Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781DAA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-329Q · AIRBUS A-321neo

Hex
781DAA
Octal
36016652
Decimal
7,871,914
Country
CN
Tail
B-329Q
Type
A21N
No current signal · last broadcast 1d ago
Flights observed
75
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781DAA.

Country allocation

The ICAO 24-bit address 781DAA 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
CDC8738 - 9 2026-07-02
CDC8737 - 9 2026-07-01
CDC8630 - 9 2026-06-07
CDC8787 - 7 2026-07-01
CDC8629 - 7 2026-06-07
CDC8788 - 6 2026-07-02
CDC8206 - 5 2026-07-01
CDC8989 - 3 2026-07-10
CDC8285 - 3 2026-06-24
CDC8007 Zhejiang Loong Airlines 3 2026-04-13
CDC8699 Zhejiang Loong Airlines 2 2026-06-11
CDC8168 Zhejiang Loong Airlines 2 2026-06-19
CDC8992 Zhejiang Loong Airlines 1 2026-06-18
CDC8966 - 1 2026-07-13
CDC8965 - 1 2026-07-13
CDC8888 Zhejiang Loong Airlines 1 2026-04-21
CDC8859 Zhejiang Loong Airlines 1 2026-05-07
CDC8700 - 1 2026-06-20
CDC8059 - 1 2026-07-07
CDC8008 - 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CDC8966 - Jul 13, 08:25 UTCJul 13, 08:40 UTC15m
2026-07-13 CDC8965 - Jul 13, 05:55 UTCJul 13, 06:35 UTC40m
2026-07-10 CDC8989 - Jul 10, 16:25 UTCJul 10, 16:45 UTC20m
2026-07-07 CDC8059 - Jul 7, 22:35 UTCJul 7, 22:45 UTC10m
2026-07-02 CDC8738 - Jul 2, 16:30 UTCJul 2, 16:45 UTC15m
2026-07-02 CDC8788 - Jul 2, 14:30 UTCJul 2, 14:55 UTC25m
2026-07-01 CDC8206 - Jul 1, 14:30 UTCJul 1, 14:50 UTC20m
2026-07-01 CDC8787 - Jul 1, 05:55 UTCJul 1, 06:10 UTC15m
2026-07-01 CDC8737 - Jul 1, 04:05 UTCJul 1, 04:25 UTC20m
2026-06-28 CDC8738 - Jun 28, 15:44 UTCJun 28, 15:55 UTC10m
2026-06-28 CDC8788 - Jun 28, 13:10 UTCJun 28, 13:25 UTC15m
2026-06-26 CDC8738 - Jun 26, 16:09 UTCJun 26, 16:20 UTC10m
2026-06-24 CDC8285 - Jun 24, 16:54 UTCJun 24, 17:05 UTC10m
2026-06-21 CDC8738 - Jun 21, 15:34 UTCJun 21, 15:44 UTC10m
2026-06-21 CDC8788 - Jun 21, 13:15 UTCJun 21, 13:24 UTC10m
2026-06-20 CDC8700 - Jun 20, 06:54 UTCJun 20, 07:04 UTC10m
2026-06-19 CDC8168 HRB → HGH Jun 19, 06:49 UTCJun 19, 07:19 UTC30m
2026-06-18 CDC8992 HRB → HGH Jun 18, 06:45 UTCJun 18, 07:20 UTC35m
2026-06-15 CDC8989 HGH → CAN Jun 15, 16:40 UTCJun 15, 16:59 UTC20m
2026-06-13 CDC8168 HRB → HGH Jun 13, 13:15 UTCJun 14, 07:00 UTC17h 46m
2026-06-13 CDC8787 - Jun 13, 05:15 UTCJun 13, 05:25 UTC10m
2026-06-13 CDC8737 HGH → SZX Jun 13, 03:10 UTCJun 13, 03:20 UTC10m
2026-06-12 CDC8788 - Jun 12, 13:15 UTCJun 12, 13:25 UTC10m
2026-06-11 CDC8699 HGH → CAN Jun 11, 05:15 UTCJun 11, 05:25 UTC10m
2026-06-10 CDC8787 - Jun 10, 04:35 UTCJun 10, 04:45 UTC10m
2026-06-10 CDC8737 HGH → SZX Jun 10, 03:05 UTCJun 10, 03:25 UTC20m
2026-06-08 - - Jun 8, 07:25 UTCJun 8, 07:35 UTC10m
2026-06-07 CDC8630 - Jun 7, 10:50 UTCJun 7, 11:05 UTC15m
2026-06-07 CDC8629 - Jun 7, 08:20 UTCJun 7, 08:35 UTC15m
2026-06-06 CDC8630 - Jun 6, 11:45 UTCJun 6, 11:55 UTC10m
2026-06-05 CDC8630 - Jun 5, 10:20 UTCJun 5, 10:30 UTC10m
2026-06-04 CDC8630 - Jun 4, 10:30 UTCJun 4, 10:40 UTC10m
2026-06-04 CDC8629 - Jun 4, 08:35 UTCJun 4, 08:50 UTC15m
2026-06-03 CDC8630 - Jun 3, 10:15 UTCJun 3, 10:25 UTC10m
2026-06-03 CDC8629 - Jun 3, 06:55 UTCJun 3, 07:10 UTC15m
2026-06-02 CDC8630 - Jun 2, 09:10 UTCJun 2, 09:25 UTC15m
2026-06-02 CDC8629 - Jun 2, 07:05 UTCJun 2, 07:15 UTC10m
2026-06-01 CDC8630 - Jun 1, 10:15 UTCJun 1, 10:25 UTC10m
2026-06-01 CDC8629 - Jun 1, 06:50 UTCJun 1, 07:05 UTC15m
2026-05-30 CDC8630 - May 30, 10:15 UTCMay 30, 10:25 UTC10m
2026-05-30 CDC8629 - May 30, 07:55 UTCMay 30, 08:05 UTC10m
2026-05-29 CDC8630 - May 29, 15:10 UTCMay 29, 15:25 UTC15m
2026-05-29 CDC8629 - May 29, 09:25 UTCMay 29, 09:40 UTC15m
2026-05-17 CDC8206 HRB → HGH May 17, 11:55 UTCMay 17, 12:30 UTC35m
2026-05-17 CDC8787 - May 17, 04:25 UTCMay 17, 04:40 UTC15m
2026-05-17 CDC8737 HGH → SZX May 17, 02:50 UTCMay 17, 03:10 UTC20m
2026-05-16 CDC8787 - May 16, 04:25 UTCMay 16, 04:35 UTC10m
2026-05-16 CDC8737 HGH → SZX May 16, 02:35 UTCMay 16, 02:55 UTC20m
2026-05-13 CDC8989 HGH → CAN May 13, 15:50 UTCMay 13, 16:15 UTC25m
2026-05-12 CDC8206 HRB → HGH May 12, 13:51 UTCMay 12, 14:20 UTC30m

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-329Q page for operator, model, and routing details .

Mode-S 781DAA frequently asked

What is Mode-S code 781DAA?
781DAA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-329Q.
Where is Mode-S 781DAA registered?
Mode-S code 781DAA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781DAA 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 781DAA, octal 36016652, decimal 7,871,914.
What flights does 781DAA operate?
Mode-S 781DAA has broadcast 20 distinct callsigns, including CDC8738, CDC8737, CDC8630, CDC8787, CDC8629.