Apparatus

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sensors Mode-S transponder

781CB8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-327C · AIRBUS A-321neo

Hex
781CB8
Octal
36016270
Decimal
7,871,672
Country
CN
Tail
B-327C
Type
A21N
No current signal · last broadcast 4h ago
Flights observed
78
Distinct callsigns
12
Country
CN
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 781CB8.

Country allocation

The ICAO 24-bit address 781CB8 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
CDC8231 Zhejiang Loong Airlines 41 2026-05-28
CDC8232 Zhejiang Loong Airlines 12 2026-05-23
CDC8965 Zhejiang Loong Airlines 7 2026-05-03
CDC8966 Zhejiang Loong Airlines 4 2026-04-26
CDC8888 Zhejiang Loong Airlines 3 2026-05-04
CDC8995 Zhejiang Loong Airlines 2 2026-04-20
CDC8988 Zhejiang Loong Airlines 2 2026-05-02
CDC8629 - 2 2026-05-28
CDC8199 Zhejiang Loong Airlines 2 2026-04-29
CDC8899 Zhejiang Loong Airlines 1 2026-05-30
CDC8630 - 1 2026-05-28
CDC8627 Zhejiang Loong Airlines 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CDC8899 SZX → HGH May 30, 01:30 UTCMay 30, 01:45 UTC15m
2026-05-29 CDC8627 HGH → SZX May 29, 04:50 UTCMay 29, 23:50 UTC19h 0m
2026-05-28 CDC8231 HRB → HGH May 28, 23:40 UTCMay 29, 09:15 UTC9h 35m
2026-05-28 CDC8630 - May 28, 11:45 UTCMay 28, 12:00 UTC15m
2026-05-28 CDC8629 - May 28, 09:20 UTCMay 28, 09:30 UTC10m
2026-05-26 CDC8231 HRB → HGH May 26, 23:54 UTCMay 27, 08:30 UTC8h 35m
2026-05-26 CDC8231 HRB → HGH May 26, 08:34 UTCMay 27, 04:59 UTC20h 25m
2026-05-26 CDC8231 HRB → HGH May 26, 04:45 UTCMay 26, 23:54 UTC19h 10m
2026-05-26 CDC8231 HRB → HGH May 26, 00:04 UTCMay 26, 23:54 UTC23h 50m
2026-05-25 CDC8231 HRB → HGH May 25, 23:35 UTCMay 26, 08:34 UTC9h 0m
2026-05-25 CDC8231 HRB → HGH May 25, 09:20 UTCMay 26, 05:10 UTC19h 49m
2026-05-25 CDC8231 HRB → HGH May 25, 04:40 UTCMay 26, 00:19 UTC19h 40m
2026-05-24 CDC8231 HRB → HGH May 24, 23:30 UTCMay 25, 09:30 UTC10h 0m
2026-05-24 CDC8231 HRB → HGH May 24, 09:25 UTCMay 25, 05:15 UTC19h 50m
2026-05-24 CDC8231 HRB → HGH May 24, 05:15 UTCMay 24, 23:40 UTC18h 25m
2026-05-23 CDC8231 HRB → HGH May 23, 23:20 UTCMay 24, 09:35 UTC10h 15m
2026-05-23 CDC8231 HRB → HGH May 23, 08:25 UTCMay 24, 05:40 UTC21h 15m
2026-05-23 CDC8232 SYX → HGH May 23, 05:00 UTCMay 23, 23:30 UTC18h 31m
2026-05-23 CDC8232 SYX → HGH May 23, 00:05 UTCMay 23, 23:30 UTC23h 25m
2026-05-22 CDC8232 SYX → HGH May 22, 09:10 UTCMay 23, 05:05 UTC19h 54m
2026-05-22 CDC8231 HRB → HGH May 22, 05:25 UTCMay 23, 00:20 UTC18h 55m
2026-05-21 CDC8231 HRB → HGH May 21, 23:30 UTCMay 22, 09:25 UTC9h 55m
