-06-05 CXA8305 - Jun 5, 00:10 UTCJun 5, 00:40 UTC30m

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-5706 page for operator, model, and routing details .

Mode-S 7809B7 frequently asked

What is Mode-S code 7809B7?
7809B7 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5706.
Where is Mode-S 7809B7 registered?
Mode-S code 7809B7 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7809B7 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7809B7, octal 36004667, decimal 7,866,807.
What flights does 7809B7 operate?
Mode-S 7809B7 has broadcast 20 distinct callsigns, including CXA8687, CXA8688, CXA8624, CXA8871, CXA8703.