Apparatus

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sensors Mode-S transponder

78000A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6103 · BOEING 737-800

Hex
78000A
Octal
36000012
Decimal
7,864,330
Country
CN
Tail
B-6103
Type
B738
No current signal · last broadcast 1d ago
Flights observed
97
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 78000A.

Country allocation

The ICAO 24-bit address 78000A 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
CHH7322 - 10 2026-07-11
CHH7987 - 5 2026-06-15
CHH7988 - 4 2026-06-15
CHH7370 - 3 2026-05-03
CHH7745 - 2 2026-05-22
CHH7713 Hainan Airlines 2 2026-05-20
CHH7547 - 2 2026-06-30
CHH7291 - 2 2026-06-29
CHH720 Hainan Airlines 2 2026-06-03
CHH7120 Hainan Airlines 2 2026-05-14
CHH7070 Hainan Airlines 2 2026-05-17
CHH706 Hainan Airlines 2 2026-06-03
CHH705 Hainan Airlines 2 2026-06-03
CHH7869 - 1 2026-07-09
CHH7803 - 1 2026-07-04
CHH7801 Hainan Airlines 1 2026-06-08
CHH7777 Hainan Airlines 1 2026-06-06
CHH7767 Hainan Airlines 1 2026-05-19
CHH7765 Hainan Airlines 1 2026-04-18
CHH7763 Hainan Airlines 1 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CHH7475 - Jul 13, 08:01 UTCJul 13, 08:10 UTC10m
2026-07-11 CHH7322 - Jul 11, 00:35 UTCJul 11, 00:50 UTC15m
2026-07-10 CHH7725 - Jul 10, 05:05 UTCJul 10, 05:15 UTC10m
2026-07-09 CHH7759 - Jul 9, 10:35 UTCJul 9, 10:55 UTC20m
2026-07-09 CHH7869 - Jul 9, 06:05 UTCJul 9, 06:15 UTC10m
2026-07-08 CHH7137 - Jul 8, 23:05 UTCJul 8, 23:25 UTC20m
2026-07-07 CHH6394 - Jul 7, 17:00 UTCJul 7, 17:10 UTC10m
2026-07-06 CHH7744 - Jul 6, 16:40 UTCJul 6, 16:50 UTC10m
2026-07-06 CHH7743 NGB → CGQ Jul 6, 00:45 UTCJul 6, 00:55 UTC10m
2026-07-05 CHH7748 TYN → SZX Jul 5, 17:35 UTCJul 5, 18:00 UTC25m
2026-07-05 CHH7747 - Jul 5, 09:15 UTCJul 5, 09:25 UTC10m
2026-07-05 CHH7175 - Jul 5, 02:15 UTCJul 5, 02:25 UTC10m
2026-07-04 CHH7021 - Jul 4, 23:10 UTCJul 4, 23:25 UTC15m
2026-07-04 CHH7803 - Jul 4, 01:40 UTCJul 4, 01:55 UTC15m
2026-07-03 CHH7481 - Jul 3, 06:05 UTCJul 3, 06:15 UTC10m
2026-07-02 CHH7369 - Jul 2, 00:25 UTCJul 2, 10:05 UTC9h 40m
2026-07-01 CHH7084 - Jul 1, 02:25 UTCJul 1, 15:20 UTC12h 55m
2026-06-30 CHH7547 - Jun 30, 13:05 UTCJul 1, 02:35 UTC13h 30m
2026-06-30 CHH6215 - Jun 30, 02:35 UTCJun 30, 02:50 UTC15m
2026-06-29 CHH7164 - Jun 29, 05:09 UTCJun 29, 08:50 UTC3h 40m
2026-06-29 CHH7291 - Jun 29, 00:05 UTCJun 29, 00:20 UTC15m
2026-06-28 CHH7638 - Jun 28, 07:34 UTCJun 28, 07:44 UTC10m
