Apparatus

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sensors Mode-S transponder

78140D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1131 · BOEING 737-800

Hex
78140D
Octal
36012015
Decimal
7,869,453
Country
CN
Tail
B-1131
Type
B738
No current signal · last broadcast Jul 26, 15:20 UTC
Flights observed
70
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 15:20 UTC

Last known position

Most recent position reported by Mode-S 78140D.

Country allocation

The ICAO 24-bit address 78140D 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
CHH7698 - 4 2026-07-11
CHH747 Hainan Airlines 4 2026-07-26
CHH7068 Hainan Airlines 4 2026-05-08
CHH7216 Hainan Airlines 3 2026-05-08
CHH7746 - 2 2026-07-07
CHH7741 - 2 2026-07-13
CHH7697 Hainan Airlines 2 2026-05-23
CHH7535 - 2 2026-07-17
CHH748 Hainan Airlines 2 2026-07-26
CHH7319 - 2 2026-06-29
CHH720 - 2 2026-07-02
CHH7067 Hainan Airlines 2 2026-05-07
CHH7988 Hainan Airlines 1 2026-05-18
CHH7987 Hainan Airlines 1 2026-05-18
CHH7872 Hainan Airlines 1 2026-04-19
CHH784 Hainan Airlines 1 2026-07-26
CHH7811 Hainan Airlines 1 2026-05-19
CHH7801 - 1 2026-07-10
CHH7745 - 1 2026-04-16
CHH7743 Hainan Airlines 1 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CHH784 HAN → HAK Jul 26, 15:10 UTCJul 26, 15:20 UTC10m
2026-07-26 CHH748 SIN → HAK Jul 26, 04:15 UTCJul 26, 04:40 UTC25m
2026-07-26 CHH747 HAK → SIN Jul 26, 02:20 UTCJul 26, 02:50 UTC30m
2026-07-24 CHH6370 PEK → HAK Jul 24, 23:45 UTCJul 25, 10:55 UTC11h 10m
2026-07-24 CHH7381 - Jul 24, 04:20 UTCJul 24, 14:10 UTC9h 50m
2026-07-24 CHH747 HAK → SIN Jul 24, 02:35 UTCJul 24, 02:55 UTC20m
2026-07-21 CH748 - Jul 21, 04:40 UTCJul 21, 15:40 UTC11h 0m
2026-07-21 CHH747 HAK → SIN Jul 21, 02:05 UTCJul 21, 02:35 UTC30m
2026-07-17 CHH7535 - Jul 17, 15:29 UTCJul 17, 15:49 UTC20m
2026-07-13 CHH7741 - Jul 13, 03:50 UTCJul 13, 04:00 UTC10m
2026-07-12 CHH7741 - Jul 12, 03:55 UTCJul 12, 04:10 UTC15m
2026-07-12 CHH7742 - Jul 12, 02:05 UTCJul 12, 02:15 UTC10m
2026-07-11 CHH7698 - Jul 11, 05:05 UTCJul 11, 05:20 UTC15m
2026-07-10 CHH7801 - Jul 10, 00:55 UTCJul 10, 01:10 UTC15m
2026-07-09 CHH7130 - Jul 9, 15:35 UTCJul 9, 15:55 UTC20m
2026-07-08 CHH7743 NGB → CGQ Jul 8, 23:05 UTCJul 8, 23:15 UTC10m
2026-07-07 CHH7746 - Jul 7, 20:45 UTCJul 7, 21:10 UTC25m
2026-07-05 CHH7053 - Jul 5, 05:55 UTCJul 6, 01:05 UTC19h 10m
2026-07-03 CHH748 - Jul 3, 04:10 UTCJul 3, 04:30 UTC20m
2026-07-02 CHH747 - Jul 2, 15:50 UTCJul 3, 02:40 UTC10h 50m
2026-07-02 CHH720 - Jul 2, 08:25 UTCJul 2, 08:40 UTC15m
