Apparatus

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sensors Mode-S transponder

78141D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1142 · BOEING 737 MAX 8

Hex
78141D
Octal
36012035
Decimal
7,869,469
Country
CN
Tail
B-1142
Type
B38M
No current signal · last broadcast 5h ago
Flights observed
71
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 78141D.

Country allocation

The ICAO 24-bit address 78141D 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
CHH447 Hainan Airlines 8 2026-05-29
CHH748 Hainan Airlines 5 2026-05-28
CHH7996 Hainan Airlines 4 2026-05-09
CHH7995 Hainan Airlines 4 2026-05-09
CHH7909 Hainan Airlines 4 2026-05-26
CHH747 Hainan Airlines 4 2026-05-28
CHH474 Hainan Airlines 4 2026-05-09
CHH473 Hainan Airlines 4 2026-05-09
CHH7910 Hainan Airlines 3 2026-05-29
CHH7567 Hainan Airlines 3 2026-05-07
CHH7066 Hainan Airlines 3 2026-04-29
CHH791 Hainan Airlines 2 2026-05-18
CHH756 Hainan Airlines 2 2026-04-17
CHH755 Hainan Airlines 2 2026-04-17
CHH701 Hainan Airlines 2 2026-04-16
CHH448 Hainan Airlines 2 2026-05-24
CHH792 Hainan Airlines 1 2026-05-18
CHH7777 Hainan Airlines 1 2026-05-08
CHH7614 Hainan Airlines 1 2026-04-30
CHH7613 Hainan Airlines 1 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CHH7910 SIN → HAK May 29, 20:50 UTCMay 29, 23:50 UTC3h 0m
2026-05-29 CHH447 HAK → SYD May 29, 18:25 UTCMay 29, 18:35 UTC10m
2026-05-29 CHH447 HAK → SYD May 29, 06:05 UTCMay 29, 13:15 UTC7h 10m
2026-05-28 CHH447 HAK → SYD May 28, 12:00 UTCMay 29, 10:40 UTC22h 40m
2026-05-28 CHH748 SIN → HAK May 28, 04:15 UTCMay 28, 07:10 UTC2h 55m
2026-05-28 CHH747 HAK → SIN May 28, 02:15 UTCMay 28, 02:25 UTC10m
2026-05-26 CHH447 HAK → SYD May 26, 21:04 UTCMay 27, 13:40 UTC16h 35m
2026-05-26 CHH7909 HAK → SIN May 26, 18:45 UTCMay 26, 18:55 UTC10m
2026-05-25 CHH7910 SIN → HAK May 25, 20:50 UTCMay 25, 21:04 UTC15m
2026-05-25 CHH447 HAK → SYD May 25, 18:35 UTCMay 25, 19:05 UTC30m
2026-05-24 CHH448 HAK → TYN May 24, 20:55 UTCMay 25, 10:45 UTC13h 50m
2026-05-24 CHH447 HAK → SYD May 24, 18:15 UTCMay 24, 18:40 UTC25m
2026-05-23 CHH447 HAK → SYD May 23, 20:55 UTCMay 24, 18:40 UTC21h 45m
2026-05-23 CHH7909 HAK → SIN May 23, 18:10 UTCMay 23, 18:40 UTC30m
2026-05-22 CHH7909 HAK → SIN May 22, 20:55 UTCMay 23, 18:40 UTC21h 45m
2026-05-22 CHH447 HAK → SYD May 22, 18:20 UTCMay 22, 18:55 UTC35m
2026-05-21 CHH748 SIN → HAK May 21, 04:20 UTCMay 21, 04:50 UTC30m
2026-05-19 CHH448 HAK → TYN May 19, 20:50 UTCMay 20, 10:55 UTC14h 6m
2026-05-19 CHH7909 HAK → SIN May 19, 18:15 UTCMay 19, 18:25 UTC10m
2026-05-18 CHH7910 SIN → HAK May 18, 20:50 UTCMay 18, 21:05 UTC15m
