Apparatus

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sensors Mode-S transponder

78242F

ICAO 24-bit transponder address · allocated to China

Hex
78242F
Octal
36022057
Decimal
7,873,583
Country
CN
No current signal · last broadcast 3d ago
Flights observed
72
Distinct callsigns
20
Country
CN
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 78242F.

Country allocation

The ICAO 24-bit address 78242F 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
CHH7777 - 6 2026-07-14
CHH430 Hainan Airlines 5 2026-07-19
CHH6384 Hainan Airlines 4 2026-07-26
BOE192 - 4 2026-06-15
CHH7996 Hainan Airlines 3 2026-07-23
CHH7995 Hainan Airlines 3 2026-07-23
CHH7138 - 3 2026-07-07
CHH7137 - 3 2026-07-11
CHH429 Hainan Airlines 3 2026-07-19
CHH7613 - 2 2026-07-15
CHH7347 - 2 2026-07-15
CHH7198 - 2 2026-07-14
CHH7197 - 2 2026-07-13
CHH6383 Hainan Airlines 2 2026-07-25
CHH6375 Hainan Airlines 2 2026-07-26
CHH2285 - 2 2026-06-19
CHH7808 - 1 2026-07-17
CHH7801 - 1 2026-07-17
CHH7778 - 1 2026-07-07
CHH7688 - 1 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHH6375 PEK → WUH Jul 26, 10:20 UTCJul 26, 10:30 UTC10m
2026-07-26 CHH6384 XIY → PEK Jul 26, 02:30 UTCJul 26, 07:40 UTC5h 11m
2026-07-25 CHH7267 PEK → CKG Jul 25, 09:50 UTCJul 25, 10:00 UTC10m
2026-07-25 CHH6384 XIY → PEK Jul 25, 07:25 UTCJul 25, 07:50 UTC25m
2026-07-25 CHH6383 PEK → XIY Jul 25, 02:05 UTCJul 25, 02:35 UTC30m
2026-07-24 CHH7436 - Jul 24, 15:35 UTCJul 24, 16:05 UTC30m
2026-07-24 CHH7435 HGH → HET Jul 24, 09:20 UTCJul 24, 10:05 UTC45m
2026-07-24 CHH6356 CSX → PEK Jul 24, 06:15 UTCJul 24, 06:35 UTC20m
2026-07-24 CHH6355 PEK → CSX Jul 24, 01:30 UTCJul 24, 01:45 UTC15m
2026-07-23 CHH7996 BKK → PEK Jul 23, 17:55 UTCJul 23, 19:35 UTC1h 40m
2026-07-23 CHH7995 PEK → BKK Jul 23, 11:35 UTCJul 23, 16:10 UTC4h 35m
2026-07-23 CHH6384 XIY → PEK Jul 23, 07:35 UTCJul 23, 08:00 UTC25m
2026-07-23 CHH6383 PEK → XIY Jul 23, 02:10 UTCJul 23, 02:25 UTC15m
2026-07-22 CHH6267 - Jul 22, 12:55 UTCJul 22, 13:15 UTC20m
2026-07-22 CHH7237 PEK → XIY Jul 22, 03:30 UTCJul 22, 03:50 UTC20m
2026-07-19 CHH7367 - Jul 19, 13:35 UTCJul 19, 14:00 UTC25m
2026-07-19 CHH430 BKK → PEK Jul 19, 11:15 UTCJul 19, 11:30 UTC15m
2026-07-19 CHH430 BKK → PEK Jul 19, 08:25 UTCJul 19, 08:35 UTC10m
2026-07-19 CHH430 BKK → PEK Jul 19, 07:00 UTCJul 19, 07:10 UTC10m
2026-07-19 CHH429 PEK → BKK Jul 19, 04:30 UTCJul 19, 04:40 UTC10m
2026-07-19 CHH429 PEK → BKK Jul 19, 00:25 UTCJul 19, 03:35 UTC3h 10m
2026-07-18 CHH6375 - Jul 18, 11:10 UTCJul 18, 11:25 UTC15m
2026-07-18 CHH6384 - Jul 18, 02:05 UTCJul 18, 08:10 UTC6h 6m
2026-07-17 CHH7996 - Jul 17, 19:05 UTCJul 17, 19:20 UTC15m
2026-07-17 CHH7996 - Jul 17, 17:44 UTCJul 17, 18:00 UTC15m
2026-07-17 CHH7995 - Jul 17, 15:29 UTCJul 17, 15:44 UTC15m
2026-07-17 CHH7995 - Jul 17, 11:25 UTCJul 17, 14:24 UTC3h 0m
2026-07-17 CHH7808 - Jul 17, 08:15 UTCJul 17, 08:25 UTC10m
2026-07-17 CHH7801 - Jul 17, 01:15 UTCJul 17, 01:39 UTC25m
2026-07-16 CHH6362 - Jul 16, 12:00 UTCJul 16, 12:25 UTC25m
2026-07-16 CHH6361 - Jul 16, 07:30 UTCJul 16, 07:55 UTC25m
2026-07-15 CHH7613 - Jul 15, 23:45 UTCJul 16, 00:00 UTC15m
2026-07-15 CHH7347 - Jul 15, 07:15 UTCJul 15, 07:30 UTC15m
2026-07-14 CHH7613 - Jul 14, 23:45 UTCJul 14, 23:55 UTC10m
2026-07-14 CHH7777 - Jul 14, 06:20 UTCJul 14, 06:40 UTC20m
2026-07-14 CHH7198 - Jul 14, 03:40 UTCJul 14, 04:00 UTC20m
2026-07-13 CHH7197 - Jul 13, 23:05 UTCJul 13, 23:30 UTC25m
2026-07-13 CHH7777 - Jul 13, 06:15 UTCJul 13, 06:35 UTC20m
2026-07-12 CHH7185 - Jul 12, 23:25 UTCJul 12, 23:45 UTC20m
2026-07-11 CHH7137 - Jul 11, 23:05 UTCJul 11, 23:30 UTC25m
2026-07-11 CHH7448 - Jul 11, 13:55 UTCJul 11, 14:15 UTC20m
2026-07-11 CHH7347 - Jul 11, 06:45 UTCJul 11, 07:05 UTC20m
2026-07-10 CHH430 - Jul 10, 08:35 UTCJul 10, 08:45 UTC10m
2026-07-10 CHH430 - Jul 10, 07:10 UTCJul 10, 07:25 UTC15m
2026-07-10 CHH429 - Jul 10, 00:30 UTCJul 10, 04:45 UTC4h 15m
2026-07-09 CHH7277 - Jul 9, 00:20 UTCJul 9, 00:35 UTC15m
2026-07-08 CHH7777 - Jul 8, 06:20 UTCJul 8, 09:15 UTC2h 55m
2026-07-07 CHH7138 - Jul 7, 23:05 UTCJul 8, 04:10 UTC5h 5m
2026-07-07 CHH7778 - Jul 7, 16:10 UTCJul 7, 16:35 UTC25m
2026-07-07 CHH7138 - Jul 7, 03:45 UTCJul 7, 04:15 UTC30m

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 78242F frequently asked

What is Mode-S code 78242F?
78242F is an ICAO 24-bit transponder address. Allocated to China.
Where is Mode-S 78242F registered?
Mode-S code 78242F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78242F broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78242F, octal 36022057, decimal 7,873,583.
What flights does 78242F operate?
Mode-S 78242F has broadcast 20 distinct callsigns, including CHH7777, CHH430, CHH6384, BOE192, CHH7996.