sensors Mode-S transponder

781FF0

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32FM · AIRBUS A-320neo

Hex
781FF0
Octal
36017760
Decimal
7,872,496
Country
CN
Tail
B-32FM
Type
A20N
No current signal · last broadcast Jul 25, 10:55 UTC
Flights observed
64
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 10:55 UTC

Last known position

Most recent position reported by Mode-S 781FF0.

Country allocation

The ICAO 24-bit address 781FF0 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
CQH6411 - 5 2026-07-12
CQH6523 Spring Airlines 4 2026-06-02
CQH7679 Spring Airlines 3 2026-05-17
CQH7355 Spring Airlines 3 2026-05-18
CQH6524 Spring Airlines 3 2026-06-02
CQH6293 Spring Airlines 3 2026-05-12
CQH7135 - 2 2026-06-27
CQH6731 - 2 2026-06-30
CQH6596 Spring Airlines 2 2026-05-05
CQH6540 Spring Airlines 2 2026-05-02
CQH6294 Spring Airlines 2 2026-05-12
CQH8952 Spring Airlines 1 2026-06-01
CQH8951 Spring Airlines 1 2026-06-01
CQH8933 Spring Airlines 1 2026-05-30
CQH8875 - 1 2026-07-02
CQH8779 Spring Airlines 1 2026-07-20
CQH8753 Spring Airlines 1 2026-05-19
CQH8688 - 1 2026-05-09
CQH8687 - 1 2026-05-06
CQH8684 Spring Airlines 1 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CQH7432 DMK → NGB Jul 25, 07:30 UTCJul 25, 10:55 UTC3h 25m
2026-07-25 CQH7431 NGB → BKK Jul 25, 03:10 UTCJul 25, 05:40 UTC2h 30m
2026-07-24 CQH7520 SZX → SHA Jul 24, 05:25 UTCJul 24, 05:35 UTC10m
2026-07-24 CQH7519 SHA → SZX Jul 24, 03:15 UTCJul 24, 03:50 UTC35m
2026-07-22 CQH7368 - Jul 22, 23:15 UTCJul 22, 23:35 UTC20m
2026-07-20 CQH8779 SHA → SYX Jul 20, 00:10 UTCJul 20, 01:25 UTC1h 15m
2026-07-12 CQH6411 - Jul 12, 09:55 UTCJul 12, 10:15 UTC20m
2026-07-10 CQH6411 - Jul 10, 10:15 UTCJul 10, 10:25 UTC10m
2026-07-02 CQH8522 - Jul 2, 03:45 UTCJul 2, 20:25 UTC16h 40m
2026-07-02 CQH8875 - Jul 2, 01:50 UTCJul 2, 02:10 UTC20m
2026-07-01 CQH8521 PVG → HKT Jul 1, 12:20 UTCJul 2, 01:10 UTC12h 50m
2026-06-30 CQH6732 - Jun 30, 12:10 UTCJun 30, 12:35 UTC25m
2026-06-30 CQH6731 - Jun 30, 06:10 UTCJun 30, 09:50 UTC3h 40m
2026-06-29 CQH6731 - Jun 29, 10:15 UTCJun 30, 09:50 UTC23h 36m
2026-06-28 CQH7133 LHW → TSN Jun 28, 09:50 UTCJun 28, 10:15 UTC25m
2026-06-27 CQH7135 - Jun 27, 01:00 UTCJun 27, 01:24 UTC25m
2026-06-12 CQH6482 - Jun 12, 18:05 UTCJun 12, 18:15 UTC10m
2026-06-12 CQH6156 ZUH → SJW Jun 12, 05:05 UTCJun 12, 10:55 UTC5h 50m
2026-06-06 CQH7135 LHW → TSN Jun 6, 00:45 UTCJun 6, 01:10 UTC25m
2026-06-02 CQH6524 KUL → PVG Jun 2, 10:55 UTCJun 2, 15:00 UTC4h 5m
2026-06-02 CQH6523 PVG → KUL Jun 2, 05:05 UTCJun 2, 09:15 UTC4h 10m
