Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781C93

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-326M · AIRBUS A-321neo

Hex
781C93
Octal
36016223
Decimal
7,871,635
Country
CN
Tail
B-326M
Type
A21N
No current signal · last broadcast 6h ago
Flights observed
91
Distinct callsigns
11
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 781C93.

Country allocation

The ICAO 24-bit address 781C93 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 11 distinct

Callsign Airline Flights Last seen
QDA907 Qingdao Airlines 30 2026-06-02
QDA908 Qingdao Airlines 29 2026-06-02
QDA929 - 10 2026-06-01
QDA930 - 9 2026-06-01
QDA6054 Qingdao Airlines 3 2026-05-07
QDA926 Qingdao Airlines 2 2026-05-25
QDA924 Qingdao Airlines 2 2026-04-16
QDA918 Qingdao Airlines 2 2026-04-26
QDA917 Qingdao Airlines 2 2026-04-26
QDA923 Qingdao Airlines 1 2026-04-16
QDA902 Qingdao Airlines 1 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 QDA908 KUL → TAO Jun 2, 08:20 UTCJun 2, 12:50 UTC4h 30m
2026-06-02 QDA907 TAO → KUL Jun 2, 06:30 UTCJun 2, 06:50 UTC20m
2026-06-01 QDA930 - Jun 1, 17:30 UTCJun 2, 03:35 UTC10h 5m
2026-06-01 QDA929 - Jun 1, 15:30 UTCJun 1, 15:50 UTC20m
2026-06-01 QDA929 - Jun 1, 11:35 UTCJun 1, 12:45 UTC1h 10m
2026-05-29 QDA908 KUL → TAO May 29, 12:55 UTCMay 30, 12:30 UTC23h 35m
2026-05-29 QDA908 KUL → TAO May 29, 08:55 UTCMay 29, 13:10 UTC4h 15m
2026-05-29 QDA907 TAO → KUL May 29, 07:00 UTCMay 29, 07:25 UTC25m
2026-05-28 QDA908 KUL → TAO May 28, 08:50 UTCMay 29, 04:10 UTC19h 20m
2026-05-28 QDA908 KUL → TAO May 28, 08:35 UTCMay 29, 04:10 UTC19h 35m
2026-05-28 QDA907 TAO → KUL May 28, 06:30 UTCMay 28, 06:50 UTC20m
2026-05-27 QDA930 - May 27, 17:40 UTCMay 28, 03:40 UTC10h 0m
2026-05-27 QDA929 - May 27, 15:40 UTCMay 27, 16:10 UTC30m
2026-05-25 QDA926 SGN → TAO May 25, 21:45 UTCMay 26, 12:40 UTC14h 55m
2026-05-25 QDA926 SGN → TAO May 25, 14:50 UTCMay 26, 12:40 UTC21h 50m
2026-05-24 QDA908 KUL → TAO May 24, 08:45 UTCMay 24, 12:55 UTC4h 10m
2026-05-23 QDA907 TAO → KUL May 23, 12:50 UTCMay 24, 07:15 UTC18h 25m
2026-05-23 QDA907 TAO → KUL May 23, 12:20 UTCMay 24, 07:15 UTC18h 55m
2026-05-23 QDA908 KUL → TAO May 23, 09:05 UTCMay 24, 07:15 UTC22h 10m
2026-05-23 QDA907 TAO → KUL May 23, 06:55 UTCMay 23, 07:45 UTC50m
2026-05-22 QDA930 - May 22, 17:20 UTCMay 22, 21:20 UTC4h 0m
2026-05-22 QDA929 - May 22, 15:35 UTCMay 22, 15:55 UTC20m
2026-05-22 QDA929 - May 22, 11:40 UTCMay 22, 12:40 UTC1h 0m
2026-05-20 QDA908 KUL → TAO May 20, 12:55 UTCMay 21, 12:35 UTC23h 40m
2026-05-20 QDA908 KUL → TAO May 20, 08:50 UTCMay 20, 13:00 UTC4h 10m
2026-05-20 QDA907 TAO → KUL May 20, 06:50 UTCMay 20, 07:10 UTC20m
2026-05-19 QDA908 KUL → TAO May 19, 08:50 UTCMay 20, 04:05 UTC19h 15m
2026-05-19 QDA908 KUL → TAO May 19, 08:30 UTCMay 20, 04:05 UTC19h 35m
2026-05-19 QDA907 TAO → KUL May 19, 06:40 UTCMay 19, 07:05 UTC25m
2026-05-18 QDA930 - May 18, 17:40 UTCMay 18, 21:55 UTC4h 14m
2026-05-18 QDA929 - May 18, 11:50 UTCMay 18, 16:15 UTC4h 25m
2026-05-17 QDA908 KUL → TAO May 17, 09:45 UTCMay 17, 14:10 UTC4h 25m
2026-05-17 QDA907 TAO → KUL May 17, 07:00 UTCMay 17, 07:15 UTC15m
2026-05-16 QDA908 KUL → TAO May 16, 09:06 UTCMay 17, 04:05 UTC19h 0m
2026-05-15 QDA907 TAO → KUL May 15, 13:00 UTCMay 16, 07:16 UTC18h 15m
2026-05-15 QDA908 KUL → TAO May 15, 09:10 UTCMay 16, 07:16 UTC22h 5m
2026-05-15 QDA907 TAO → KUL May 15, 07:05 UTCMay 15, 07:30 UTC25m
2026-05-14 QDA908 KUL → TAO May 14, 08:50 UTCMay 15, 04:15 UTC19h 25m
2026-05-13 QDA930 - May 13, 17:30 UTCMay 14, 07:05 UTC13h 35m
2026-05-13 QDA929 - May 13, 11:35 UTCMay 13, 16:05 UTC4h 30m
2026-05-12 QDA929 - May 12, 12:50 UTCMay 13, 12:30 UTC23h 40m
2026-05-12 QDA908 KUL → TAO May 12, 08:50 UTCMay 12, 12:55 UTC4h 5m
2026-05-12 QDA907 TAO → KUL May 12, 03:05 UTCMay 12, 07:10 UTC4h 5m
2026-05-10 QDA908 KUL → TAO May 10, 08:54 UTCMay 10, 13:05 UTC4h 10m
2026-05-10 QDA907 TAO → KUL May 10, 07:10 UTCMay 10, 07:30 UTC20m
2026-05-10 QDA907 TAO → KUL May 10, 03:04 UTCMay 10, 04:09 UTC1h 5m
2026-05-07 QDA6054 LYA → SHE May 7, 12:30 UTCMay 7, 12:45 UTC15m
2026-05-06 QDA908 KUL → TAO May 6, 08:55 UTCMay 6, 12:15 UTC3h 20m
2026-05-06 QDA907 TAO → KUL May 6, 06:40 UTCMay 6, 07:05 UTC25m
2026-05-05 QDA902 ICN → TAO May 5, 13:40 UTCMay 6, 02:50 UTC13h 10m

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-326M page for operator, model, and routing details .

Mode-S 781C93 frequently asked

What is Mode-S code 781C93?
781C93 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-326M.
Where is Mode-S 781C93 registered?
Mode-S code 781C93 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781C93 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781C93, octal 36016223, decimal 7,871,635.
What flights does 781C93 operate?
Mode-S 781C93 has broadcast 11 distinct callsigns, including QDA907, QDA908, QDA929, QDA930, QDA6054.