Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781617

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-306D · AIRBUS A-320neo

Hex
781617
Octal
36013027
Decimal
7,869,975
Country
CN
Tail
B-306D
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
60
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781617.

Country allocation

The ICAO 24-bit address 781617 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
CES2961 China Eastern Airlines 6 2026-06-08
CES2962 China Eastern Airlines 5 2026-06-08
CES6329 China Eastern Airlines 4 2026-06-02
CES2803 - 4 2026-07-01
CES765 - 3 2026-07-17
CES6340 China Eastern Airlines 3 2026-06-02
CES2804 China Eastern Airlines 3 2026-07-01
CES7708 - 2 2026-07-11
CES7707 - 2 2026-07-11
CES766 - 2 2026-07-17
CES2970 China Eastern Airlines 2 2026-05-17
CES2969 China Eastern Airlines 2 2026-05-17
CES2951 China Eastern Airlines 2 2026-06-09
CES2840 China Eastern Airlines 2 2026-04-18
CES2839 China Eastern Airlines 2 2026-05-15
CES2173 China Eastern Airlines 2 2026-04-21
CES9798 - 1 2026-06-29
CES9797 - 1 2026-06-29
CES9767 China Eastern Airlines 1 2026-06-25
CES7712 - 1 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CES766 - Jul 17, 04:44 UTCJul 17, 05:55 UTC1h 10m
2026-07-17 CES765 - Jul 17, 02:54 UTCJul 17, 03:14 UTC20m
2026-07-17 CES765 - Jul 17, 01:09 UTCJul 17, 02:15 UTC1h 5m
2026-07-14 CES7712 - Jul 14, 08:15 UTCJul 14, 08:25 UTC10m
2026-07-11 CES7708 - Jul 11, 23:40 UTCJul 12, 03:10 UTC3h 30m
2026-07-11 CES7707 - Jul 11, 17:45 UTCJul 11, 21:10 UTC3h 25m
2026-07-01 CES2804 BKK → NKG Jul 1, 21:20 UTCJul 1, 22:20 UTC1h 0m
2026-07-01 CES2803 - Jul 1, 18:05 UTCJul 1, 18:20 UTC15m
2026-07-01 CES2803 - Jul 1, 16:35 UTCJul 1, 17:15 UTC40m
2026-07-01 CES2888 - Jul 1, 10:50 UTCJul 1, 11:00 UTC10m
2026-07-01 CES2887 - Jul 1, 08:45 UTCJul 1, 09:05 UTC20m
2026-06-29 CES7708 - Jun 29, 23:25 UTCJun 30, 03:35 UTC4h 11m
2026-06-29 CES7707 - Jun 29, 20:35 UTCJun 29, 20:54 UTC20m
2026-06-29 CES9798 - Jun 29, 06:54 UTCJun 29, 17:49 UTC10h 55m
2026-06-29 CES9797 - Jun 29, 04:00 UTCJun 29, 04:45 UTC45m
2026-06-27 CES2804 BKK → NKG Jun 27, 19:49 UTCJun 27, 22:04 UTC2h 15m
2026-06-27 CES2803 - Jun 27, 16:35 UTCJun 27, 18:15 UTC1h 40m
2026-06-27 CES2672 - Jun 27, 05:59 UTCJun 27, 06:25 UTC25m
2026-06-25 CES9767 NKG → CAN Jun 25, 17:05 UTCJun 25, 17:14 UTC10m
2026-06-19 CES2878 - Jun 19, 15:34 UTCJun 19, 15:44 UTC10m
2026-06-19 CES2877 - Jun 19, 13:34 UTCJun 19, 13:50 UTC15m
2026-06-09 CES2951 NKG → ZUH Jun 9, 04:45 UTCJun 9, 04:55 UTC10m
2026-06-08 CES2962 BKK → NKG Jun 8, 10:35 UTCJun 8, 10:55 UTC20m
2026-06-08 CES2961 WUX → MFM Jun 8, 07:35 UTCJun 8, 07:55 UTC20m
2026-06-04 CES2962 BKK → NKG Jun 4, 10:15 UTCJun 4, 11:20 UTC1h 5m
2026-06-04 CES2961 WUX → MFM Jun 4, 07:55 UTCJun 4, 08:50 UTC55m
2026-06-03 CES2668 PKX → WUX Jun 3, 13:20 UTCJun 3, 13:35 UTC15m
2026-06-02 CES6340 SHE → SHA Jun 2, 11:00 UTCJun 2, 16:00 UTC5h 0m
2026-06-02 CES6329 PVG → ZHA Jun 2, 00:25 UTCJun 2, 01:10 UTC45m
2026-06-01 CES6329 PVG → ZHA Jun 1, 00:20 UTCJun 1, 01:05 UTC45m
2026-05-30 CES2962 BKK → NKG May 30, 09:00 UTCMay 30, 09:50 UTC50m
2026-05-30 CES2961 WUX → MFM May 30, 07:20 UTCMay 30, 07:40 UTC20m
2026-05-28 CES2662 ZUH → PKX May 28, 12:20 UTCMay 28, 12:35 UTC15m
2026-05-28 CES2711 NKG → ZUH May 28, 10:35 UTCMay 28, 10:55 UTC20m
2026-05-28 CES2893 NKG → SYX May 28, 02:00 UTCMay 28, 05:55 UTC3h 55m
2026-05-21 CES6340 SHE → SHA May 21, 12:00 UTCMay 21, 15:35 UTC3h 35m
2026-05-21 CES6329 PVG → ZHA May 21, 00:20 UTCMay 21, 00:30 UTC10m
2026-05-20 CES6329 PVG → ZHA May 20, 00:50 UTCMay 20, 01:00 UTC10m
2026-05-17 CES2970 KUL → NKG May 17, 17:20 UTCMay 17, 20:50 UTC3h 30m
2026-05-17 CES2969 NKG → KUL May 17, 11:45 UTCMay 17, 15:50 UTC4h 5m
2026-05-15 CES2839 NKG → HRB May 15, 18:30 UTCMay 16, 01:40 UTC7h 10m
2026-05-10 CES766 HKG → NKG May 10, 03:55 UTCMay 10, 12:49 UTC8h 55m
2026-05-10 CES765 NKG → HKG May 10, 01:39 UTCMay 10, 02:10 UTC30m
2026-05-09 CES2970 KUL → NKG May 9, 16:55 UTCMay 10, 01:09 UTC8h 15m
2026-05-09 CES2969 NKG → KUL May 9, 11:25 UTCMay 9, 15:30 UTC4h 5m
2026-05-05 CES2804 BKK → NKG May 5, 19:50 UTCMay 5, 22:05 UTC2h 15m
2026-05-05 CES2803 NKG → BKK May 5, 17:40 UTCMay 5, 18:05 UTC25m
2026-05-02 CES2951 NKG → ZUH May 2, 04:45 UTCMay 2, 04:55 UTC10m
2026-05-02 CES2661 ZUH → PKX May 2, 02:40 UTCMay 2, 02:50 UTC10m
2026-05-01 CES2962 BKK → NKG May 1, 09:15 UTCMay 1, 10:15 UTC1h 0m

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-306D page for operator, model, and routing details .

Mode-S 781617 frequently asked

What is Mode-S code 781617?
781617 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-306D.
Where is Mode-S 781617 registered?
Mode-S code 781617 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781617 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781617, octal 36013027, decimal 7,869,975.
What flights does 781617 operate?
Mode-S 781617 has broadcast 20 distinct callsigns, including CES2961, CES2962, CES6329, CES2803, CES765.