2026-05-21 CDC8231 HRB → HGH May 21, 08:35 UTCMay 22, 05:45 UTC21h 10m
2026-05-21 CDC8231 HRB → HGH May 21, 04:55 UTCMay 22, 00:00 UTC19h 5m
2026-05-20 CDC8232 SYX → HGH May 20, 23:30 UTCMay 21, 08:55 UTC9h 25m
2026-05-20 CDC8232 SYX → HGH May 20, 08:30 UTCMay 21, 05:05 UTC20h 35m
2026-05-20 CDC8231 HRB → HGH May 20, 04:45 UTCMay 20, 23:30 UTC18h 45m
2026-05-19 CDC8232 SYX → HGH May 19, 13:35 UTCMay 20, 08:50 UTC19h 16m
2026-05-19 CDC8231 HRB → HGH May 19, 08:45 UTCMay 20, 05:05 UTC20h 21m
2026-05-18 CDC8231 HRB → HGH May 18, 23:35 UTCMay 19, 13:35 UTC14h 0m
2026-05-18 CDC8231 HRB → HGH May 18, 08:25 UTCMay 19, 05:00 UTC20h 34m
2026-05-18 CDC8231 HRB → HGH May 18, 04:51 UTCMay 19, 00:10 UTC19h 19m
2026-05-18 CDC8231 HRB → HGH May 18, 00:05 UTCMay 18, 23:40 UTC23h 34m
2026-05-17 CDC8231 HRB → HGH May 17, 23:30 UTCMay 18, 08:35 UTC9h 5m
2026-05-17 CDC8231 HRB → HGH May 17, 08:30 UTCMay 18, 05:10 UTC20h 40m
2026-05-17 CDC8231 HRB → HGH May 17, 04:55 UTCMay 18, 00:05 UTC19h 10m
2026-05-16 CDC8231 HRB → HGH May 16, 23:25 UTCMay 17, 08:45 UTC9h 20m
2026-05-16 CDC8231 HRB → HGH May 16, 08:41 UTCMay 17, 05:20 UTC20h 40m
2026-05-16 CDC8231 HRB → HGH May 16, 04:50 UTCMay 16, 23:30 UTC18h 40m
2026-05-15 CDC8231 HRB → HGH May 15, 23:35 UTCMay 16, 08:55 UTC9h 21m
2026-05-15 CDC8231 HRB → HGH May 15, 09:45 UTCMay 16, 05:05 UTC19h 19m
2026-05-15 CDC8231 HRB → HGH May 15, 06:05 UTCMay 16, 05:05 UTC22h 59m
2026-05-13 CDC8232 SYX → HGH May 13, 04:55 UTCMay 13, 23:35 UTC18h 40m
2026-05-12 CDC8232 SYX → HGH May 12, 08:25 UTCMay 13, 05:10 UTC20h 45m
2026-05-12 CDC8231 HRB → HGH May 12, 04:55 UTCMay 12, 08:35 UTC3h 40m
2026-05-11 CDC8231 HRB → HGH May 11, 08:35 UTCMay 12, 05:15 UTC20h 41m
2026-05-11 CDC8231 HRB → HGH May 11, 04:45 UTCMay 11, 08:40 UTC3h 55m
2026-05-10 CDC8232 SYX → HGH May 10, 08:30 UTCMay 11, 05:00 UTC20h 30m
2026-05-10 CDC8232 SYX → HGH May 10, 04:45 UTCMay 10, 08:50 UTC4h 5m
2026-05-09 CDC8231 HRB → HGH May 9, 08:25 UTCMay 10, 05:04 UTC20h 40m

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-327C page for operator, model, and routing details .

Mode-S 781CB8 frequently asked

What is Mode-S code 781CB8?
781CB8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-327C.
Where is Mode-S 781CB8 registered?
Mode-S code 781CB8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781CB8 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781CB8, octal 36016270, decimal 7,871,672.
What flights does 781CB8 operate?
Mode-S 781CB8 has broadcast 12 distinct callsigns, including CDC8231, CDC8232, CDC8965, CDC8966, CDC8888.