Apparatus

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sensors Mode-S transponder

78237B

ICAO 24-bit transponder address · allocated to China

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

Hex
78237B
Octal
36021573
Decimal
7,873,403
Country
CN
Tail
B-32PW
Type
A20N
No current signal · last broadcast 3h ago
Flights observed
57
Distinct callsigns
17
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 78237B.

Country allocation

The ICAO 24-bit address 78237B 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 17 distinct

Callsign Airline Flights Last seen
CDC8565 - 13 2026-07-17
CDC8566 - 11 2026-07-09
CDC8655 - 6 2026-05-04
CDC8656 - 4 2026-05-04
CDC8998 Zhejiang Loong Airlines 3 2026-06-09
CDC8997 Zhejiang Loong Airlines 2 2026-06-09
CDC8874 - 2 2026-07-25
CDC8261 - 2 2026-06-07
CDC8124 Zhejiang Loong Airlines 2 2026-07-26
CDC8022 Zhejiang Loong Airlines 2 2026-06-10
CDC8021 Zhejiang Loong Airlines 2 2026-06-10
CDC8762 - 1 2026-07-23
CDC8592 Zhejiang Loong Airlines 1 2026-06-06
CDC8591 Zhejiang Loong Airlines 1 2026-06-06
CDC8123 Zhejiang Loong Airlines 1 2026-07-25
CDC8096 Zhejiang Loong Airlines 1 2026-06-23
CDC8095 Zhejiang Loong Airlines 1 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CDC8124 WUH → HRB Jul 26, 14:30 UTCJul 26, 14:50 UTC20m
2026-07-26 CDC8124 WUH → HRB Jul 26, 10:15 UTCJul 26, 10:30 UTC15m
2026-07-25 CDC8123 WUH → ZUH Jul 25, 15:35 UTCJul 26, 03:10 UTC11h 35m
2026-07-25 CDC8874 - Jul 25, 11:40 UTCJul 25, 11:55 UTC15m
2026-07-24 CDC8874 - Jul 24, 10:40 UTCJul 24, 10:55 UTC15m
2026-07-23 CDC8762 - Jul 23, 07:40 UTCJul 23, 07:55 UTC15m
2026-07-17 CDC8565 - Jul 17, 01:29 UTCJul 17, 05:15 UTC3h 45m
2026-07-16 CDC8565 - Jul 16, 05:20 UTCJul 17, 04:44 UTC23h 25m
2026-07-15 CDC8565 - Jul 15, 01:25 UTCJul 15, 06:00 UTC4h 35m
2026-07-13 CDC8565 - Jul 13, 05:15 UTCJul 14, 02:25 UTC21h 10m
2026-07-13 CDC8565 - Jul 13, 01:20 UTCJul 13, 06:01 UTC4h 40m
2026-07-10 CDC8565 - Jul 10, 01:20 UTCJul 10, 05:30 UTC4h 10m
2026-07-09 CDC8565 - Jul 9, 07:50 UTCJul 10, 05:30 UTC21h 40m
2026-07-09 CDC8566 - Jul 9, 04:30 UTCJul 10, 01:20 UTC20h 50m
2026-07-08 CDC8565 - Jul 8, 05:00 UTCJul 9, 04:30 UTC23h 30m
2026-07-08 CDC8565 - Jul 8, 01:40 UTCJul 8, 05:20 UTC3h 40m
2026-07-07 CDC8565 - Jul 7, 06:20 UTCJul 8, 04:40 UTC22h 20m
2026-07-05 CDC8566 - Jul 5, 01:25 UTCJul 5, 05:20 UTC3h 55m
2026-07-04 CDC8565 - Jul 4, 07:15 UTCJul 5, 05:20 UTC22h 5m
