Apparatus

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sensors Mode-S transponder

781F5A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32E9 · AIRBUS A-321neo

Hex
781F5A
Octal
36017532
Decimal
7,872,346
Country
CN
Tail
B-32E9
Type
A21N
No current signal · last broadcast 3h ago
Flights observed
44
Distinct callsigns
19
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 781F5A.

Country allocation

The ICAO 24-bit address 781F5A 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 19 distinct

Callsign Airline Flights Last seen
CQH8955 Spring Airlines 4 2026-05-12
CQH8881 Spring Airlines 4 2026-05-13
CQH8956 Spring Airlines 3 2026-05-12
CQH8950 Spring Airlines 3 2026-05-31
CQH8949 Spring Airlines 3 2026-05-31
CQH8918 Spring Airlines 3 2026-06-07
CQH8882 Spring Airlines 3 2026-05-13
CQH8775 Spring Airlines 3 2026-06-05
CQH6566 Spring Airlines 3 2026-06-04
CQH6565 Spring Airlines 3 2026-06-04
CQH8917 Spring Airlines 2 2026-06-07
CQH8776 Spring Airlines 2 2026-05-29
CQH6576 Spring Airlines 2 2026-04-21
CQH8930 Spring Airlines 1 2026-05-23
CQH8835 Spring Airlines 1 2026-04-23
CQH7681 - 1 2026-05-24
CQH6720 Spring Airlines 1 2026-05-23
CQH6582 Spring Airlines 1 2026-04-20
CQH6575 Spring Airlines 1 2026-04-20

Recent flights last 44

DateFlightRouteTakeoffLandingDuration
2026-06-07 CQH8918 SZX → SHA Jun 7, 02:19 UTCJun 7, 02:30 UTC10m
2026-06-07 CQH8917 SHA → SZX Jun 7, 00:19 UTCJun 7, 00:39 UTC20m
2026-06-05 CQH8775 SHA → SZX Jun 5, 09:00 UTCJun 5, 09:30 UTC30m
2026-06-04 CQH6566 KIX → PVG Jun 4, 06:10 UTCJun 4, 07:00 UTC50m
2026-06-04 CQH6565 PVG → KIX Jun 4, 03:45 UTCJun 4, 04:35 UTC50m
2026-06-02 CQH8918 SZX → SHA Jun 2, 03:00 UTCJun 2, 03:45 UTC45m
2026-05-31 CQH8950 SZX → SHA May 31, 13:40 UTCMay 31, 13:50 UTC10m
2026-05-31 CQH8949 SHA → SZX May 31, 11:45 UTCMay 31, 12:05 UTC20m
2026-05-29 CQH8776 SZX → SHA May 29, 14:20 UTCMay 29, 14:35 UTC15m
2026-05-29 CQH8775 SHA → SZX May 29, 12:25 UTCMay 29, 12:50 UTC25m
2026-05-25 CQH6566 KIX → PVG May 25, 05:55 UTCMay 25, 06:40 UTC45m
2026-05-25 CQH6565 PVG → KIX May 25, 03:45 UTCMay 25, 04:35 UTC50m
2026-05-24 CQH7681 - May 24, 03:55 UTCMay 24, 04:05 UTC10m
2026-05-23 CQH8930 CAN → SHA May 23, 23:25 UTCMay 23, 23:35 UTC10m
2026-05-23 CQH6720 CAN → SHA May 23, 13:50 UTCMay 23, 14:00 UTC10m
2026-05-22 CQH6566 KIX → PVG May 22, 06:05 UTCMay 22, 13:20 UTC7h 15m
2026-05-22 CQH6565 PVG → KIX May 22, 03:50 UTCMay 22, 04:35 UTC45m
2026-05-13 CQH8882 SZX → SHA May 13, 06:40 UTCMay 13, 06:50 UTC10m
2026-05-13 CQH8881 SHA → SZX May 13, 04:35 UTCMay 13, 04:55 UTC20m
2026-05-12 CQH8956 SZX → SHA May 12, 23:25 UTCMay 12, 23:40 UTC15m
2026-05-12 CQH8955 SHA → SZX May 12, 15:30 UTCMay 12, 15:50 UTC20m
2026-05-11 CQH8950 SZX → SHA May 11, 13:15 UTCMay 11, 13:25 UTC10m
2026-05-11 CQH8949 SHA → SZX May 11, 11:20 UTCMay 11, 11:35 UTC15m
2026-05-10 CQH8776 SZX → SHA May 10, 10:19 UTCMay 10, 10:30 UTC10m
2026-05-10 CQH8775 SHA → SZX May 10, 08:25 UTCMay 10, 08:35 UTC10m
2026-05-03 CQH8882 SZX → SHA May 3, 06:50 UTCMay 3, 07:00 UTC10m
2026-05-03 CQH8881 SHA → SZX May 3, 04:35 UTCMay 3, 05:00 UTC25m
2026-05-02 CQH8956 SZX → SHA May 2, 23:25 UTCMay 2, 23:40 UTC15m
2026-05-02 CQH8955 SHA → SZX May 2, 15:45 UTCMay 2, 16:00 UTC15m
2026-04-28 CQH8918 SZX → SHA Apr 28, 02:30 UTCApr 28, 02:45 UTC15m
2026-04-28 CQH8917 SHA → SZX Apr 28, 00:35 UTCApr 28, 00:45 UTC10m
2026-04-27 CQH8882 SZX → SHA Apr 27, 08:55 UTCApr 27, 09:05 UTC10m
2026-04-27 CQH8881 SHA → SZX Apr 27, 04:55 UTCApr 27, 05:05 UTC10m
2026-04-26 CQH8956 SZX → SHA Apr 26, 23:20 UTCApr 26, 23:30 UTC10m
2026-04-26 CQH8955 SHA → SZX Apr 26, 15:30 UTCApr 26, 15:55 UTC25m
2026-04-25 CQH8950 SZX → SHA Apr 25, 14:00 UTCApr 25, 14:10 UTC10m
2026-04-25 CQH8949 SHA → SZX Apr 25, 11:15 UTCApr 25, 11:35 UTC20m
2026-04-25 CQH8881 SHA → SZX Apr 25, 04:50 UTCApr 25, 05:15 UTC25m
2026-04-24 CQH8955 SHA → SZX Apr 24, 18:50 UTCApr 24, 19:10 UTC20m
2026-04-23 CQH8835 SHA → CAN Apr 23, 01:25 UTCApr 23, 01:55 UTC30m
2026-04-21 CQH6576 KIX → PVG Apr 21, 04:05 UTCApr 21, 04:50 UTC45m
2026-04-20 CQH6582 KIX → PVG Apr 20, 10:45 UTCApr 21, 02:25 UTC15h 40m
2026-04-20 CQH6576 KIX → PVG Apr 20, 03:30 UTCApr 20, 09:00 UTC5h 30m
2026-04-20 CQH6575 PVG → KIX Apr 20, 01:15 UTCApr 20, 01:45 UTC30m

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-32E9 page for operator, model, and routing details .

Mode-S 781F5A frequently asked

What is Mode-S code 781F5A?
781F5A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32E9.
Where is Mode-S 781F5A registered?
Mode-S code 781F5A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F5A broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781F5A, octal 36017532, decimal 7,872,346.
What flights does 781F5A operate?
Mode-S 781F5A has broadcast 19 distinct callsigns, including CQH8955, CQH8881, CQH8956, CQH8950, CQH8949.