Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781934

ICAO 24-bit transponder address · allocated to China

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

Hex
781934
Octal
36014464
Decimal
7,870,772
Country
CN
Tail
B-20EL
Type
B789
No current signal · last broadcast Jul 26, 05:00 UTC
Flights observed
148
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 05:00 UTC

Last known position

Most recent position reported by Mode-S 781934.

Country allocation

The ICAO 24-bit address 781934 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
CSN8065 China Southern Airlines 21 2026-07-22
CSN8066 - 11 2026-07-22
CSN680 - 11 2026-06-16
CSN653 - 11 2026-07-04
CSN337 China Southern Airlines 9 2026-07-21
CSN679 - 8 2026-06-16
CSN654 - 8 2026-07-05
CSN338 China Southern Airlines 6 2026-07-20
CSN8172 China Southern Airlines 5 2026-06-21
CSN633 China Southern Airlines 4 2026-04-17
CSN391 - 4 2026-07-03
CSN8171 - 3 2026-06-20
CSN690 China Southern Airlines 3 2026-06-01
CSN634 China Southern Airlines 3 2026-04-18
CSN689 China Southern Airlines 2 2026-05-31
CSN6036 China Southern Airlines 2 2026-07-26
CSN6035 China Southern Airlines 2 2026-07-26
CSN392 China Southern Airlines 2 2026-04-21
CSN336 - 2 2026-07-11
CSN335 - 2 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6036 IST → URC Jul 26, 03:15 UTCJul 26, 05:00 UTC1h 45m
2026-07-26 CSN6035 URC → IST Jul 26, 01:00 UTCJul 26, 01:15 UTC15m
2026-07-22 CSN8066 - Jul 22, 11:40 UTCJul 22, 13:25 UTC1h 45m
2026-07-22 CSN8065 CAN → IST Jul 22, 03:25 UTCJul 22, 03:45 UTC20m
2026-07-21 CSN8065 CAN → IST Jul 21, 07:35 UTCJul 22, 02:45 UTC19h 10m
2026-07-21 CSN337 CAN → ICN Jul 21, 05:15 UTCJul 21, 06:00 UTC45m
2026-07-20 CSN338 ICN → CAN Jul 20, 06:30 UTCJul 20, 07:10 UTC40m
2026-07-20 CSN337 CAN → ICN Jul 20, 04:00 UTCJul 20, 04:35 UTC35m
2026-07-20 CSN337 CAN → ICN Jul 20, 01:45 UTCJul 20, 01:55 UTC10m
2026-07-19 CSN8066 - Jul 19, 11:40 UTCJul 19, 13:35 UTC1h 55m
2026-07-19 CSN8065 CAN → IST Jul 19, 03:45 UTCJul 19, 04:05 UTC20m
2026-07-19 CSN8065 CAN → IST Jul 19, 01:55 UTCJul 19, 03:10 UTC1h 15m
2026-07-18 CSN8065 CAN → IST Jul 18, 07:05 UTCJul 19, 03:10 UTC20h 5m
2026-07-18 CSN8065 CAN → IST Jul 18, 06:25 UTCJul 19, 03:10 UTC20h 45m
2026-07-18 CSN337 CAN → ICN Jul 18, 04:00 UTCJul 18, 04:35 UTC35m
2026-07-17 CSN320 PER → CAN Jul 17, 22:25 UTCJul 17, 22:49 UTC25m
2026-07-17 CSN320 PER → CAN Jul 17, 15:35 UTCJul 17, 20:50 UTC5h 15m
2026-07-17 CSN319 CAN → PER Jul 17, 06:20 UTCJul 17, 13:29 UTC7h 10m
2026-07-16 CSN8066 - Jul 16, 12:40 UTCJul 16, 17:00 UTC4h 20m
2026-07-16 CSN8065 - Jul 16, 01:35 UTCJul 16, 02:55 UTC1h 20m
2026-07-15 CSN8065 - Jul 15, 03:20 UTCJul 16, 02:55 UTC23h 35m
2026-07-14 CSN304 - Jul 14, 21:25 UTCJul 15, 04:00 UTC6h 34m
2026-07-14 CSN303 - Jul 14, 10:50 UTCJul 14, 17:40 UTC6h 50m
2026-07-12 CSN8066 - Jul 12, 11:40 UTCJul 12, 16:20 UTC4h 40m
2026-07-12 CSN8065 - Jul 12, 03:15 UTCJul 12, 03:35 UTC20m
2026-07-12 CSN8065 - Jul 12, 01:15 UTCJul 12, 02:35 UTC1h 20m
2026-07-11 CSN336 - Jul 11, 08:10 UTCJul 11, 08:35 UTC25m
2026-07-10 CSN336 - Jul 10, 21:25 UTCJul 11, 07:30 UTC10h 5m
2026-07-10 CSN335 - Jul 10, 17:50 UTCJul 10, 18:05 UTC15m
2026-07-10 CSN335 - Jul 10, 08:15 UTCJul 10, 15:55 UTC7h 40m
2026-07-10 CSN3533 - Jul 10, 00:20 UTCJul 10, 00:30 UTC10m
2026-07-09 CSN3830 - Jul 9, 15:35 UTCJul 9, 16:10 UTC35m
2026-07-07 CSN350 - Jul 7, 06:15 UTCJul 7, 06:30 UTC15m
2026-07-07 CSN349 - Jul 7, 03:50 UTCJul 7, 04:30 UTC40m
2026-07-06 CSN8066 - Jul 6, 11:35 UTCJul 6, 13:20 UTC1h 45m
2026-07-06 CSN8065 - Jul 6, 03:25 UTCJul 6, 03:50 UTC25m
2026-07-05 CSN8065 - Jul 5, 22:25 UTCJul 6, 02:45 UTC4h 20m
2026-07-05 CSN654 - Jul 5, 02:10 UTCJul 5, 22:30 UTC20h 20m
2026-07-04 CSN654 - Jul 4, 23:05 UTCJul 5, 22:30 UTC23h 25m
2026-07-04 CSN654 - Jul 4, 20:40 UTCJul 5, 02:55 UTC6h 15m
2026-07-04 CSN653 - Jul 4, 10:55 UTCJul 4, 17:55 UTC7h 0m
2026-07-03 CSN653 - Jul 3, 17:45 UTCJul 4, 17:00 UTC23h 15m
2026-07-03 CSN391 - Jul 3, 13:05 UTCJul 3, 16:05 UTC3h 0m
2026-07-03 CSN338 - Jul 3, 06:30 UTCJul 3, 07:15 UTC45m
2026-07-03 CSN337 - Jul 3, 04:10 UTCJul 3, 04:50 UTC40m
2026-07-02 CSN8066 - Jul 2, 11:35 UTCJul 2, 13:25 UTC1h 50m
2026-07-02 CSN8065 - Jul 2, 03:10 UTCJul 2, 03:30 UTC20m
2026-07-02 CSN8065 - Jul 2, 01:15 UTCJul 2, 02:30 UTC1h 15m
2026-07-01 CSN338 - Jul 1, 09:20 UTCJul 1, 09:30 UTC10m
2026-07-01 CSN338 - Jul 1, 06:35 UTCJul 1, 07:20 UTC45m

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

Mode-S 781934 frequently asked

What is Mode-S code 781934?
781934 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20EL.
Where is Mode-S 781934 registered?
Mode-S code 781934 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781934 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 05:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781934, octal 36014464, decimal 7,870,772.
What flights does 781934 operate?
Mode-S 781934 has broadcast 20 distinct callsigns, including CSN8065, CSN8066, CSN680, CSN653, CSN337.