2026-06-27 CHH7103 - Jun 27, 15:10 UTCJun 27, 15:19 UTC10m
2026-06-27 CHH7291 - Jun 27, 00:05 UTCJun 27, 05:29 UTC5h 25m
2026-06-20 CHH7322 - Jun 20, 23:29 UTCJun 21, 11:34 UTC12h 5m
2026-06-20 CHH7322 - Jun 20, 04:20 UTCJun 21, 00:45 UTC20h 25m
2026-06-19 CHH7322 - Jun 19, 23:39 UTCJun 20, 04:29 UTC4h 50m
2026-06-19 CHH7322 - Jun 19, 00:49 UTCJun 20, 00:04 UTC23h 15m
2026-06-18 CHH7322 - Jun 18, 23:50 UTCJun 19, 01:04 UTC1h 14m
2026-06-18 CHH7322 - Jun 18, 05:35 UTCJun 19, 01:04 UTC19h 29m
2026-06-18 CHH7322 - Jun 18, 01:20 UTCJun 19, 00:20 UTC22h 59m
2026-06-15 CHH7988 - Jun 15, 05:30 UTCJun 15, 05:55 UTC25m
2026-06-15 CHH7987 - Jun 15, 02:20 UTCJun 15, 03:35 UTC1h 15m
2026-06-11 CHH7322 PVG → SYX Jun 11, 23:45 UTCJun 12, 04:25 UTC4h 41m
2026-06-11 CHH7322 PVG → SYX Jun 11, 00:35 UTCJun 12, 00:15 UTC23h 40m
2026-06-11 CHH7613 PEK → PVG Jun 11, 00:25 UTCJun 11, 00:40 UTC15m
2026-06-10 CHH7247 PEK → TFU Jun 10, 05:15 UTCJun 10, 05:30 UTC15m
2026-06-09 CHH7547 PEK → TFU Jun 9, 12:15 UTCJun 9, 12:30 UTC15m
2026-06-09 CHH440 NRT → PEK Jun 9, 05:30 UTCJun 9, 07:50 UTC2h 20m
2026-06-08 CHH439 PEK → NRT Jun 8, 23:30 UTCJun 9, 02:15 UTC2h 45m
2026-06-08 CHH7134 - Jun 8, 15:25 UTCJun 8, 15:45 UTC20m
2026-06-08 CHH7133 - Jun 8, 12:10 UTCJun 8, 12:35 UTC25m
2026-06-08 CHH7801 PEK → CAN Jun 8, 00:50 UTCJun 8, 01:05 UTC15m
2026-06-07 CHH7125 PEK → DOY Jun 7, 12:20 UTCJun 7, 12:30 UTC10m
2026-06-07 CHH7988 TPE → PEK Jun 7, 05:15 UTCJun 7, 05:35 UTC20m
2026-06-06 CHH7987 PEK → TPE Jun 6, 23:55 UTCJun 7, 02:40 UTC2h 45m
2026-06-06 CHH7777 PEK → BAR Jun 6, 06:10 UTCJun 6, 09:04 UTC2h 55m
2026-06-06 CHH7198 LHW → PEK Jun 6, 03:40 UTCJun 6, 04:00 UTC20m
2026-06-05 CHH7297 CAN → TYN Jun 5, 12:50 UTCJun 5, 13:15 UTC25m
2026-06-05 CHH7238 XIY → PEK Jun 5, 03:15 UTCJun 5, 08:20 UTC5h 5m

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-6103 page for operator, model, and routing details .

Mode-S 78000A frequently asked

What is Mode-S code 78000A?
78000A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6103.
Where is Mode-S 78000A registered?
Mode-S code 78000A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78000A broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78000A, octal 36000012, decimal 7,864,330.
What flights does 78000A operate?
Mode-S 78000A has broadcast 20 distinct callsigns, including CHH7322, CHH7987, CHH7988, CHH7370, CHH7745.