sensors Mode-S transponder

781CD5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-327J · AIRBUS A-320neo

Hex
781CD5
Octal
36016325
Decimal
7,871,701
Country
CN
Tail
B-327J
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
59
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781CD5.

Country allocation

The ICAO 24-bit address 781CD5 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
CQH8598 - 6 2026-07-16
CQH8597 - 4 2026-07-16
CQH7385 Spring Airlines 3 2026-05-18
CQH6524 - 3 2026-07-13
CQH8952 - 2 2026-06-16
CQH8951 - 2 2026-06-16
CQH8875 Spring Airlines 2 2026-05-01
CQH8522 Spring Airlines 2 2026-05-02
CQH8521 Spring Airlines 2 2026-05-02
CQH6411 - 2 2026-06-21
CQH8876 Spring Airlines 1 2026-05-01
CQH8779 - 1 2026-07-10
CQH8666 - 1 2026-07-11
CQH8665 - 1 2026-07-10
CQH8662 - 1 2026-06-24
CQH8661 - 1 2026-06-26
CQH8594 - 1 2026-07-12
CQH8593 - 1 2026-07-12
CQH8552 Spring Airlines 1 2026-05-21
CQH8551 Spring Airlines 1 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 CQH8598 - Jul 16, 08:55 UTCJul 16, 13:10 UTC4h 15m
2026-07-16 CQH8597 - Jul 16, 03:45 UTCJul 16, 07:20 UTC3h 35m
2026-07-13 CQH6524 - Jul 13, 15:50 UTCJul 13, 16:45 UTC55m
2026-07-13 CQH6524 - Jul 13, 12:35 UTCJul 13, 12:55 UTC20m
2026-07-12 CQH8594 - Jul 12, 19:55 UTCJul 13, 11:10 UTC15h 15m
2026-07-12 CQH8593 - Jul 12, 06:05 UTCJul 12, 18:35 UTC12h 30m
2026-07-11 CQH7057 - Jul 11, 09:55 UTCJul 12, 06:30 UTC20h 35m
2026-07-11 CQH8666 - Jul 11, 07:55 UTCJul 12, 06:30 UTC22h 35m
2026-07-10 CQH8665 - Jul 10, 16:00 UTCJul 11, 10:10 UTC18h 10m
2026-07-10 CQH6515 - Jul 10, 13:40 UTCJul 10, 14:00 UTC20m
2026-07-10 CQH8779 - Jul 10, 00:50 UTCJul 10, 10:55 UTC10h 5m
2026-07-07 CQH7050 - Jul 7, 12:55 UTCJul 8, 05:45 UTC16h 50m
2026-07-07 CQH7049 - Jul 7, 11:05 UTCJul 7, 11:35 UTC30m
2026-07-06 CQH8598 - Jul 6, 11:45 UTCJul 7, 11:15 UTC23h 30m
2026-07-06 CQH8598 - Jul 6, 08:45 UTCJul 6, 13:00 UTC4h 15m
2026-07-06 CQH8597 - Jul 6, 03:35 UTCJul 6, 07:05 UTC3h 30m
2026-07-03 CQH6524 - Jul 3, 11:55 UTCJul 3, 16:15 UTC4h 20m
2026-07-03 CQH6523 - Jul 3, 05:30 UTCJul 3, 10:00 UTC4h 30m
2026-06-27 CQH6595 - Jun 27, 22:49 UTCJun 27, 23:00 UTC10m
2026-06-26 CQH7355 - Jun 26, 23:19 UTCJun 26, 23:30 UTC10m
2026-06-26 CQH6482 - Jun 26, 20:20 UTCJun 26, 20:40 UTC20m
2026-06-26 CQH8661 - Jun 26, 09:39 UTCJun 26, 09:59 UTC20m
2026-06-25 CQH6466 - Jun 25, 08:34 UTCJun 25, 10:09 UTC1h 35m
2026-06-25 CQH6465 - Jun 25, 05:15 UTCJun 25, 06:55 UTC1h 40m
2026-06-24 CQH8662 - Jun 24, 06:10 UTCJun 24, 06:29 UTC20m
2026-06-22 CQH6596 TNA → SZX Jun 22, 17:00 UTCJun 22, 17:10 UTC10m
2026-06-21 CQH6411 - Jun 21, 09:49 UTCJun 21, 10:09 UTC20m
2026-06-18 CQH7058 UBN → PVG Jun 18, 13:00 UTCJun 19, 07:04 UTC18h 4m
2026-06-18 CQH8598 - Jun 18, 09:45 UTCJun 19, 07:04 UTC21h 19m
2026-06-18 CQH8597 - Jun 18, 03:55 UTCJun 18, 07:15 UTC3h 20m
2026-06-16 CQH8952 - Jun 16, 03:39 UTCJun 16, 04:10 UTC30m
2026-06-16 CQH8951 - Jun 16, 01:55 UTCJun 16, 02:24 UTC30m
2026-06-11 CQH6294 BKK → XIY Jun 11, 20:00 UTCJun 11, 20:55 UTC55m
2026-06-11 CQH6293 - Jun 11, 17:05 UTCJun 11, 17:30 UTC25m
2026-05-27 CQH7596 ZUH → YTY May 27, 06:29 UTCMay 27, 06:40 UTC10m
2026-05-21 CQH8552 SIN → PVG May 21, 22:40 UTCMay 22, 01:40 UTC3h 0m
2026-05-21 CQH8551 PVG → SIN May 21, 17:25 UTCMay 21, 20:30 UTC3h 5m
2026-05-21 CQH6538 FUK → PVG May 21, 09:00 UTCMay 21, 09:10 UTC10m
2026-05-18 CQH7385 NGB → SYX May 18, 05:50 UTCMay 18, 14:25 UTC8h 35m
2026-05-15 CQH7385 NGB → SYX May 15, 11:10 UTCMay 15, 15:00 UTC3h 49m
2026-05-12 CQH7385 NGB → SYX May 12, 10:20 UTCMay 12, 13:51 UTC3h 30m
2026-05-10 CQH8952 TPE → PVG May 10, 04:15 UTCMay 10, 11:55 UTC7h 40m
2026-05-10 CQH8951 PVG → TPE May 10, 02:20 UTCMay 10, 02:55 UTC35m
2026-05-09 CQH6732 - May 9, 11:40 UTCMay 9, 12:00 UTC20m
2026-05-09 CQH6731 - May 9, 09:15 UTCMay 9, 09:45 UTC30m
2026-05-08 CQH6411 CGO → CGQ May 8, 09:59 UTCMay 9, 09:15 UTC23h 15m
2026-05-02 CQH8522 HKT → PVG May 2, 17:20 UTCMay 3, 11:35 UTC18h 14m
2026-05-02 CQH8522 HKT → PVG May 2, 14:15 UTCMay 3, 11:35 UTC21h 19m
2026-05-02 CQH8521 PVG → HKT May 2, 12:30 UTCMay 3, 10:50 UTC22h 19m
2026-05-02 CQH8521 PVG → HKT May 2, 06:05 UTCMay 3, 03:10 UTC21h 5m

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-327J page for operator, model, and routing details .

Mode-S 781CD5 frequently asked

What is Mode-S code 781CD5?
781CD5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-327J.
Where is Mode-S 781CD5 registered?
Mode-S code 781CD5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781CD5 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 781CD5, octal 36016325, decimal 7,871,701.
What flights does 781CD5 operate?
Mode-S 781CD5 has broadcast 20 distinct callsigns, including CQH8598, CQH8597, CQH7385, CQH6524, CQH8952.