2026-06-01 CQH8952 TPE → PVG Jun 1, 03:35 UTCJun 1, 03:50 UTC15m
2026-06-01 CQH8951 PVG → TPE Jun 1, 01:15 UTCJun 1, 01:35 UTC20m
2026-05-31 CQH6218 NRT → PVG May 31, 11:25 UTCMay 31, 12:55 UTC1h 30m
2026-05-31 CQH6217 PVG → NRT May 31, 08:25 UTCMay 31, 09:30 UTC1h 5m
2026-05-30 CQH8933 CAN → CNX May 30, 22:50 UTCMay 31, 00:30 UTC1h 40m
2026-05-25 CQH6809 SHE → KWL May 25, 23:45 UTCMay 26, 00:09 UTC25m
2026-05-24 CQH8684 HRB → NGB May 24, 06:15 UTCMay 24, 06:25 UTC10m
2026-05-19 CQH8753 SZX → XIY May 19, 22:50 UTCMay 19, 23:00 UTC10m
2026-05-18 CQH7355 SZX → LHW May 18, 23:15 UTCMay 18, 23:25 UTC10m
2026-05-17 CQH7679 SZX → LHW May 17, 23:20 UTCMay 17, 23:30 UTC10m
2026-05-16 CQH7355 SZX → LHW May 16, 22:40 UTCMay 16, 22:50 UTC10m
2026-05-16 CQH6727 SZX → NNY May 16, 13:46 UTCMay 16, 14:01 UTC15m
2026-05-15 CQH6524 KUL → PVG May 15, 14:25 UTCMay 16, 01:00 UTC10h 34m
2026-05-15 CQH6524 KUL → PVG May 15, 11:00 UTCMay 15, 11:15 UTC15m
2026-05-14 CQH6523 PVG → KUL May 14, 15:20 UTCMay 15, 09:25 UTC18h 5m
2026-05-14 CQH6523 PVG → KUL May 14, 12:05 UTCMay 15, 09:25 UTC21h 20m
2026-05-14 CQH6523 PVG → KUL May 14, 03:00 UTCMay 14, 10:45 UTC7h 45m
2026-05-12 CQH6294 BKK → XIY May 12, 20:05 UTCMay 12, 21:01 UTC55m
2026-05-12 CQH6293 XIY → BKK May 12, 17:10 UTCMay 12, 18:05 UTC55m
2026-05-11 CQH6293 XIY → BKK May 11, 20:05 UTCMay 12, 18:05 UTC22h 0m
2026-05-11 CQH6294 BKK → XIY May 11, 19:55 UTCMay 12, 18:00 UTC22h 5m
2026-05-11 CQH6293 XIY → BKK May 11, 16:40 UTCMay 11, 17:30 UTC51m
2026-05-09 CQH6481 SZX → DOY May 9, 22:34 UTCMay 9, 22:45 UTC10m
2026-05-09 CQH8688 - May 9, 17:35 UTCMay 9, 17:55 UTC20m
2026-05-07 CQH7020 - May 7, 02:45 UTCMay 7, 14:20 UTC11h 35m
2026-05-06 CQH8687 - May 6, 21:55 UTCMay 6, 22:05 UTC10m
2026-05-05 CQH7679 SZX → LHW May 5, 22:40 UTCMay 5, 22:55 UTC15m
2026-05-05 CQH6596 TNA → SZX May 5, 15:40 UTCMay 5, 15:50 UTC10m
2026-05-03 CQH7679 SZX → LHW May 3, 23:15 UTCMay 3, 23:25 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-32FM page for operator, model, and routing details .

Mode-S 781FF0 frequently asked

What is Mode-S code 781FF0?
781FF0 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32FM.
Where is Mode-S 781FF0 registered?
Mode-S code 781FF0 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781FF0 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 10:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781FF0, octal 36017760, decimal 7,872,496.
What flights does 781FF0 operate?
Mode-S 781FF0 has broadcast 20 distinct callsigns, including CQH6411, CQH6523, CQH7679, CQH7355, CQH6524.