Apparatus

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sensors Mode-S transponder

78161D

ICAO 24-bit transponder address · allocated to China

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

Hex
78161D
Octal
36013035
Decimal
7,869,981
Country
CN
Tail
B-209E
Type
B789
No current signal · last broadcast Jul 24, 23:45 UTC
Flights observed
193
Distinct callsigns
20
Country
CN
Last broadcast
Jul 24, 23:45 UTC

Last known position

Most recent position reported by Mode-S 78161D.

Country allocation

The ICAO 24-bit address 78161D 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
CSN377 China Southern Airlines 17 2026-07-24
CSN354 China Southern Airlines 14 2026-05-26
CSN3092 China Southern Airlines 14 2026-06-10
CSN378 China Southern Airlines 11 2026-07-24
CSN331 - 11 2026-07-13
CSN3091 China Southern Airlines 10 2026-06-10
CSN391 - 9 2026-07-02
CSN332 - 9 2026-07-14
CSN392 - 8 2026-07-07
CSN650 China Southern Airlines 7 2026-07-23
CSN353 China Southern Airlines 7 2026-05-26
CSN664 - 6 2026-07-20
CSN320 - 6 2026-07-03
CSN8069 China Southern Airlines 5 2026-06-09
CSN649 China Southern Airlines 5 2026-07-22
CSN6043 - 5 2026-07-09
CSN8049 - 4 2026-07-06
CSN633 - 4 2026-06-21
CSN663 China Southern Airlines 3 2026-07-19
CSN6044 - 3 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CSN378 MAD → CAN Jul 24, 19:15 UTCJul 24, 23:45 UTC4h 30m
2026-07-24 CSN377 CAN → MAD Jul 24, 09:55 UTCJul 24, 15:45 UTC5h 50m
2026-07-23 CSN377 CAN → MAD Jul 23, 13:20 UTCJul 24, 13:15 UTC23h 55m
2026-07-23 CSN650 BUD → CAN Jul 23, 11:20 UTCJul 24, 11:10 UTC23h 50m
2026-07-23 CSN650 BUD → CAN Jul 23, 10:55 UTCJul 23, 13:50 UTC2h 55m
2026-07-22 CSN649 CAN → BUD Jul 22, 21:45 UTCJul 23, 03:45 UTC6h 0m
2026-07-21 CSN650 BUD → CAN Jul 21, 11:00 UTCJul 21, 13:45 UTC2h 45m
2026-07-20 CSN649 CAN → BUD Jul 20, 21:50 UTCJul 21, 04:00 UTC6h 9m
2026-07-20 CSN664 - Jul 20, 08:55 UTCJul 20, 09:25 UTC30m
2026-07-20 CSN664 - Jul 20, 01:00 UTCJul 20, 08:10 UTC7h 10m
2026-07-19 CSN663 CAN → ADL Jul 19, 15:00 UTCJul 19, 22:45 UTC7h 45m
2026-07-19 CSN350 KUL → CAN Jul 19, 06:25 UTCJul 19, 06:40 UTC15m
2026-07-19 CSN349 CAN → KUL Jul 19, 01:20 UTCJul 19, 04:25 UTC3h 5m
2026-07-16 CSN378 MAD → CAN Jul 16, 19:14 UTCJul 16, 23:49 UTC4h 35m
2026-07-16 CSN377 - Jul 16, 10:10 UTCJul 16, 15:49 UTC5h 40m
2026-07-14 CSN332 - Jul 14, 12:20 UTCJul 14, 18:25 UTC6h 5m
2026-07-13 CSN331 - Jul 13, 22:15 UTCJul 14, 04:35 UTC6h 20m
2026-07-12 CSN3082 - Jul 12, 09:05 UTCJul 12, 09:20 UTC15m
