Apparatus

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sensors Mode-S transponder

781DF6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32AG · AIRBUS A-350-900

Hex
781DF6
Octal
36016766
Decimal
7,871,990
Country
CN
Tail
B-32AG
Type
A359
No current signal · last broadcast Jul 26, 16:10 UTC
Flights observed
174
Distinct callsigns
15
Country
CN
Last broadcast
Jul 26, 16:10 UTC

Last known position

Most recent position reported by Mode-S 781DF6.

Country allocation

The ICAO 24-bit address 781DF6 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 15 distinct

Callsign Airline Flights Last seen
CSC3838 Sichuan Airlines 30 2026-07-25
CSC3887 - 24 2026-07-19
CSC3837 Sichuan Airlines 20 2026-07-24
CSC3815 Sichuan Airlines 19 2026-07-26
CSC3896 - 14 2026-07-16
CSC3804 Sichuan Airlines 13 2026-07-22
CSC3895 - 10 2026-07-15
CSC3860 - 9 2026-07-14
CSC3803 - 8 2026-07-05
CSC8893 Sichuan Airlines 7 2026-07-21
CSC8894 Sichuan Airlines 6 2026-07-21
CSC3859 - 6 2026-07-14
CSC3816 Sichuan Airlines 5 2026-06-21
CSC6872 - 2 2026-07-07
3U3838 Sichuan Airlines 1 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSC3815 TFU → LED Jul 26, 13:15 UTCJul 26, 16:10 UTC2h 55m
2026-07-25 CSC3838 LAX → TFU Jul 25, 17:35 UTCJul 26, 16:10 UTC22h 36m
2026-07-25 CSC3838 LAX → TFU Jul 25, 16:45 UTCJul 26, 13:55 UTC21h 11m
2026-07-25 CSC3838 LAX → TFU Jul 25, 06:45 UTCJul 25, 19:00 UTC12h 15m
2026-07-24 CSC3837 TFU → LAX Jul 24, 17:05 UTCJul 25, 04:25 UTC11h 20m
2026-07-23 CSC3837 TFU → LAX Jul 23, 23:35 UTCJul 24, 18:55 UTC19h 20m
2026-07-23 CSC3837 TFU → LAX Jul 23, 23:20 UTCJul 24, 18:55 UTC19h 35m
2026-07-23 CSC3815 TFU → LED Jul 23, 13:00 UTCJul 23, 23:50 UTC10h 50m
2026-07-22 CSC3804 MAD → TFU Jul 22, 13:35 UTCJul 23, 13:30 UTC23h 55m
2026-07-21 CSC3804 MAD → TFU Jul 21, 23:40 UTCJul 22, 15:20 UTC15h 40m
2026-07-21 CSC3804 MAD → TFU Jul 21, 15:00 UTCJul 22, 13:30 UTC22h 30m
2026-07-21 CSC8893 CTU → PEK Jul 21, 10:45 UTCJul 21, 11:15 UTC30m
2026-07-21 CSC8894 PEK → CTU Jul 21, 04:05 UTCJul 21, 04:30 UTC25m
2026-07-19 CSC3887 - Jul 19, 12:50 UTCJul 19, 23:10 UTC10h 20m
2026-07-18 CSC3838 - Jul 18, 17:35 UTCJul 19, 13:15 UTC19h 40m
2026-07-18 CSC3838 - Jul 18, 16:15 UTCJul 19, 13:15 UTC21h 0m
2026-07-18 CSC3838 - Jul 18, 06:55 UTCJul 18, 18:10 UTC11h 15m
2026-07-17 CSC3837 TFU → LAX Jul 17, 17:05 UTCJul 18, 04:20 UTC11h 16m
2026-07-16 CSC3896 - Jul 16, 11:34 UTCJul 16, 14:55 UTC3h 20m
