Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

78239D

ICAO 24-bit transponder address · allocated to China

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

Hex
78239D
Octal
36021635
Decimal
7,873,437
Country
CN
Tail
B-32QG
Type
A20N
No current signal · last broadcast 2h ago
Flights observed
61
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 78239D.

Country allocation

The ICAO 24-bit address 78239D 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
CHH7204 - 11 2026-07-13
CHH7203 - 5 2026-07-12
CHH7303 Hainan Airlines 4 2026-06-25
CHH7564 Hainan Airlines 3 2026-06-13
CHH7384 Hainan Airlines 3 2026-06-14
CHH7807 - 2 2026-07-09
CHH7432 - 2 2026-07-01
CHH7360 Hainan Airlines 2 2026-06-25
CHH7304 Hainan Airlines 2 2026-06-25
CHH7004 - 2 2026-07-12
CHH7940 - 1 2026-06-17
CHH7939 - 1 2026-06-16
CHH7802 - 1 2026-07-09
CHH7648 - 1 2026-07-04
CHH7582 Hainan Airlines 1 2026-06-04
CHH7579 Hainan Airlines 1 2026-06-23
CHH7431 Hainan Airlines 1 2026-06-08
CHH7390 Hainan Airlines 1 2026-06-24
CHH7383 - 1 2026-06-25
CHH7332 - 1 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CHH7308 - Jul 14, 00:00 UTCJul 14, 15:15 UTC15h 15m
2026-07-13 CHH7204 - Jul 13, 13:20 UTCJul 13, 13:30 UTC10m
2026-07-12 CHH7203 - Jul 12, 10:25 UTCJul 12, 10:35 UTC10m
2026-07-12 CHH7004 - Jul 12, 00:25 UTCJul 12, 00:40 UTC15m
2026-07-11 CHH7204 - Jul 11, 17:40 UTCJul 11, 17:50 UTC10m
2026-07-11 CHH7204 - Jul 11, 13:30 UTCJul 11, 14:00 UTC30m
2026-07-11 CHH7332 - Jul 11, 04:05 UTCJul 11, 04:15 UTC10m
2026-07-10 CHH7270 - Jul 10, 05:15 UTCJul 10, 05:25 UTC10m
2026-07-09 CHH7807 - Jul 9, 05:00 UTCJul 9, 05:15 UTC15m
2026-07-09 CHH7802 - Jul 9, 02:50 UTCJul 9, 03:05 UTC15m
2026-07-08 CHH7204 - Jul 8, 12:00 UTCJul 8, 15:40 UTC3h 40m
2026-07-06 CHH7203 - Jul 6, 13:45 UTCJul 6, 17:00 UTC3h 15m
2026-07-04 CHH7648 - Jul 4, 07:55 UTCJul 4, 11:45 UTC3h 50m
2026-07-02 CHH7002 - Jul 2, 23:05 UTCJul 2, 23:20 UTC15m
2026-07-01 CHH7204 - Jul 1, 18:15 UTCJul 1, 18:40 UTC25m
2026-07-01 CHH7203 - Jul 1, 11:25 UTCJul 1, 15:00 UTC3h 35m
2026-07-01 CHH7432 - Jul 1, 05:50 UTCJul 1, 06:00 UTC10m
2026-06-30 CHH7204 - Jun 30, 14:15 UTCJun 30, 14:30 UTC15m
2026-06-29 CHH7206 - Jun 29, 17:05 UTCJun 29, 17:14 UTC10m
2026-06-27 CHH7807 - Jun 27, 04:59 UTCJun 27, 05:15 UTC15m
2026-06-25 CHH7360 KWE → SYX Jun 25, 23:24 UTCJun 26, 09:45 UTC10h 20m
2026-06-25 CHH7360 KWE → SYX Jun 25, 14:55 UTCJun 26, 09:45 UTC18h 50m
