Apparatus

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sensors Mode-S transponder

781915

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20EH · BOEING 787-9 Dreamliner

Hex
781915
Octal
36014425
Decimal
7,870,741
Country
CN
Tail
B-20EH
Type
B789
No current signal · last broadcast 1h ago
Flights observed
166
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 781915.

Country allocation

The ICAO 24-bit address 781915 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
CSN320 - 14 2026-06-29
CSN6043 - 11 2026-06-18
CSN354 - 10 2026-06-24
CSN319 - 10 2026-06-29
CSN664 - 8 2026-06-22
CSN6044 - 8 2026-06-19
CSN332 - 8 2026-07-04
CSN303 - 8 2026-06-20
CSN377 - 7 2026-07-05
CSN331 - 7 2026-07-03
CSN8089 China Southern Airlines 6 2026-05-21
CSN667 - 6 2026-07-07
CSN663 - 6 2026-06-21
CSN378 - 5 2026-07-05
CSN353 - 5 2026-06-24
CSN304 - 5 2026-06-20
CSN8090 China Southern Airlines 4 2026-05-21
CSN668 - 4 2026-07-08
CSN649 - 3 2026-07-10
CSN644 China Southern Airlines 3 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN350 - Jul 14, 07:00 UTCJul 14, 07:15 UTC15m
2026-07-14 CSN349 - Jul 14, 02:10 UTCJul 14, 05:20 UTC3h 10m
2026-07-13 CSN634 - Jul 13, 15:00 UTCJul 13, 18:45 UTC3h 45m
2026-07-12 CSN633 - Jul 12, 19:01 UTCJul 12, 22:00 UTC3h 0m
2026-07-12 CSN350 - Jul 12, 06:10 UTCJul 12, 06:25 UTC15m
2026-07-12 CSN349 - Jul 12, 03:35 UTCJul 12, 04:10 UTC35m
2026-07-11 CSN650 - Jul 11, 10:55 UTCJul 11, 13:45 UTC2h 50m
2026-07-10 CSN649 - Jul 10, 09:20 UTCJul 11, 04:05 UTC18h 45m
2026-07-10 CSN649 - Jul 10, 09:10 UTCJul 11, 04:05 UTC18h 55m
2026-07-10 CSN3081 - Jul 10, 06:30 UTCJul 10, 07:10 UTC40m
2026-07-08 CSN668 - Jul 8, 09:20 UTCJul 8, 12:00 UTC2h 40m
2026-07-07 CSN667 - Jul 7, 13:15 UTCJul 8, 05:40 UTC16h 25m
2026-07-05 CSN378 - Jul 5, 19:20 UTCJul 6, 00:00 UTC4h 40m
2026-07-05 CSN377 - Jul 5, 10:00 UTCJul 5, 15:30 UTC5h 30m
2026-07-04 CSN377 - Jul 4, 18:00 UTCJul 5, 15:30 UTC21h 30m
2026-07-04 CSN377 - Jul 4, 13:20 UTCJul 5, 13:15 UTC23h 55m
2026-07-04 CSN332 - Jul 4, 12:25 UTCJul 5, 11:15 UTC22h 50m
2026-07-03 CSN331 - Jul 3, 10:00 UTCJul 4, 04:45 UTC18h 45m
2026-07-03 CSN3081 - Jul 3, 06:30 UTCJul 3, 07:30 UTC1h 0m
2026-07-01 CSN668 - Jul 1, 09:10 UTCJul 1, 11:50 UTC2h 40m
2026-07-01 CSN667 - Jul 1, 02:25 UTCJul 1, 05:25 UTC3h 0m
2026-06-30 CSN667 - Jun 30, 04:40 UTCJul 1, 03:15 UTC22h 35m
2026-06-30 CSN3049 - Jun 30, 01:45 UTCJun 30, 02:50 UTC1h 5m
2026-06-29 CSN320 - Jun 29, 22:35 UTCJun 29, 22:55 UTC20m
2026-06-29 CSN320 - Jun 29, 15:49 UTCJun 29, 20:49 UTC5h 0m
2026-06-29 CSN319 - Jun 29, 06:44 UTCJun 29, 13:59 UTC7h 15m
2026-06-28 CSN668 - Jun 28, 08:59 UTCJun 28, 11:39 UTC2h 40m
2026-06-27 CSN667 - Jun 27, 23:39 UTCJun 28, 05:55 UTC6h 15m
2026-06-26 CSN678 CGO → CAN Jun 26, 13:40 UTCJun 26, 19:45 UTC6h 5m
2026-06-25 CSN677 CGO → LUX Jun 25, 10:15 UTCJun 25, 16:39 UTC6h 25m
2026-06-24 CSN354 - Jun 24, 08:45 UTCJun 24, 09:05 UTC20m
2026-06-24 CSN354 - Jun 24, 05:54 UTCJun 24, 06:20 UTC25m
2026-06-24 CSN353 - Jun 24, 01:09 UTCJun 24, 04:00 UTC2h 50m
2026-06-23 CSN650 - Jun 23, 11:04 UTCJun 23, 14:10 UTC3h 5m
2026-06-22 CSN649 - Jun 22, 21:40 UTCJun 23, 03:34 UTC5h 55m
2026-06-22 CSN664 - Jun 22, 09:04 UTCJun 22, 09:24 UTC20m
2026-06-22 CSN664 - Jun 22, 01:10 UTCJun 22, 08:19 UTC7h 10m
2026-06-21 CSN663 - Jun 21, 14:50 UTCJun 21, 22:34 UTC7h 45m
2026-06-20 CSN304 - Jun 20, 21:10 UTCJun 21, 03:25 UTC6h 15m
2026-06-20 CSN303 - Jun 20, 10:59 UTCJun 20, 17:49 UTC6h 50m
2026-06-19 CSN303 - Jun 19, 19:49 UTCJun 20, 17:49 UTC22h 0m
2026-06-19 CSN6044 - Jun 19, 17:55 UTCJun 20, 14:35 UTC20h 40m
2026-06-18 CSN6043 - Jun 18, 03:20 UTCJun 18, 22:25 UTC19h 5m
2026-06-18 CSN6043 - Jun 18, 02:50 UTCJun 18, 22:25 UTC19h 35m
2026-06-17 CSN6043 - Jun 17, 23:20 UTCJun 18, 22:25 UTC23h 5m
2026-06-17 CSN304 - Jun 17, 21:20 UTCJun 18, 20:45 UTC23h 25m
2026-06-17 CSN304 - Jun 17, 21:10 UTCJun 18, 03:30 UTC6h 20m
2026-06-17 CSN303 - Jun 17, 11:40 UTCJun 17, 18:40 UTC7h 0m
2026-06-16 CSN303 - Jun 16, 17:55 UTCJun 17, 17:15 UTC23h 21m
2026-06-16 CSN332 FRA → CAN Jun 16, 13:19 UTCJun 17, 12:25 UTC23h 6m

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-20EH page for operator, model, and routing details .

Mode-S 781915 frequently asked

What is Mode-S code 781915?
781915 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20EH.
Where is Mode-S 781915 registered?
Mode-S code 781915 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781915 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781915, octal 36014425, decimal 7,870,741.
What flights does 781915 operate?
Mode-S 781915 has broadcast 20 distinct callsigns, including CSN320, CSN6043, CSN354, CSN319, CSN664.