Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781ACD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-321R · AIRBUS A-321

Hex
781ACD
Octal
36015315
Decimal
7,871,181
Country
CN
Tail
B-321R
Type
A321
No current signal · last broadcast 1d ago
Flights observed
84
Distinct callsigns
12
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781ACD.

Country allocation

The ICAO 24-bit address 781ACD 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 12 distinct

Callsign Airline Flights Last seen
CHB6312 China West Air 19 2026-05-28
CHB6230 China West Air 18 2026-06-01
CHB6334 China West Air 13 2026-06-01
CHB6333 China West Air 13 2026-06-01
CHB6311 China West Air 11 2026-05-29
CHB6229 China West Air 3 2026-06-01
CHB6544 - 2 2026-04-21
CHB6543 - 1 2026-04-21
CHB6454 China West Air 1 2026-05-29
CHB6372 China West Air 1 2026-04-15
CHB6371 China West Air 1 2026-04-15
CHB6305 - 1 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 CHB6230 SZX → CKG Jun 1, 15:55 UTCJun 1, 16:10 UTC15m
2026-06-01 CHB6334 TNA → SZX Jun 1, 13:55 UTCJun 1, 14:15 UTC20m
2026-06-01 CHB6333 SZX → TNA Jun 1, 02:00 UTCJun 1, 02:10 UTC10m
2026-06-01 CHB6229 CKG → SZX Jun 1, 00:15 UTCJun 1, 00:25 UTC10m
2026-05-30 CHB6230 SZX → CKG May 30, 16:55 UTCMay 30, 17:10 UTC15m
2026-05-30 CHB6334 TNA → SZX May 30, 15:15 UTCMay 30, 15:25 UTC10m
2026-05-30 CHB6333 SZX → TNA May 30, 01:50 UTCMay 30, 02:06 UTC16m
2026-05-29 CHB6230 SZX → CKG May 29, 17:55 UTCMay 29, 18:15 UTC20m
2026-05-29 CHB6311 CGO → SZX May 29, 16:20 UTCMay 29, 16:35 UTC15m
2026-05-29 CHB6454 CAN → CGO May 29, 02:15 UTCMay 29, 02:25 UTC10m
2026-05-28 CHB6312 SZX → CGO May 28, 15:55 UTCMay 28, 16:10 UTC15m
2026-05-25 CHB6312 SZX → CGO May 25, 16:35 UTCMay 25, 16:45 UTC10m
2026-05-25 CHB6311 CGO → SZX May 25, 14:00 UTCMay 25, 14:15 UTC15m
2026-05-24 CHB6312 SZX → CGO May 24, 15:35 UTCMay 24, 15:50 UTC15m
2026-05-24 CHB6311 CGO → SZX May 24, 13:50 UTCMay 24, 14:05 UTC15m
2026-05-22 CHB6312 SZX → CGO May 22, 18:05 UTCMay 22, 18:20 UTC15m
2026-05-22 CHB6334 TNA → SZX May 22, 16:20 UTCMay 22, 16:35 UTC15m
2026-05-22 CHB6333 SZX → TNA May 22, 04:20 UTCMay 22, 04:30 UTC10m
2026-05-21 CHB6230 SZX → CKG May 21, 22:00 UTCMay 21, 22:15 UTC15m
2026-05-21 CHB6311 CGO → SZX May 21, 20:30 UTCMay 21, 20:40 UTC10m
2026-05-18 CHB6312 SZX → CGO May 18, 15:20 UTCMay 18, 15:35 UTC15m
2026-05-17 CHB6312 SZX → CGO May 17, 16:55 UTCMay 17, 17:10 UTC15m
2026-05-17 CHB6333 SZX → TNA May 17, 02:10 UTCMay 17, 02:20 UTC10m
2026-05-16 CHB6230 SZX → CKG May 16, 16:05 UTCMay 16, 16:20 UTC15m
2026-05-16 CHB6334 TNA → SZX May 16, 14:05 UTCMay 16, 14:20 UTC15m
2026-05-16 CHB6333 SZX → TNA May 16, 02:00 UTCMay 16, 02:10 UTC10m
2026-05-15 CHB6230 SZX → CKG May 15, 18:10 UTCMay 15, 18:20 UTC10m
2026-05-15 CHB6334 TNA → SZX May 15, 16:40 UTCMay 15, 16:55 UTC15m
2026-05-15 CHB6333 SZX → TNA May 15, 02:00 UTCMay 15, 02:10 UTC10m
2026-05-14 CHB6230 SZX → CKG May 14, 16:55 UTCMay 14, 17:10 UTC15m
2026-05-14 CHB6334 TNA → SZX May 14, 15:25 UTCMay 14, 15:40 UTC15m
2026-05-14 CHB6333 SZX → TNA May 14, 02:05 UTCMay 14, 02:15 UTC10m
2026-05-12 CHB6230 SZX → CKG May 12, 16:00 UTCMay 12, 16:15 UTC15m
2026-05-12 CHB6334 TNA → SZX May 12, 14:10 UTCMay 12, 14:25 UTC15m
2026-05-11 CHB6230 SZX → CKG May 11, 15:50 UTCMay 11, 16:00 UTC10m
2026-05-10 CHB6312 SZX → CGO May 10, 15:19 UTCMay 10, 15:29 UTC10m
2026-05-10 CHB6311 CGO → SZX May 10, 13:49 UTCMay 10, 14:00 UTC10m
2026-05-09 CHB6312 SZX → CGO May 9, 15:25 UTCMay 9, 15:40 UTC15m
2026-05-08 CHB6312 SZX → CGO May 8, 16:40 UTCMay 8, 16:50 UTC10m
2026-05-08 CHB6311 CGO → SZX May 8, 14:30 UTCMay 8, 14:40 UTC10m
2026-05-07 CHB6312 SZX → CGO May 7, 15:30 UTCMay 7, 15:40 UTC10m
2026-05-07 CHB6311 CGO → SZX May 7, 14:00 UTCMay 7, 14:15 UTC15m
2026-05-06 CHB6312 SZX → CGO May 6, 15:25 UTCMay 6, 15:35 UTC10m
2026-05-05 CHB6312 SZX → CGO May 5, 15:30 UTCMay 5, 15:40 UTC10m
2026-05-05 CHB6311 CGO → SZX May 5, 13:50 UTCMay 5, 14:00 UTC10m
2026-05-04 CHB6312 SZX → CGO May 4, 15:25 UTCMay 4, 15:40 UTC15m
2026-05-02 CHB6312 SZX → CGO May 2, 15:25 UTCMay 2, 15:40 UTC15m
2026-05-01 CHB6312 SZX → CGO May 1, 15:35 UTCMay 1, 15:50 UTC15m
2026-04-30 CHB6312 SZX → CGO Apr 30, 15:30 UTCApr 30, 15:40 UTC10m
2026-04-30 CHB6311 CGO → SZX Apr 30, 13:50 UTCApr 30, 14:05 UTC15m

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-321R page for operator, model, and routing details .

Mode-S 781ACD frequently asked

What is Mode-S code 781ACD?
781ACD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-321R.
Where is Mode-S 781ACD registered?
Mode-S code 781ACD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781ACD 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 781ACD, octal 36015315, decimal 7,871,181.
What flights does 781ACD operate?
Mode-S 781ACD has broadcast 12 distinct callsigns, including CHB6312, CHB6230, CHB6334, CHB6333, CHB6311.