Apparatus

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sensors Mode-S transponder

78141C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1141 · BOEING 737-800

Hex
78141C
Octal
36012034
Decimal
7,869,468
Country
CN
Tail
B-1141
Type
B738
No current signal · last broadcast Jul 26, 11:45 UTC
Flights observed
78
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 11:45 UTC

Last known position

Most recent position reported by Mode-S 78141C.

Country allocation

The ICAO 24-bit address 78141C 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
CHH7644 - 6 2026-07-18
CHH7638 Hainan Airlines 4 2026-05-04
CHH7648 - 3 2026-07-14
CHH7103 - 3 2026-07-22
CHH7698 - 2 2026-07-10
CHH7632 - 2 2026-07-12
CHH7535 - 2 2026-07-21
CHH7376 Hainan Airlines 2 2026-06-11
CHH7210 - 2 2026-07-06
CHH7048 - 2 2026-06-21
CHH6359 - 2 2026-07-20
CHH7883 - 1 2026-07-20
CHH7872 Hainan Airlines 1 2026-05-21
CHH7852 Hainan Airlines 1 2026-06-10
CHH7834 Hainan Airlines 1 2026-05-27
CHH7833 Hainan Airlines 1 2026-05-27
CHH7809 - 1 2026-07-17
CHH7752 Hainan Airlines 1 2026-05-23
CHH7751 Hainan Airlines 1 2026-05-22
CHH7750 Hainan Airlines 1 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHH7279 PEK → SYX Jul 26, 05:20 UTCJul 26, 11:45 UTC6h 26m
2026-07-26 CHH7186 YIH → PEK Jul 26, 03:30 UTCJul 26, 03:45 UTC15m
2026-07-25 CHH7185 PEK → YIH Jul 25, 22:55 UTCJul 25, 23:15 UTC20m
2026-07-25 CHH7645 - Jul 25, 11:30 UTCJul 25, 11:45 UTC15m
2026-07-25 CHH6216 NNG → PEK Jul 25, 09:35 UTCJul 25, 09:45 UTC10m
2026-07-25 CHH6215 PEK → NNG Jul 25, 02:25 UTCJul 25, 02:55 UTC30m
2026-07-24 CHH7582 PEK → HAK Jul 24, 08:15 UTCJul 24, 16:10 UTC7h 55m
2026-07-24 CHH7613 PEK → PVG Jul 24, 00:00 UTCJul 24, 00:15 UTC15m
2026-07-22 CHH7103 - Jul 22, 15:45 UTCJul 22, 15:55 UTC10m
2026-07-21 CHH7535 - Jul 21, 15:35 UTCJul 21, 15:55 UTC20m
2026-07-21 CHH6218 - Jul 21, 13:50 UTCJul 21, 14:00 UTC10m
2026-07-21 CHH6217 - Jul 21, 07:40 UTCJul 21, 07:55 UTC15m
2026-07-20 CHH6359 - Jul 20, 23:20 UTCJul 20, 23:30 UTC10m
2026-07-20 CHH7612 PVG → PEK Jul 20, 16:40 UTCJul 20, 16:50 UTC10m
2026-07-20 CHH7883 - Jul 20, 00:05 UTCJul 20, 00:25 UTC20m
2026-07-19 CHH6375 - Jul 19, 10:05 UTCJul 19, 10:20 UTC15m
2026-07-19 CHH6355 - Jul 19, 01:30 UTCJul 19, 01:45 UTC15m
2026-07-18 CHH7644 - Jul 18, 09:05 UTCJul 18, 09:15 UTC10m
2026-07-17 CHH7809 - Jul 17, 06:54 UTCJul 17, 07:05 UTC10m
2026-07-16 CHH6359 - Jul 16, 23:15 UTCJul 16, 23:25 UTC10m
