Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781D68

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-328U · AIRBUS A-320neo

Hex
781D68
Octal
36016550
Decimal
7,871,848
Country
CN
Tail
B-328U
Type
A20N
No current signal · last broadcast 3d ago
Flights observed
89
Distinct callsigns
20
Country
CN
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 781D68.

Country allocation

The ICAO 24-bit address 781D68 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
CQH7285 - 5 2026-07-02
CQH8521 Spring Airlines 4 2026-07-08
CQH7200 - 4 2026-07-03
CQH7199 - 4 2026-07-03
CQH6523 - 4 2026-06-21
CQH6922 - 3 2026-07-03
CQH6921 - 3 2026-07-03
CQH6516 Spring Airlines 3 2026-04-13
CQH6294 Spring Airlines 3 2026-05-16
CQH6293 Spring Airlines 3 2026-05-16
CQH8933 Spring Airlines 2 2026-04-18
CQH8779 Spring Airlines 2 2026-04-15
CQH8598 Spring Airlines 2 2026-06-09
CQH8597 Spring Airlines 2 2026-06-09
CQH8552 Spring Airlines 2 2026-05-25
CQH8551 Spring Airlines 2 2026-05-24
CQH7420 - 2 2026-07-02
CQH6524 - 2 2026-06-21
CQH6515 - 2 2026-04-13
CQH6466 Spring Airlines 2 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 CQH7462 - Jul 10, 15:55 UTCJul 10, 16:15 UTC20m
2026-07-10 CQH7461 - Jul 10, 13:05 UTCJul 10, 13:20 UTC15m
2026-07-09 CQH8876 - Jul 9, 05:00 UTCJul 9, 06:25 UTC1h 25m
2026-07-08 CQH8521 PVG → HKT Jul 8, 13:15 UTCJul 9, 03:20 UTC14h 5m
2026-07-08 CQH8521 PVG → HKT Jul 8, 00:50 UTCJul 8, 19:40 UTC18h 50m
2026-07-03 CQH7200 - Jul 3, 21:00 UTCJul 3, 21:20 UTC20m
2026-07-03 CQH7200 - Jul 3, 16:45 UTCJul 3, 18:20 UTC1h 35m
2026-07-03 CQH7199 - Jul 3, 14:50 UTCJul 3, 15:10 UTC20m
2026-07-03 CQH7199 - Jul 3, 10:35 UTCJul 3, 10:55 UTC20m
2026-07-03 CQH6922 - Jul 3, 02:45 UTCJul 3, 03:05 UTC20m
2026-07-03 CQH6921 - Jul 3, 00:55 UTCJul 3, 01:10 UTC15m
2026-07-02 CQH6921 - Jul 2, 21:45 UTCJul 2, 21:55 UTC10m
2026-07-02 CQH7420 - Jul 2, 14:50 UTCJul 2, 16:25 UTC1h 35m
2026-07-02 CQH7285 - Jul 2, 11:00 UTCJul 2, 13:30 UTC2h 30m
2026-06-28 CQH7200 - Jun 28, 18:59 UTCJun 28, 19:20 UTC20m
2026-06-28 CQH7200 - Jun 28, 14:45 UTCJun 28, 16:14 UTC1h 30m
2026-06-28 CQH7199 - Jun 28, 13:04 UTCJun 28, 13:19 UTC15m
2026-06-28 CQH7199 - Jun 28, 09:05 UTCJun 28, 09:15 UTC10m
2026-06-28 CQH6922 - Jun 28, 05:55 UTCJun 28, 06:15 UTC20m
2026-06-28 CQH6922 - Jun 28, 02:39 UTCJun 28, 02:54 UTC15m
2026-06-28 CQH6921 - Jun 28, 00:45 UTCJun 28, 01:04 UTC20m
2026-06-26 CQH8934 - Jun 26, 14:25 UTCJun 26, 15:49 UTC1h 25m
