Apparatus

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sensors Mode-S transponder

781624

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-306P · AIRBUS A-320neo

Hex
781624
Octal
36013044
Decimal
7,869,988
Country
CN
Tail
B-306P
Type
A20N
No current signal · last broadcast 1h ago
Flights observed
67
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 781624.

Country allocation

The ICAO 24-bit address 781624 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 2026-05-02
CQH7355 Spring Airlines 4 2026-05-30
CQH6524 Spring Airlines 4 2026-05-02
CQH8891 Spring Airlines 3 2026-05-10
CQH8756 Spring Airlines 3 2026-05-04
CQH7679 Spring Airlines 3 2026-05-28
CQH6826 - 3 2026-05-11
CQH6825 - 3 2026-05-11
CQH8892 Spring Airlines 2 2026-05-10
CQH8875 Spring Airlines 2 2026-05-07
CQH7556 Spring Airlines 2 2026-05-26
CQH7555 Spring Airlines 2 2026-05-27
CQH6785 Spring Airlines 2 2026-05-20
CQH8876 Spring Airlines 1 2026-05-07
CQH8755 Spring Airlines 1 2026-05-04
CQH8678 - 1 2026-04-23
CQH8672 Spring Airlines 1 2026-05-24
CQH8598 Spring Airlines 1 2026-05-23
CQH8597 Spring Airlines 1 2026-05-23
CQH7462 - 1 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CQH7355 SZX → LHW May 30, 01:15 UTCMay 30, 01:25 UTC10m
2026-05-28 CQH7679 SZX → LHW May 28, 22:40 UTCMay 28, 22:50 UTC10m
2026-05-28 CQH7356 LHW → SZX May 28, 16:25 UTCMay 28, 16:35 UTC10m
2026-05-27 CQH7355 SZX → LHW May 27, 23:00 UTCMay 27, 23:10 UTC10m
2026-05-27 CQH7555 SHA → SZX May 27, 17:15 UTCMay 27, 17:30 UTC15m
2026-05-26 CQH7556 SZX → SHA May 26, 22:05 UTCMay 26, 22:15 UTC10m
2026-05-25 CQH7355 SZX → LHW May 25, 23:04 UTCMay 25, 23:14 UTC10m
2026-05-24 CQH7679 SZX → LHW May 24, 23:20 UTCMay 24, 23:35 UTC15m
2026-05-24 CQH6728 NNY → SZX May 24, 17:10 UTCMay 24, 17:30 UTC20m
2026-05-24 CQH6727 SZX → NNY May 24, 12:40 UTCMay 24, 12:50 UTC10m
2026-05-24 CQH8672 HIA → SZX May 24, 10:35 UTCMay 24, 10:50 UTC15m
2026-05-23 CQH8598 HKG → PVG May 23, 09:05 UTCMay 23, 13:10 UTC4h 5m
2026-05-23 CQH8597 PVG → HKG May 23, 03:45 UTCMay 23, 07:25 UTC3h 40m
2026-05-21 CQH7556 SZX → SHA May 21, 01:25 UTCMay 21, 01:40 UTC15m
2026-05-20 CQH6785 WUH → WUA May 20, 02:05 UTCMay 20, 02:15 UTC10m
2026-05-19 CQH7555 SHA → SZX May 19, 17:35 UTCMay 19, 17:55 UTC20m
2026-05-15 - - May 15, 23:30 UTCMay 15, 23:40 UTC10m
2026-05-13 CQH6628 CNX → XIY May 13, 14:40 UTCMay 13, 15:00 UTC20m
2026-05-13 CQH6627 XIY → CNX May 13, 12:30 UTCMay 13, 13:00 UTC30m
2026-05-13 CQH6836 ZUH → KHN May 13, 03:15 UTCMay 13, 03:35 UTC20m
