Apparatus

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sensors Mode-S transponder

782428

ICAO 24-bit transponder address · allocated to China

Hex
782428
Octal
36022050
Decimal
7,873,576
Country
CN
No current signal · last broadcast Jul 26, 08:25 UTC
Flights observed
102
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 08:25 UTC

Last known position

Most recent position reported by Mode-S 782428.

Country allocation

The ICAO 24-bit address 782428 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
CHH7135 - 9 2026-06-30
CHH7112 - 9 2026-06-30
CHH7056 Hainan Airlines 6 2026-07-25
CHH7204 Hainan Airlines 5 2026-07-19
CHH7203 Hainan Airlines 5 2026-07-19
CHH7198 Hainan Airlines 5 2026-06-13
CHH7197 Hainan Airlines 5 2026-06-12
CHH7940 - 4 2026-07-06
CHH7939 - 3 2026-07-05
CHH7579 - 3 2026-07-11
CHH7384 - 3 2026-07-10
CHH7347 Hainan Airlines 3 2026-06-13
CHH7280 - 3 2026-07-09
CHH721 - 3 2026-07-05
CHH7136 - 3 2026-06-27
CHH7111 - 3 2026-06-29
CHH7055 Hainan Airlines 3 2026-07-22
CHH7448 Hainan Airlines 2 2026-06-12
CHH7447 - 2 2026-06-20
CHH722 - 2 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CHH7056 HGH → HAK Jul 25, 14:50 UTCJul 26, 08:25 UTC17h 36m
2026-07-25 CHH7052 HGH → HAK Jul 25, 05:45 UTCJul 26, 01:50 UTC20h 5m
2026-07-25 CHH7052 HGH → HAK Jul 25, 01:30 UTCJul 25, 14:55 UTC13h 25m
2026-07-24 CHH7056 HGH → HAK Jul 24, 14:20 UTCJul 25, 06:00 UTC15h 40m
2026-07-24 CHH7056 HGH → HAK Jul 24, 05:40 UTCJul 25, 01:40 UTC20h 0m
2026-07-24 CHH7056 HGH → HAK Jul 24, 01:15 UTCJul 24, 15:10 UTC13h 55m
2026-07-23 CHH7056 HGH → HAK Jul 23, 05:40 UTCJul 23, 14:40 UTC9h 0m
2026-07-22 CHH7056 HGH → HAK Jul 22, 15:45 UTCJul 23, 14:00 UTC22h 15m
2026-07-22 CHH7055 HAK → HGH Jul 22, 12:05 UTCJul 23, 08:45 UTC20h 40m
2026-07-22 CHH7055 HAK → HGH Jul 22, 11:15 UTCJul 23, 08:45 UTC21h 30m
2026-07-22 CHH7055 HAK → HGH Jul 22, 01:20 UTCJul 22, 15:50 UTC14h 30m
2026-07-20 CHH7002 - Jul 20, 23:10 UTCJul 20, 23:25 UTC15m
2026-07-20 CHH7807 - Jul 20, 04:40 UTCJul 20, 05:00 UTC20m
2026-07-19 CHH7204 SZX → TSN Jul 19, 17:55 UTCJul 19, 18:05 UTC10m
2026-07-19 CHH7204 SZX → TSN Jul 19, 10:30 UTCJul 19, 13:40 UTC3h 10m
2026-07-19 CHH7203 TSN → SZX Jul 19, 06:45 UTCJul 19, 06:55 UTC10m
2026-07-18 CHH7204 - Jul 18, 12:00 UTCJul 18, 15:10 UTC3h 10m
2026-07-18 - - Jul 18, 04:45 UTCJul 18, 04:55 UTC10m
2026-07-17 CHH7203 - Jul 17, 11:20 UTCJul 17, 14:24 UTC3h 5m
