Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781B38

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-322P · AIRBUS A-321neo

Hex
781B38
Octal
36015470
Decimal
7,871,288
Country
CN
Tail
B-322P
Type
A21N
No current signal · last broadcast 1d ago
Flights observed
68
Distinct callsigns
16
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781B38.

Country allocation

The ICAO 24-bit address 781B38 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 16 distinct

Callsign Airline Flights Last seen
CQH8776 Spring Airlines 8 2026-05-26
CQH8956 Spring Airlines 7 2026-05-24
CQH8882 Spring Airlines 7 2026-05-25
CQH8881 Spring Airlines 7 2026-05-25
CQH8955 Spring Airlines 6 2026-05-24
CQH8918 Spring Airlines 6 2026-05-28
CQH8950 Spring Airlines 4 2026-05-27
CQH8949 Spring Airlines 4 2026-05-27
CQH8917 Spring Airlines 4 2026-05-28
CQH8775 Spring Airlines 3 2026-05-26
CQH8930 Spring Airlines 2 2026-06-01
CQH8836 Spring Airlines 2 2026-05-21
CQH6223 - 2 2026-05-08
CQH6720 Spring Airlines 1 2026-04-21
CQH6566 Spring Airlines 1 2026-05-30
CQH6565 Spring Airlines 1 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 CQH8930 CAN → SHA Jun 1, 23:45 UTCJun 2, 00:10 UTC25m
2026-05-30 CQH6566 KIX → PVG May 30, 06:05 UTCMay 30, 10:30 UTC4h 25m
2026-05-30 CQH6565 PVG → KIX May 30, 04:05 UTCMay 30, 04:45 UTC40m
2026-05-28 CQH8918 SZX → SHA May 28, 02:25 UTCMay 28, 02:35 UTC10m
2026-05-28 CQH8917 SHA → SZX May 28, 00:20 UTCMay 28, 00:40 UTC20m
2026-05-27 CQH8950 SZX → SHA May 27, 13:35 UTCMay 27, 13:45 UTC10m
2026-05-27 CQH8949 SHA → SZX May 27, 11:45 UTCMay 27, 12:00 UTC15m
2026-05-26 CQH8776 SZX → SHA May 26, 11:50 UTCMay 26, 12:05 UTC15m
2026-05-26 CQH8775 SHA → SZX May 26, 09:59 UTCMay 26, 10:20 UTC20m
2026-05-25 CQH8950 SZX → SHA May 25, 13:35 UTCMay 25, 13:45 UTC10m
2026-05-25 CQH8882 SZX → SHA May 25, 07:00 UTCMay 25, 07:15 UTC15m
2026-05-25 CQH8881 SHA → SZX May 25, 04:10 UTCMay 25, 04:55 UTC45m
2026-05-24 CQH8956 SZX → SHA May 24, 23:30 UTCMay 24, 23:46 UTC16m
2026-05-24 CQH8955 SHA → SZX May 24, 17:15 UTCMay 24, 17:35 UTC20m
2026-05-21 CQH8776 SZX → SHA May 21, 13:45 UTCMay 21, 13:55 UTC10m
2026-05-21 CQH8836 CAN → SHA May 21, 03:15 UTCMay 21, 03:25 UTC10m
2026-05-20 CQH8882 SZX → SHA May 20, 06:35 UTCMay 20, 06:45 UTC10m
2026-05-20 CQH8881 SHA → SZX May 20, 04:45 UTCMay 20, 05:00 UTC15m
2026-05-19 CQH8956 SZX → SHA May 19, 23:45 UTCMay 19, 23:55 UTC10m
2026-05-19 CQH8955 SHA → SZX May 19, 17:50 UTCMay 19, 18:20 UTC30m
2026-05-18 CQH8949 SHA → SZX May 18, 11:00 UTCMay 18, 12:00 UTC1h 0m
2026-05-17 CQH8918 SZX → SHA May 17, 02:25 UTCMay 17, 03:30 UTC1h 5m
2026-05-17 CQH8917 SHA → SZX May 17, 00:25 UTCMay 17, 00:35 UTC10m
2026-05-16 CQH8882 SZX → SHA May 16, 06:31 UTCMay 16, 06:41 UTC10m
2026-05-16 CQH8881 SHA → SZX May 16, 03:50 UTCMay 16, 05:00 UTC1h 10m
2026-05-15 CQH8956 SZX → SHA May 15, 23:35 UTCMay 15, 23:45 UTC10m
2026-05-15 CQH8955 SHA → SZX May 15, 18:20 UTCMay 15, 18:35 UTC15m
2026-05-15 CQH8776 SZX → SHA May 15, 13:00 UTCMay 15, 13:10 UTC10m
2026-05-15 CQH8836 CAN → SHA May 15, 04:10 UTCMay 15, 11:20 UTC7h 10m
2026-05-15 - - May 15, 01:10 UTCMay 15, 01:20 UTC10m
2026-05-14 CQH8882 SZX → SHA May 14, 07:40 UTCMay 14, 09:00 UTC1h 20m
2026-05-14 CQH8881 SHA → SZX May 14, 06:00 UTCMay 14, 06:15 UTC15m
2026-05-13 CQH8956 SZX → SHA May 13, 23:30 UTCMay 13, 23:40 UTC10m
2026-05-13 CQH8955 SHA → SZX May 13, 16:25 UTCMay 13, 16:45 UTC20m
2026-05-13 CQH8776 SZX → SHA May 13, 10:40 UTCMay 13, 10:50 UTC10m
2026-05-11 CQH8918 SZX → SHA May 11, 02:30 UTCMay 11, 02:40 UTC10m
2026-05-11 CQH8917 SHA → SZX May 11, 00:25 UTCMay 11, 00:40 UTC15m
2026-05-10 CQH8950 SZX → SHA May 10, 12:59 UTCMay 10, 13:10 UTC10m
2026-05-10 - - May 10, 11:20 UTCMay 10, 11:30 UTC10m
2026-05-09 CQH8918 SZX → SHA May 9, 02:45 UTCMay 9, 03:00 UTC15m
2026-05-08 CQH6223 - May 8, 09:59 UTCMay 8, 10:14 UTC15m
2026-05-07 CQH8776 SZX → SHA May 7, 10:00 UTCMay 7, 10:10 UTC10m
2026-05-06 CQH6223 - May 6, 09:55 UTCMay 6, 10:25 UTC30m
2026-05-05 CQH8776 SZX → SHA May 5, 10:05 UTCMay 5, 10:15 UTC10m
2026-05-03 - - May 3, 15:50 UTCMay 3, 16:00 UTC10m
2026-05-01 CQH8776 SZX → SHA May 1, 10:10 UTCMay 1, 10:20 UTC10m
2026-05-01 CQH8775 SHA → SZX May 1, 08:00 UTCMay 1, 08:20 UTC20m
2026-04-27 CQH8930 CAN → SHA Apr 27, 23:15 UTCApr 28, 00:10 UTC55m
2026-04-27 CQH8776 SZX → SHA Apr 27, 10:10 UTCApr 27, 10:20 UTC10m
2026-04-27 CQH8775 SHA → SZX Apr 27, 08:40 UTCApr 27, 08:50 UTC10m

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-322P page for operator, model, and routing details .

Mode-S 781B38 frequently asked

What is Mode-S code 781B38?
781B38 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-322P.
Where is Mode-S 781B38 registered?
Mode-S code 781B38 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B38 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B38, octal 36015470, decimal 7,871,288.
What flights does 781B38 operate?
Mode-S 781B38 has broadcast 16 distinct callsigns, including CQH8776, CQH8956, CQH8882, CQH8881, CQH8955.