Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781BD3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-220W · BOEING 737-800

Hex
781BD3
Octal
36015723
Decimal
7,871,443
Country
CN
Tail
B-220W
Type
B738
No current signal · last broadcast 14d ago
Flights observed
51
Distinct callsigns
20
Country
CN
Last broadcast
14d ago

Last known position

Most recent position reported by Mode-S 781BD3.

Country allocation

The ICAO 24-bit address 781BD3 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
CDG4631 - 11 2026-06-21
CDG4632 - 7 2026-06-21
CDG2320 Shandong Airlines 3 2026-06-26
CDG7630 - 2 2026-06-26
CDG7629 - 2 2026-06-26
CDG4681 Shandong Airlines 2 2026-06-10
CDG4618 - 2 2026-06-25
CDG4617 - 2 2026-06-25
CDG4610 - 2 2026-06-12
CDG4609 Shandong Airlines 2 2026-06-12
CDG4092 - 2 2026-04-13
CDG2319 - 2 2026-06-27
CDG4912 Shandong Airlines 1 2026-05-19
CDG4911 Shandong Airlines 1 2026-05-19
CDG4910 - 1 2026-06-30
CDG4682 Shandong Airlines 1 2026-05-22
CDG4642 Shandong Airlines 1 2026-04-30
CDG4620 Shandong Airlines 1 2026-05-03
CDG4619 Shandong Airlines 1 2026-05-03
CDG4616 Shandong Airlines 1 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-30 CDG4910 - Jun 30, 04:35 UTCJun 30, 04:45 UTC10m
2026-06-27 CDG2319 - Jun 27, 09:00 UTCJun 27, 09:09 UTC10m
2026-06-26 CDG2320 SHE → TYN Jun 26, 23:25 UTCJun 26, 23:34 UTC10m
2026-06-26 CDG7630 - Jun 26, 09:30 UTCJun 26, 09:45 UTC15m
2026-06-26 CDG7629 - Jun 26, 07:30 UTCJun 26, 07:55 UTC25m
2026-06-25 CDG4618 - Jun 25, 12:54 UTCJun 25, 13:20 UTC25m
2026-06-25 CDG4617 - Jun 25, 11:25 UTCJun 25, 11:44 UTC20m
2026-06-24 CDG2320 SHE → TYN Jun 24, 01:39 UTCJun 24, 01:55 UTC15m
2026-06-22 CDG7630 - Jun 22, 10:00 UTCJun 22, 10:10 UTC10m
2026-06-22 CDG7629 - Jun 22, 08:04 UTCJun 22, 08:25 UTC20m
2026-06-21 CDG4632 - Jun 21, 10:49 UTCJun 22, 07:14 UTC20h 25m
2026-06-21 CDG4632 - Jun 21, 09:49 UTCJun 22, 07:14 UTC21h 25m
2026-06-21 CDG4631 - Jun 21, 06:29 UTCJun 21, 08:04 UTC1h 35m
2026-06-12 CDG4610 - Jun 12, 03:35 UTCJun 12, 04:05 UTC30m
2026-06-12 CDG4609 TAO → ICN Jun 12, 01:55 UTCJun 12, 02:20 UTC25m
2026-06-10 CDG4681 TAO → SZX Jun 10, 03:05 UTCJun 10, 03:50 UTC45m
2026-06-06 - - Jun 6, 14:20 UTCJun 6, 14:30 UTC10m
2026-05-25 CDG4632 HKG → TAO May 25, 09:50 UTCMay 25, 11:00 UTC1h 10m
2026-05-25 CDG4631 TAO → HKG May 25, 07:30 UTCMay 25, 07:45 UTC15m
2026-05-25 CDG4631 TAO → HKG May 25, 06:25 UTCMay 25, 06:40 UTC15m
2026-05-22 CDG4682 SZX → TAO May 22, 07:20 UTCMay 22, 07:30 UTC10m
2026-05-22 CDG4681 TAO → SZX May 22, 03:30 UTCMay 22, 03:50 UTC20m
