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 Jul 26, 21:25 UTC
Flights observed
157
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:25 UTC

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
CSN6043 China Southern Airlines 10 2026-07-26
CSN349 China Southern Airlines 10 2026-07-25
CSN3092 - 10 2026-06-16
CSN667 China Southern Airlines 9 2026-07-21
CSN391 China Southern Airlines 8 2026-07-23
CSN377 - 8 2026-07-18
CSN668 China Southern Airlines 7 2026-07-22
CSN6044 China Southern Airlines 7 2026-07-26
CSN378 China Southern Airlines 7 2026-07-18
CSN650 - 5 2026-07-09
CSN392 China Southern Airlines 5 2026-07-23
CSN350 China Southern Airlines 5 2026-07-25
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6044 NBO → CSX Jul 26, 17:45 UTCJul 26, 21:25 UTC3h 40m
2026-07-26 CSN6043 CSX → NBO Jul 26, 03:25 UTCJul 26, 03:45 UTC20m
2026-07-25 CSN6043 CSX → NBO Jul 25, 19:20 UTCJul 25, 22:40 UTC3h 20m
2026-07-25 CSN350 KUL → CAN Jul 25, 06:45 UTCJul 25, 07:00 UTC15m
2026-07-25 CSN349 CAN → KUL Jul 25, 04:45 UTCJul 25, 05:00 UTC15m
2026-07-25 CSN349 CAN → KUL Jul 25, 01:55 UTCJul 25, 02:05 UTC10m
2026-07-24 CSN350 KUL → CAN Jul 24, 06:35 UTCJul 24, 06:55 UTC20m
2026-07-24 CSN349 CAN → KUL Jul 24, 01:55 UTCJul 24, 05:05 UTC3h 10m
2026-07-23 CSN392 DAC → CAN Jul 23, 17:40 UTCJul 23, 19:00 UTC1h 20m
2026-07-23 CSN391 CAN → DAC Jul 23, 06:15 UTCJul 23, 15:30 UTC9h 15m
2026-07-23 CSN349 CAN → KUL Jul 23, 01:10 UTCJul 23, 04:20 UTC3h 10m
2026-07-22 CSN668 BEG → CAN Jul 22, 11:20 UTCJul 22, 17:25 UTC6h 5m
2026-07-21 CSN667 CAN → BEG Jul 21, 11:45 UTCJul 22, 05:25 UTC17h 40m
2026-07-21 CSN667 CAN → BEG Jul 21, 10:15 UTCJul 22, 05:25 UTC19h 10m
2026-07-21 CSN3081 CAN → BKK Jul 21, 08:10 UTCJul 21, 08:45 UTC35m
2026-07-19 CSN3582 SHA → CAN Jul 19, 18:10 UTCJul 19, 18:25 UTC15m
2026-07-18 CSN378 MAD → CAN Jul 18, 20:15 UTCJul 19, 00:50 UTC4h 35m
2026-07-18 CSN377 - Jul 18, 10:35 UTCJul 18, 15:30 UTC4h 55m
2026-07-17 CSN377 - Jul 17, 17:30 UTCJul 18, 15:30 UTC22h 1m
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

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 Jul 26, 21:25 UTC.
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 CSN6043, CSN349, CSN3092, CSN667, CSN391.