2026-06-26 CQH8511 - Jun 26, 11:40 UTCJun 26, 13:04 UTC1h 25m
2026-06-25 CQH7286 - Jun 25, 01:54 UTCJun 25, 04:20 UTC2h 25m
2026-06-24 CQH7419 - Jun 24, 22:39 UTCJun 25, 00:44 UTC2h 5m
2026-06-24 CQH7420 - Jun 24, 15:09 UTCJun 24, 16:54 UTC1h 45m
2026-06-24 CQH7285 - Jun 24, 06:10 UTCJun 24, 12:50 UTC6h 40m
2026-06-22 CQH8521 PVG → HKT Jun 22, 13:05 UTCJun 22, 20:10 UTC7h 5m
2026-06-21 CQH8521 PVG → HKT Jun 21, 14:54 UTCJun 22, 13:54 UTC23h 0m
2026-06-21 CQH6524 - Jun 21, 10:44 UTCJun 21, 15:09 UTC4h 25m
2026-06-21 CQH6523 - Jun 21, 05:00 UTCJun 21, 09:35 UTC4h 35m
2026-06-20 CQH6523 - Jun 20, 06:35 UTCJun 21, 05:35 UTC23h 0m
2026-06-19 CQH7057 - Jun 19, 14:34 UTCJun 20, 06:45 UTC16h 10m
2026-06-19 CQH6524 - Jun 19, 10:44 UTCJun 20, 06:45 UTC20h 0m
2026-06-19 CQH6523 - Jun 19, 05:09 UTCJun 19, 09:24 UTC4h 15m
2026-06-18 CQH6523 - Jun 18, 08:05 UTCJun 19, 05:45 UTC21h 39m
2026-06-18 CQH7050 CJJ → PVG Jun 18, 07:45 UTCJun 19, 05:45 UTC21h 59m
2026-06-18 CQH7049 PVG → CJJ Jun 18, 05:40 UTCJun 18, 06:10 UTC30m
2026-06-09 CQH8598 HKG → PVG Jun 9, 09:00 UTCJun 9, 12:55 UTC3h 55m
2026-06-09 CQH8597 PVG → HKG Jun 9, 03:55 UTCJun 9, 07:15 UTC3h 20m
2026-06-05 CQH7025 SHE → HDG Jun 5, 05:35 UTCJun 5, 05:45 UTC10m
2026-06-02 CQH8804 - Jun 2, 14:30 UTCJun 2, 14:45 UTC15m
2026-06-02 CQH6421 SJW → SYX Jun 2, 01:40 UTCJun 2, 04:20 UTC2h 40m
2026-06-01 CQH6466 BKK → NNG Jun 1, 08:25 UTCJun 1, 10:00 UTC1h 35m
2026-06-01 CQH6465 NNG → BKK Jun 1, 05:15 UTCJun 1, 07:00 UTC1h 45m
2026-05-31 CQH6466 BKK → NNG May 31, 08:30 UTCMay 31, 10:10 UTC1h 40m
2026-05-26 CQH8598 HKG → PVG May 26, 10:54 UTCMay 26, 15:05 UTC4h 10m
2026-05-26 CQH8597 PVG → HKG May 26, 06:04 UTCMay 26, 09:15 UTC3h 10m
2026-05-25 CQH8552 SIN → PVG May 25, 02:40 UTCMay 25, 03:40 UTC1h 0m
2026-05-24 CQH8551 PVG → SIN May 24, 01:40 UTCMay 24, 19:05 UTC17h 25m

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-328U page for operator, model, and routing details .

Mode-S 781D68 frequently asked

What is Mode-S code 781D68?
781D68 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-328U.
Where is Mode-S 781D68 registered?
Mode-S code 781D68 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781D68 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781D68, octal 36016550, decimal 7,871,848.
What flights does 781D68 operate?
Mode-S 781D68 has broadcast 20 distinct callsigns, including CQH7285, CQH8521, CQH7200, CQH7199, CQH6523.