Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781BB6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-324G · AIRBUS A-320neo

Hex
781BB6
Octal
36015666
Decimal
7,871,414
Country
CN
Tail
B-324G
Type
A20N
No current signal · last broadcast 4h ago
Flights observed
100
Distinct callsigns
20
Country
CN
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 781BB6.

Country allocation

The ICAO 24-bit address 781BB6 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
CQH6293 Spring Airlines 8 2026-05-30
CQH8522 - 5 2026-06-27
CQH8779 Spring Airlines 4 2026-06-10
CQH6523 - 4 2026-06-25
CQH6294 Spring Airlines 4 2026-05-30
CQH8875 Spring Airlines 3 2026-06-07
CQH8665 - 3 2026-06-26
CQH8521 Spring Airlines 3 2026-05-06
CQH8666 - 2 2026-06-26
CQH8593 - 2 2026-07-13
CQH8511 Spring Airlines 2 2026-06-11
CQH7502 Spring Airlines 2 2026-05-29
CQH7501 Spring Airlines 2 2026-05-29
CQH7356 Spring Airlines 2 2026-06-18
CQH7355 Spring Airlines 2 2026-04-18
CQH6900 - 2 2026-06-29
CQH6836 - 2 2026-06-22
CQH6728 - 2 2026-06-17
CQH6727 - 2 2026-06-17
CQH6628 - 2 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CQH8594 - Jul 13, 20:00 UTCJul 13, 23:00 UTC3h 0m
2026-07-13 CQH8593 - Jul 13, 18:20 UTCJul 13, 18:40 UTC20m
2026-07-13 CQH8593 - Jul 13, 10:15 UTCJul 13, 16:30 UTC6h 15m
2026-07-13 CQH8952 - Jul 13, 03:40 UTCJul 13, 04:35 UTC55m
2026-07-12 CQH8951 - Jul 12, 11:05 UTCJul 13, 01:40 UTC14h 35m
2026-07-11 CQH8663 - Jul 11, 06:05 UTCJul 11, 08:15 UTC2h 10m
2026-07-09 CQH8598 - Jul 9, 10:10 UTCJul 9, 14:10 UTC4h 0m
2026-07-09 CQH8597 - Jul 9, 05:05 UTCJul 9, 08:25 UTC3h 20m
2026-07-04 CQH6411 - Jul 4, 09:55 UTCJul 4, 10:10 UTC15m
2026-07-01 CQH6729 - Jul 1, 23:40 UTCJul 2, 00:05 UTC25m
2026-06-29 CQH6900 - Jun 29, 13:34 UTCJun 30, 11:05 UTC21h 31m
2026-06-29 CQH6900 - Jun 29, 13:24 UTCJun 30, 11:05 UTC21h 41m
2026-06-29 CQH6899 - Jun 29, 11:45 UTCJun 29, 12:09 UTC25m
2026-06-27 CQH8522 - Jun 27, 12:34 UTCJun 28, 07:09 UTC18h 35m
2026-06-27 CQH8522 - Jun 27, 07:34 UTCJun 28, 07:09 UTC23h 35m
2026-06-27 CQH8522 - Jun 27, 07:24 UTCJun 28, 02:39 UTC19h 15m
2026-06-26 CQH8666 - Jun 26, 09:35 UTCJun 27, 04:44 UTC19h 10m
2026-06-26 CQH8666 - Jun 26, 05:39 UTCJun 27, 04:44 UTC23h 5m
2026-06-26 CQH8665 - Jun 26, 04:00 UTCJun 26, 12:10 UTC8h 10m
2026-06-25 CQH8665 - Jun 25, 13:55 UTCJun 26, 12:10 UTC22h 15m
2026-06-25 CQH8665 - Jun 25, 10:45 UTCJun 26, 06:25 UTC19h 40m
