Apparatus

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sensors Mode-S transponder

781AA8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-220K · BOEING 787-9 Dreamliner

Hex
781AA8
Octal
36015250
Decimal
7,871,144
Country
CN
Tail
B-220K
Type
B789
Broadcasting now · callsign CSH816 · 29,975 ft
Flights observed
242
Distinct callsigns
14
Country
CN
Last broadcast
Jul 26, 11:10 UTC

Current position

781AA8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781AA8 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 14 distinct

Callsign Airline Flights Last seen
CSH870 Shanghai Airlines 57 2026-07-23
CSH869 Shanghai Airlines 45 2026-07-22
CSH885 Shanghai Airlines 33 2026-07-26
CSH871 Shanghai Airlines 19 2026-07-21
CSH895 Shanghai Airlines 15 2026-07-19
CSH872 Shanghai Airlines 14 2026-07-21
CSH886 Shanghai Airlines 12 2026-07-26
CSH821 Shanghai Airlines 12 2026-07-18
CSH898 - 10 2026-07-16
CSH897 - 10 2026-07-16
CSH896 - 9 2026-07-12
CSH822 - 4 2026-06-15
CSH802 Shanghai Airlines 1 2026-04-26
CSH801 Shanghai Airlines 1 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSH886 KUL → PVG Jul 26, 10:45 UTCJul 26, 11:10 UTC25m
2026-07-26 CSH886 KUL → PVG Jul 26, 08:30 UTCJul 26, 08:40 UTC10m
2026-07-26 CSH885 PVG → KUL Jul 26, 06:30 UTCJul 26, 06:55 UTC26m
2026-07-25 CSH886 KUL → PVG Jul 25, 11:30 UTCJul 26, 04:30 UTC17h 0m
2026-07-25 CSH886 KUL → PVG Jul 25, 09:10 UTCJul 25, 09:20 UTC10m
2026-07-24 CSH885 PVG → KUL Jul 24, 12:05 UTCJul 25, 07:30 UTC19h 25m
2026-07-24 CSH885 PVG → KUL Jul 24, 11:40 UTCJul 25, 07:30 UTC19h 50m
2026-07-24 CSH886 KUL → PVG Jul 24, 08:35 UTCJul 25, 07:30 UTC22h 55m
2026-07-23 CSH870 BUD → PVG Jul 23, 12:05 UTCJul 24, 06:30 UTC18h 25m
2026-07-23 CSH870 BUD → PVG Jul 23, 10:45 UTCJul 24, 06:30 UTC19h 45m
2026-07-22 CSH869 PVG → BUD Jul 22, 13:45 UTCJul 23, 05:00 UTC15h 15m
2026-07-21 CSH872 MRS → PVG Jul 21, 21:30 UTCJul 22, 12:25 UTC14h 55m
2026-07-21 CSH872 MRS → PVG Jul 21, 16:50 UTCJul 21, 18:50 UTC2h 0m
2026-07-21 CSH871 PVG → MRS Jul 21, 09:40 UTCJul 21, 12:05 UTC2h 25m
2026-07-20 CSH871 PVG → MRS Jul 20, 22:45 UTCJul 21, 06:10 UTC7h 24m
2026-07-20 CSH871 PVG → MRS Jul 20, 08:30 UTCJul 21, 06:10 UTC21h 39m
2026-07-19 CSH895 PVG → HND Jul 19, 12:05 UTCJul 20, 06:40 UTC18h 35m
2026-07-19 CSH895 PVG → HND Jul 19, 11:15 UTCJul 20, 06:40 UTC19h 25m
2026-07-18 CSH821 PVG → KIX Jul 18, 15:55 UTCJul 19, 09:40 UTC17h 45m
2026-07-18 CSH870 - Jul 18, 12:05 UTCJul 19, 09:40 UTC21h 35m
