Apparatus

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sensors Mode-S transponder

781716

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20CC · BOEING 737 MAX 8

Hex
781716
Octal
36013426
Decimal
7,870,230
Country
CN
Tail
B-20CC
Type
B38M
No current signal · last broadcast 21h ago
Flights observed
182
Distinct callsigns
12
Country
CN
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 781716.

Country allocation

The ICAO 24-bit address 781716 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 12 distinct

Callsign Airline Flights Last seen
CES6651 - 51 2026-07-05
CES6319 - 30 2026-07-13
CES205 - 25 2026-07-12
CES6399 - 20 2026-07-14
CES6652 - 13 2026-07-04
CES206 - 12 2026-07-12
CES5612 China Eastern Airlines 11 2026-06-21
CES6320 China Eastern Airlines 8 2026-06-05
CES6562 - 6 2026-07-16
CES6400 - 4 2026-06-03
CES760 - 1 2026-07-09
CES640Z - 1 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 CES6562 - Jul 16, 09:00 UTCJul 17, 01:35 UTC16h 35m
2026-07-16 CES6562 - Jul 16, 00:50 UTCJul 16, 12:55 UTC12h 5m
2026-07-14 CES6399 - Jul 14, 01:00 UTCJul 14, 13:05 UTC12h 5m
2026-07-13 CES6319 - Jul 13, 05:35 UTCJul 14, 05:00 UTC23h 25m
2026-07-13 CES6319 - Jul 13, 04:30 UTCJul 14, 01:10 UTC20h 40m
2026-07-12 CES206 - Jul 12, 13:05 UTCJul 13, 01:40 UTC12h 35m
2026-07-12 CES205 - Jul 12, 09:45 UTCJul 12, 11:55 UTC2h 10m
2026-07-11 CES206 - Jul 11, 08:10 UTCJul 11, 09:25 UTC1h 15m
2026-07-11 CES205 - Jul 11, 05:20 UTCJul 11, 06:35 UTC1h 15m
2026-07-10 CES205 - Jul 10, 07:55 UTCJul 11, 06:35 UTC22h 40m
2026-07-10 CES205 - Jul 10, 04:50 UTCJul 10, 06:05 UTC1h 15m
2026-07-09 CES760 - Jul 9, 08:55 UTCJul 9, 22:40 UTC13h 45m
2026-07-09 CES205 - Jul 9, 07:15 UTCJul 9, 07:45 UTC30m
2026-07-08 CES206 - Jul 8, 08:05 UTCJul 9, 07:30 UTC23h 25m
2026-07-08 CES205 - Jul 8, 05:20 UTCJul 8, 06:40 UTC1h 20m
2026-07-07 CES206 - Jul 7, 07:55 UTCJul 7, 21:35 UTC13h 40m
2026-07-07 CES205 - Jul 7, 05:15 UTCJul 7, 06:30 UTC1h 15m
2026-07-06 CES205 - Jul 6, 10:00 UTCJul 7, 06:30 UTC20h 30m
2026-07-06 CES206 - Jul 6, 07:50 UTCJul 6, 08:05 UTC15m
2026-07-06 CES205 - Jul 6, 06:00 UTCJul 6, 06:20 UTC20m
2026-07-05 CES205 - Jul 5, 10:45 UTCJul 6, 04:15 UTC17h 30m
2026-07-05 CES6651 - Jul 5, 01:20 UTCJul 5, 13:30 UTC12h 10m
2026-07-04 CES6651 - Jul 4, 14:15 UTCJul 5, 13:30 UTC23h 15m
2026-07-04 CES6652 - Jul 4, 05:55 UTCJul 5, 05:15 UTC23h 20m
2026-07-04 CES6651 - Jul 4, 03:00 UTCJul 5, 01:30 UTC22h 30m
2026-07-03 CES6651 - Jul 3, 05:00 UTCJul 4, 03:20 UTC22h 20m
2026-07-02 CES6562 - Jul 2, 11:55 UTCJul 3, 05:10 UTC17h 15m
2026-07-02 CES6652 - Jul 2, 03:40 UTCJul 3, 02:10 UTC22h 30m
2026-07-02 CES6651 - Jul 2, 00:50 UTCJul 2, 12:40 UTC11h 50m
2026-07-01 CES6651 - Jul 1, 04:10 UTCJul 2, 01:05 UTC20h 55m
2026-07-01 CES6651 - Jul 1, 01:35 UTCJul 2, 01:05 UTC23h 30m
2026-06-30 CES6651 - Jun 30, 03:50 UTCJul 1, 01:45 UTC21h 55m
2026-06-30 CES6651 - Jun 30, 01:04 UTCJun 30, 04:00 UTC2h 56m
2026-06-29 CES6652 - Jun 29, 03:54 UTCJun 30, 01:14 UTC21h 20m
2026-06-29 CES6651 - Jun 29, 01:20 UTCJun 29, 04:04 UTC2h 45m
2026-06-28 CES206 - Jun 28, 08:05 UTCJun 29, 04:04 UTC20h 0m
2026-06-27 CES205 - Jun 27, 14:49 UTCJun 28, 06:20 UTC15h 30m
2026-06-27 CES205 - Jun 27, 08:49 UTCJun 28, 06:20 UTC21h 30m
2026-06-27 CES206 - Jun 27, 08:05 UTCJun 27, 08:14 UTC10m
2026-06-27 CES205 - Jun 27, 04:49 UTCJun 27, 06:09 UTC1h 20m
2026-06-26 CES205 - Jun 26, 09:35 UTCJun 27, 06:09 UTC20h 35m
2026-06-26 CES206 - Jun 26, 08:34 UTCJun 27, 05:25 UTC20h 50m
2026-06-25 CES205 - Jun 25, 15:54 UTCJun 26, 07:10 UTC15h 15m
2026-06-25 CES205 - Jun 25, 09:34 UTCJun 26, 07:10 UTC21h 35m
2026-06-25 CES205 - Jun 25, 09:05 UTCJun 26, 07:10 UTC22h 5m
2026-06-25 CES206 - Jun 25, 08:20 UTCJun 25, 08:30 UTC10m
2026-06-25 CES205 - Jun 25, 04:49 UTCJun 25, 06:20 UTC1h 30m
2026-06-24 CES205 - Jun 24, 09:34 UTCJun 25, 06:20 UTC20h 45m
2026-06-24 CES206 - Jun 24, 08:04 UTCJun 25, 06:20 UTC22h 15m
2026-06-23 CES205 - Jun 23, 14:55 UTCJun 24, 06:15 UTC15h 20m

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-20CC page for operator, model, and routing details .

Mode-S 781716 frequently asked

What is Mode-S code 781716?
781716 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20CC.
Where is Mode-S 781716 registered?
Mode-S code 781716 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781716 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781716, octal 36013426, decimal 7,870,230.
What flights does 781716 operate?
Mode-S 781716 has broadcast 12 distinct callsigns, including CES6651, CES6319, CES205, CES6399, CES6652.