Apparatus

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sensors Mode-S transponder

780D99

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1772 · BOEING 737-800

Hex
780D99
Octal
36006631
Decimal
7,867,801
Country
CN
Tail
B-1772
Type
B738
No current signal · last broadcast 4d ago
Flights observed
29
Distinct callsigns
9
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 780D99.

Country allocation

The ICAO 24-bit address 780D99 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 9 distinct

Callsign Airline Flights Last seen
CES6088 China Eastern Airlines 9 2026-06-11
CES6087 China Eastern Airlines 9 2026-06-11
CES6562 China Eastern Airlines 2 2026-05-17
CES6399 China Eastern Airlines 2 2026-05-18
CES206 China Eastern Airlines 2 2026-05-03
CES205 China Eastern Airlines 2 2026-05-03
CES9870 China Eastern Airlines 1 2026-05-07
CES6896 China Eastern Airlines 1 2026-05-08
CES5675 China Eastern Airlines 1 2026-06-13

Recent flights last 29

DateFlightRouteTakeoffLandingDuration
2026-06-13 CES5675 KHN → HAK Jun 13, 04:20 UTCJun 13, 04:35 UTC15m
2026-06-11 CES6088 BKK → KMG Jun 11, 06:30 UTCJun 11, 07:30 UTC1h 0m
2026-06-11 CES6087 KMG → BKK Jun 11, 04:35 UTCJun 11, 05:05 UTC30m
2026-06-10 CES6088 BKK → KMG Jun 10, 06:30 UTCJun 11, 05:05 UTC22h 35m
2026-06-10 CES6087 KMG → BKK Jun 10, 04:40 UTCJun 10, 05:15 UTC35m
2026-06-07 CES6088 BKK → KMG Jun 7, 06:25 UTCJun 7, 07:20 UTC55m
2026-06-07 CES6087 KMG → BKK Jun 7, 04:05 UTCJun 7, 05:05 UTC1h 0m
2026-06-04 CES6088 BKK → KMG Jun 4, 06:30 UTCJun 4, 07:30 UTC1h 0m
2026-06-04 CES6087 KMG → BKK Jun 4, 04:20 UTCJun 4, 05:20 UTC1h 0m
2026-05-30 CES6088 BKK → KMG May 30, 06:35 UTCMay 30, 07:30 UTC55m
2026-05-30 CES6087 KMG → BKK May 30, 04:05 UTCMay 30, 05:00 UTC55m
2026-05-28 CES6088 BKK → KMG May 28, 06:30 UTCMay 28, 07:30 UTC1h 0m
2026-05-28 CES6087 KMG → BKK May 28, 04:10 UTCMay 28, 05:05 UTC55m
2026-05-21 CES6088 BKK → KMG May 21, 06:50 UTCMay 21, 07:50 UTC1h 0m
2026-05-21 CES6087 KMG → BKK May 21, 04:30 UTCMay 21, 05:00 UTC30m
2026-05-18 CES6399 HFE → TYN May 18, 01:25 UTCMay 18, 13:15 UTC11h 50m
2026-05-17 CES6399 HFE → TYN May 17, 12:30 UTCMay 18, 10:05 UTC21h 35m
2026-05-17 CES6562 HRB → PVG May 17, 12:05 UTCMay 18, 10:05 UTC22h 0m
2026-05-15 CES6088 BKK → KMG May 15, 06:35 UTCMay 15, 07:35 UTC1h 0m
2026-05-15 CES6087 KMG → BKK May 15, 04:05 UTCMay 15, 05:05 UTC1h 0m
2026-05-08 CES6896 CGQ → WEH May 8, 10:59 UTCMay 8, 11:09 UTC10m
2026-05-07 CES9870 SHE → CAN May 7, 03:05 UTCMay 7, 06:50 UTC3h 45m
2026-05-04 CES6562 HRB → PVG May 4, 12:15 UTCMay 5, 06:10 UTC17h 56m
2026-05-03 CES206 CNX → PVG May 3, 08:00 UTCMay 3, 08:20 UTC20m
2026-05-03 CES205 PVG → CNX May 3, 06:05 UTCMay 3, 06:35 UTC30m
2026-05-02 CES206 CNX → PVG May 2, 08:00 UTCMay 3, 06:15 UTC22h 14m
2026-05-02 CES205 PVG → CNX May 2, 06:10 UTCMay 2, 06:45 UTC35m
2026-04-29 CES6088 BKK → KMG Apr 29, 06:39 UTCApr 29, 07:35 UTC55m
2026-04-29 CES6087 KMG → BKK Apr 29, 04:49 UTCApr 29, 05:20 UTC30m

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-1772 page for operator, model, and routing details .

Mode-S 780D99 frequently asked

What is Mode-S code 780D99?
780D99 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1772.
Where is Mode-S 780D99 registered?
Mode-S code 780D99 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780D99 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780D99, octal 36006631, decimal 7,867,801.
What flights does 780D99 operate?
Mode-S 780D99 has broadcast 9 distinct callsigns, including CES6088, CES6087, CES6562, CES6399, CES206.