2026-07-18 CSH870 BUD → KIX Jul 18, 10:40 UTCJul 19, 09:40 UTC23h 0m
2026-07-17 CSH869 - Jul 17, 19:35 UTCJul 18, 05:10 UTC9h 36m
2026-07-17 CSH869 - Jul 17, 03:39 UTCJul 18, 02:00 UTC22h 20m
2026-07-17 CSH869 - Jul 17, 00:25 UTCJul 17, 23:25 UTC23h 0m
2026-07-16 CSH898 - Jul 16, 20:05 UTCJul 17, 19:55 UTC23h 50m
2026-07-16 CSH898 - Jul 16, 18:55 UTCJul 17, 03:55 UTC9h 0m
2026-07-16 CSH897 - Jul 16, 06:15 UTCJul 16, 15:35 UTC9h 20m
2026-07-15 CSH897 - Jul 15, 12:10 UTCJul 16, 10:04 UTC21h 55m
2026-07-15 CSH886 - Jul 15, 09:10 UTCJul 16, 06:30 UTC21h 20m
2026-07-14 CSH870 - Jul 14, 12:05 UTCJul 15, 07:05 UTC18h 59m
2026-07-14 CSH870 - Jul 14, 10:35 UTCJul 15, 07:05 UTC20h 29m
2026-07-13 CSH869 - Jul 13, 12:40 UTCJul 14, 04:40 UTC16h 0m
2026-07-13 CSH869 - Jul 13, 09:30 UTCJul 14, 04:40 UTC19h 10m
2026-07-12 CSH896 - Jul 12, 13:15 UTCJul 13, 07:40 UTC18h 25m
2026-07-12 CSH895 KIX → HND Jul 12, 05:10 UTCJul 12, 11:50 UTC6h 40m
2026-07-10 CSH821 - Jul 10, 14:10 UTCJul 11, 08:55 UTC18h 45m
2026-07-10 CSH870 - Jul 10, 12:05 UTCJul 11, 08:55 UTC20h 50m
2026-07-10 CSH870 BUD → KIX Jul 10, 10:45 UTCJul 11, 08:55 UTC22h 11m
2026-07-09 CSH869 - Jul 9, 12:30 UTCJul 10, 05:05 UTC16h 35m
2026-07-09 CSH869 - Jul 9, 09:30 UTCJul 10, 05:05 UTC19h 35m
2026-07-09 CSH885 - Jul 9, 04:20 UTCJul 9, 08:10 UTC3h 50m
2026-07-08 CSH885 - Jul 8, 10:25 UTCJul 9, 08:10 UTC21h 45m
2026-07-07 CSH821 - Jul 7, 15:55 UTCJul 8, 09:10 UTC17h 15m
2026-07-07 CSH870 BUD → PVG Jul 7, 12:05 UTCJul 8, 09:10 UTC21h 5m
2026-07-07 CSH870 BUD → PVG Jul 7, 10:35 UTCJul 8, 09:10 UTC22h 35m
2026-07-06 CSH869 PVG → BUD Jul 6, 11:35 UTCJul 7, 04:45 UTC17h 10m
2026-07-06 CSH869 PVG → BUD Jul 6, 08:15 UTCJul 7, 04:45 UTC20h 30m
2026-07-05 CSH885 - Jul 5, 12:55 UTCJul 6, 06:25 UTC17h 30m
2026-07-05 CSH886 - Jul 5, 09:45 UTCJul 5, 10:00 UTC15m
2026-07-05 CSH885 - Jul 5, 04:10 UTCJul 5, 08:15 UTC4h 5m

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-220K page for operator, model, and routing details .

Mode-S 781AA8 frequently asked

What is Mode-S code 781AA8?
781AA8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-220K.
Where is Mode-S 781AA8 registered?
Mode-S code 781AA8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781AA8 broadcasting right now?
Yes. Mode-S 781AA8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781AA8, octal 36015250, decimal 7,871,144.
What flights does 781AA8 operate?
Mode-S 781AA8 has broadcast 14 distinct callsigns, including CSH870, CSH869, CSH885, CSH871, CSH895.