2026-05-11 CQH6826 - May 11, 10:45 UTCMay 11, 12:55 UTC2h 10m
2026-05-11 CQH6825 - May 11, 06:40 UTCMay 11, 09:05 UTC2h 25m
2026-05-10 CQH8892 BKK → PVG May 10, 06:04 UTCMay 10, 09:05 UTC3h 0m
2026-05-10 CQH8891 PVG → BKK May 10, 02:20 UTCMay 10, 04:45 UTC2h 25m
2026-05-07 CQH8876 MFM → PVG May 7, 03:40 UTCMay 7, 04:45 UTC1h 5m
2026-05-07 CQH8875 PVG → MFM May 7, 02:00 UTCMay 7, 02:10 UTC10m
2026-05-07 CQH8875 PVG → MFM May 7, 00:55 UTCMay 7, 01:15 UTC20m
2026-05-05 CQH6246 OKA → PVG May 5, 06:20 UTCMay 5, 06:35 UTC15m
2026-05-05 CQH6245 PVG → OKA May 5, 04:30 UTCMay 5, 04:50 UTC20m
2026-05-04 CQH8756 BKK → PVG May 4, 20:25 UTCMay 4, 22:35 UTC2h 10m
2026-05-04 CQH8755 PVG → BKK May 4, 03:00 UTCMay 4, 18:45 UTC15h 46m
2026-05-04 CQH6609 PVG → FUK May 4, 01:20 UTCMay 4, 01:35 UTC15m
2026-05-02 CQH6524 KUL → PVG May 2, 11:05 UTCMay 2, 15:05 UTC4h 0m
2026-05-02 CQH6523 PVG → KUL May 2, 08:55 UTCMay 2, 09:20 UTC25m
2026-05-02 CQH6523 PVG → KUL May 2, 00:10 UTCMay 2, 05:15 UTC5h 5m
2026-05-01 CQH6636 KUL → PVG May 1, 21:00 UTCMay 1, 21:20 UTC20m
2026-05-01 CQH6635 PVG → KUL May 1, 01:40 UTCMay 1, 19:10 UTC17h 30m
2026-04-30 CQH7050 CJJ → PVG Apr 30, 13:05 UTCApr 30, 13:45 UTC40m
2026-04-30 CQH7049 PVG → CJJ Apr 30, 10:55 UTCApr 30, 11:25 UTC30m
2026-04-28 CQH7679 SZX → LHW Apr 28, 23:05 UTCApr 28, 23:14 UTC10m
2026-04-27 CQH7355 SZX → LHW Apr 27, 23:10 UTCApr 27, 23:20 UTC10m
2026-04-27 CQH6785 WUH → WUA Apr 27, 02:05 UTCApr 27, 02:20 UTC15m
2026-04-26 CQH6596 TNA → SZX Apr 26, 15:40 UTCApr 26, 15:55 UTC15m
2026-04-26 CQH6988 - Apr 26, 07:40 UTCApr 26, 09:05 UTC1h 25m
2026-04-26 CQH6987 - Apr 26, 05:00 UTCApr 26, 06:25 UTC1h 25m
2026-04-23 CQH7259 PVG → PEN Apr 23, 18:20 UTCApr 24, 11:55 UTC17h 35m
2026-04-23 CQH7007 - Apr 23, 13:15 UTCApr 23, 13:25 UTC10m
2026-04-23 CQH8678 - Apr 23, 02:50 UTCApr 23, 03:05 UTC15m
2026-04-22 CQH7462 - Apr 22, 17:00 UTCApr 22, 17:20 UTC20m
2026-04-22 CQH7461 - Apr 22, 13:55 UTCApr 22, 14:20 UTC25m

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-306P page for operator, model, and routing details .

Mode-S 781624 frequently asked

What is Mode-S code 781624?
781624 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-306P.
Where is Mode-S 781624 registered?
Mode-S code 781624 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781624 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781624, octal 36013044, decimal 7,869,988.
What flights does 781624 operate?
Mode-S 781624 has broadcast 20 distinct callsigns, including CQH6523, CQH7355, CQH6524, CQH8891, CQH8756.