2026-07-17 CHH7203 - Jul 17, 07:20 UTCJul 17, 07:30 UTC10m
2026-07-16 CHH7203 - Jul 16, 09:45 UTCJul 16, 13:10 UTC3h 25m
2026-07-15 CHH7204 - Jul 15, 13:20 UTCJul 15, 13:30 UTC10m
2026-07-15 CHH7203 - Jul 15, 10:15 UTCJul 15, 10:25 UTC10m
2026-07-14 CHH7204 - Jul 14, 09:50 UTCJul 14, 13:15 UTC3h 25m
2026-07-11 CHH7306 - Jul 11, 21:25 UTCJul 12, 14:40 UTC17h 15m
2026-07-11 CHH7579 - Jul 11, 18:35 UTCJul 12, 14:40 UTC20h 5m
2026-07-10 CHH7384 - Jul 10, 14:35 UTCJul 11, 09:00 UTC18h 25m
2026-07-10 CHH7384 - Jul 10, 10:05 UTCJul 11, 09:00 UTC22h 55m
2026-07-10 CHH7384 - Jul 10, 09:50 UTCJul 11, 05:50 UTC20h 0m
2026-07-09 CHH7579 - Jul 9, 13:25 UTCJul 10, 10:05 UTC20h 40m
2026-07-09 CHH7280 - Jul 9, 11:35 UTCJul 9, 11:45 UTC10m
2026-07-08 CHH7579 - Jul 8, 13:30 UTCJul 8, 16:25 UTC2h 55m
2026-07-08 CHH7280 - Jul 8, 12:00 UTCJul 8, 12:10 UTC10m
2026-07-07 CHH7280 - Jul 7, 23:55 UTCJul 8, 09:05 UTC9h 10m
2026-07-06 CHH7940 - Jul 6, 04:15 UTCJul 6, 13:40 UTC9h 25m
2026-07-05 CHH7939 - Jul 5, 12:30 UTCJul 6, 02:55 UTC14h 25m
2026-07-05 CHH721 - Jul 5, 09:25 UTCJul 5, 11:05 UTC1h 40m
2026-07-05 CHH7940 - Jul 5, 04:10 UTCJul 5, 05:00 UTC50m
2026-07-05 CHH7939 - Jul 5, 01:15 UTCJul 5, 02:45 UTC1h 30m
2026-07-04 CHH7939 - Jul 4, 06:40 UTCJul 5, 02:45 UTC20h 5m
2026-07-03 CHH722 - Jul 3, 12:40 UTCJul 4, 06:50 UTC18h 10m
2026-07-03 CHH721 - Jul 3, 09:30 UTCJul 3, 10:55 UTC1h 25m
2026-07-03 CHH7940 - Jul 3, 04:35 UTCJul 3, 06:20 UTC1h 45m
2026-07-02 CHH722 - Jul 2, 12:35 UTCJul 3, 02:15 UTC13h 40m
2026-07-02 CHH721 - Jul 2, 09:05 UTCJul 2, 10:45 UTC1h 40m
2026-07-02 CHH7940 - Jul 2, 04:30 UTCJul 2, 05:00 UTC30m
2026-07-01 CHH7582 - Jul 1, 08:20 UTCJul 2, 01:35 UTC17h 15m
2026-06-30 CHH7135 - Jun 30, 23:35 UTCJun 30, 23:55 UTC20m
2026-06-30 CHH7112 - Jun 30, 08:20 UTCJun 30, 16:10 UTC7h 50m
2026-06-29 CHH7135 - Jun 29, 23:25 UTCJun 29, 23:44 UTC20m

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.

Mode-S 782428 frequently asked

What is Mode-S code 782428?
782428 is an ICAO 24-bit transponder address. Allocated to China.
Where is Mode-S 782428 registered?
Mode-S code 782428 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 782428 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 08:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 782428, octal 36022050, decimal 7,873,576.
What flights does 782428 operate?
Mode-S 782428 has broadcast 20 distinct callsigns, including CHH7135, CHH7112, CHH7056, CHH7204, CHH7203.