2026-07-04 CDC8566 - Jul 4, 03:45 UTCJul 5, 01:35 UTC21h 50m
2026-07-03 CDC8566 - Jul 3, 06:25 UTCJul 4, 03:55 UTC21h 30m
2026-07-01 CDC8566 - Jul 1, 05:35 UTCJul 2, 02:30 UTC20h 55m
2026-06-29 CDC8566 - Jun 29, 04:55 UTCJun 30, 02:10 UTC21h 15m
2026-06-29 CDC8566 - Jun 29, 04:30 UTCJun 30, 02:10 UTC21h 40m
2026-06-29 CDC8566 - Jun 29, 01:20 UTCJun 29, 04:55 UTC3h 35m
2026-06-27 CDC8566 - Jun 27, 05:59 UTCJun 28, 04:35 UTC22h 35m
2026-06-27 - - Jun 27, 02:25 UTCJun 27, 05:59 UTC3h 35m
2026-06-26 CDC8565 - Jun 26, 04:59 UTCJun 27, 02:35 UTC21h 35m
2026-06-25 CDC8566 - Jun 25, 02:30 UTCJun 25, 06:00 UTC3h 30m
2026-06-24 CDC8565 - Jun 24, 04:59 UTCJun 25, 02:39 UTC21h 40m
2026-06-24 CDC8566 - Jun 24, 01:24 UTCJun 24, 04:59 UTC3h 35m
2026-06-23 CDC8096 SYX → HGH Jun 23, 03:00 UTCJun 24, 01:39 UTC22h 40m
2026-06-22 CDC8095 HGH → SYX Jun 22, 23:29 UTCJun 23, 03:15 UTC3h 45m
2026-06-10 CDC8022 BKK → HGH Jun 10, 10:55 UTCJun 10, 13:20 UTC2h 25m
2026-06-10 CDC8021 HGH → BKK Jun 10, 06:55 UTCJun 10, 09:00 UTC2h 5m
2026-06-09 CDC8998 SIN → DYG Jun 9, 08:15 UTCJun 9, 08:40 UTC25m
2026-06-09 CDC8997 DYG → SIN Jun 9, 06:05 UTCJun 9, 06:35 UTC30m
2026-06-07 CDC8261 - Jun 7, 05:20 UTCJun 7, 05:35 UTC15m
2026-06-06 CDC8592 CJJ → DYG Jun 6, 06:50 UTCJun 6, 07:15 UTC25m
2026-06-06 CDC8591 DYG → CJJ Jun 6, 05:15 UTCJun 6, 05:40 UTC25m
2026-06-04 CDC8261 - Jun 4, 05:10 UTCJun 4, 05:25 UTC15m
2026-05-23 CDC8998 SIN → DYG May 23, 08:25 UTCMay 23, 08:50 UTC25m
2026-05-23 CDC8997 DYG → SIN May 23, 05:55 UTCMay 23, 06:20 UTC25m
2026-05-21 CDC8998 SIN → DYG May 21, 08:10 UTCMay 21, 08:35 UTC25m
2026-05-04 CDC8656 - May 4, 08:00 UTCMay 4, 08:10 UTC10m
2026-05-04 CDC8655 - May 4, 06:15 UTCMay 4, 06:35 UTC20m
2026-05-04 CDC8655 - May 4, 00:45 UTCMay 4, 00:55 UTC10m
2026-05-02 - - May 2, 12:05 UTCMay 2, 12:15 UTC10m
2026-05-01 CDC8656 - May 1, 07:55 UTCMay 1, 08:05 UTC10m
2026-05-01 CDC8655 - May 1, 05:30 UTCMay 1, 06:15 UTC45m

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

Mode-S 78237B frequently asked

What is Mode-S code 78237B?
78237B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32PW.
Where is Mode-S 78237B registered?
Mode-S code 78237B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78237B broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78237B, octal 36021573, decimal 7,873,403.
What flights does 78237B operate?
Mode-S 78237B has broadcast 17 distinct callsigns, including CDC8565, CDC8566, CDC8655, CDC8656, CDC8998.