Apparatus

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sensors Mode-S transponder

78161C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-209D · BOEING 787-9 Dreamliner

Hex
78161C
Octal
36013034
Decimal
7,869,980
Country
CN
Tail
B-209D
Type
B789
No current signal · last broadcast 14h ago
Flights observed
139
Distinct callsigns
20
Country
CN
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 78161C.

Country allocation

The ICAO 24-bit address 78161C 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
CSN3092 - 10 2026-06-16
CSN6043 China Southern Airlines 8 2026-06-04
CSN667 - 7 2026-07-15
CSN391 - 7 2026-07-17
CSN668 - 6 2026-07-15
CSN6044 China Southern Airlines 6 2026-06-05
CSN378 - 6 2026-07-02
CSN377 - 6 2026-07-02
CSN349 China Southern Airlines 6 2026-07-17
CSN650 - 5 2026-07-09
CSN392 - 5 2026-07-17
CSN3091 - 5 2026-06-16
CSN304 China Southern Airlines 5 2026-06-07
CSN649 - 4 2026-07-08
CSN633 - 4 2026-07-05
CSN320 - 4 2026-06-26
CSN8069 - 3 2026-06-16
CSN8066 China Southern Airlines 3 2026-06-11
CSN8065 China Southern Airlines 3 2026-06-11
CSN678 China Southern Airlines 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSN392 - Jul 17, 17:30 UTCJul 17, 18:44 UTC1h 15m
2026-07-17 CSN391 - Jul 17, 14:20 UTCJul 17, 15:29 UTC1h 10m
2026-07-17 CSN350 - Jul 17, 06:15 UTCJul 17, 06:29 UTC15m
2026-07-17 CSN349 CAN → KUL Jul 17, 03:55 UTCJul 17, 04:29 UTC35m
2026-07-16 CSN392 - Jul 16, 17:35 UTCJul 16, 18:44 UTC1h 10m
2026-07-16 CSN391 - Jul 16, 14:29 UTCJul 16, 15:40 UTC1h 10m
2026-07-16 CSN391 - Jul 16, 12:25 UTCJul 16, 12:40 UTC15m
2026-07-15 CSN668 - Jul 15, 09:10 UTCJul 15, 11:45 UTC2h 35m
2026-07-15 CSN667 - Jul 15, 02:20 UTCJul 15, 05:25 UTC3h 5m
2026-07-13 CSN392 - Jul 13, 17:35 UTCJul 13, 18:40 UTC1h 5m
2026-07-13 CSN391 - Jul 13, 14:20 UTCJul 13, 15:30 UTC1h 10m
2026-07-13 CSN350 - Jul 13, 06:20 UTCJul 13, 06:35 UTC15m
2026-07-13 CSN349 - Jul 13, 04:05 UTCJul 13, 04:35 UTC30m
2026-07-13 CSN349 - Jul 13, 01:30 UTCJul 13, 01:40 UTC10m
2026-07-11 CSN350 - Jul 11, 06:40 UTCJul 11, 06:55 UTC15m
2026-07-11 CSN349 - Jul 11, 04:10 UTCJul 11, 04:50 UTC40m
2026-07-10 CSN3581 - Jul 10, 11:25 UTCJul 10, 11:40 UTC15m
2026-07-09 CSN650 - Jul 9, 10:55 UTCJul 9, 13:55 UTC3h 0m
2026-07-08 CSN649 - Jul 8, 22:00 UTCJul 9, 04:05 UTC6h 5m
2026-07-06 CSN634 - Jul 6, 15:35 UTCJul 6, 19:10 UTC3h 35m
2026-07-05 CSN633 - Jul 5, 18:15 UTCJul 5, 22:50 UTC4h 35m
2026-07-04 CSN5094 - Jul 4, 10:10 UTCJul 4, 16:20 UTC6h 10m
2026-07-03 CSN5093 - Jul 3, 22:55 UTCJul 4, 05:50 UTC6h 55m
2026-07-03 CSN5093 - Jul 3, 01:05 UTCJul 3, 23:45 UTC22h 40m
2026-07-02 CSN378 - Jul 2, 23:05 UTCJul 3, 23:00 UTC23h 55m
2026-07-02 CSN378 - Jul 2, 20:30 UTCJul 3, 01:10 UTC4h 40m
2026-07-02 CSN377 - Jul 2, 10:15 UTCJul 2, 15:40 UTC5h 25m
2026-07-01 CSN377 - Jul 1, 19:35 UTCJul 2, 15:40 UTC20h 5m
2026-07-01 CSN377 - Jul 1, 17:30 UTCJul 2, 15:40 UTC22h 10m
2026-07-01 CSN391 - Jul 1, 06:35 UTCJul 1, 15:45 UTC9h 10m
2026-07-01 CSN349 - Jul 1, 03:45 UTCJul 1, 04:15 UTC30m
2026-07-01 CSN349 - Jul 1, 01:10 UTCJul 1, 01:20 UTC10m
2026-06-30 CSN392 - Jun 30, 17:45 UTCJun 30, 18:55 UTC1h 10m
2026-06-30 CSN391 - Jun 30, 13:00 UTCJun 30, 16:05 UTC3h 5m
2026-06-29 CSN634 - Jun 29, 15:24 UTCJun 29, 19:15 UTC3h 50m
2026-06-28 CSN633 - Jun 28, 18:00 UTCJun 28, 22:10 UTC4h 10m
2026-06-28 CSN633 - Jun 28, 00:20 UTCJun 28, 22:10 UTC21h 50m
2026-06-27 CSN378 - Jun 27, 21:04 UTCJun 28, 20:14 UTC23h 10m
2026-06-27 CSN378 - Jun 27, 19:29 UTCJun 28, 18:59 UTC23h 30m
2026-06-27 CSN377 - Jun 27, 10:34 UTCJun 27, 16:00 UTC5h 25m
2026-06-26 CSN320 - Jun 26, 22:34 UTCJun 26, 23:15 UTC40m
2026-06-26 CSN320 - Jun 26, 15:45 UTCJun 26, 20:55 UTC5h 10m
2026-06-26 CSN319 - Jun 26, 06:39 UTCJun 26, 13:45 UTC7h 5m
2026-06-23 CSN332 - Jun 23, 12:25 UTCJun 23, 18:29 UTC6h 5m
2026-06-22 CSN331 - Jun 22, 21:54 UTCJun 23, 04:14 UTC6h 20m
2026-06-19 CSN678 CGO → CAN Jun 19, 13:09 UTCJun 19, 19:14 UTC6h 5m
2026-06-18 CSN677 CGO → LUX Jun 18, 10:20 UTCJun 18, 16:55 UTC6h 35m
2026-06-17 CSN320 - Jun 17, 22:20 UTCJun 17, 22:50 UTC30m
2026-06-17 CSN320 - Jun 17, 15:46 UTCJun 17, 20:35 UTC4h 50m
2026-06-17 CSN319 - Jun 17, 07:05 UTCJun 17, 14:15 UTC7h 10m

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

Mode-S 78161C frequently asked

What is Mode-S code 78161C?
78161C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-209D.
Where is Mode-S 78161C registered?
Mode-S code 78161C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78161C broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78161C, octal 36013034, decimal 7,869,980.
What flights does 78161C operate?
Mode-S 78161C has broadcast 20 distinct callsigns, including CSN3092, CSN6043, CSN667, CSN391, CSN668.