Apparatus

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sensors Mode-S transponder

7804B1

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6506 · AIRBUS A-330-300

Hex
7804B1
Octal
36002261
Decimal
7,865,521
Country
CN
Tail
B-6506
Type
A333
No current signal · last broadcast 20h ago
Flights observed
125
Distinct callsigns
20
Country
CN
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 7804B1.

Country allocation

The ICAO 24-bit address 7804B1 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
CES2075 - 13 2026-06-30
CES5018 - 10 2026-06-24
CES5017 - 10 2026-06-23
CSH9331 Shanghai Airlines 5 2026-06-01
CES5348 China Eastern Airlines 5 2026-05-23
CES5339 China Eastern Airlines 5 2026-05-23
CES511 - 5 2026-07-05
CES2076 - 5 2026-06-30
CSH9332 Shanghai Airlines 4 2026-06-01
CES729 - 3 2026-07-11
CES5355 China Eastern Airlines 3 2026-05-13
CES5334 - 3 2026-06-23
CES5116 China Eastern Airlines 3 2026-06-07
CES5098 - 3 2026-07-05
CES730 - 2 2026-07-08
CES538 China Eastern Airlines 2 2026-04-15
CES5353 - 2 2026-07-03
CES5349 - 2 2026-06-22
CES5340 - 2 2026-07-02
CES5331 - 2 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CES540 - Jul 13, 13:25 UTCJul 13, 15:00 UTC1h 35m
2026-07-13 CES539 - Jul 13, 09:50 UTCJul 13, 11:30 UTC1h 40m
2026-07-13 CES5342 - Jul 13, 05:15 UTCJul 13, 05:25 UTC10m
2026-07-13 CES5331 - Jul 13, 03:25 UTCJul 13, 03:40 UTC15m
2026-07-12 CES508 - Jul 12, 14:30 UTCJul 12, 15:50 UTC1h 20m
2026-07-12 CES507 - Jul 12, 05:01 UTCJul 12, 12:35 UTC7h 35m
2026-07-11 CES729 KIX → KIX Jul 11, 04:30 UTCJul 11, 11:35 UTC7h 5m
2026-07-11 CES225 - Jul 11, 02:00 UTCJul 11, 03:10 UTC1h 10m
2026-07-09 - - Jul 9, 09:45 UTCJul 9, 10:00 UTC15m
2026-07-08 CES5008 - Jul 8, 07:50 UTCJul 8, 08:40 UTC50m
2026-07-08 CES730 - Jul 8, 00:40 UTCJul 8, 06:10 UTC5h 30m
2026-07-07 CES729 - Jul 7, 07:55 UTCJul 7, 13:10 UTC5h 15m
2026-07-07 CES730 - Jul 7, 00:45 UTCJul 7, 06:25 UTC5h 40m
2026-07-06 CES729 TPE → KIX Jul 6, 08:00 UTCJul 6, 13:30 UTC5h 30m
2026-07-06 CES5007 - Jul 6, 05:50 UTCJul 6, 06:30 UTC40m
2026-07-05 CES5098 - Jul 5, 09:25 UTCJul 5, 10:05 UTC40m
2026-07-05 CES512 GMP → TSA Jul 5, 03:20 UTCJul 5, 08:05 UTC4h 45m
2026-07-05 CES511 - Jul 5, 01:15 UTCJul 5, 02:00 UTC45m
2026-07-04 CES511 - Jul 4, 04:20 UTCJul 5, 02:00 UTC21h 40m
2026-07-04 CES511 - Jul 4, 04:00 UTCJul 5, 02:00 UTC22h 0m
2026-07-03 CES5353 - Jul 3, 05:25 UTCJul 3, 14:25 UTC9h 0m
2026-07-02 CES5128 - Jul 2, 13:25 UTCJul 2, 13:40 UTC15m
2026-07-02 CES5119 - Jul 2, 10:45 UTCJul 2, 10:55 UTC10m
2026-07-02 CES5340 - Jul 2, 05:40 UTCJul 2, 05:50 UTC10m
2026-07-02 CES5331 - Jul 2, 03:20 UTCJul 2, 03:40 UTC20m
2026-06-30 CES2076 - Jun 30, 21:40 UTCJun 30, 21:50 UTC10m
2026-06-30 CES2075 - Jun 30, 04:20 UTCJun 30, 19:05 UTC14h 45m
2026-06-29 CES2076 - Jun 29, 21:24 UTCJun 29, 21:39 UTC15m
2026-06-29 CES2076 - Jun 29, 18:05 UTCJun 29, 18:55 UTC50m
2026-06-29 CES2075 - Jun 29, 11:39 UTCJun 29, 11:50 UTC10m
2026-06-29 CES2075 - Jun 29, 04:30 UTCJun 29, 10:00 UTC5h 30m
2026-06-28 CES2076 - Jun 28, 21:20 UTCJun 28, 21:30 UTC10m
2026-06-28 CES2075 - Jun 28, 04:20 UTCJun 28, 18:44 UTC14h 25m
2026-06-27 CES2075 - Jun 27, 04:19 UTCJun 27, 08:25 UTC4h 5m
2026-06-26 CES2075 - Jun 26, 04:20 UTCJun 26, 08:20 UTC4h 0m
2026-06-25 CES2076 - Jun 25, 21:25 UTCJun 25, 21:40 UTC15m
2026-06-25 CES2075 - Jun 25, 04:25 UTCJun 25, 08:09 UTC3h 45m
2026-06-24 CES5018 - Jun 24, 05:09 UTCJun 24, 06:04 UTC55m
2026-06-23 CES5017 - Jun 23, 09:24 UTCJun 24, 03:29 UTC18h 5m
2026-06-23 CES5334 - Jun 23, 01:50 UTCJun 23, 02:04 UTC15m
2026-06-22 CES5349 - Jun 22, 12:19 UTCJun 22, 12:49 UTC30m
2026-06-19 CES5328 - Jun 19, 02:19 UTCJun 19, 02:29 UTC10m
2026-06-15 CES5098 - Jun 15, 09:30 UTCJun 15, 10:09 UTC40m
2026-06-15 CES512 - Jun 15, 03:19 UTCJun 15, 07:50 UTC4h 30m
2026-06-15 CES511 - Jun 15, 01:10 UTCJun 15, 01:50 UTC40m
2026-06-12 CES5104 PEK → SHA Jun 12, 01:30 UTCJun 12, 01:40 UTC10m
2026-06-11 CES5302 CAN → SHA Jun 11, 02:00 UTCJun 11, 02:20 UTC20m
2026-06-09 CES5018 HKG → SHA Jun 9, 05:20 UTCJun 9, 05:40 UTC20m
2026-06-09 CES5017 SHA → HKG Jun 9, 03:00 UTCJun 9, 03:40 UTC40m
2026-06-08 CES5308 CAN → SHA Jun 8, 09:30 UTCJun 8, 09:40 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-6506 page for operator, model, and routing details .

Mode-S 7804B1 frequently asked

What is Mode-S code 7804B1?
7804B1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6506.
Where is Mode-S 7804B1 registered?
Mode-S code 7804B1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7804B1 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7804B1, octal 36002261, decimal 7,865,521.
What flights does 7804B1 operate?
Mode-S 7804B1 has broadcast 20 distinct callsigns, including CES2075, CES5018, CES5017, CSH9331, CES5348.