Apparatus

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sensors Mode-S transponder

781E7A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32CN · AIRBUS A-320neo

Hex
781E7A
Octal
36017172
Decimal
7,872,122
Country
CN
Tail
B-32CN
Type
A20N
No current signal · last broadcast 23h ago
Flights observed
57
Distinct callsigns
20
Country
CN
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 781E7A.

Country allocation

The ICAO 24-bit address 781E7A 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
CDC8683 - 7 2026-07-08
CDC8684 - 6 2026-07-07
CDC8592 Zhejiang Loong Airlines 5 2026-05-16
CDC8591 Zhejiang Loong Airlines 5 2026-05-16
CDC8021 Zhejiang Loong Airlines 5 2026-06-05
CDC8655 - 4 2026-06-23
CDC8261 - 3 2026-05-14
CDC8241 - 3 2026-06-04
CDC8022 Zhejiang Loong Airlines 3 2026-06-05
CDC8998 Zhejiang Loong Airlines 2 2026-05-12
CDC8997 Zhejiang Loong Airlines 2 2026-05-12
CDC8262 - 2 2026-05-14
CDC8958 Zhejiang Loong Airlines 1 2026-06-19
CDC8874 - 1 2026-07-17
CDC8873 - 1 2026-07-17
CDC8706 Zhejiang Loong Airlines 1 2026-06-13
CDC8656 - 1 2026-06-24
CDC8539 Zhejiang Loong Airlines 1 2026-06-09
CDC8357 - 1 2026-06-22
CDC8242 - 1 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CDC8874 - Jul 17, 10:30 UTCJul 17, 10:44 UTC15m
2026-07-17 CDC8873 - Jul 17, 09:04 UTCJul 17, 09:15 UTC10m
2026-07-08 CDC8683 - Jul 8, 00:00 UTCJul 8, 00:15 UTC15m
2026-07-07 CDC8684 - Jul 7, 20:10 UTCJul 7, 20:20 UTC10m
2026-07-07 CDC8683 - Jul 7, 04:05 UTCJul 7, 04:15 UTC10m
2026-07-05 CDC8683 - Jul 5, 23:20 UTCJul 5, 23:35 UTC15m
2026-07-05 CDC8684 - Jul 5, 18:10 UTCJul 5, 18:30 UTC20m
2026-07-05 CDC8683 - Jul 5, 00:40 UTCJul 5, 00:55 UTC15m
2026-07-04 CDC8684 - Jul 4, 21:05 UTCJul 4, 21:30 UTC25m
2026-07-03 CDC8683 - Jul 3, 23:15 UTCJul 3, 23:30 UTC15m
2026-07-03 CDC8684 - Jul 3, 16:15 UTCJul 3, 16:40 UTC25m
2026-07-02 CDC8683 - Jul 2, 23:05 UTCJul 2, 23:20 UTC15m
2026-07-02 CDC8684 - Jul 2, 16:35 UTCJul 2, 16:50 UTC15m
2026-07-01 CDC8683 - Jul 1, 23:00 UTCJul 1, 23:15 UTC15m
2026-07-01 CDC8684 - Jul 1, 16:55 UTCJul 1, 17:10 UTC15m
2026-06-24 CDC8656 - Jun 24, 13:00 UTCJun 24, 13:20 UTC20m
2026-06-23 CDC8655 - Jun 23, 11:10 UTCJun 24, 06:25 UTC19h 15m
2026-06-23 CDC8655 - Jun 23, 07:29 UTCJun 24, 06:25 UTC22h 55m
2026-06-23 CDC8655 - Jun 23, 04:45 UTCJun 23, 05:00 UTC15m
2026-06-22 CDC8655 - Jun 22, 08:19 UTCJun 23, 00:00 UTC15h 40m
2026-06-22 CDC8357 - Jun 22, 05:49 UTCJun 22, 06:05 UTC15m