2026-07-15 CSC3895 - Jul 15, 12:55 UTCJul 16, 05:10 UTC16h 15m
2026-07-15 CSC8893 - Jul 15, 10:50 UTCJul 15, 11:05 UTC15m
2026-07-15 CSC8894 - Jul 15, 04:10 UTCJul 15, 04:30 UTC20m
2026-07-14 CSC3860 - Jul 14, 07:50 UTCJul 14, 18:30 UTC10h 40m
2026-07-14 CSC3859 - Jul 14, 00:55 UTCJul 14, 04:25 UTC3h 30m
2026-07-12 CSC3815 - Jul 12, 13:20 UTCJul 13, 00:20 UTC11h 0m
2026-07-11 CSC3838 - Jul 11, 17:35 UTCJul 12, 16:50 UTC23h 15m
2026-07-11 CSC3838 - Jul 11, 17:20 UTCJul 12, 13:50 UTC20h 30m
2026-07-11 CSC3838 - Jul 11, 07:30 UTCJul 11, 19:25 UTC11h 55m
2026-07-10 CSC3837 - Jul 10, 17:10 UTCJul 11, 04:40 UTC11h 31m
2026-07-09 CSC3896 - Jul 9, 11:35 UTCJul 9, 13:25 UTC1h 50m
2026-07-08 CSC3895 - Jul 8, 13:20 UTCJul 9, 04:45 UTC15h 25m
2026-07-08 CSC8893 - Jul 8, 11:40 UTCJul 8, 11:55 UTC15m
2026-07-08 CSC8894 - Jul 8, 04:00 UTCJul 8, 04:15 UTC15m
2026-07-07 CSC6872 - Jul 7, 14:50 UTCJul 7, 15:05 UTC15m
2026-07-07 CSC8893 - Jul 7, 12:00 UTCJul 7, 12:30 UTC30m
2026-07-07 CSC8894 - Jul 7, 04:10 UTCJul 7, 04:35 UTC25m
2026-07-06 CSC3804 - Jul 6, 09:40 UTCJul 6, 14:25 UTC4h 45m
2026-07-05 CSC3803 - Jul 5, 21:10 UTCJul 6, 04:50 UTC7h 40m
2026-07-03 CSC3860 - Jul 3, 17:35 UTCJul 4, 13:00 UTC19h 25m
2026-07-03 CSC3860 - Jul 3, 17:05 UTCJul 4, 13:00 UTC19h 55m
2026-07-03 CSC3860 - Jul 3, 07:35 UTCJul 3, 19:10 UTC11h 35m
2026-07-02 CSC3859 - Jul 2, 12:45 UTCJul 3, 04:50 UTC16h 5m
2026-07-02 CSC8893 - Jul 2, 10:45 UTCJul 2, 11:00 UTC15m
2026-07-01 CSC3896 - Jul 1, 11:30 UTCJul 1, 14:55 UTC3h 25m
2026-06-30 CSC3895 - Jun 30, 21:20 UTCJul 1, 04:40 UTC7h 20m
2026-06-28 CSC3896 - Jun 28, 11:55 UTCJun 28, 15:14 UTC3h 20m
2026-06-28 CSC3895 - Jun 28, 02:34 UTCJun 28, 04:50 UTC2h 15m
2026-06-25 CSC3887 - Jun 25, 23:19 UTCJun 26, 13:15 UTC13h 55m
2026-06-24 CSC3804 - Jun 24, 09:39 UTCJun 24, 15:05 UTC5h 25m
2026-06-23 CSC3803 - Jun 23, 21:10 UTCJun 24, 04:55 UTC7h 45m

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-32AG page for operator, model, and routing details .

Mode-S 781DF6 frequently asked

What is Mode-S code 781DF6?
781DF6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32AG.
Where is Mode-S 781DF6 registered?
Mode-S code 781DF6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781DF6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781DF6, octal 36016766, decimal 7,871,990.
What flights does 781DF6 operate?
Mode-S 781DF6 has broadcast 15 distinct callsigns, including CSC3838, CSC3887, CSC3837, CSC3815, CSC3896.