Apparatus

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sensors Mode-S transponder

781B14

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-650R · COMAC ARJ-21-700 Xiangfeng

Hex
781B14
Octal
36015424
Decimal
7,871,252
Country
CN
Tail
B-650R
Type
AJ27
No current signal · last broadcast Jul 21, 08:40 UTC
Flights observed
80
Distinct callsigns
20
Country
CN
Last broadcast
Jul 21, 08:40 UTC

Last known position

Most recent position reported by Mode-S 781B14.

Country allocation

The ICAO 24-bit address 781B14 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
CCA8140 Air China 6 2026-07-21
CCA8139 Air China 6 2026-07-21
CCA8192 Air China 5 2026-07-21
CCA1142 Air China 5 2026-05-29
CCA1141 Air China 5 2026-05-28
CCA1150 - 4 2026-07-15
CCA1127 Air China 4 2026-05-29
CCA1149 - 3 2026-07-15
CCA1112 - 3 2026-07-06
CCA1111 - 3 2026-07-15
CCA1109 - 3 2026-05-18
CCA9507 - 2 2026-07-13
CCA1929 - 2 2026-07-12
CCA1264 - 2 2026-05-20
CCA1263 - 2 2026-05-20
CCA1220 - 2 2026-05-26
CCA1214 - 2 2026-05-27
CCA9797 - 1 2026-07-12
CCA9684 - 1 2026-07-13
CCA9683 - 1 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 CCA8140 TSN → HET Jul 21, 08:25 UTCJul 21, 08:40 UTC15m
2026-07-21 CCA8192 DSN → TSN Jul 21, 05:40 UTCJul 21, 06:05 UTC25m
2026-07-21 CCA8139 HET → TSN Jul 21, 00:15 UTCJul 21, 00:35 UTC20m
2026-07-20 CCA8140 TSN → HET Jul 20, 09:45 UTCJul 20, 10:20 UTC35m
2026-07-20 CCA8192 DSN → TSN Jul 20, 05:50 UTCJul 20, 06:15 UTC25m
2026-07-19 CCA8139 HET → TSN Jul 19, 23:40 UTCJul 20, 00:00 UTC20m
2026-07-17 CCA8140 - Jul 17, 08:15 UTCJul 17, 08:40 UTC25m
2026-07-17 CCA8192 - Jul 17, 05:45 UTCJul 17, 06:05 UTC20m
2026-07-17 CCA8139 - Jul 17, 00:25 UTCJul 17, 00:45 UTC20m
2026-07-15 CCA1111 - Jul 15, 13:15 UTCJul 15, 13:30 UTC15m
2026-07-15 CCA1150 - Jul 15, 11:10 UTCJul 15, 11:20 UTC10m
2026-07-15 CCA1149 - Jul 15, 08:35 UTCJul 15, 08:55 UTC20m
2026-07-15 CCA1282 - Jul 15, 05:10 UTCJul 15, 05:30 UTC20m
2026-07-15 CCA1281 - Jul 15, 01:40 UTCJul 15, 02:00 UTC20m
2026-07-14 CCA9506 - Jul 14, 14:00 UTCJul 14, 14:20 UTC20m
2026-07-14 CCA9505 - Jul 14, 10:30 UTCJul 14, 10:50 UTC20m
2026-07-14 CCA9511 - Jul 14, 03:40 UTCJul 14, 04:00 UTC20m
2026-07-13 CCA9507 - Jul 13, 22:25 UTCJul 13, 22:40 UTC15m
2026-07-13 CCA1118 - Jul 13, 14:55 UTCJul 13, 15:05 UTC10m
2026-07-13 CCA1117 - Jul 13, 12:20 UTCJul 13, 12:40 UTC20m
2026-07-13 CCA9684 - Jul 13, 09:20 UTCJul 13, 09:40 UTC20m
2026-07-13 CCA9683 - Jul 13, 06:01 UTCJul 13, 06:20 UTC20m
2026-07-13 CCA9661 - Jul 13, 00:40 UTCJul 13, 00:50 UTC10m
2026-07-12 CCA1929 - Jul 12, 10:50 UTCJul 12, 11:10 UTC20m
2026-07-12 CCA9797 - Jul 12, 06:15 UTCJul 12, 06:25 UTC10m
2026-07-11 CCA9603 - Jul 11, 23:15 UTCJul 11, 23:35 UTC20m
2026-07-10 CCA1930 - Jul 10, 17:30 UTCJul 10, 17:40 UTC10m
2026-07-10 CCA1929 - Jul 10, 11:00 UTCJul 10, 11:15 UTC15m
2026-07-06 CCA9507 - Jul 6, 22:30 UTCJul 6, 22:40 UTC10m
2026-07-06 CCA1112 - Jul 6, 00:55 UTCJul 6, 01:15 UTC20m
2026-07-02 CCA8140 - Jul 2, 08:20 UTCJul 2, 08:40 UTC20m
2026-07-02 CCA8139 - Jul 2, 00:25 UTCJul 2, 00:45 UTC20m
2026-06-25 CCA8140 - Jun 25, 08:34 UTCJun 25, 08:55 UTC20m
2026-06-25 CCA8192 - Jun 25, 05:50 UTCJun 25, 06:14 UTC25m
2026-06-25 CCA8139 - Jun 25, 00:24 UTCJun 25, 00:49 UTC25m
2026-06-03 CCA8140 TSN → HET Jun 3, 08:05 UTCJun 3, 08:35 UTC30m
2026-06-03 CCA8192 DSN → TSN Jun 3, 05:35 UTCJun 3, 06:00 UTC25m
2026-06-02 CCA8139 HET → TSN Jun 2, 23:35 UTCJun 2, 23:55 UTC20m
2026-05-30 CCA1111 PEK → HET May 30, 13:25 UTCMay 30, 13:45 UTC20m
2026-05-29 CCA1127 PEK → YCU May 29, 04:35 UTCMay 29, 04:55 UTC20m
2026-05-29 CCA1142 DSN → PEK May 29, 01:35 UTCMay 29, 01:55 UTC20m
2026-05-28 CCA1141 PEK → DSN May 28, 23:05 UTCMay 28, 23:30 UTC25m
2026-05-27 CCA1593 PEK → YNT May 27, 12:55 UTCMay 27, 13:05 UTC10m
2026-05-27 CCA1214 - May 27, 03:54 UTCMay 27, 04:14 UTC20m
2026-05-26 CCA1597 PEK → WEH May 26, 12:50 UTCMay 26, 13:00 UTC10m
2026-05-26 CCA1220 - May 26, 10:29 UTCMay 26, 10:50 UTC20m
2026-05-26 CCA1219 - May 26, 06:54 UTCMay 26, 07:15 UTC20m
2026-05-25 CCA1150 DSN → PEK May 25, 11:10 UTCMay 25, 11:30 UTC20m
2026-05-22 CCA1142 DSN → PEK May 22, 01:30 UTCMay 22, 01:55 UTC25m
2026-05-21 CCA1141 PEK → DSN May 21, 23:00 UTCMay 21, 23:20 UTC20m

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-650R page for operator, model, and routing details .

Mode-S 781B14 frequently asked

What is Mode-S code 781B14?
781B14 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-650R.
Where is Mode-S 781B14 registered?
Mode-S code 781B14 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B14 broadcasting right now?
No active broadcast right now. Last signal was Jul 21, 08:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B14, octal 36015424, decimal 7,871,252.
What flights does 781B14 operate?
Mode-S 781B14 has broadcast 20 distinct callsigns, including CCA8140, CCA8139, CCA8192, CCA1142, CCA1141.