Apparatus

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sensors Mode-S transponder

7800E4

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6848 · AIRBUS A-321

Hex
7800E4
Octal
36000344
Decimal
7,864,548
Country
CN
Tail
B-6848
Type
A321
No current signal · last broadcast 5h ago
Flights observed
47
Distinct callsigns
16
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 7800E4.

Country allocation

The ICAO 24-bit address 7800E4 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 16 distinct

Callsign Airline Flights Last seen
CCA140 Air China 12 2026-06-04
CCA139 Air China 12 2026-06-04
CCA1734 Air China 3 2026-05-24
CCA1733 Air China 3 2026-05-24
CCA9810 Air China 2 2026-04-30
CCA9809 Air China 2 2026-04-19
CCA8352 Air China 2 2026-04-23
CCA726 Air China 2 2026-04-30
CCA725 Air China 2 2026-04-30
CCA8351 Air China 1 2026-04-23
CCA728 Air China 1 2026-05-13
CCA727 Air China 1 2026-05-13
CCA1737 Air China 1 2026-06-06
CCA1730 Air China 1 2026-06-02
CCA1728 Air China 1 2026-04-27
CCA1710 Air China 1 2026-05-05

Recent flights last 47

DateFlightRouteTakeoffLandingDuration
2026-06-06 CCA1737 HGH → SZX Jun 6, 03:20 UTCJun 6, 03:30 UTC10m
2026-06-04 CCA140 ICN → HGH Jun 4, 04:55 UTCJun 4, 05:25 UTC30m
2026-06-04 CCA139 HGH → ICN Jun 4, 02:45 UTCJun 4, 03:20 UTC35m
2026-06-02 CCA1730 PEK → HGH Jun 2, 12:55 UTCJun 2, 13:05 UTC10m
2026-06-02 CCA140 ICN → HGH Jun 2, 05:00 UTCJun 2, 05:30 UTC30m
2026-06-02 CCA139 HGH → ICN Jun 2, 02:45 UTCJun 2, 03:15 UTC30m
2026-05-29 CCA140 ICN → HGH May 29, 04:55 UTCMay 29, 05:30 UTC35m
2026-05-29 CCA139 HGH → ICN May 29, 02:30 UTCMay 29, 03:05 UTC35m
2026-05-28 CCA139 HGH → ICN May 28, 05:05 UTCMay 29, 03:05 UTC22h 0m
2026-05-28 CCA139 HGH → ICN May 28, 02:35 UTCMay 28, 03:05 UTC30m
2026-05-26 CCA140 ICN → HGH May 26, 05:00 UTCMay 26, 05:25 UTC25m
2026-05-26 CCA139 HGH → ICN May 26, 02:39 UTCMay 26, 03:15 UTC35m
2026-05-24 CCA1734 SZX → HGH May 24, 12:15 UTCMay 24, 12:25 UTC10m
2026-05-24 CCA1733 HGH → SZX May 24, 08:05 UTCMay 24, 08:25 UTC20m
2026-05-19 CCA1734 SZX → HGH May 19, 11:20 UTCMay 19, 11:30 UTC10m
2026-05-19 CCA1733 HGH → SZX May 19, 09:35 UTCMay 19, 09:55 UTC20m
2026-05-15 CCA140 ICN → HGH May 15, 04:50 UTCMay 15, 05:15 UTC25m
2026-05-15 CCA139 HGH → ICN May 15, 02:40 UTCMay 15, 03:10 UTC30m
2026-05-13 CCA728 HKG → HGH May 13, 10:55 UTCMay 13, 11:10 UTC15m
2026-05-13 CCA727 HGH → HKG May 13, 08:35 UTCMay 13, 08:55 UTC20m
2026-05-08 CCA140 ICN → HGH May 8, 04:49 UTCMay 8, 05:39 UTC50m
2026-05-08 CCA139 HGH → ICN May 8, 02:19 UTCMay 8, 03:04 UTC45m
2026-05-05 CCA1734 SZX → HGH May 5, 10:10 UTCMay 5, 10:25 UTC15m
2026-05-05 CCA1733 HGH → SZX May 5, 08:10 UTCMay 5, 08:30 UTC20m
2026-05-05 CCA1710 PEK → HGH May 5, 02:45 UTCMay 5, 03:00 UTC15m
2026-05-04 CCA140 ICN → HGH May 4, 05:00 UTCMay 4, 05:35 UTC35m
2026-05-04 CCA139 HGH → ICN May 4, 02:25 UTCMay 4, 03:05 UTC40m
2026-04-30 CCA9810 HAK → HGH Apr 30, 12:45 UTCApr 30, 13:00 UTC15m
2026-04-30 CCA726 KIX → HGH Apr 30, 04:00 UTCApr 30, 09:55 UTC5h 55m
2026-04-30 CCA725 HGH → KIX Apr 30, 01:40 UTCApr 30, 02:05 UTC25m
2026-04-29 CCA140 ICN → HGH Apr 29, 05:05 UTCApr 30, 02:05 UTC21h 0m
2026-04-29 CCA139 HGH → ICN Apr 29, 02:15 UTCApr 29, 02:50 UTC35m
2026-04-27 CCA1728 CAN → HGH Apr 27, 11:55 UTCApr 27, 12:05 UTC10m
2026-04-27 CCA726 KIX → HGH Apr 27, 04:10 UTCApr 27, 05:00 UTC50m
2026-04-27 CCA725 HGH → KIX Apr 27, 01:30 UTCApr 27, 01:50 UTC20m
2026-04-26 CCA140 ICN → HGH Apr 26, 05:05 UTCApr 27, 01:50 UTC20h 45m
2026-04-26 CCA140 ICN → HGH Apr 26, 04:45 UTCApr 27, 01:50 UTC21h 5m
2026-04-26 CCA139 HGH → ICN Apr 26, 02:40 UTCApr 26, 03:15 UTC35m
2026-04-23 CCA8352 ZUH → HGH Apr 23, 09:55 UTCApr 23, 10:30 UTC35m
2026-04-23 CCA8351 HGH → ZUH Apr 23, 03:50 UTCApr 23, 04:20 UTC30m
2026-04-22 CCA140 ICN → HGH Apr 22, 05:05 UTCApr 23, 03:10 UTC22h 5m
2026-04-22 CCA140 ICN → HGH Apr 22, 04:55 UTCApr 22, 05:40 UTC45m
2026-04-22 CCA139 HGH → ICN Apr 22, 02:25 UTCApr 22, 03:05 UTC40m
2026-04-19 CCA9810 HAK → HGH Apr 19, 12:15 UTCApr 19, 12:25 UTC10m
2026-04-19 CCA9809 HGH → HAK Apr 19, 08:40 UTCApr 19, 09:00 UTC20m
2026-04-16 CCA9809 HGH → HAK Apr 16, 10:05 UTCApr 16, 10:25 UTC20m
2026-04-16 CCA8352 ZUH → HGH Apr 16, 05:45 UTCApr 16, 06:00 UTC15m

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-6848 page for operator, model, and routing details .

Mode-S 7800E4 frequently asked

What is Mode-S code 7800E4?
7800E4 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6848.
Where is Mode-S 7800E4 registered?
Mode-S code 7800E4 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7800E4 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7800E4, octal 36000344, decimal 7,864,548.
What flights does 7800E4 operate?
Mode-S 7800E4 has broadcast 16 distinct callsigns, including CCA140, CCA139, CCA1734, CCA1733, CCA9810.