2026-05-18 CHH792 NRT → HAK May 18, 06:25 UTCMay 18, 19:00 UTC12h 34m
2026-05-18 CHH791 HAK → NRT May 18, 00:10 UTCMay 18, 04:30 UTC4h 20m
2026-05-17 CHH791 HAK → NRT May 17, 04:10 UTCMay 18, 03:15 UTC23h 5m
2026-05-17 CHH747 HAK → SIN May 17, 02:10 UTCMay 17, 02:30 UTC20m
2026-05-16 CHH748 SIN → HAK May 16, 04:50 UTCMay 17, 02:30 UTC21h 40m
2026-05-09 CHH7996 BKK → PEK May 9, 17:45 UTCMay 9, 18:35 UTC50m
2026-05-09 CHH7995 PEK → BKK May 9, 10:50 UTCMay 9, 15:30 UTC4h 40m
2026-05-09 CHH474 KIX → PEK May 9, 05:45 UTCMay 9, 07:15 UTC1h 30m
2026-05-09 CHH473 PEK → KIX May 9, 02:00 UTCMay 9, 03:25 UTC1h 25m
2026-05-08 CHH7777 PEK → BAR May 8, 06:09 UTCMay 8, 06:25 UTC15m
2026-05-07 CHH7567 PEK → CKG May 7, 11:10 UTCMay 7, 11:25 UTC15m
2026-05-05 CHH7567 PEK → CKG May 5, 11:15 UTCMay 5, 11:30 UTC15m
2026-05-04 CHH7188 WUH → PEK May 4, 12:45 UTCMay 4, 12:55 UTC10m
2026-05-02 CHH7567 PEK → CKG May 2, 11:05 UTCMay 2, 11:25 UTC20m
2026-05-01 CHH7367 PEK → CKG May 1, 13:40 UTCMay 1, 13:55 UTC15m
2026-05-01 CHH6016 - May 1, 11:15 UTCMay 1, 11:25 UTC10m
2026-05-01 CHH7198 LHW → PEK May 1, 03:35 UTCMay 1, 03:55 UTC20m
2026-04-30 CHH7197 PEK → LHW Apr 30, 23:05 UTCApr 30, 23:30 UTC25m
2026-04-30 CHH6014 WUH → PEK Apr 30, 14:05 UTCApr 30, 14:15 UTC10m
2026-04-30 CHH6013 - Apr 30, 08:40 UTCApr 30, 08:55 UTC15m
2026-04-30 CHH7614 PVG → PEK Apr 30, 05:15 UTCApr 30, 05:25 UTC10m
2026-04-29 CHH7613 PEK → PVG Apr 29, 23:50 UTCApr 30, 00:00 UTC10m
2026-04-29 CHH7066 WUH → HAK Apr 29, 00:45 UTCApr 29, 07:35 UTC6h 50m
2026-04-28 CHH7996 BKK → PEK Apr 28, 17:35 UTCApr 28, 17:50 UTC15m
2026-04-28 CHH7995 PEK → BKK Apr 28, 11:05 UTCApr 28, 15:55 UTC4h 50m
2026-04-28 CHH7189 PEK → KWE Apr 28, 00:40 UTCApr 28, 00:55 UTC15m
2026-04-27 CHH7066 WUH → HAK Apr 27, 00:45 UTCApr 27, 05:35 UTC4h 50m
2026-04-26 CHH7996 BKK → PEK Apr 26, 17:45 UTCApr 26, 18:00 UTC15m
2026-04-26 CHH7995 PEK → BKK Apr 26, 15:40 UTCApr 26, 16:00 UTC20m
2026-04-26 CHH474 KIX → PEK Apr 26, 05:45 UTCApr 26, 07:10 UTC1h 25m

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-1142 page for operator, model, and routing details .

Mode-S 78141D frequently asked

What is Mode-S code 78141D?
78141D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1142.
Where is Mode-S 78141D registered?
Mode-S code 78141D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78141D broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78141D, octal 36012035, decimal 7,869,469.
What flights does 78141D operate?
Mode-S 78141D has broadcast 20 distinct callsigns, including CHH447, CHH748, CHH7996, CHH7995, CHH7909.