Apparatus

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sensors Mode-S transponder

781C07

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-324Y · AIRBUS A-321neo

Hex
781C07
Octal
36016007
Decimal
7,871,495
Country
CN
Tail
B-324Y
Type
A21N
No current signal · last broadcast 4h ago
Flights observed
57
Distinct callsigns
15
Country
CN
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 781C07.

Country allocation

The ICAO 24-bit address 781C07 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
CQH6566 Spring Airlines 7 2026-05-23
CQH8776 Spring Airlines 6 2026-05-28
CQH8882 Spring Airlines 5 2026-05-27
CQH6575 Spring Airlines 5 2026-05-30
CQH6565 Spring Airlines 5 2026-04-22
CQH8956 Spring Airlines 4 2026-05-28
CQH8955 Spring Airlines 4 2026-05-28
CQH8881 Spring Airlines 4 2026-05-27
CQH8775 Spring Airlines 4 2026-05-16
CQH8950 Spring Airlines 3 2026-05-09
CQH6582 Spring Airlines 3 2026-05-30
CQH6576 Spring Airlines 3 2026-05-30
CQH8918 Spring Airlines 2 2026-05-08
CQH8949 Spring Airlines 1 2026-04-27
CQH6581 Spring Airlines 1 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CQH6582 KIX → PVG May 30, 10:40 UTCMay 30, 11:25 UTC45m
2026-05-30 CQH6576 KIX → PVG May 30, 03:30 UTCMay 30, 09:30 UTC6h 0m
2026-05-30 CQH6575 PVG → KIX May 30, 01:20 UTCMay 30, 02:06 UTC46m
2026-05-29 CQH6575 PVG → KIX May 29, 07:10 UTCMay 30, 02:06 UTC18h 56m
2026-05-28 CQH8956 SZX → SHA May 28, 23:50 UTCMay 29, 00:00 UTC10m
2026-05-28 CQH8955 SHA → SZX May 28, 15:35 UTCMay 28, 15:50 UTC15m
2026-05-28 CQH8776 SZX → SHA May 28, 10:20 UTCMay 28, 10:30 UTC10m
2026-05-27 CQH8882 SZX → SHA May 27, 07:25 UTCMay 28, 04:20 UTC20h 55m
2026-05-27 CQH8882 SZX → SHA May 27, 06:25 UTCMay 27, 06:34 UTC10m
2026-05-27 CQH8881 SHA → SZX May 27, 04:39 UTCMay 27, 04:49 UTC10m
2026-05-26 CQH8956 SZX → SHA May 26, 23:29 UTCMay 26, 23:39 UTC10m
2026-05-26 CQH8955 SHA → SZX May 26, 17:39 UTCMay 26, 17:55 UTC15m
2026-05-23 CQH6566 KIX → PVG May 23, 05:55 UTCMay 23, 23:10 UTC17h 15m
2026-05-22 CQH6582 KIX → PVG May 22, 10:40 UTCMay 23, 04:30 UTC17h 49m
2026-05-22 CQH6576 KIX → PVG May 22, 03:25 UTCMay 22, 09:15 UTC5h 50m
2026-05-22 CQH6575 PVG → KIX May 22, 01:15 UTCMay 22, 02:00 UTC45m
2026-05-19 CQH6582 KIX → PVG May 19, 10:40 UTCMay 19, 11:25 UTC45m
2026-05-19 CQH6581 PVG → KIX May 19, 03:30 UTCMay 19, 09:30 UTC6h 0m
2026-05-18 CQH6575 PVG → KIX May 18, 10:45 UTCMay 19, 02:05 UTC15h 19m
2026-05-18 CQH6576 KIX → PVG May 18, 03:25 UTCMay 18, 09:25 UTC6h 0m
2026-05-18 CQH6575 PVG → KIX May 18, 01:20 UTCMay 18, 02:10 UTC50m