2026-07-15 CHH7070 - Jul 15, 04:55 UTCJul 15, 15:50 UTC10h 55m
2026-07-14 CHH7648 - Jul 14, 11:25 UTCJul 15, 09:25 UTC21h 59m
2026-07-12 CHH7632 - Jul 12, 05:05 UTCJul 12, 05:15 UTC10m
2026-07-11 CHH7632 - Jul 11, 05:10 UTCJul 11, 05:25 UTC15m
2026-07-10 CHH7698 - Jul 10, 05:40 UTCJul 10, 05:50 UTC10m
2026-07-08 CHH7011 HAK → CAN Jul 8, 15:10 UTCJul 8, 15:20 UTC10m
2026-07-08 CHH7370 - Jul 8, 04:40 UTCJul 8, 11:45 UTC7h 5m
2026-07-07 CHH7648 - Jul 7, 11:10 UTCJul 8, 05:00 UTC17h 50m
2026-07-07 CHH7648 - Jul 7, 08:00 UTCJul 8, 05:00 UTC21h 0m
2026-07-06 CHH7210 - Jul 6, 09:55 UTCJul 7, 08:05 UTC22h 10m
2026-07-05 CHH7210 - Jul 5, 15:15 UTCJul 6, 10:20 UTC19h 5m
2026-07-05 CHH7079 - Jul 5, 00:50 UTCJul 5, 01:05 UTC15m
2026-07-04 CHH7536 - Jul 4, 16:50 UTCJul 4, 17:05 UTC15m
2026-06-24 CHH7377 PEK → HGH Jun 24, 15:35 UTCJun 24, 15:44 UTC10m
2026-06-24 CHH7188 WUH → PEK Jun 24, 12:34 UTCJun 24, 12:44 UTC10m
2026-06-24 CHH7187 - Jun 24, 00:44 UTCJun 24, 01:04 UTC20m
2026-06-21 CHH7048 - Jun 21, 12:14 UTCJun 21, 12:40 UTC25m
2026-06-21 CHH7048 - Jun 21, 09:24 UTCJun 21, 09:49 UTC25m
2026-06-21 CHH7047 - Jun 21, 03:00 UTCJun 21, 08:10 UTC5h 10m
2026-06-20 CHH7654 JUH → TYN Jun 20, 09:09 UTCJun 21, 00:29 UTC15h 20m
2026-06-15 CHH7365 - Jun 15, 13:15 UTCJun 15, 13:30 UTC15m
2026-06-13 CHH7721 SZX → PVG Jun 13, 01:30 UTCJun 13, 01:40 UTC10m
2026-06-12 CHH7023 SYX → NKG Jun 12, 23:55 UTCJun 13, 00:10 UTC15m
2026-06-11 CHH7026 SZX → HAK Jun 11, 13:40 UTCJun 11, 13:55 UTC15m
2026-06-11 CHH7376 TFU → SZX Jun 11, 10:30 UTCJun 11, 10:45 UTC15m
2026-06-11 CHH7375 SZX → TFU Jun 11, 05:15 UTCJun 11, 05:25 UTC10m
2026-06-10 CHH7737 SZX → NNY Jun 10, 23:00 UTCJun 10, 23:15 UTC15m
2026-06-10 CHH7852 URC → SZX Jun 10, 15:25 UTCJun 10, 15:35 UTC10m
2026-05-27 CHH7834 TSN → URC May 27, 13:40 UTCMay 27, 13:55 UTC15m
2026-05-27 CHH7833 URC → TSN May 27, 11:35 UTCMay 27, 11:50 UTC15m

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-1141 page for operator, model, and routing details .

Mode-S 78141C frequently asked

What is Mode-S code 78141C?
78141C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1141.
Where is Mode-S 78141C registered?
Mode-S code 78141C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78141C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78141C, octal 36012034, decimal 7,869,468.
What flights does 78141C operate?
Mode-S 78141C has broadcast 20 distinct callsigns, including CHH7644, CHH7638, CHH7648, CHH7103, CHH7698.