Apparatus

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sensors Mode-S transponder

781754

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30A1 · AIRBUS A-320neo

Hex
781754
Octal
36013524
Decimal
7,870,292
Country
CN
Tail
B-30A1
Type
A20N
No current signal · last broadcast Jul 26, 13:30 UTC
Flights observed
110
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:30 UTC

Last known position

Most recent position reported by Mode-S 781754.

Country allocation

The ICAO 24-bit address 781754 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
QDA917 Qingdao Airlines 12 2026-07-26
QDA918 Qingdao Airlines 11 2026-07-26
QDA909 Qingdao Airlines 9 2026-07-21
QDA926 - 8 2026-06-19
QDA915 - 8 2026-07-04
QDA929 - 6 2026-06-17
QDA920 - 6 2026-07-22
QDA910 Qingdao Airlines 6 2026-07-22
QDA916 - 5 2026-07-04
QDA908 - 5 2026-07-20
QDA907 Qingdao Airlines 4 2026-07-20
QDA930 - 3 2026-06-17
QDA923 Qingdao Airlines 3 2026-06-09
QDA903 - 3 2026-07-02
QDA9865 - 2 2026-07-04
QDA9786 - 2 2026-05-26
QDA9785 - 2 2026-05-26
QDA924 - 2 2026-06-20
QDA919 - 2 2026-07-22
QDA904 - 2 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QDA918 BKK → TAO Jul 26, 11:50 UTCJul 26, 13:30 UTC1h 40m
2026-07-26 QDA917 TAO → BKK Jul 26, 08:55 UTCJul 26, 10:30 UTC1h 35m
2026-07-22 QDA920 - Jul 22, 13:20 UTCJul 22, 14:05 UTC45m
2026-07-22 QDA919 - Jul 22, 11:20 UTCJul 22, 12:10 UTC50m
2026-07-22 QDA910 NGO → TAO Jul 22, 04:45 UTCJul 22, 05:25 UTC40m
2026-07-21 QDA909 TAO → NGO Jul 21, 14:55 UTCJul 22, 03:20 UTC12h 25m
2026-07-21 QDA901 TAO → ICN Jul 21, 13:15 UTCJul 21, 13:45 UTC30m
2026-07-20 QDA908 - Jul 20, 12:05 UTCJul 20, 13:05 UTC1h 0m
2026-07-20 QDA908 - Jul 20, 08:50 UTCJul 20, 09:05 UTC15m
2026-07-20 QDA907 TAO → KUL Jul 20, 06:50 UTCJul 20, 07:15 UTC25m
2026-07-19 QDA908 - Jul 19, 09:05 UTCJul 20, 03:55 UTC18h 50m
2026-07-19 QDA908 - Jul 19, 08:50 UTCJul 20, 03:55 UTC19h 5m
2026-07-19 QDA907 TAO → KUL Jul 19, 06:40 UTCJul 19, 07:15 UTC35m
2026-07-18 QDA908 - Jul 18, 09:40 UTCJul 19, 03:50 UTC18h 10m
2026-07-18 QDA907 TAO → KUL Jul 18, 07:45 UTCJul 18, 08:10 UTC25m
2026-07-17 QDA907 TAO → KUL Jul 17, 11:15 UTCJul 18, 05:00 UTC17h 46m
2026-07-10 QDA918 - Jul 10, 12:15 UTCJul 10, 13:50 UTC1h 35m
2026-07-10 QDA917 - Jul 10, 09:15 UTCJul 10, 10:55 UTC1h 40m
2026-07-04 QDA9866 - Jul 4, 14:05 UTCJul 4, 14:35 UTC30m
2026-07-04 QDA9865 - Jul 4, 11:15 UTCJul 4, 11:45 UTC30m
2026-07-04 QDA916 - Jul 4, 06:25 UTCJul 4, 06:35 UTC10m
2026-07-04 QDA915 - Jul 4, 03:10 UTCJul 4, 04:35 UTC1h 25m
2026-07-03 QDA915 - Jul 3, 05:05 UTCJul 4, 04:35 UTC23h 30m
2026-07-03 QDA904 - Jul 3, 04:15 UTCJul 3, 05:50 UTC1h 35m
2026-07-02 QDA903 - Jul 2, 13:45 UTCJul 3, 02:50 UTC13h 5m
2026-07-02 QDA9865 - Jul 2, 07:20 UTCJul 2, 11:55 UTC4h 35m
2026-07-02 QDA916 - Jul 2, 06:15 UTCJul 2, 06:25 UTC10m
2026-07-02 QDA915 - Jul 2, 04:00 UTCJul 2, 04:15 UTC15m
2026-07-01 QDA920 - Jul 1, 13:10 UTCJul 1, 13:55 UTC45m
2026-07-01 QDA910 - Jul 1, 05:05 UTCJul 1, 11:40 UTC6h 35m
2026-07-01 QDA909 - Jul 1, 01:55 UTCJul 1, 03:15 UTC1h 20m
2026-06-28 QDA6054 - Jun 28, 13:04 UTCJun 28, 13:14 UTC10m
2026-06-27 QDA916 - Jun 27, 06:50 UTCJun 27, 07:04 UTC15m
2026-06-27 QDA915 - Jun 27, 04:05 UTCJun 27, 04:24 UTC20m
2026-06-26 QDA6054 - Jun 26, 12:24 UTCJun 26, 12:34 UTC10m
2026-06-25 QDA902 - Jun 25, 13:35 UTCJun 26, 12:34 UTC23h 0m
2026-06-25 QDA901 - Jun 25, 11:59 UTCJun 25, 12:25 UTC25m
2026-06-24 QDA918 - Jun 24, 11:14 UTCJun 24, 13:00 UTC1h 45m
2026-06-24 QDA917 - Jun 24, 08:14 UTCJun 24, 09:49 UTC1h 35m
2026-06-21 QDA920 - Jun 21, 13:29 UTCJun 21, 14:15 UTC45m
2026-06-21 QDA910 - Jun 21, 04:44 UTCJun 21, 12:04 UTC7h 20m
2026-06-20 QDA909 - Jun 20, 11:49 UTCJun 21, 03:25 UTC15h 35m
2026-06-20 QDA924 - Jun 20, 08:44 UTCJun 20, 08:59 UTC15m
2026-06-19 QDA926 - Jun 19, 14:34 UTCJun 20, 04:29 UTC13h 55m
2026-06-18 QDA916 - Jun 18, 07:25 UTCJun 18, 08:25 UTC1h 0m
2026-06-18 QDA915 - Jun 18, 05:00 UTCJun 18, 05:35 UTC35m
2026-06-18 QDA915 - Jun 18, 04:15 UTCJun 18, 04:30 UTC15m
2026-06-17 QDA930 - Jun 17, 17:30 UTCJun 17, 21:45 UTC4h 15m
2026-06-17 QDA929 - Jun 17, 15:46 UTCJun 17, 16:10 UTC25m
2026-06-17 QDA929 - Jun 17, 11:40 UTCJun 17, 12:55 UTC1h 15m

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-30A1 page for operator, model, and routing details .

Mode-S 781754 frequently asked

What is Mode-S code 781754?
781754 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30A1.
Where is Mode-S 781754 registered?
Mode-S code 781754 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781754 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781754, octal 36013524, decimal 7,870,292.
What flights does 781754 operate?
Mode-S 781754 has broadcast 20 distinct callsigns, including QDA917, QDA918, QDA909, QDA926, QDA915.