2026-06-19 CDC8958 CGQ → HGH Jun 19, 13:34 UTCJun 19, 14:04 UTC30m
2026-06-13 CDC8706 VTE → HGH Jun 13, 08:25 UTCJun 13, 12:00 UTC3h 35m
2026-06-09 CDC8539 XIY → HRB Jun 9, 00:55 UTCJun 9, 01:10 UTC15m
2026-06-05 CDC8022 BKK → HGH Jun 5, 10:45 UTCJun 5, 13:00 UTC2h 15m
2026-06-05 CDC8021 HGH → BKK Jun 5, 07:15 UTCJun 5, 09:30 UTC2h 15m
2026-06-04 CDC8021 HGH → BKK Jun 4, 13:05 UTCJun 5, 09:30 UTC20h 25m
2026-06-04 CDC8241 - Jun 4, 00:15 UTCJun 4, 13:50 UTC13h 35m
2026-05-16 CDC8592 CJJ → DYG May 16, 07:05 UTCMay 16, 07:25 UTC20m
2026-05-16 CDC8591 DYG → CJJ May 16, 05:25 UTCMay 16, 05:46 UTC21m
2026-05-14 CDC8262 - May 14, 06:40 UTCMay 14, 07:00 UTC20m
2026-05-14 CDC8261 - May 14, 05:15 UTCMay 14, 05:30 UTC15m
2026-05-13 CDC8592 CJJ → DYG May 13, 09:40 UTCMay 13, 10:15 UTC35m
2026-05-13 CDC8591 DYG → CJJ May 13, 07:50 UTCMay 13, 08:25 UTC35m
2026-05-12 CDC8998 SIN → DYG May 12, 08:15 UTCMay 12, 08:30 UTC15m
2026-05-12 CDC8997 DYG → SIN May 12, 06:10 UTCMay 12, 06:20 UTC10m
2026-05-10 CDC8022 BKK → HGH May 10, 10:55 UTCMay 10, 13:10 UTC2h 15m
2026-05-10 CDC8021 HGH → BKK May 10, 07:04 UTCMay 10, 09:35 UTC2h 30m
2026-05-08 CDC8078 KIX → HGH May 8, 08:55 UTCMay 8, 09:49 UTC55m
2026-05-08 CDC8077 HGH → KIX May 8, 06:20 UTCMay 8, 07:04 UTC45m
2026-04-30 CDC8262 - Apr 30, 07:05 UTCApr 30, 07:25 UTC20m
2026-04-30 CDC8261 - Apr 30, 05:50 UTCApr 30, 06:00 UTC10m
2026-04-29 CDC8592 CJJ → DYG Apr 29, 09:45 UTCApr 29, 10:30 UTC45m
2026-04-29 CDC8591 DYG → CJJ Apr 29, 07:55 UTCApr 29, 08:25 UTC30m
2026-04-25 CDC8592 CJJ → DYG Apr 25, 07:00 UTCApr 25, 07:35 UTC35m
2026-04-25 CDC8591 DYG → CJJ Apr 25, 05:15 UTCApr 25, 05:45 UTC30m
2026-04-23 CDC8261 - Apr 23, 05:05 UTCApr 23, 05:20 UTC15m
2026-04-22 CDC8592 CJJ → DYG Apr 22, 09:30 UTCApr 22, 10:05 UTC35m
2026-04-22 CDC8591 DYG → CJJ Apr 22, 07:45 UTCApr 22, 08:15 UTC30m
2026-04-21 CDC8998 SIN → DYG Apr 21, 09:15 UTCApr 21, 10:40 UTC1h 25m

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-32CN page for operator, model, and routing details .

Mode-S 781E7A frequently asked

What is Mode-S code 781E7A?
781E7A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32CN.
Where is Mode-S 781E7A registered?
Mode-S code 781E7A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E7A broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E7A, octal 36017172, decimal 7,872,122.
What flights does 781E7A operate?
Mode-S 781E7A has broadcast 20 distinct callsigns, including CDC8683, CDC8684, CDC8592, CDC8591, CDC8021.