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
96
Distinct callsigns
20
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 20 distinct

Callsign Airline Flights Last seen
CCA139 - 27 2026-06-30
CCA140 - 22 2026-06-30
CCA1733 - 5 2026-06-28
CCA1737 - 4 2026-06-28
CCA1734 Air China 4 2026-06-11
CCA8356 Air China 3 2026-07-21
CCA8352 Air China 3 2026-06-10
CCA726 - 3 2026-06-15
CCA725 - 3 2026-06-15
CCA9810 Air China 2 2026-04-30
CCA9809 Air China 2 2026-04-19
CCA8351 Air China 2 2026-06-10
CCA1738 Air China 2 2026-06-07
CCA146 Air China 2 2026-06-12
CCA145 Air China 2 2026-06-12
CCA728 Air China 1 2026-05-13
CCA727 Air China 1 2026-05-13
CCA1788 - 1 2026-07-13
CCA1787 - 1 2026-07-14
CCA1730 Air China 1 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 CCA8356 HLD → HGH Jul 21, 05:45 UTCJul 21, 05:55 UTC10m
2026-07-17 CCA8356 - Jul 17, 05:10 UTCJul 17, 05:25 UTC15m
2026-07-16 CCA8356 - Jul 16, 07:40 UTCJul 17, 05:25 UTC21h 45m
2026-07-14 CCA1787 - Jul 14, 23:40 UTCJul 15, 01:50 UTC2h 10m
2026-07-13 CCA1788 - Jul 13, 07:20 UTCJul 13, 23:50 UTC16h 30m
2026-06-30 CCA140 - Jun 30, 04:55 UTCJun 30, 05:40 UTC45m
2026-06-30 CCA139 - Jun 30, 02:25 UTCJun 30, 03:10 UTC45m
2026-06-29 CCA139 - Jun 29, 05:04 UTCJun 30, 03:10 UTC22h 6m
2026-06-29 CCA140 - Jun 29, 04:45 UTCJun 30, 03:00 UTC22h 16m
2026-06-29 CCA139 - Jun 29, 02:20 UTCJun 29, 02:59 UTC40m
2026-06-28 CCA1733 - Jun 28, 10:50 UTCJun 28, 11:04 UTC15m
2026-06-28 CCA1737 - Jun 28, 01:19 UTCJun 28, 01:29 UTC10m
2026-06-27 CCA140 - Jun 27, 04:54 UTCJun 27, 05:44 UTC50m
2026-06-27 CCA139 - Jun 27, 02:09 UTCJun 27, 02:50 UTC40m
2026-06-26 CCA139 - Jun 26, 04:39 UTCJun 27, 02:50 UTC22h 10m
2026-06-26 CCA149 - Jun 26, 02:44 UTCJun 26, 03:05 UTC20m
2026-06-25 CCA140 - Jun 25, 05:25 UTCJun 25, 06:09 UTC45m
2026-06-25 CCA139 - Jun 25, 02:19 UTCJun 25, 02:59 UTC40m
2026-06-24 CCA139 - Jun 24, 05:05 UTCJun 25, 02:59 UTC21h 55m
2026-06-24 CCA140 - Jun 24, 04:55 UTCJun 25, 02:59 UTC22h 5m
2026-06-24 CCA139 - Jun 24, 02:05 UTCJun 24, 03:00 UTC55m
2026-06-23 CCA140 - Jun 23, 05:09 UTCJun 23, 05:34 UTC25m
2026-06-23 CCA139 - Jun 23, 02:29 UTCJun 23, 03:09 UTC40m
2026-06-22 CCA139 - Jun 22, 05:04 UTCJun 23, 03:09 UTC22h 5m
2026-06-22 CCA140 - Jun 22, 04:44 UTCJun 23, 03:00 UTC22h 15m
2026-06-22 CCA139 - Jun 22, 02:19 UTCJun 22, 02:54 UTC35m
2026-06-21 CCA139 - Jun 21, 05:04 UTCJun 22, 02:54 UTC21h 50m
2026-06-21 CCA139 - Jun 21, 03:05 UTCJun 21, 03:44 UTC40m
2026-06-19 CCA1737 - Jun 19, 01:54 UTCJun 19, 02:14 UTC20m
2026-06-17 CCA140 - Jun 17, 05:10 UTCJun 17, 05:40 UTC30m
2026-06-17 CCA139 - Jun 17, 02:40 UTCJun 17, 03:15 UTC35m
2026-06-16 CCA140 - Jun 16, 04:55 UTCJun 16, 05:40 UTC45m
2026-06-16 CCA139 - Jun 16, 02:45 UTCJun 16, 03:20 UTC35m
2026-06-15 CCA726 - Jun 15, 03:40 UTCJun 16, 03:00 UTC23h 20m
2026-06-15 CCA725 - Jun 15, 01:15 UTCJun 15, 02:10 UTC55m
2026-06-13 CCA140 - Jun 13, 05:05 UTCJun 13, 05:50 UTC45m
2026-06-12 CCA146 NRT → HGH Jun 12, 12:20 UTCJun 13, 03:20 UTC15h 0m
2026-06-12 CCA145 HGH → NRT Jun 12, 08:20 UTCJun 12, 09:55 UTC1h 35m
2026-06-12 CCA1712 PEK → HGH Jun 12, 03:50 UTCJun 12, 04:00 UTC10m
2026-06-11 CCA1734 SZX → HGH Jun 11, 11:05 UTCJun 11, 11:15 UTC10m
2026-06-11 CCA1733 HGH → SZX Jun 11, 09:15 UTCJun 11, 09:25 UTC10m
2026-06-11 CCA150 TPE → HGH Jun 11, 04:45 UTCJun 11, 05:10 UTC25m
2026-06-10 CCA146 NRT → HGH Jun 10, 13:00 UTCJun 11, 03:05 UTC14h 5m
2026-06-10 CCA145 HGH → NRT Jun 10, 09:35 UTCJun 10, 10:50 UTC1h 15m
2026-06-10 CCA8352 ZUH → HGH Jun 10, 05:10 UTCJun 10, 05:20 UTC10m
2026-06-10 CCA8351 HGH → ZUH Jun 10, 03:25 UTCJun 10, 03:45 UTC20m
2026-06-07 CCA1738 SZX → HGH Jun 7, 04:50 UTCJun 7, 05:00 UTC10m
2026-06-07 CCA1737 HGH → SZX Jun 7, 02:25 UTCJun 7, 02:40 UTC15m
2026-06-06 CCA1738 SZX → HGH Jun 6, 07:20 UTCJun 6, 07:35 UTC15m
2026-06-06 CCA1737 HGH → SZX Jun 6, 03:20 UTCJun 6, 03:30 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-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 20 distinct callsigns, including CCA139, CCA140, CCA1733, CCA1737, CCA1734.