Apparatus

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sensors Mode-S transponder

78066C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5527 · BOEING 737-800

Hex
78066C
Octal
36003154
Decimal
7,865,964
Country
CN
Tail
B-5527
Type
B738
No current signal · last broadcast Jul 26, 17:20 UTC
Flights observed
129
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 17:20 UTC

Last known position

Most recent position reported by Mode-S 78066C.

Country allocation

The ICAO 24-bit address 78066C 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
CES2031 China Eastern Airlines 26 2026-07-26
CES2032 China Eastern Airlines 19 2026-07-26
CES9613 - 7 2026-06-26
CES9640 - 6 2026-06-18
CES9639 - 6 2026-06-16
CES9614 - 6 2026-06-26
CES9616 China Eastern Airlines 5 2026-05-29
CES9615 China Eastern Airlines 5 2026-05-27
CES5890 - 5 2026-07-06
CES5760 China Eastern Airlines 4 2026-06-01
CES9658 China Eastern Airlines 3 2026-07-24
CES9657 China Eastern Airlines 3 2026-07-24
CES734 China Eastern Airlines 3 2026-06-10
CES5093 China Eastern Airlines 3 2026-04-21
CES9620 China Eastern Airlines 2 2026-05-17
CES9619 China Eastern Airlines 2 2026-05-17
CES7621 - 2 2026-07-20
CES733 China Eastern Airlines 2 2026-06-10
CES6823 China Eastern Airlines 2 2026-05-28
CES5889 - 2 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CES2032 RGN → KMG Jul 26, 08:30 UTCJul 26, 17:20 UTC8h 50m
2026-07-26 CES2031 KMG → RGN Jul 26, 06:15 UTCJul 26, 07:35 UTC1h 21m
2026-07-25 CES2031 KMG → RGN Jul 25, 09:05 UTCJul 26, 07:35 UTC22h 31m
2026-07-24 CES9658 KMG → HET Jul 24, 14:40 UTCJul 24, 14:55 UTC15m
2026-07-24 CES9657 KMG → HKG Jul 24, 12:50 UTCJul 24, 13:20 UTC30m
2026-07-21 CES2032 RGN → KMG Jul 21, 08:40 UTCJul 21, 09:40 UTC1h 0m
2026-07-21 CES2031 KMG → RGN Jul 21, 02:05 UTCJul 21, 07:10 UTC5h 5m
2026-07-20 CES7621 - Jul 20, 15:30 UTCJul 21, 00:30 UTC8h 59m
2026-07-20 CES2032 - Jul 20, 08:40 UTCJul 20, 09:40 UTC1h 0m
2026-07-20 CES2031 KMG → RGN Jul 20, 06:25 UTCJul 20, 07:30 UTC1h 5m
2026-07-19 CES2031 KMG → RGN Jul 19, 09:05 UTCJul 20, 07:30 UTC22h 25m
2026-07-19 CES2032 - Jul 19, 08:30 UTCJul 20, 07:00 UTC22h 30m
2026-07-18 CES2031 - Jul 18, 15:35 UTCJul 19, 07:25 UTC15h 50m
2026-07-18 CES2032 - Jul 18, 08:30 UTCJul 18, 09:30 UTC1h 0m
2026-07-18 CES2031 - Jul 18, 02:09 UTCJul 18, 07:15 UTC5h 6m
2026-07-17 CES7621 - Jul 17, 23:39 UTCJul 18, 00:35 UTC55m
2026-07-15 CES5897 - Jul 15, 06:00 UTCJul 15, 10:15 UTC4h 15m
2026-07-12 CES9624 - Jul 12, 03:25 UTCJul 12, 03:40 UTC15m
2026-07-12 CES9623 - Jul 12, 01:30 UTCJul 12, 02:01 UTC30m
2026-07-11 CES2032 - Jul 11, 08:55 UTCJul 11, 09:15 UTC20m
2026-07-11 CES2031 - Jul 11, 06:05 UTCJul 11, 07:10 UTC1h 5m
2026-07-10 CES2031 - Jul 10, 09:05 UTCJul 11, 07:10 UTC22h 5m
2026-07-10 CES2031 - Jul 10, 08:30 UTCJul 11, 07:00 UTC22h 30m
2026-07-09 CES2031 - Jul 9, 15:10 UTCJul 10, 07:15 UTC16h 5m
2026-07-09 CES5889 - Jul 9, 13:50 UTCJul 9, 14:00 UTC10m
2026-07-09 CES2032 - Jul 9, 08:30 UTCJul 9, 09:30 UTC1h 0m
2026-07-08 CES2031 - Jul 8, 18:40 UTCJul 9, 07:15 UTC12h 35m
2026-07-08 CES5889 - Jul 8, 17:15 UTCJul 8, 17:25 UTC10m
2026-07-08 CES2032 - Jul 8, 08:45 UTCJul 8, 10:00 UTC1h 15m
2026-07-08 CES2031 - Jul 8, 06:30 UTCJul 8, 07:40 UTC1h 10m
2026-07-06 CES5890 - Jul 6, 16:00 UTCJul 6, 16:10 UTC10m
2026-07-06 CES2032 - Jul 6, 08:55 UTCJul 6, 09:20 UTC25m
2026-07-06 CES2031 - Jul 6, 07:05 UTCJul 6, 07:35 UTC30m
2026-07-05 CES5709 - Jul 5, 10:05 UTCJul 5, 10:15 UTC10m
2026-07-05 CES9700 - Jul 5, 01:40 UTCJul 5, 02:05 UTC25m
2026-07-04 CES2032 - Jul 4, 08:45 UTCJul 4, 15:55 UTC7h 10m
2026-07-04 CES2031 - Jul 4, 02:10 UTCJul 4, 07:30 UTC5h 20m
2026-07-03 CES2032 - Jul 3, 08:50 UTCJul 4, 00:45 UTC15h 55m
2026-07-02 CES2031 - Jul 2, 13:30 UTCJul 3, 07:50 UTC18h 20m
2026-07-02 CES9657 - Jul 2, 11:40 UTCJul 2, 12:15 UTC35m
2026-07-01 CES2032 - Jul 1, 08:35 UTCJul 1, 09:35 UTC1h 0m
2026-07-01 CES2031 - Jul 1, 06:15 UTCJul 1, 07:15 UTC1h 0m
2026-06-29 CES2032 - Jun 29, 08:24 UTCJun 29, 09:25 UTC1h 0m
2026-06-29 CES2031 - Jun 29, 06:09 UTCJun 29, 07:20 UTC1h 10m
2026-06-26 CES9614 - Jun 26, 13:59 UTCJun 27, 11:04 UTC21h 5m
2026-06-26 CES9613 - Jun 26, 11:30 UTCJun 26, 12:29 UTC1h 0m
2026-06-25 CES2032 - Jun 25, 09:34 UTCJun 25, 09:55 UTC20m
2026-06-25 CES2031 - Jun 25, 07:39 UTCJun 25, 07:54 UTC15m
2026-06-24 CES5732 - Jun 24, 03:55 UTCJun 24, 04:55 UTC1h 0m
2026-06-23 CES2032 - Jun 23, 08:45 UTCJun 24, 00:59 UTC16h 15m

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-5527 page for operator, model, and routing details .

Mode-S 78066C frequently asked

What is Mode-S code 78066C?
78066C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5527.
Where is Mode-S 78066C registered?
Mode-S code 78066C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78066C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78066C, octal 36003154, decimal 7,865,964.
What flights does 78066C operate?
Mode-S 78066C has broadcast 20 distinct callsigns, including CES2031, CES2032, CES9613, CES9640, CES9639.