2026-07-12 CSN3081 - Jul 12, 06:45 UTCJul 12, 07:01 UTC15m
2026-07-11 CSN6044 - Jul 11, 03:01 UTCJul 11, 03:10 UTC10m
2026-07-10 CSN6044 - Jul 10, 17:40 UTCJul 10, 21:30 UTC3h 50m
2026-07-09 CSN6043 - Jul 9, 06:10 UTCJul 9, 22:20 UTC16h 10m
2026-07-09 CSN349 - Jul 9, 03:55 UTCJul 9, 04:15 UTC20m
2026-07-08 CSN3522 - Jul 8, 06:15 UTCJul 8, 06:50 UTC35m
2026-07-07 CSN392 - Jul 7, 17:35 UTCJul 7, 18:45 UTC1h 10m
2026-07-06 CSN8050 - Jul 6, 21:20 UTCJul 7, 15:30 UTC18h 10m
2026-07-06 CSN8050 LGW → DAC Jul 6, 20:55 UTCJul 7, 15:30 UTC18h 35m
2026-07-06 CSN8049 - Jul 6, 11:50 UTCJul 6, 18:35 UTC6h 45m
2026-07-05 CSN8049 - Jul 5, 21:20 UTCJul 6, 18:35 UTC21h 15m
2026-07-05 CSN8049 - Jul 5, 19:50 UTCJul 6, 18:35 UTC22h 45m
2026-07-05 CSN8049 - Jul 5, 17:55 UTCJul 6, 17:15 UTC23h 20m
2026-07-04 CSN6043 - Jul 4, 07:15 UTCJul 4, 22:25 UTC15h 10m
2026-07-04 CSN337 - Jul 4, 05:15 UTCJul 4, 05:50 UTC35m
2026-07-03 CSN320 - Jul 3, 22:40 UTCJul 3, 22:55 UTC15m
2026-07-03 CSN320 - Jul 3, 15:40 UTCJul 3, 20:45 UTC5h 5m
2026-07-03 CSN319 - Jul 3, 08:55 UTCJul 3, 14:00 UTC5h 5m
2026-07-02 CSN392 - Jul 2, 17:35 UTCJul 2, 19:40 UTC2h 5m
2026-07-02 CSN391 - Jul 2, 12:20 UTCJul 2, 15:25 UTC3h 5m
2026-07-02 CSN350 - Jul 2, 06:25 UTCJul 2, 09:00 UTC2h 35m
2026-07-02 CSN349 - Jul 2, 01:30 UTCJul 2, 04:45 UTC3h 15m
2026-06-30 CSN332 - Jun 30, 22:55 UTCJun 30, 23:05 UTC10m
2026-06-30 CSN332 - Jun 30, 12:30 UTCJun 30, 18:20 UTC5h 50m
2026-06-29 CSN331 - Jun 29, 21:54 UTCJun 30, 04:35 UTC6h 41m
2026-06-28 CSN331 - Jun 28, 23:39 UTCJun 29, 22:39 UTC23h 0m
2026-06-28 CSN378 - Jun 28, 19:20 UTCJun 29, 00:10 UTC4h 50m
2026-06-28 CSN377 - Jun 28, 11:04 UTCJun 28, 17:00 UTC5h 55m
2026-06-27 CSN377 - Jun 27, 15:19 UTCJun 28, 15:14 UTC23h 55m
2026-06-27 CSN332 - Jun 27, 13:20 UTCJun 28, 13:14 UTC23h 55m
2026-06-27 CSN332 - Jun 27, 12:19 UTCJun 28, 11:14 UTC22h 55m
2026-06-26 CSN331 - Jun 26, 22:10 UTCJun 27, 04:15 UTC6h 5m

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

Mode-S 78161D frequently asked

What is Mode-S code 78161D?
78161D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-209E.
Where is Mode-S 78161D registered?
Mode-S code 78161D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78161D broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 23:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78161D, octal 36013035, decimal 7,869,981.
What flights does 78161D operate?
Mode-S 78161D has broadcast 20 distinct callsigns, including CSN377, CSN354, CSN3092, CSN378, CSN331.