Apparatus

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sensors Mode-S transponder

781A8A

ICAO 24-bit transponder address · allocated to China

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

Hex
781A8A
Octal
36015212
Decimal
7,871,114
Country
CN
Tail
B-650L
Type
AJ27
No current signal · last broadcast 3h ago
Flights observed
93
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 781A8A.

Country allocation

The ICAO 24-bit address 781A8A 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
CCA1142 - 7 2026-07-04
CCA1141 Air China 7 2026-07-03
CCA1111 - 7 2026-07-18
CCA1109 - 6 2026-07-13
CCA1150 - 5 2026-07-08
CCA1139 - 5 2026-07-11
CCA1112 - 5 2026-07-08
CCA1263 - 4 2026-07-13
CCA1227 - 4 2026-07-04
CCA1214 - 4 2026-07-16
CCA1213 - 4 2026-07-16
CCA1149 - 4 2026-07-08
CCA1264 - 3 2026-07-13
CCA1228 - 3 2026-07-04
CCA1220 - 3 2026-05-21
CCA1219 - 3 2026-05-21
CCA8192 Air China 2 2026-05-29
CCA8140 Air China 2 2026-05-29
CCA8139 Air China 2 2026-05-29
CCA1282 - 2 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CCA1111 - Jul 18, 13:20 UTCJul 18, 13:45 UTC25m
2026-07-18 CCA9537 - Jul 18, 03:55 UTCJul 18, 04:05 UTC10m
2026-07-16 CCA1683 - Jul 16, 13:00 UTCJul 16, 13:10 UTC10m
2026-07-16 CCA1214 - Jul 16, 03:55 UTCJul 16, 04:15 UTC20m
2026-07-16 CCA1213 - Jul 16, 00:10 UTCJul 16, 00:35 UTC25m
2026-07-14 CCA1118 - Jul 14, 06:20 UTCJul 14, 06:40 UTC20m
2026-07-14 CCA1117 - Jul 14, 03:20 UTCJul 14, 03:45 UTC25m
2026-07-13 CCA1264 - Jul 13, 14:30 UTCJul 13, 14:50 UTC20m
2026-07-13 CCA1263 - Jul 13, 10:40 UTCJul 13, 11:00 UTC20m
2026-07-13 CCA1109 - Jul 13, 03:25 UTCJul 13, 03:40 UTC15m
2026-07-12 CCA9507 - Jul 12, 22:30 UTCJul 12, 22:40 UTC10m
2026-07-12 CCA1214 - Jul 12, 03:35 UTCJul 12, 03:55 UTC20m
2026-07-11 CCA1213 - Jul 11, 23:55 UTCJul 12, 00:20 UTC25m
2026-07-11 CCA1140 - Jul 11, 16:35 UTCJul 11, 16:50 UTC15m
2026-07-11 CCA1139 - Jul 11, 12:30 UTCJul 11, 12:45 UTC15m
2026-07-11 CCA1282 - Jul 11, 07:35 UTCJul 11, 08:01 UTC25m
2026-07-11 CCA1281 - Jul 11, 01:30 UTCJul 11, 01:55 UTC25m
2026-07-08 CCA1150 - Jul 8, 11:15 UTCJul 8, 11:35 UTC20m
2026-07-08 CCA1149 - Jul 8, 09:00 UTCJul 8, 09:10 UTC10m
2026-07-08 CCA1109 - Jul 8, 03:20 UTCJul 8, 03:35 UTC15m
2026-07-08 CCA1112 - Jul 8, 01:00 UTCJul 8, 01:20 UTC20m
2026-07-04 CCA1111 - Jul 4, 13:35 UTCJul 4, 14:00 UTC25m
2026-07-04 CCA1228 - Jul 4, 08:20 UTCJul 4, 08:35 UTC15m
2026-07-04 CCA1227 - Jul 4, 04:20 UTCJul 4, 04:45 UTC25m
2026-07-04 CCA1142 - Jul 4, 02:00 UTCJul 4, 02:20 UTC20m
2026-07-03 CCA1141 PEK → DSN Jul 3, 23:05 UTCJul 3, 23:25 UTC20m
2026-07-03 CCA1150 - Jul 3, 12:30 UTCJul 3, 12:50 UTC20m
2026-07-03 CCA1149 - Jul 3, 08:35 UTCJul 3, 08:55 UTC20m
2026-07-01 CCA1697 - Jul 1, 23:35 UTCJul 1, 23:45 UTC10m
2026-07-01 CCA1139 - Jul 1, 10:05 UTCJul 1, 10:20 UTC15m
2026-06-13 CCA1282 - Jun 13, 01:30 UTCJun 13, 05:55 UTC4h 24m
2026-06-12 CCA1139 PEK → YCU Jun 12, 10:05 UTCJun 12, 10:20 UTC15m
2026-06-12 CCA1559 PEK → YNT Jun 12, 04:40 UTCJun 12, 04:50 UTC10m
2026-06-12 CCA1142 DSN → PEK Jun 12, 01:40 UTCJun 12, 02:00 UTC20m
2026-06-11 CCA1141 PEK → DSN Jun 11, 23:00 UTCJun 11, 23:20 UTC20m
2026-06-11 CCA1139 PEK → YCU Jun 11, 10:20 UTCJun 11, 10:40 UTC20m
2026-06-11 CCA1109 - Jun 11, 03:10 UTCJun 11, 03:20 UTC10m
2026-06-11 CCA1112 HET → PEK Jun 11, 00:50 UTCJun 11, 01:10 UTC20m
2026-06-02 CCA1111 PEK → HET Jun 2, 13:10 UTCJun 2, 13:30 UTC20m
2026-05-31 CCA1545 PEK → YNT May 31, 00:30 UTCMay 31, 00:40 UTC10m
2026-05-29 CCA8140 TSN → HET May 29, 08:20 UTCMay 29, 08:35 UTC15m
2026-05-29 CCA8192 DSN → TSN May 29, 05:45 UTCMay 29, 06:10 UTC25m
2026-05-29 CCA8139 HET → TSN May 29, 00:30 UTCMay 29, 00:50 UTC20m
2026-05-28 CCA8140 TSN → HET May 28, 08:15 UTCMay 28, 08:35 UTC20m
2026-05-28 CCA8192 DSN → TSN May 28, 05:40 UTCMay 28, 06:00 UTC20m
2026-05-28 CCA8139 HET → TSN May 28, 00:20 UTCMay 28, 00:40 UTC20m
2026-05-21 CCA1220 - May 21, 10:35 UTCMay 21, 10:50 UTC15m
2026-05-21 CCA1219 - May 21, 07:05 UTCMay 21, 07:25 UTC20m
2026-05-20 CCA1150 DSN → PEK May 20, 11:10 UTCMay 20, 11:30 UTC20m
2026-05-20 CCA1109 - May 20, 03:20 UTCMay 20, 03:30 UTC10m

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

Mode-S 781A8A frequently asked

What is Mode-S code 781A8A?
781A8A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-650L.
Where is Mode-S 781A8A registered?
Mode-S code 781A8A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781A8A broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781A8A, octal 36015212, decimal 7,871,114.
What flights does 781A8A operate?
Mode-S 781A8A has broadcast 20 distinct callsigns, including CCA1142, CCA1141, CCA1111, CCA1109, CCA1150.