2026-06-30 CHH7653 - Jun 30, 02:20 UTCJun 30, 15:35 UTC13h 15m
2026-06-29 CHH7319 - Jun 29, 09:29 UTCJun 30, 02:40 UTC17h 10m
2026-06-29 CHH7319 - Jun 29, 04:30 UTCJun 29, 12:45 UTC8h 15m
2026-06-20 CHH7664 TAO → WUH Jun 20, 02:29 UTCJun 20, 02:44 UTC15m
2026-06-04 CHH7535 PEK → CSX Jun 4, 15:20 UTCJun 4, 15:35 UTC15m
2026-06-04 CHH7247 PEK → TFU Jun 4, 05:05 UTCJun 4, 05:25 UTC20m
2026-06-03 CHH7547 PEK → TFU Jun 3, 12:10 UTCJun 3, 12:30 UTC20m
2026-06-03 CHH7079 PEK → SYX Jun 3, 00:40 UTCJun 3, 01:00 UTC20m
2026-05-29 CHH7579 PEK → SYX May 29, 13:20 UTCMay 29, 16:15 UTC2h 55m
2026-05-29 CHH7303 SYX → TFU May 29, 01:05 UTCMay 29, 09:05 UTC8h 0m
2026-05-28 CHH7698 NKG → SYX May 28, 05:20 UTCMay 29, 01:10 UTC19h 50m
2026-05-28 CHH7698 NKG → SYX May 28, 05:10 UTCMay 29, 01:10 UTC20h 0m
2026-05-23 CHH7697 SYX → NKG May 23, 05:30 UTCMay 23, 09:20 UTC3h 50m
2026-05-22 CHH7697 SYX → NKG May 22, 09:40 UTCMay 23, 09:15 UTC23h 34m
2026-05-22 CHH7698 NKG → SYX May 22, 05:10 UTCMay 22, 09:45 UTC4h 35m
2026-05-19 CHH7811 PEK → CAN May 19, 08:45 UTCMay 19, 15:25 UTC6h 40m
2026-05-19 CHH7147 PEK → TFU May 19, 00:05 UTCMay 19, 00:20 UTC15m
2026-05-18 CHH7134 - May 18, 16:15 UTCMay 18, 16:30 UTC15m
2026-05-18 CHH7133 - May 18, 12:15 UTCMay 18, 12:40 UTC25m
2026-05-18 CHH7988 TPE → PEK May 18, 05:15 UTCMay 18, 05:50 UTC35m
2026-05-18 CHH7987 PEK → TPE May 18, 00:45 UTCMay 18, 03:30 UTC2h 45m
2026-05-08 CHH7216 NKG → HAK May 8, 15:35 UTCMay 9, 09:35 UTC18h 0m
2026-05-08 CHH7216 NKG → HAK May 8, 12:14 UTCMay 9, 09:35 UTC21h 20m
2026-05-08 CHH7068 HRB → WUH May 8, 07:20 UTCMay 9, 04:40 UTC21h 20m
2026-05-08 CHH7068 HRB → WUH May 8, 07:14 UTCMay 9, 04:40 UTC21h 25m
2026-05-08 CHH7068 HRB → WUH May 8, 02:14 UTCMay 8, 15:45 UTC13h 30m
2026-05-07 CHH7068 HRB → WUH May 7, 14:00 UTCMay 8, 12:14 UTC22h 14m
2026-05-07 CHH7067 HAK → WUH May 7, 02:45 UTCMay 7, 14:15 UTC11h 30m
2026-05-06 CHH7067 HAK → WUH May 6, 14:05 UTCMay 7, 02:55 UTC12h 49m

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-1131 page for operator, model, and routing details .

Mode-S 78140D frequently asked

What is Mode-S code 78140D?
78140D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1131.
Where is Mode-S 78140D registered?
Mode-S code 78140D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78140D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78140D, octal 36012015, decimal 7,869,453.
What flights does 78140D operate?
Mode-S 78140D has broadcast 20 distinct callsigns, including CHH7698, CHH747, CHH7068, CHH7216, CHH7746.