Apparatus

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sensors Mode-S transponder

7800DC

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5202 · BOEING 737-700

Hex
7800DC
Octal
36000334
Decimal
7,864,540
Country
CN
Tail
B-5202
Type
B737
No current signal · last broadcast Jul 24, 23:05 UTC
Flights observed
52
Distinct callsigns
20
Country
CN
Last broadcast
Jul 24, 23:05 UTC

Last known position

Most recent position reported by Mode-S 7800DC.

Country allocation

The ICAO 24-bit address 7800DC 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
CCA1441 Air China 15 2026-07-24
CCA1499 - 11 2026-07-13
CCA4344 Air China 3 2026-05-24
CCA1500 Air China 3 2026-07-18
CCA1442 Air China 2 2026-07-24
CCA4343 Air China 1 2026-04-18
CCA4144 Air China 1 2026-04-23
CCA4141 Air China 1 2026-04-22
CCA1892 - 1 2026-04-20
CCA1891 - 1 2026-04-20
CCA1887 Air China 1 2026-04-19
CCA1487 - 1 2026-06-24
CCA1455 - 1 2026-07-18
CCA1278 - 1 2026-06-24
CCA1277 - 1 2026-06-23
CCA1268 Air China 1 2026-04-23
CCA1267 Air China 1 2026-04-22
CCA1234 - 1 2026-04-19
CCA1233 - 1 2026-04-18
CCA1144 - 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CCA1441 PEK → DLU Jul 24, 22:35 UTCJul 24, 23:05 UTC30m
2026-07-24 CCA1442 DLU → PEK Jul 24, 07:05 UTCJul 24, 14:50 UTC7h 45m
2026-07-22 CCA1441 - Jul 22, 22:30 UTCJul 22, 22:50 UTC20m
2026-07-18 CCA1441 - Jul 18, 22:40 UTCJul 18, 23:00 UTC20m
2026-07-18 CCA1455 - Jul 18, 10:40 UTCJul 18, 10:55 UTC15m
2026-07-18 CCA1500 DLU → PEK Jul 18, 08:00 UTCJul 18, 08:10 UTC10m
2026-07-13 CCA1441 - Jul 13, 22:30 UTCJul 13, 22:50 UTC20m
2026-07-13 CCA1442 - Jul 13, 14:15 UTCJul 13, 14:35 UTC20m
2026-07-13 CCA1499 - Jul 13, 06:45 UTCJul 13, 07:01 UTC15m
2026-07-10 CCA1441 - Jul 10, 22:40 UTCJul 10, 22:55 UTC15m
2026-07-10 CCA1499 - Jul 10, 07:40 UTCJul 10, 08:00 UTC20m
2026-07-07 CCA1441 - Jul 7, 22:40 UTCJul 7, 23:00 UTC20m
2026-07-07 CCA1499 - Jul 7, 10:50 UTCJul 7, 11:15 UTC25m
2026-07-04 CCA1441 - Jul 4, 22:40 UTCJul 4, 23:00 UTC20m
2026-07-04 CCA1499 - Jul 4, 06:45 UTCJul 4, 07:05 UTC20m
2026-07-01 CCA1441 - Jul 1, 22:40 UTCJul 1, 23:00 UTC20m
2026-07-01 CCA1499 - Jul 1, 06:40 UTCJul 1, 07:00 UTC20m
2026-06-27 CCA1441 - Jun 27, 22:40 UTCJun 27, 23:00 UTC20m
2026-06-27 CCA1499 - Jun 27, 06:40 UTCJun 27, 06:50 UTC10m
2026-06-27 CCA1500 DLU → PEK Jun 27, 04:44 UTCJun 27, 04:59 UTC15m
2026-06-24 CCA1441 - Jun 24, 22:35 UTCJun 24, 22:55 UTC20m
2026-06-24 CCA1123 - Jun 24, 12:09 UTCJun 24, 12:20 UTC10m
2026-06-24 CCA1487 - Jun 24, 04:55 UTCJun 24, 05:15 UTC20m
2026-06-24 CCA1278 - Jun 24, 01:44 UTCJun 24, 02:05 UTC20m
2026-06-23 CCA1277 - Jun 23, 12:05 UTCJun 23, 12:29 UTC25m
2026-06-13 CCA1499 PEK → DLU Jun 13, 06:35 UTCJun 13, 06:55 UTC20m
2026-06-05 CCA1441 PEK → DLU Jun 5, 22:40 UTCJun 5, 23:00 UTC20m
2026-06-05 CCA1499 PEK → DLU Jun 5, 06:50 UTCJun 5, 07:05 UTC15m
2026-05-30 CCA1441 PEK → DLU May 30, 22:35 UTCMay 30, 22:55 UTC20m
2026-05-30 CCA1499 PEK → DLU May 30, 06:50 UTCMay 30, 07:05 UTC15m
2026-05-24 CCA4344 SZX → CKG May 24, 02:35 UTCMay 24, 02:50 UTC15m
2026-05-06 CCA1441 PEK → DLU May 6, 22:45 UTCMay 6, 23:15 UTC30m
2026-05-06 CCA1499 PEK → DLU May 6, 07:45 UTCMay 6, 08:15 UTC30m
2026-05-02 CCA4344 SZX → CKG May 2, 02:40 UTCMay 2, 02:50 UTC10m
2026-04-30 CCA1441 PEK → DLU Apr 30, 22:35 UTCApr 30, 23:05 UTC30m
2026-04-30 CCA1499 PEK → DLU Apr 30, 06:55 UTCApr 30, 07:10 UTC15m
2026-04-30 CCA1500 DLU → PEK Apr 30, 05:05 UTCApr 30, 05:15 UTC10m
2026-04-23 CCA4144 PEK → CKG Apr 23, 12:10 UTCApr 23, 12:20 UTC10m
2026-04-23 CCA1268 XNN → PEK Apr 23, 03:10 UTCApr 23, 03:35 UTC25m
2026-04-22 CCA1267 PEK → XNN Apr 22, 22:40 UTCApr 22, 23:05 UTC25m
2026-04-22 CCA1119 - Apr 22, 10:30 UTCApr 22, 10:40 UTC10m
2026-04-22 CCA4141 CKG → PEK Apr 22, 08:01 UTCApr 22, 08:10 UTC10m
2026-04-20 CCA1441 PEK → DLU Apr 20, 22:40 UTCApr 20, 23:10 UTC30m
2026-04-20 CCA1892 - Apr 20, 10:50 UTCApr 20, 11:05 UTC15m
2026-04-20 CCA1891 - Apr 20, 05:45 UTCApr 20, 05:55 UTC10m
2026-04-20 CCA1144 - Apr 20, 02:55 UTCApr 20, 03:10 UTC15m
2026-04-19 CCA1143 - Apr 19, 23:55 UTCApr 20, 00:15 UTC20m
2026-04-19 CCA1887 PEK → JDZ Apr 19, 10:10 UTCApr 19, 10:20 UTC10m
2026-04-19 CCA1234 - Apr 19, 08:00 UTCApr 19, 08:20 UTC20m
2026-04-18 CCA1233 - Apr 18, 23:40 UTCApr 18, 23:50 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-5202 page for operator, model, and routing details .

Mode-S 7800DC frequently asked

What is Mode-S code 7800DC?
7800DC is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5202.
Where is Mode-S 7800DC registered?
Mode-S code 7800DC is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7800DC broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 23:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7800DC, octal 36000334, decimal 7,864,540.
What flights does 7800DC operate?
Mode-S 7800DC has broadcast 20 distinct callsigns, including CCA1441, CCA1499, CCA4344, CCA1500, CCA1442.