2026-05-16 CQH8776 SZX → SHA May 16, 11:01 UTCMay 16, 11:11 UTC10m
2026-05-16 CQH8775 SHA → SZX May 16, 09:10 UTCMay 16, 09:21 UTC10m
2026-05-15 CQH8882 SZX → SHA May 15, 06:50 UTCMay 15, 07:00 UTC10m
2026-05-15 CQH8881 SHA → SZX May 15, 04:50 UTCMay 15, 05:00 UTC10m
2026-05-14 CQH8956 SZX → SHA May 14, 23:30 UTCMay 14, 23:40 UTC10m
2026-05-14 CQH8955 SHA → SZX May 14, 17:40 UTCMay 14, 18:00 UTC20m
2026-05-14 CQH8776 SZX → SHA May 14, 13:15 UTCMay 14, 13:25 UTC10m
2026-05-14 CQH8775 SHA → SZX May 14, 11:45 UTCMay 14, 11:55 UTC10m
2026-05-12 CQH8776 SZX → SHA May 12, 10:05 UTCMay 12, 10:15 UTC10m
2026-05-12 CQH8775 SHA → SZX May 12, 08:15 UTCMay 12, 08:25 UTC10m
2026-05-09 CQH8950 SZX → SHA May 9, 13:10 UTCMay 9, 13:20 UTC10m
2026-05-08 CQH8918 SZX → SHA May 8, 02:35 UTCMay 8, 02:44 UTC10m
2026-05-06 CQH8776 SZX → SHA May 6, 10:10 UTCMay 6, 10:25 UTC15m
2026-04-27 CQH8950 SZX → SHA Apr 27, 14:10 UTCApr 27, 14:20 UTC10m
2026-04-27 CQH8949 SHA → SZX Apr 27, 11:15 UTCApr 27, 11:25 UTC10m
2026-04-25 CQH8918 SZX → SHA Apr 25, 02:25 UTCApr 25, 02:35 UTC10m
2026-04-24 CQH8776 SZX → SHA Apr 24, 13:20 UTCApr 24, 13:30 UTC10m
2026-04-24 CQH8775 SHA → SZX Apr 24, 11:45 UTCApr 24, 12:05 UTC20m
2026-04-22 CQH6566 KIX → PVG Apr 22, 06:10 UTCApr 22, 10:30 UTC4h 20m
2026-04-22 CQH6565 PVG → KIX Apr 22, 03:50 UTCApr 22, 04:15 UTC25m
2026-04-21 CQH6566 KIX → PVG Apr 21, 06:45 UTCApr 21, 06:55 UTC10m
2026-04-21 CQH6566 KIX → PVG Apr 21, 06:10 UTCApr 21, 06:35 UTC25m
2026-04-21 CQH6565 PVG → KIX Apr 21, 03:45 UTCApr 21, 04:05 UTC20m
2026-04-20 CQH6566 KIX → PVG Apr 20, 06:05 UTCApr 21, 04:05 UTC22h 0m
2026-04-20 CQH6565 PVG → KIX Apr 20, 03:45 UTCApr 20, 04:10 UTC25m
2026-04-19 CQH6566 KIX → PVG Apr 19, 06:15 UTCApr 20, 04:10 UTC21h 55m
2026-04-19 CQH6565 PVG → KIX Apr 19, 04:05 UTCApr 19, 04:50 UTC45m
2026-04-18 CQH6566 KIX → PVG Apr 18, 06:15 UTCApr 19, 04:50 UTC22h 35m
2026-04-18 CQH6565 PVG → KIX Apr 18, 04:15 UTCApr 18, 04:40 UTC25m

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-324Y page for operator, model, and routing details .

Mode-S 781C07 frequently asked

What is Mode-S code 781C07?
781C07 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-324Y.
Where is Mode-S 781C07 registered?
Mode-S code 781C07 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781C07 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781C07, octal 36016007, decimal 7,871,495.
What flights does 781C07 operate?
Mode-S 781C07 has broadcast 15 distinct callsigns, including CQH6566, CQH8776, CQH8882, CQH6575, CQH6565.