2026-05-19 CDG4912 FOC → TAO May 19, 13:55 UTCMay 19, 14:05 UTC10m
2026-05-19 CDG4911 FOC → ZUH May 19, 12:10 UTCMay 19, 12:30 UTC20m
2026-05-06 CDG2319 TYN → SHE May 6, 08:45 UTCMay 6, 08:55 UTC10m
2026-05-05 CDG2320 SHE → TYN May 5, 23:30 UTCMay 5, 23:40 UTC10m
2026-05-03 CDG4620 ICN → TAO May 3, 14:05 UTCMay 3, 14:35 UTC30m
2026-05-03 CDG4619 TAO → ICN May 3, 12:30 UTCMay 3, 13:00 UTC30m
2026-05-02 CDG1196 ZUH → TNA May 2, 08:15 UTCMay 2, 08:25 UTC10m
2026-04-30 CDG4632 HKG → TAO Apr 30, 10:00 UTCApr 30, 10:15 UTC15m
2026-04-30 CDG4631 TAO → HKG Apr 30, 07:45 UTCApr 30, 08:10 UTC25m
2026-04-30 CDG4631 TAO → HKG Apr 30, 06:35 UTCApr 30, 07:05 UTC30m
2026-04-30 CDG4642 PEK → TAO Apr 30, 02:00 UTCApr 30, 02:10 UTC10m
2026-04-29 CDG4618 ICN → TAO Apr 29, 13:05 UTCApr 29, 13:35 UTC30m
2026-04-29 CDG4617 TAO → ICN Apr 29, 11:40 UTCApr 29, 11:55 UTC15m
2026-04-29 CDG4616 ICN → TAO Apr 29, 08:15 UTCApr 29, 08:40 UTC25m
2026-04-29 CDG4615 TAO → ICN Apr 29, 06:45 UTCApr 29, 06:55 UTC10m
2026-04-27 CDG4632 HKG → TAO Apr 27, 10:05 UTCApr 27, 10:25 UTC20m
2026-04-27 CDG4631 TAO → HKG Apr 27, 07:50 UTCApr 27, 08:15 UTC25m
2026-04-27 CDG4631 TAO → HKG Apr 27, 06:50 UTCApr 27, 07:05 UTC15m
2026-04-26 CDG4631 TAO → HKG Apr 26, 11:00 UTCApr 27, 07:05 UTC20h 5m
2026-04-26 CDG4632 HKG → TAO Apr 26, 10:00 UTCApr 27, 07:05 UTC21h 5m
2026-04-26 CDG4631 TAO → HKG Apr 26, 06:30 UTCApr 26, 07:55 UTC1h 25m
2026-04-16 CDG4610 ICN → TAO Apr 16, 03:30 UTCApr 16, 03:45 UTC15m
2026-04-16 CDG4609 TAO → ICN Apr 16, 02:00 UTCApr 16, 02:09 UTC10m
2026-04-15 CDG4632 HKG → TAO Apr 15, 09:50 UTCApr 15, 10:55 UTC1h 5m
2026-04-15 CDG4631 TAO → HKG Apr 15, 07:35 UTCApr 15, 07:50 UTC15m
2026-04-15 CDG4631 TAO → HKG Apr 15, 06:30 UTCApr 15, 06:55 UTC25m
2026-04-13 CDG4092 - Apr 13, 04:20 UTCApr 13, 05:20 UTC1h 0m
2026-04-13 CDG4092 - Apr 13, 04:00 UTCApr 13, 04:15 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-220W page for operator, model, and routing details .

Mode-S 781BD3 frequently asked

What is Mode-S code 781BD3?
781BD3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-220W.
Where is Mode-S 781BD3 registered?
Mode-S code 781BD3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781BD3 broadcasting right now?
No active broadcast right now. Last signal was 14d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781BD3, octal 36015723, decimal 7,871,443.
What flights does 781BD3 operate?
Mode-S 781BD3 has broadcast 20 distinct callsigns, including CDG4631, CDG4632, CDG2320, CDG7630, CDG7629.