2026-06-25 CQH6523 - Jun 25, 08:45 UTCJun 25, 09:10 UTC25m
2026-06-25 CQH6523 - Jun 25, 05:00 UTCJun 25, 06:00 UTC1h 0m
2026-06-22 CQH6628 - Jun 22, 15:14 UTCJun 23, 03:20 UTC12h 5m
2026-06-22 CQH6627 - Jun 22, 13:29 UTCJun 22, 13:54 UTC25m
2026-06-22 CQH6836 - Jun 22, 03:05 UTCJun 22, 03:19 UTC15m
2026-06-21 - - Jun 21, 02:45 UTCJun 21, 02:55 UTC10m
2026-06-19 CQH6595 - Jun 19, 22:34 UTCJun 19, 22:45 UTC10m
2026-06-19 CQH6786 - Jun 19, 16:09 UTCJun 19, 16:25 UTC15m
2026-06-19 CQH6785 - Jun 19, 04:50 UTCJun 19, 05:00 UTC10m
2026-06-18 CQH7356 LHW → SZX Jun 18, 21:30 UTCJun 18, 21:45 UTC15m
2026-06-17 CQH6728 - Jun 17, 18:05 UTCJun 17, 18:20 UTC15m
2026-06-17 CQH6727 - Jun 17, 13:40 UTCJun 17, 13:50 UTC10m
2026-06-15 CQH7286 - Jun 15, 01:59 UTCJun 15, 13:25 UTC11h 25m
2026-06-14 CQH7419 - Jun 14, 22:45 UTCJun 15, 00:40 UTC1h 54m
2026-06-11 CQH8934 CNX → CAN Jun 11, 14:35 UTCJun 11, 15:55 UTC1h 20m
2026-06-11 CQH8511 PVG → CNX Jun 11, 13:05 UTCJun 11, 13:20 UTC15m
2026-06-11 CQH8511 PVG → CNX Jun 11, 11:55 UTCJun 11, 12:20 UTC25m
2026-06-10 CQH8779 SHA → SYX Jun 10, 00:35 UTCJun 10, 07:15 UTC6h 40m
2026-06-09 CQH8779 SHA → SYX Jun 9, 04:15 UTCJun 10, 02:00 UTC21h 45m
2026-06-07 CQH8876 MFM → PVG Jun 7, 04:30 UTCJun 7, 04:50 UTC20m
2026-06-07 CQH8875 PVG → MFM Jun 7, 02:45 UTCJun 7, 02:55 UTC10m
2026-06-07 CQH8875 PVG → MFM Jun 7, 01:35 UTCJun 7, 02:14 UTC40m
2026-06-06 CQH8875 PVG → MFM Jun 6, 06:30 UTCJun 7, 02:14 UTC19h 45m
2026-06-05 CQH7057 PVG → UBN Jun 5, 12:05 UTCJun 6, 06:45 UTC18h 40m
2026-06-05 CQH7282 BKK → PVG Jun 5, 10:40 UTCJun 6, 06:45 UTC20h 5m
2026-06-05 CQH7281 PVG → BKK Jun 5, 06:55 UTCJun 5, 09:20 UTC2h 25m
2026-06-03 CQH6524 KUL → PVG Jun 3, 12:00 UTCJun 3, 16:05 UTC4h 5m
2026-06-03 CQH6523 PVG → KUL Jun 3, 09:55 UTCJun 3, 10:15 UTC20m
2026-06-03 CQH6523 PVG → KUL Jun 3, 06:00 UTCJun 3, 06:30 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-324G page for operator, model, and routing details .

Mode-S 781BB6 frequently asked

What is Mode-S code 781BB6?
781BB6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-324G.
Where is Mode-S 781BB6 registered?
Mode-S code 781BB6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781BB6 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781BB6, octal 36015666, decimal 7,871,414.
What flights does 781BB6 operate?
Mode-S 781BB6 has broadcast 20 distinct callsigns, including CQH6293, CQH8522, CQH8779, CQH6523, CQH6294.