Apparatus

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sensors Mode-S transponder

7817A5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30AD · AIRBUS A-320neo

Hex
7817A5
Octal
36013645
Decimal
7,870,373
Country
CN
Tail
B-30AD
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
81
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7817A5.

Country allocation

The ICAO 24-bit address 7817A5 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 5 2026-06-10
CQH6524 Spring Airlines 4 2026-06-10
CQH8511 - 3 2026-07-16
CQH7348 - 3 2026-07-04
CQH7347 - 3 2026-07-04
CQH8934 - 2 2026-07-16
CQH8715 Spring Airlines 2 2026-05-23
CQH8631 Spring Airlines 2 2026-05-07
CQH8593 - 2 2026-07-14
CQH7496 Spring Airlines 2 2026-06-02
CQH7259 Spring Airlines 2 2026-05-22
CQH6922 Spring Airlines 2 2026-04-24
CQH6294 - 2 2026-06-28
CQH6293 - 2 2026-06-28
CQH8933 Spring Airlines 1 2026-06-03
CQH8875 Spring Airlines 1 2026-05-19
CQH8810 - 1 2026-07-01
CQH8786 - 1 2026-05-08
CQH8754 - 1 2026-07-20
CQH8753 - 1 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 CQH7656 - Jul 21, 10:35 UTCJul 21, 14:20 UTC3h 45m
2026-07-21 CQH8702 KWE → NGB Jul 21, 06:05 UTCJul 21, 07:00 UTC55m
2026-07-20 CQH8754 - Jul 20, 04:45 UTCJul 20, 04:55 UTC10m
2026-07-19 CQH8753 - Jul 19, 22:45 UTCJul 19, 23:00 UTC15m
2026-07-19 CQH6482 DOY → SZX Jul 19, 17:00 UTCJul 19, 17:30 UTC30m
2026-07-18 CQH8661 SJW → CGQ Jul 18, 23:15 UTCJul 19, 09:50 UTC10h 35m
2026-07-16 CQH8934 - Jul 16, 14:35 UTCJul 17, 02:30 UTC11h 55m
2026-07-16 CQH8511 - Jul 16, 12:05 UTCJul 16, 13:20 UTC1h 15m
2026-07-15 CQH8511 - Jul 15, 13:20 UTCJul 16, 13:15 UTC23h 55m
2026-07-14 CQH8594 BKI → PUS Jul 14, 19:00 UTCJul 15, 12:00 UTC16h 59m
2026-07-14 CQH8593 - Jul 14, 18:00 UTCJul 14, 18:15 UTC15m
2026-07-14 CQH8593 - Jul 14, 14:55 UTCJul 14, 16:10 UTC1h 15m
2026-07-09 CQH6516 - Jul 9, 19:30 UTCJul 10, 00:00 UTC4h 30m
2026-07-09 CQH6515 - Jul 9, 14:15 UTCJul 9, 18:10 UTC3h 55m
2026-07-08 CQH7135 - Jul 8, 04:10 UTCJul 8, 04:35 UTC25m
2026-07-04 CQH7348 - Jul 4, 17:25 UTCJul 4, 17:40 UTC15m
2026-07-04 CQH7347 - Jul 4, 11:30 UTCJul 4, 11:45 UTC15m
2026-07-03 CQH7348 - Jul 3, 16:50 UTCJul 3, 17:05 UTC15m
2026-07-03 CQH7347 - Jul 3, 11:15 UTCJul 3, 11:30 UTC15m
2026-07-01 CQH8810 - Jul 1, 03:40 UTCJul 1, 04:15 UTC35m
2026-06-28 CQH6294 - Jun 28, 20:04 UTCJun 28, 21:24 UTC1h 20m
2026-06-28 CQH6293 - Jun 28, 16:09 UTCJun 28, 17:30 UTC1h 20m
