Apparatus

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sensors Mode-S transponder

781EC7

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32D5 · AIRBUS A-320neo

Hex
781EC7
Octal
36017307
Decimal
7,872,199
Country
CN
Tail
B-32D5
Type
A20N
No current signal · last broadcast Jul 26, 16:15 UTC
Flights observed
112
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 16:15 UTC

Last known position

Most recent position reported by Mode-S 781EC7.

Country allocation

The ICAO 24-bit address 781EC7 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
CQH6523 Spring Airlines 6 2026-04-23
CQH6524 Spring Airlines 5 2026-04-16
CQH6516 - 5 2026-07-12
CQH6515 - 4 2026-07-11
CQH8934 - 3 2026-07-09
CQH8511 - 3 2026-07-05
CQH7419 - 3 2026-07-06
CQH7355 - 3 2026-07-20
CQH7286 - 3 2026-07-07
CQH7285 - 3 2026-06-29
CQH8671 Spring Airlines 2 2026-05-26
CQH7502 Spring Airlines 2 2026-05-21
CQH7501 Spring Airlines 2 2026-05-20
CQH7420 - 2 2026-06-29
CQH7356 Spring Airlines 2 2026-07-21
CQH7260 Spring Airlines 2 2026-06-21
CQH7200 - 2 2026-06-30
CQH7199 - 2 2026-06-30
CQH7050 - 2 2026-06-26
CQH7049 - 2 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CQH6369 - Jul 26, 15:40 UTCJul 26, 16:15 UTC35m
2026-07-26 CQH6370 - Jul 26, 12:45 UTCJul 26, 13:05 UTC20m
2026-07-25 CQH6466 BKK → NNG Jul 25, 08:50 UTCJul 25, 10:25 UTC1h 35m
2026-07-25 CQH6465 NNG → BKK Jul 25, 05:30 UTCJul 25, 07:20 UTC1h 50m
2026-07-25 CQH6465 NNG → BKK Jul 25, 00:55 UTCJul 25, 01:05 UTC10m
2026-07-24 CQH7256 DLU → SHA Jul 24, 13:15 UTCJul 24, 13:40 UTC25m
2026-07-24 CQH7255 SHA → DLU Jul 24, 08:25 UTCJul 24, 08:55 UTC30m
2026-07-24 CQH8826 NGB → SJW Jul 24, 06:50 UTCJul 24, 07:05 UTC15m
2026-07-21 CQH8753 SZX → XIY Jul 21, 22:35 UTCJul 21, 22:45 UTC10m
2026-07-21 CQH7356 LHW → SZX Jul 21, 16:20 UTCJul 21, 16:30 UTC10m
2026-07-20 CQH7355 - Jul 20, 23:00 UTCJul 20, 23:10 UTC10m
2026-07-20 CQH6728 NNY → SZX Jul 20, 18:20 UTCJul 20, 18:35 UTC15m
2026-07-20 CQH6727 SZX → NNY Jul 20, 13:55 UTCJul 20, 14:05 UTC10m
2026-07-20 CQH8672 HIA → SZX Jul 20, 11:55 UTCJul 20, 12:20 UTC25m
2026-07-16 CQH7135 - Jul 16, 00:45 UTCJul 16, 01:10 UTC25m
2026-07-12 CQH8665 - Jul 12, 19:20 UTCJul 13, 11:50 UTC16h 30m
2026-07-12 CQH6516 - Jul 12, 15:55 UTCJul 13, 11:50 UTC19h 55m
2026-07-11 CQH6515 - Jul 11, 03:45 UTCJul 11, 13:45 UTC10h 0m
2026-07-10 CQH6218 - Jul 10, 11:20 UTCJul 11, 02:00 UTC14h 40m