2026-06-25 CHH7383 - Jun 25, 09:20 UTCJun 26, 09:14 UTC23h 55m
2026-06-25 CHH7304 TFU → SYX Jun 25, 05:29 UTCJun 26, 00:05 UTC18h 35m
2026-06-25 CHH7303 SYX → TFU Jun 25, 00:55 UTCJun 25, 14:59 UTC14h 5m
2026-06-24 CHH7303 SYX → TFU Jun 24, 14:20 UTCJun 25, 10:04 UTC19h 45m
2026-06-24 CHH7303 SYX → TFU Jun 24, 09:55 UTCJun 25, 05:50 UTC19h 55m
2026-06-24 CHH7303 SYX → TFU Jun 24, 06:39 UTCJun 25, 01:24 UTC18h 45m
2026-06-24 CHH7390 HGH → SZX Jun 24, 00:30 UTCJun 24, 14:55 UTC14h 25m
2026-06-23 CHH7579 PEK → SYX Jun 23, 13:29 UTCJun 23, 16:29 UTC3h 0m
2026-06-22 CHH7304 TFU → SYX Jun 22, 15:20 UTCJun 23, 08:59 UTC17h 40m
2026-06-21 CHH7151 - Jun 21, 01:25 UTCJun 21, 01:35 UTC10m
2026-06-20 CHH7204 SZX → TSN Jun 20, 09:54 UTCJun 20, 13:14 UTC3h 20m
2026-06-18 CHH7203 - Jun 18, 08:15 UTCJun 18, 08:25 UTC10m
2026-06-17 CHH7940 - Jun 17, 04:35 UTCJun 17, 06:10 UTC1h 35m
2026-06-16 CHH7939 - Jun 16, 07:20 UTCJun 17, 02:25 UTC19h 6m
2026-06-14 CHH7384 HGH → SYX Jun 14, 15:15 UTCJun 15, 07:05 UTC15h 49m
2026-06-14 CHH7384 HGH → SYX Jun 14, 06:45 UTCJun 15, 01:00 UTC18h 14m
2026-06-14 CHH7384 HGH → SYX Jun 14, 00:25 UTCJun 14, 16:00 UTC15h 35m
2026-06-13 CHH7564 CGO → SYX Jun 13, 12:55 UTCJun 14, 07:10 UTC18h 15m
2026-06-13 CHH7564 CGO → SYX Jun 13, 07:20 UTCJun 14, 07:10 UTC23h 50m
2026-06-13 CHH7564 CGO → SYX Jun 13, 02:30 UTCJun 14, 00:30 UTC21h 59m
2026-06-12 CHH7204 SZX → TSN Jun 12, 11:05 UTCJun 12, 14:05 UTC3h 0m
2026-06-11 CHH7204 SZX → TSN Jun 11, 17:35 UTCJun 11, 17:45 UTC10m
2026-06-11 CHH7203 TSN → SZX Jun 11, 10:00 UTCJun 11, 13:55 UTC3h 55m
2026-06-10 CHH7004 CAN → HAK Jun 10, 23:55 UTCJun 11, 00:10 UTC15m
2026-06-09 CHH7204 SZX → TSN Jun 9, 20:25 UTCJun 9, 20:40 UTC15m
2026-06-09 CHH7204 SZX → TSN Jun 9, 11:15 UTCJun 9, 14:00 UTC2h 45m
2026-06-09 CHH7432 PVG → CAN Jun 9, 04:35 UTCJun 9, 04:45 UTC10m
2026-06-08 CHH7431 CAN → PVG Jun 8, 23:30 UTCJun 9, 00:05 UTC35m

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

Mode-S 78239D frequently asked

What is Mode-S code 78239D?
78239D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32QG.
Where is Mode-S 78239D registered?
Mode-S code 78239D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78239D broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78239D, octal 36021635, decimal 7,873,437.
What flights does 78239D operate?
Mode-S 78239D has broadcast 20 distinct callsigns, including CHH7204, CHH7203, CHH7303, CHH7564, CHH7384.