2026-06-26 CQH7502 - Jun 26, 04:24 UTCJun 26, 05:10 UTC45m
2026-06-26 CQH7501 - Jun 26, 02:24 UTCJun 26, 02:54 UTC30m
2026-06-19 CQH6294 - Jun 19, 20:09 UTCJun 19, 20:34 UTC25m
2026-06-19 CQH6293 - Jun 19, 16:29 UTCJun 19, 17:29 UTC1h 0m
2026-06-12 CQH7520 SZX → SHA Jun 12, 05:30 UTCJun 12, 05:40 UTC10m
2026-06-12 CQH7519 SHA → SZX Jun 12, 03:25 UTCJun 12, 03:40 UTC15m
2026-06-11 CQH7556 SZX → SHA Jun 11, 22:00 UTCJun 11, 22:15 UTC15m
2026-06-11 CQH7555 SHA → SZX Jun 11, 16:50 UTCJun 11, 17:15 UTC25m
2026-06-10 CQH6524 KUL → PVG Jun 10, 10:45 UTCJun 10, 14:55 UTC4h 10m
2026-06-10 CQH6523 PVG → KUL Jun 10, 09:00 UTCJun 10, 09:25 UTC25m
2026-06-10 CQH6523 PVG → KUL Jun 10, 04:55 UTCJun 10, 06:10 UTC1h 15m
2026-06-06 CQH6524 KUL → PVG Jun 6, 10:39 UTCJun 6, 14:50 UTC4h 10m
2026-06-06 CQH6523 PVG → KUL Jun 6, 04:35 UTCJun 6, 08:55 UTC4h 20m
2026-06-04 CQH8512 CNX → PVG Jun 4, 01:55 UTCJun 4, 03:15 UTC1h 20m
2026-06-03 CQH8933 CAN → CNX Jun 3, 22:05 UTCJun 4, 00:25 UTC2h 20m
2026-06-02 CQH7496 SIN → CAN Jun 2, 16:30 UTCJun 2, 16:50 UTC20m
2026-06-02 CQH7496 SIN → CAN Jun 2, 13:20 UTCJun 2, 13:45 UTC25m
2026-06-02 CQH7495 CAN → SIN Jun 2, 08:35 UTCJun 2, 08:50 UTC15m
2026-05-23 CQH7420 BKK → CAN May 23, 15:15 UTCMay 23, 15:50 UTC35m
2026-05-23 CQH7285 HKG → BKK May 23, 05:40 UTCMay 23, 13:15 UTC7h 35m
2026-05-23 CQH8715 PVG → HKG May 23, 03:30 UTCMay 23, 03:35 UTC5m
2026-05-22 CQH8715 PVG → HKG May 22, 11:05 UTCMay 23, 02:50 UTC15h 45m
2026-05-22 CQH7259 PVG → PEN May 22, 01:50 UTCMay 22, 11:55 UTC10h 5m
2026-05-21 CQH7259 PVG → PEN May 21, 06:45 UTCMay 22, 02:55 UTC20h 10m
2026-05-20 CQH7057 PVG → UBN May 20, 12:45 UTCMay 21, 06:55 UTC18h 10m
2026-05-20 CQH8598 HKG → PVG May 20, 08:35 UTCMay 21, 06:55 UTC22h 20m
2026-05-20 CQH8597 PVG → HKG May 20, 03:40 UTCMay 20, 06:25 UTC2h 46m
2026-05-19 CQH8560 ICN → PVG May 19, 10:35 UTCMay 20, 06:25 UTC19h 51m

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-30AD page for operator, model, and routing details .

Mode-S 7817A5 frequently asked

What is Mode-S code 7817A5?
7817A5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30AD.
Where is Mode-S 7817A5 registered?
Mode-S code 7817A5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7817A5 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7817A5, octal 36013645, decimal 7,870,373.
What flights does 7817A5 operate?
Mode-S 7817A5 has broadcast 20 distinct callsigns, including CQH6523, CQH6524, CQH8511, CQH7348, CQH7347.