2026-07-10 CQH6217 - Jul 10, 01:55 UTCJul 10, 09:55 UTC8h 0m
2026-07-09 CQH8933 - Jul 9, 22:35 UTCJul 10, 00:50 UTC2h 15m
2026-07-09 CQH8934 - Jul 9, 14:40 UTCJul 9, 15:45 UTC1h 5m
2026-07-09 CQH8952 - Jul 9, 05:10 UTCJul 9, 13:25 UTC8h 15m
2026-07-08 CQH8951 - Jul 8, 09:50 UTCJul 9, 03:55 UTC18h 5m
2026-07-08 CQH8598 - Jul 8, 09:25 UTCJul 9, 03:55 UTC18h 30m
2026-07-08 CQH8597 - Jul 8, 04:20 UTCJul 8, 07:45 UTC3h 25m
2026-07-07 CQH7286 - Jul 7, 01:50 UTCJul 7, 02:20 UTC30m
2026-07-06 CQH7419 - Jul 6, 23:00 UTCJul 7, 00:35 UTC1h 35m
2026-07-05 CQH8934 - Jul 5, 14:45 UTCJul 5, 15:50 UTC1h 5m
2026-07-05 CQH8511 - Jul 5, 13:10 UTCJul 5, 13:35 UTC25m
2026-07-05 CQH8511 - Jul 5, 12:00 UTCJul 5, 12:35 UTC35m
2026-07-04 CQH8716 - Jul 4, 05:45 UTCJul 4, 06:00 UTC15m
2026-07-04 CQH8715 - Jul 4, 03:30 UTCJul 4, 03:55 UTC25m
2026-07-03 CQH8521 PVG → HKT Jul 3, 15:00 UTCJul 4, 02:35 UTC11h 35m
2026-07-02 CQH7286 - Jul 2, 03:15 UTCJul 2, 04:15 UTC1h 0m
2026-07-01 CQH7419 - Jul 1, 22:20 UTCJul 1, 23:10 UTC50m
2026-07-01 CQH7348 - Jul 1, 14:30 UTCJul 1, 15:00 UTC30m
2026-07-01 CQH7347 - Jul 1, 09:00 UTCJul 1, 09:15 UTC15m
2026-07-01 CQH6922 - Jul 1, 05:50 UTCJul 1, 06:20 UTC30m
2026-07-01 CQH6922 - Jul 1, 02:40 UTCJul 1, 02:55 UTC15m
2026-07-01 CQH6921 - Jul 1, 00:35 UTCJul 1, 01:05 UTC30m
2026-06-30 CQH6921 - Jun 30, 21:40 UTCJun 30, 21:55 UTC15m
2026-06-30 CQH7200 - Jun 30, 19:20 UTCJun 30, 19:45 UTC25m
2026-06-30 CQH7200 - Jun 30, 15:05 UTCJun 30, 16:35 UTC1h 30m
2026-06-30 CQH7199 - Jun 30, 12:50 UTCJun 30, 13:05 UTC15m
2026-06-30 CQH7199 - Jun 30, 08:45 UTCJun 30, 09:00 UTC15m
2026-06-29 CQH7420 - Jun 29, 15:14 UTCJun 29, 16:55 UTC1h 40m
2026-06-29 CQH7285 - Jun 29, 00:34 UTCJun 29, 13:19 UTC12h 45m
2026-06-26 CQH7050 - Jun 26, 03:15 UTCJun 26, 03:34 UTC20m
2026-06-26 CQH7049 - Jun 26, 01:24 UTCJun 26, 02:00 UTC35m

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-32D5 page for operator, model, and routing details .

Mode-S 781EC7 frequently asked

What is Mode-S code 781EC7?
781EC7 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32D5.
Where is Mode-S 781EC7 registered?
Mode-S code 781EC7 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781EC7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781EC7, octal 36017307, decimal 7,872,199.
What flights does 781EC7 operate?
Mode-S 781EC7 has broadcast 20 distinct callsigns, including CQH6523, CQH6524, CQH6516, CQH6515, CQH8934.