Apparatus

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sensors Mode-S transponder

781E30

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32AW · AIRBUS A-321neo

Hex
781E30
Octal
36017060
Decimal
7,872,048
Country
CN
Tail
B-32AW
Type
A21N
No current signal · last broadcast 6h ago
Flights observed
142
Distinct callsigns
17
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 781E30.

Country allocation

The ICAO 24-bit address 781E30 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 17 distinct

Callsign Airline Flights Last seen
CSC3961 - 28 2026-07-11
CSC3962 - 27 2026-07-12
CSC3909 - 11 2026-07-13
CSC3996 - 9 2026-07-13
CSC3995 - 9 2026-07-13
CSC3993 Sichuan Airlines 9 2026-05-18
CSC3910 - 8 2026-07-14
CSC3937 - 7 2026-07-13
CSC3923 - 7 2026-07-04
CSC6788 - 6 2026-07-17
CSC3994 Sichuan Airlines 6 2026-05-18
CSC3986 - 5 2026-07-05
CSC3924 - 4 2026-06-18
CSC3985 - 2 2026-07-17
CSC3938 - 2 2026-07-12
CSC6717 - 1 2026-07-01
CSC3959 Sichuan Airlines 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSC3985 - Jul 17, 09:40 UTCJul 17, 20:25 UTC10h 45m
2026-07-17 CSC6788 - Jul 17, 04:39 UTCJul 17, 04:49 UTC10m
2026-07-16 CSC6788 - Jul 16, 04:35 UTCJul 16, 04:45 UTC10m
2026-07-14 CSC3910 - Jul 14, 09:20 UTCJul 14, 12:30 UTC3h 10m
2026-07-13 CSC3909 - Jul 13, 18:10 UTCJul 14, 07:10 UTC13h 0m
2026-07-13 CSC3937 - Jul 13, 09:05 UTCJul 13, 16:45 UTC7h 40m
2026-07-13 CSC3996 - Jul 13, 07:35 UTCJul 13, 07:50 UTC15m
2026-07-13 CSC3995 - Jul 13, 05:35 UTCJul 13, 06:01 UTC25m
2026-07-12 CSC3995 - Jul 12, 19:30 UTCJul 13, 04:45 UTC9h 15m
2026-07-12 CSC3938 - Jul 12, 18:15 UTCJul 12, 18:30 UTC15m
2026-07-12 CSC3962 - Jul 12, 07:50 UTCJul 12, 16:50 UTC9h 0m
2026-07-11 CSC3961 - Jul 11, 18:10 UTCJul 12, 06:20 UTC12h 10m
2026-07-11 CSC3962 - Jul 11, 08:01 UTCJul 11, 16:00 UTC8h 0m
2026-07-10 CSC3961 - Jul 10, 18:25 UTCJul 11, 06:25 UTC12h 0m
2026-07-10 CSC3962 - Jul 10, 07:55 UTCJul 10, 16:45 UTC8h 50m
2026-07-09 CSC3961 - Jul 9, 18:35 UTCJul 10, 06:15 UTC11h 40m
2026-07-09 CSC3937 - Jul 9, 15:30 UTCJul 9, 16:55 UTC1h 25m
2026-07-08 CSC3962 - Jul 8, 08:00 UTCJul 8, 09:40 UTC1h 40m
2026-07-07 CSC3961 BKK → NRT Jul 7, 18:25 UTCJul 8, 06:30 UTC12h 5m
2026-07-07 CSC3962 - Jul 7, 07:45 UTCJul 7, 16:50 UTC9h 5m
2026-07-06 CSC3961 - Jul 6, 19:50 UTCJul 7, 06:10 UTC10h 20m
2026-07-06 CSC3961 - Jul 6, 09:00 UTCJul 7, 06:10 UTC21h 10m
2026-07-05 CSC3986 - Jul 5, 20:05 UTCJul 6, 20:00 UTC23h 55m
2026-07-05 CSC3986 - Jul 5, 19:50 UTCJul 6, 09:20 UTC13h 30m
2026-07-05 CSC3986 - Jul 5, 09:20 UTCJul 5, 20:15 UTC10h 55m
2026-07-05 CSC6788 - Jul 5, 04:30 UTCJul 5, 04:40 UTC10m
2026-07-04 CSC3923 - Jul 4, 10:00 UTCJul 4, 20:30 UTC10h 30m
2026-07-04 CSC6788 - Jul 4, 04:20 UTCJul 4, 04:35 UTC15m
2026-07-03 CSC3985 - Jul 3, 09:20 UTCJul 3, 20:35 UTC11h 15m
2026-07-01 CSC6717 - Jul 1, 01:40 UTCJul 1, 01:55 UTC15m
2026-06-23 CSC3962 - Jun 23, 07:45 UTCJun 23, 09:34 UTC1h 50m
2026-06-22 CSC3961 - Jun 22, 09:19 UTCJun 23, 05:45 UTC20h 25m
2026-06-21 CSC3909 - Jun 21, 18:20 UTCJun 22, 06:49 UTC12h 30m
2026-06-21 CSC3962 - Jun 21, 07:45 UTCJun 21, 17:10 UTC9h 25m
2026-06-20 CSC3961 - Jun 20, 10:29 UTCJun 21, 05:54 UTC19h 25m
2026-06-20 CSC3961 - Jun 20, 09:09 UTCJun 21, 05:54 UTC20h 45m
2026-06-19 CSC3909 - Jun 19, 18:09 UTCJun 20, 06:54 UTC12h 45m
2026-06-19 CSC3962 - Jun 19, 07:54 UTCJun 19, 16:59 UTC9h 5m
2026-06-18 CSC3924 - Jun 18, 10:55 UTCJun 19, 05:49 UTC18h 54m
2026-06-17 CSC3923 - Jun 17, 18:15 UTCJun 18, 17:25 UTC23h 10m
2026-06-17 CSC3962 - Jun 17, 07:55 UTCJun 17, 16:40 UTC8h 45m
2026-06-16 CSC3961 BKK → NRT Jun 16, 18:29 UTCJun 17, 05:50 UTC11h 21m
2026-06-16 CSC3962 - Jun 16, 07:45 UTCJun 16, 17:00 UTC9h 15m
2026-06-15 CSC3961 - Jun 15, 10:45 UTCJun 16, 05:50 UTC19h 5m
2026-06-15 CSC3961 - Jun 15, 09:20 UTCJun 16, 05:50 UTC20h 30m
2026-06-14 CSC3909 - Jun 14, 18:35 UTCJun 15, 07:00 UTC12h 25m
2026-06-14 CSC3962 - Jun 14, 07:55 UTCJun 14, 17:10 UTC9h 15m
2026-06-13 CSC3961 - Jun 13, 18:15 UTCJun 14, 05:40 UTC11h 26m
2026-06-13 CSC3937 TFU → BKK Jun 13, 16:45 UTCJun 13, 17:05 UTC20m
2026-06-13 CSC3962 NRT → TFU Jun 13, 07:55 UTCJun 13, 09:45 UTC1h 50m

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

Mode-S 781E30 frequently asked

What is Mode-S code 781E30?
781E30 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32AW.
Where is Mode-S 781E30 registered?
Mode-S code 781E30 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E30 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E30, octal 36017060, decimal 7,872,048.
What flights does 781E30 operate?
Mode-S 781E30 has broadcast 17 distinct callsigns, including CSC3961, CSC3962, CSC3909, CSC3996, CSC3995.