Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7804BF

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5397 · BOEING 737-800

Hex
7804BF
Octal
36002277
Decimal
7,865,535
Country
CN
Tail
B-5397
Type
B738
No current signal · last broadcast 6h ago
Flights observed
66
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7804BF.

Country allocation

The ICAO 24-bit address 7804BF 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
CCA8621 - 6 2026-07-12
CCA763 - 6 2026-07-14
CCA764 - 5 2026-07-14
CCA8689 - 4 2026-07-06
CCA8681 - 4 2026-07-08
CCA8659 Air China 4 2026-06-06
CCA8608 - 4 2026-07-07
CCA132 - 4 2026-06-30
CCA131 - 4 2026-06-30
CCA8630 - 3 2026-06-30
CCA1278 Air China 3 2026-05-19
CCA8615 - 2 2026-07-07
CCA8376 - 2 2026-07-14
CCA4132 Air China 2 2026-05-20
CCA1438 Air China 2 2026-05-20
CCA1277 Air China 2 2026-05-08
CCA870 Air China 1 2026-05-10
CCA869 Air China 1 2026-05-10
CCA8629 - 1 2026-06-30
CCA8363 Air China 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CCA764 - Jul 14, 10:50 UTCJul 14, 11:05 UTC15m
2026-07-14 CCA763 - Jul 14, 08:30 UTCJul 14, 09:15 UTC45m
2026-07-14 CCA8376 - Jul 14, 02:15 UTCJul 14, 02:30 UTC15m
2026-07-12 CCA8621 - Jul 12, 22:50 UTCJul 12, 23:05 UTC15m
2026-07-12 CCA764 - Jul 12, 10:40 UTCJul 12, 10:55 UTC15m
2026-07-12 CCA763 - Jul 12, 08:15 UTCJul 12, 08:50 UTC35m
2026-07-12 CCA8376 - Jul 12, 02:20 UTCJul 12, 02:35 UTC15m
2026-07-08 CCA8681 - Jul 8, 09:55 UTCJul 8, 10:05 UTC10m
2026-07-07 CCA8615 - Jul 7, 13:20 UTCJul 7, 13:30 UTC10m
2026-07-07 CCA8608 - Jul 7, 08:50 UTCJul 7, 09:05 UTC15m
2026-07-06 CCA8689 - Jul 6, 03:05 UTCJul 6, 03:15 UTC10m
2026-07-05 CCA8689 - Jul 5, 03:25 UTCJul 5, 03:35 UTC10m
2026-07-04 CCA8621 - Jul 4, 22:50 UTCJul 4, 23:00 UTC10m
2026-07-04 CCA8681 - Jul 4, 09:30 UTCJul 4, 09:45 UTC15m
2026-07-02 CCA8681 - Jul 2, 09:40 UTCJul 2, 10:00 UTC20m
2026-06-30 CCA8630 - Jun 30, 16:00 UTCJun 30, 16:15 UTC15m
2026-06-30 CCA8629 - Jun 30, 11:50 UTCJun 30, 12:00 UTC10m
2026-06-30 CCA132 - Jun 30, 06:40 UTCJun 30, 06:55 UTC15m
2026-06-30 CCA131 - Jun 30, 04:40 UTCJun 30, 05:00 UTC20m
2026-06-29 CCA8621 - Jun 29, 23:09 UTCJun 29, 23:25 UTC15m
2026-06-28 CCA8621 - Jun 28, 22:55 UTCJun 28, 23:04 UTC10m
2026-06-22 CCA132 - Jun 22, 06:45 UTCJun 22, 07:04 UTC20m
2026-06-22 CCA131 - Jun 22, 04:30 UTCJun 22, 04:54 UTC25m
2026-06-21 CCA8615 - Jun 21, 12:04 UTCJun 21, 12:14 UTC10m
2026-06-20 CCA8608 WUA → PKX Jun 20, 07:39 UTCJun 20, 07:49 UTC10m
2026-06-10 CCA8681 PKX → JMU Jun 10, 10:45 UTCJun 10, 10:55 UTC10m
2026-06-06 CCA8659 PKX → NDG Jun 6, 07:15 UTCJun 6, 07:25 UTC10m
2026-06-03 CCA8659 PKX → NDG Jun 3, 07:30 UTCJun 3, 07:40 UTC10m
2026-05-30 CCA764 HKG → PKX May 30, 10:05 UTCMay 30, 10:20 UTC15m
2026-05-30 CCA763 PKX → HKG May 30, 07:15 UTCMay 30, 07:50 UTC35m
2026-05-29 CCA8689 PKX → TGO May 29, 04:00 UTCMay 29, 04:10 UTC10m
2026-05-28 CCA8621 PKX → KWL May 28, 23:00 UTCMay 28, 23:15 UTC15m
2026-05-22 CCA1935 PEK → NNG May 22, 03:30 UTCMay 22, 04:00 UTC30m
2026-05-21 CCA4173 KMG → PEK May 21, 11:35 UTCMay 21, 12:00 UTC25m
2026-05-21 CCA4172 PEK → KMG May 21, 03:55 UTCMay 21, 04:20 UTC25m
2026-05-20 CCA1438 CKG → PEK May 20, 10:00 UTCMay 20, 10:10 UTC10m
2026-05-20 CCA4132 PEK → CKG May 20, 04:10 UTCMay 20, 04:30 UTC20m
2026-05-19 CCA1278 LHW → PEK May 19, 01:45 UTCMay 19, 02:05 UTC20m
2026-05-15 CCA132 ICN → PEK May 15, 06:50 UTCMay 15, 07:00 UTC10m
2026-05-15 CCA131 PEK → ICN May 15, 04:40 UTCMay 15, 04:50 UTC10m
2026-05-14 CCA764 HKG → PKX May 14, 10:40 UTCMay 14, 11:01 UTC20m
2026-05-14 CCA763 PKX → HKG May 14, 08:45 UTCMay 14, 09:10 UTC25m
2026-05-13 CCA8630 ZUH → PKX May 13, 14:30 UTCMay 13, 14:45 UTC15m
2026-05-10 CCA870 IKT → PEK May 10, 10:05 UTCMay 10, 10:24 UTC20m
2026-05-10 CCA869 PEK → IKT May 10, 07:15 UTCMay 10, 07:45 UTC30m
2026-05-09 CCA1373 PEK → CSX May 9, 05:25 UTCMay 9, 05:40 UTC15m
2026-05-09 CCA1278 LHW → PEK May 9, 01:45 UTCMay 9, 02:05 UTC20m
2026-05-08 CCA1277 PEK → LHW May 8, 12:10 UTCMay 8, 12:39 UTC30m
2026-05-08 CCA1438 CKG → PEK May 8, 09:59 UTCMay 8, 10:09 UTC10m
2026-05-08 CCA4132 PEK → CKG May 8, 04:00 UTCMay 8, 04:25 UTC25m

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-5397 page for operator, model, and routing details .

Mode-S 7804BF frequently asked

What is Mode-S code 7804BF?
7804BF is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5397.
Where is Mode-S 7804BF registered?
Mode-S code 7804BF is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7804BF broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7804BF, octal 36002277, decimal 7,865,535.
What flights does 7804BF operate?
Mode-S 7804BF has broadcast 20 distinct callsigns, including CCA8621, CCA763, CCA764, CCA8689, CCA8681.