Apparatus

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sensors Mode-S transponder

781F76

ICAO 24-bit transponder address · allocated to China

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

Hex
781F76
Octal
36017566
Decimal
7,872,374
Country
CN
Tail
B-32EF
Type
A21N
No current signal · last broadcast 8h ago
Flights observed
87
Distinct callsigns
20
Country
CN
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 781F76.

Country allocation

The ICAO 24-bit address 781F76 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
CQH8775 - 8 2026-07-10
CQH8955 - 7 2026-07-13
CQH8918 - 6 2026-06-19
CQH8882 - 6 2026-07-14
CQH8881 - 6 2026-07-14
CQH8776 - 6 2026-06-19
CQH8956 - 5 2026-07-14
CQH6566 - 5 2026-07-12
CQH6565 - 5 2026-07-12
CQH8950 - 4 2026-07-02
CQH8949 - 4 2026-07-02
CQH8917 - 4 2026-06-19
CQH6582 Spring Airlines 3 2026-06-01
CQH6575 Spring Airlines 3 2026-06-01
CQH8836 Spring Airlines 2 2026-05-17
CQH7520 Spring Airlines 2 2026-04-19
CQH6581 Spring Airlines 2 2026-05-21
CQH6224 - 2 2026-06-17
CQH8929 Spring Airlines 1 2026-04-22
CQH8856 - 1 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CQH8882 - Jul 14, 08:05 UTCJul 14, 08:15 UTC10m
2026-07-14 CQH8881 - Jul 14, 06:20 UTCJul 14, 06:30 UTC10m
2026-07-14 CQH8956 - Jul 14, 01:10 UTCJul 14, 02:05 UTC55m
2026-07-13 CQH8955 - Jul 13, 17:40 UTCJul 13, 17:50 UTC10m
2026-07-12 CQH6566 - Jul 12, 12:01 UTCJul 12, 13:01 UTC1h 0m
2026-07-12 CQH6565 - Jul 12, 09:40 UTCJul 12, 10:45 UTC1h 5m
2026-07-10 CQH8775 - Jul 10, 08:10 UTCJul 10, 08:20 UTC10m
2026-07-09 CQH8882 - Jul 9, 06:45 UTCJul 9, 06:55 UTC10m
2026-07-08 CQH8856 - Jul 8, 11:30 UTCJul 9, 05:20 UTC17h 50m
2026-07-02 CQH8950 - Jul 2, 14:40 UTCJul 2, 14:50 UTC10m
2026-07-02 CQH8949 - Jul 2, 12:40 UTCJul 2, 13:00 UTC20m
2026-06-27 CQH8950 - Jun 27, 15:24 UTCJun 27, 15:34 UTC10m
2026-06-27 CQH8949 - Jun 27, 13:24 UTCJun 27, 13:35 UTC10m
2026-06-22 CQH8881 - Jun 22, 04:30 UTCJun 22, 04:54 UTC25m
2026-06-21 CQH8956 SZX → SHA Jun 21, 23:40 UTCJun 21, 23:50 UTC10m
2026-06-21 CQH8955 - Jun 21, 15:44 UTCJun 21, 15:54 UTC10m
2026-06-20 CQH8950 - Jun 20, 13:24 UTCJun 20, 13:34 UTC10m
2026-06-20 CQH8949 - Jun 20, 11:44 UTCJun 20, 11:54 UTC10m
2026-06-19 CQH8776 - Jun 19, 12:04 UTCJun 19, 12:14 UTC10m
2026-06-19 CQH8775 - Jun 19, 10:09 UTCJun 19, 10:39 UTC30m
2026-06-19 CQH8918 - Jun 19, 04:50 UTCJun 19, 05:00 UTC10m
2026-06-19 CQH8917 - Jun 19, 00:45 UTCJun 19, 01:24 UTC40m
2026-06-18 CQH8776 - Jun 18, 15:30 UTCJun 18, 15:40 UTC10m
2026-06-18 CQH8775 - Jun 18, 13:35 UTCJun 18, 13:45 UTC10m
2026-06-18 CQH8917 - Jun 18, 00:25 UTCJun 18, 01:15 UTC50m
2026-06-17 CQH6224 - Jun 17, 05:50 UTCJun 17, 11:05 UTC5h 15m
2026-06-16 CQH8918 - Jun 16, 03:04 UTCJun 16, 03:15 UTC10m
2026-06-11 CQH8956 SZX → SHA Jun 11, 23:30 UTCJun 11, 23:45 UTC15m
2026-06-11 CQH8955 SHA → SZX Jun 11, 17:30 UTCJun 11, 17:50 UTC20m
2026-06-11 CQH8775 SHA → SZX Jun 11, 09:50 UTCJun 11, 10:05 UTC15m
2026-06-08 CQH6566 KIX → PVG Jun 8, 05:55 UTCJun 8, 13:15 UTC7h 20m
2026-06-08 CQH6565 PVG → KIX Jun 8, 03:50 UTCJun 8, 04:35 UTC45m
2026-06-01 CQH6582 KIX → PVG Jun 1, 10:40 UTCJun 1, 11:25 UTC45m
2026-06-01 CQH6576 KIX → PVG Jun 1, 03:20 UTCJun 1, 09:20 UTC6h 0m
2026-06-01 CQH6575 PVG → KIX Jun 1, 01:20 UTCJun 1, 02:10 UTC50m
2026-05-29 CQH8918 SZX → SHA May 29, 02:20 UTCMay 29, 02:35 UTC15m
2026-05-28 CQH8950 SZX → SHA May 28, 13:55 UTCMay 28, 14:05 UTC10m
2026-05-28 CQH8949 SHA → SZX May 28, 11:45 UTCMay 28, 12:05 UTC20m
2026-05-27 CQH8776 SZX → SHA May 27, 10:45 UTCMay 27, 10:55 UTC10m
2026-05-27 CQH8775 SHA → SZX May 27, 08:50 UTCMay 27, 09:05 UTC15m
2026-05-26 CQH8882 SZX → SHA May 26, 06:59 UTCMay 26, 07:10 UTC10m
2026-05-26 CQH8881 SHA → SZX May 26, 04:00 UTCMay 26, 04:45 UTC45m
2026-05-25 CQH8956 SZX → SHA May 25, 23:24 UTCMay 25, 23:40 UTC15m
2026-05-25 CQH8955 SHA → SZX May 25, 15:35 UTCMay 25, 15:50 UTC15m
2026-05-24 CQH8882 SZX → SHA May 24, 08:35 UTCMay 24, 08:50 UTC15m
2026-05-24 CQH8881 SHA → SZX May 24, 00:25 UTCMay 24, 05:25 UTC5h 0m
2026-05-23 CQH8955 SHA → SZX May 23, 17:35 UTCMay 23, 17:55 UTC20m
2026-05-23 CQH8775 SHA → SZX May 23, 10:35 UTCMay 23, 10:50 UTC15m
2026-05-22 CQH8776 SZX → SHA May 22, 13:15 UTCMay 22, 13:25 UTC10m
2026-05-21 CQH6582 KIX → PVG May 21, 10:45 UTCMay 21, 11:35 UTC50m

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

Mode-S 781F76 frequently asked

What is Mode-S code 781F76?
781F76 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32EF.
Where is Mode-S 781F76 registered?
Mode-S code 781F76 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F76 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781F76, octal 36017566, decimal 7,872,374.
What flights does 781F76 operate?
Mode-S 781F76 has broadcast 20 distinct callsigns, including CQH8775, CQH8955, CQH8918, CQH8882, CQH8881.