Apparatus

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sensors Mode-S transponder

7807A4

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5280 · BOEING 737-700

Hex
7807A4
Octal
36003644
Decimal
7,866,276
Country
CN
Tail
B-5280
Type
B737
No current signal · last broadcast 3d ago
Flights observed
48
Distinct callsigns
20
Country
CN
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 7807A4.

Country allocation

The ICAO 24-bit address 7807A4 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
CXA8842 - 6 2026-07-16
CXA8672 Xiamen Airlines 5 2026-07-26
CXA8671 Xiamen Airlines 5 2026-07-26
CXA8841 - 4 2026-07-16
CXA8770 Xiamen Airlines 3 2026-07-20
CXA8664 Xiamen Airlines 3 2026-07-26
CXA8663 Xiamen Airlines 3 2026-07-26
CXA8760 Xiamen Airlines 2 2026-07-25
CXA8429 Xiamen Airlines 2 2026-06-16
CXA8361 - 2 2026-07-18
CXA8074 - 2 2026-07-01
CXA8847 - 1 2026-06-05
CXA8784 Xiamen Airlines 1 2026-05-31
CXA8783 - 1 2026-07-13
CXA8757 - 1 2026-07-07
CXA8682 - 1 2026-06-29
CXA8681 - 1 2026-06-29
CXA8545 - 1 2026-05-17
CXA8392 - 1 2026-07-23
CXA8326 Xiamen Airlines 1 2026-06-13

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-07-26 CXA8672 MFM → FOC Jul 26, 12:35 UTCJul 26, 13:25 UTC50m
2026-07-26 CXA8671 FOC → MFM Jul 26, 10:05 UTCJul 26, 10:40 UTC35m
2026-07-26 CXA8664 HKG → FOC Jul 26, 07:15 UTCJul 26, 07:25 UTC10m
2026-07-26 CXA8663 FOC → HKG Jul 26, 05:25 UTCJul 26, 05:55 UTC30m
2026-07-25 CXA8760 JHG → FOC Jul 25, 04:50 UTCJul 25, 06:35 UTC1h 45m
2026-07-23 CXA8392 - Jul 23, 05:05 UTCJul 23, 05:15 UTC10m
2026-07-20 CXA8770 JHG → XMN Jul 20, 07:10 UTCJul 20, 07:25 UTC15m
2026-07-20 CXA8770 JHG → XMN Jul 20, 05:35 UTCJul 20, 05:45 UTC10m
2026-07-18 CXA8361 - Jul 18, 05:15 UTCJul 18, 14:10 UTC8h 55m
2026-07-16 CXA8842 - Jul 16, 09:30 UTCJul 16, 09:40 UTC10m
2026-07-16 CXA8841 - Jul 16, 07:50 UTCJul 16, 08:05 UTC15m
2026-07-15 CXA8842 - Jul 15, 03:15 UTCJul 15, 03:25 UTC10m
2026-07-15 CXA8841 - Jul 15, 01:30 UTCJul 15, 01:45 UTC15m
2026-07-14 CXA8760 - Jul 14, 06:40 UTCJul 14, 08:30 UTC1h 50m
2026-07-13 CXA8783 - Jul 13, 05:25 UTCJul 13, 15:10 UTC9h 45m
2026-07-09 CXA8842 - Jul 9, 13:00 UTCJul 9, 13:35 UTC35m
2026-07-09 CXA8841 - Jul 9, 11:15 UTCJul 9, 12:00 UTC45m
2026-07-07 CXA8757 - Jul 7, 00:45 UTCJul 7, 01:20 UTC35m
2026-07-05 CXA8672 - Jul 5, 11:45 UTCJul 5, 12:00 UTC15m
2026-07-05 CXA8671 - Jul 5, 10:05 UTCJul 5, 10:30 UTC25m
2026-07-05 CXA8664 - Jul 5, 05:30 UTCJul 5, 05:45 UTC15m
2026-07-05 CXA8663 - Jul 5, 03:40 UTCJul 5, 03:50 UTC10m
2026-07-03 CXA8672 - Jul 3, 11:00 UTCJul 3, 11:20 UTC20m
2026-07-03 CXA8671 - Jul 3, 09:00 UTCJul 3, 09:25 UTC25m
2026-07-02 CXA8842 - Jul 2, 11:10 UTCJul 2, 11:25 UTC15m
2026-07-02 CXA8841 - Jul 2, 09:50 UTCJul 2, 10:00 UTC10m
2026-07-01 CXA8074 - Jul 1, 02:50 UTCJul 1, 05:00 UTC2h 10m
2026-06-29 CXA8682 - Jun 29, 07:09 UTCJun 29, 07:25 UTC15m
2026-06-29 CXA8681 - Jun 29, 05:09 UTCJun 29, 05:24 UTC15m
2026-06-29 CXA8305 - Jun 29, 00:20 UTCJun 29, 00:29 UTC10m
2026-06-21 CXA8672 - Jun 21, 10:54 UTCJun 21, 11:10 UTC15m
2026-06-21 CXA8671 - Jun 21, 09:00 UTCJun 21, 09:24 UTC25m
2026-06-21 CXA8664 - Jun 21, 05:30 UTCJun 21, 05:44 UTC15m
2026-06-21 CXA8663 - Jun 21, 03:40 UTCJun 21, 03:59 UTC20m
2026-06-16 CXA8429 FOC → KMG Jun 16, 00:45 UTCJun 16, 01:55 UTC1h 10m
2026-06-14 CXA8842 ZUH → FOC Jun 14, 10:55 UTCJun 14, 11:10 UTC15m
2026-06-14 CXA8842 ZUH → FOC Jun 14, 10:05 UTCJun 14, 10:20 UTC15m
2026-06-13 CXA8326 CAN → FOC Jun 13, 13:00 UTCJun 13, 13:10 UTC10m
2026-06-11 CXA8361 XMN → HAK Jun 11, 11:30 UTCJun 12, 06:30 UTC19h 0m
2026-06-05 CXA8847 - Jun 5, 00:25 UTCJun 5, 00:35 UTC10m
2026-06-03 - - Jun 3, 11:35 UTCJun 3, 11:45 UTC10m
2026-05-31 CXA8784 HAK → FOC May 31, 11:00 UTCMay 31, 14:35 UTC3h 35m
2026-05-20 CXA8672 MFM → FOC May 20, 10:30 UTCMay 20, 11:10 UTC40m
2026-05-20 CXA8671 FOC → MFM May 20, 08:45 UTCMay 20, 09:10 UTC25m
2026-05-19 CXA8429 FOC → KMG May 19, 00:45 UTCMay 19, 01:15 UTC30m
2026-05-17 CXA8545 - May 17, 11:40 UTCMay 17, 11:50 UTC10m
2026-05-10 CXA8770 JHG → XMN May 10, 06:30 UTCMay 10, 06:40 UTC10m
2026-04-27 CXA8074 HRB → HGH Apr 27, 06:55 UTCApr 27, 07:05 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-5280 page for operator, model, and routing details .

Mode-S 7807A4 frequently asked

What is Mode-S code 7807A4?
7807A4 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5280.
Where is Mode-S 7807A4 registered?
Mode-S code 7807A4 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7807A4 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7807A4, octal 36003644, decimal 7,866,276.
What flights does 7807A4 operate?
Mode-S 7807A4 has broadcast 20 distinct callsigns, including CXA8842, CXA8672, CXA8671, CXA8841, CXA8770.