Apparatus

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sensors Mode-S transponder

78165C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-209Q · BOEING 737 MAX 8

Hex
78165C
Octal
36013134
Decimal
7,870,044
Country
CN
Tail
B-209Q
Type
B38M
No current signal · last broadcast 11h ago
Flights observed
156
Distinct callsigns
20
Country
CN
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 78165C.

Country allocation

The ICAO 24-bit address 78165C 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
CCA1491 Air China 7 2026-06-08
CCA1244 - 7 2026-07-16
CCA1296 - 5 2026-07-08
CCA1256 - 5 2026-07-08
CCA1447 Air China 4 2026-05-04
CCA1446 - 4 2026-07-10
CCA1445 - 4 2026-07-10
CCA1255 - 4 2026-07-01
CCA1243 Air China 4 2026-07-01
CCA107 - 4 2026-06-13
CCA1544 - 3 2026-05-09
CCA1448 Air China 3 2026-05-04
CCA1399 Air China 3 2026-05-04
CCA1242 - 3 2026-07-13
CCA108 - 3 2026-06-15
CCA902 - 2 2026-07-09
CCA901 - 2 2026-07-09
CCA724 - 2 2026-07-09
CCA723 - 2 2026-07-09
CCA713 - 2 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CCA9665 HGH → SZX Jul 18, 00:25 UTCJul 18, 00:45 UTC20m
2026-07-16 CCA1244 - Jul 16, 22:55 UTCJul 17, 15:05 UTC16h 10m
2026-07-16 CCA1246 - Jul 16, 17:25 UTCJul 16, 17:45 UTC20m
2026-07-15 CCA1250 - Jul 15, 16:15 UTCJul 15, 16:35 UTC20m
2026-07-15 CCA1249 - Jul 15, 05:55 UTCJul 15, 06:15 UTC20m
2026-07-15 CCA118 - Jul 15, 01:00 UTCJul 15, 01:15 UTC15m
2026-07-14 CCA117 - Jul 14, 12:50 UTCJul 14, 13:30 UTC40m
2026-07-14 CCA117 - Jul 14, 10:20 UTCJul 14, 10:40 UTC20m
2026-07-14 CCA9612 - Jul 14, 04:50 UTCJul 14, 05:10 UTC20m
2026-07-13 CCA1242 - Jul 13, 06:50 UTCJul 13, 07:10 UTC20m
2026-07-12 CCA1244 - Jul 12, 14:50 UTCJul 12, 15:10 UTC20m
2026-07-10 CCA4136 - Jul 10, 14:25 UTCJul 10, 14:45 UTC20m
2026-07-10 CCA1446 - Jul 10, 10:40 UTCJul 10, 10:55 UTC15m
2026-07-10 CCA1445 - Jul 10, 02:55 UTCJul 10, 03:15 UTC20m
2026-07-09 CCA9741 - Jul 9, 14:35 UTCJul 9, 15:00 UTC25m
2026-07-09 CCA724 - Jul 9, 12:15 UTCJul 9, 12:30 UTC15m
2026-07-09 CCA723 - Jul 9, 07:55 UTCJul 9, 08:05 UTC10m
2026-07-09 CCA902 - Jul 9, 05:25 UTCJul 9, 05:40 UTC15m
2026-07-09 CCA901 - Jul 9, 01:05 UTCJul 9, 01:20 UTC15m
2026-07-08 CCA1256 - Jul 8, 17:00 UTCJul 8, 17:15 UTC15m
2026-07-08 CCA1296 - Jul 8, 05:30 UTCJul 8, 05:40 UTC10m
2026-07-06 CCA1973 - Jul 6, 13:55 UTCJul 6, 14:15 UTC20m
2026-07-04 CCA1295 - Jul 4, 12:55 UTCJul 4, 13:10 UTC15m
2026-07-04 CCA1446 - Jul 4, 03:10 UTCJul 4, 10:55 UTC7h 45m
2026-07-03 CCA724 - Jul 3, 12:55 UTCJul 3, 13:15 UTC20m
2026-07-03 CCA723 - Jul 3, 08:50 UTCJul 3, 09:05 UTC15m
2026-07-03 CCA902 - Jul 3, 05:35 UTCJul 3, 05:50 UTC15m
2026-07-03 CCA901 - Jul 3, 00:50 UTCJul 3, 01:00 UTC10m
2026-07-02 CCA1244 - Jul 2, 13:55 UTCJul 2, 14:15 UTC20m
2026-07-01 CCA1243 PEK → URC Jul 1, 23:05 UTCJul 1, 23:25 UTC20m
2026-07-01 CCA1256 - Jul 1, 17:15 UTCJul 1, 17:30 UTC15m
2026-07-01 CCA1255 - Jul 1, 08:10 UTCJul 1, 08:30 UTC20m
2026-07-01 CCA1296 - Jul 1, 06:00 UTCJul 1, 06:20 UTC20m
2026-06-30 CCA713 - Jun 30, 13:00 UTCJun 30, 23:45 UTC10h 45m
2026-06-29 CCA713 - Jun 29, 13:39 UTCJun 30, 13:00 UTC23h 21m
2026-06-29 CCA1216 - Jun 29, 09:50 UTCJun 29, 10:10 UTC20m
2026-06-28 CCA1215 - Jun 28, 22:59 UTCJun 28, 23:20 UTC20m
2026-06-28 CCA1256 - Jun 28, 18:10 UTCJun 28, 18:25 UTC15m
2026-06-28 CCA1255 - Jun 28, 09:10 UTCJun 28, 09:30 UTC20m
2026-06-28 CCA1296 - Jun 28, 06:44 UTCJun 28, 06:59 UTC15m
2026-06-27 CCA1446 - Jun 27, 10:34 UTCJun 27, 10:54 UTC20m
2026-06-27 CCA1445 - Jun 27, 02:35 UTCJun 27, 02:55 UTC20m
2026-06-26 CCA1244 URC → PEK Jun 26, 14:19 UTCJun 26, 14:39 UTC20m
2026-06-25 CCA1243 PEK → URC Jun 25, 22:54 UTCJun 25, 23:14 UTC20m
2026-06-25 CCA1222 - Jun 25, 13:20 UTCJun 25, 13:40 UTC20m
2026-06-25 CCA1221 - Jun 25, 09:05 UTCJun 25, 09:25 UTC20m
2026-06-24 CCA1244 URC → PEK Jun 24, 14:29 UTCJun 24, 14:50 UTC20m
2026-06-23 CCA1243 PEK → URC Jun 23, 22:55 UTCJun 23, 23:05 UTC10m
2026-06-23 CCA1246 HTN → PEK Jun 23, 16:20 UTCJun 23, 16:39 UTC20m
2026-06-23 CCA1245 - Jun 23, 05:34 UTCJun 23, 05:54 UTC20m

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-209Q page for operator, model, and routing details .

Mode-S 78165C frequently asked

What is Mode-S code 78165C?
78165C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-209Q.
Where is Mode-S 78165C registered?
Mode-S code 78165C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78165C broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78165C, octal 36013134, decimal 7,870,044.
What flights does 78165C operate?
Mode-S 78165C has broadcast 20 distinct callsigns, including CCA1491, CCA1244, CCA1296, CCA1256, CCA1447.