Apparatus

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sensors Mode-S transponder

7817D2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30AX · AIRBUS A-320neo

Hex
7817D2
Octal
36013722
Decimal
7,870,418
Country
CN
Tail
B-30AX
Type
A20N
No current signal · last broadcast 18h ago
Flights observed
33
Distinct callsigns
12
Country
CN
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 7817D2.

Country allocation

The ICAO 24-bit address 7817D2 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
CES898 China Eastern Airlines 6 2026-05-10
CES897 China Eastern Airlines 6 2026-05-10
CES6078 China Eastern Airlines 6 2026-05-23
CES6077 China Eastern Airlines 5 2026-05-23
CES770 China Eastern Airlines 2 2026-06-02
CES769 China Eastern Airlines 2 2026-06-02
CES870 China Eastern Airlines 1 2026-05-02
CES869 China Eastern Airlines 1 2026-05-01
CES6098 China Eastern Airlines 1 2026-04-15
CES6097 China Eastern Airlines 1 2026-04-15
CES5096 China Eastern Airlines 1 2026-05-06
CES5095 China Eastern Airlines 1 2026-05-06

Recent flights last 33

DateFlightRouteTakeoffLandingDuration
2026-06-02 CES770 SIN → HFE Jun 2, 08:10 UTCJun 2, 11:45 UTC3h 35m
2026-06-02 CES769 HFE → SIN Jun 2, 02:40 UTCJun 2, 02:55 UTC15m
2026-05-29 CES770 SIN → HFE May 29, 08:20 UTCMay 29, 12:05 UTC3h 45m
2026-05-29 CES769 HFE → SIN May 29, 03:05 UTCMay 29, 03:25 UTC20m
2026-05-23 CES6078 SIN → NGB May 23, 10:00 UTCMay 23, 14:00 UTC4h 0m
2026-05-23 CES6077 NGB → SIN May 23, 04:45 UTCMay 23, 07:55 UTC3h 10m
2026-05-21 CES6078 SIN → NGB May 21, 09:45 UTCMay 21, 13:55 UTC4h 10m
2026-05-21 CES6077 NGB → SIN May 21, 04:00 UTCMay 21, 07:30 UTC3h 30m
2026-05-19 CES6078 SIN → NGB May 19, 09:55 UTCMay 19, 13:35 UTC3h 40m
2026-05-16 CES6078 SIN → NGB May 16, 09:56 UTCMay 16, 10:25 UTC30m
2026-05-16 CES6077 NGB → SIN May 16, 07:51 UTCMay 16, 08:16 UTC25m
2026-05-14 CES6078 SIN → NGB May 14, 09:50 UTCMay 14, 13:50 UTC4h 0m
2026-05-14 CES6077 NGB → SIN May 14, 03:40 UTCMay 14, 07:30 UTC3h 50m
2026-05-12 CES6078 SIN → NGB May 12, 10:00 UTCMay 12, 13:55 UTC3h 55m
2026-05-12 CES6077 NGB → SIN May 12, 04:30 UTCMay 12, 04:40 UTC10m
2026-05-10 CES898 SIN → HGH May 10, 08:15 UTCMay 10, 11:50 UTC3h 35m
2026-05-10 CES897 HGH → SIN May 10, 05:14 UTCMay 10, 05:25 UTC10m
2026-05-06 CES5096 KUL → HGH May 6, 07:30 UTCMay 6, 22:35 UTC15h 4m
2026-05-06 CES5095 HGH → KUL May 6, 02:35 UTCMay 6, 06:15 UTC3h 40m
2026-05-02 CES870 SGN → HGH May 2, 16:35 UTCMay 2, 23:15 UTC6h 40m
2026-05-01 CES869 HGH → SGN May 1, 22:45 UTCMay 2, 22:30 UTC23h 45m
2026-05-01 CES898 SIN → HGH May 1, 19:45 UTCMay 2, 16:55 UTC21h 10m
2026-05-01 CES897 HGH → SIN May 1, 17:40 UTCMay 1, 18:15 UTC35m
2026-04-29 CES898 SIN → HGH Apr 29, 08:34 UTCApr 29, 08:50 UTC15m
2026-04-28 CES897 HGH → SIN Apr 28, 16:30 UTCApr 29, 06:15 UTC13h 45m
2026-04-26 CES898 SIN → HGH Apr 26, 07:55 UTCApr 26, 11:05 UTC3h 10m
2026-04-26 CES897 HGH → SIN Apr 26, 02:30 UTCApr 26, 06:20 UTC3h 50m
2026-04-24 CES898 SIN → HGH Apr 24, 19:55 UTCApr 24, 23:35 UTC3h 40m
2026-04-24 CES897 HGH → SIN Apr 24, 15:00 UTCApr 24, 18:30 UTC3h 30m
2026-04-20 CES898 SIN → HGH Apr 20, 19:35 UTCApr 20, 23:15 UTC3h 40m
2026-04-20 CES897 HGH → SIN Apr 20, 14:55 UTCApr 20, 18:05 UTC3h 10m
2026-04-15 CES6098 HKG → LHW Apr 15, 04:40 UTCApr 15, 04:50 UTC10m
2026-04-15 CES6097 LHW → HKG Apr 15, 02:55 UTCApr 15, 03:20 UTC25m

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-30AX page for operator, model, and routing details .

Mode-S 7817D2 frequently asked

What is Mode-S code 7817D2?
7817D2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30AX.
Where is Mode-S 7817D2 registered?
Mode-S code 7817D2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7817D2 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7817D2, octal 36013722, decimal 7,870,418.
What flights does 7817D2 operate?
Mode-S 7817D2 has broadcast 12 distinct callsigns, including CES898, CES897, CES6078, CES6077, CES770.