Apparatus

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sensors Mode-S transponder

781FF6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32FP · AIRBUS A-350-900

Hex
781FF6
Octal
36017766
Decimal
7,872,502
Country
CN
Tail
B-32FP
Type
A359
No current signal · last broadcast Jul 26, 19:10 UTC
Flights observed
210
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 19:10 UTC

Last known position

Most recent position reported by Mode-S 781FF6.

Country allocation

The ICAO 24-bit address 781FF6 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
CES243 China Eastern Airlines 17 2026-07-23
CES785 China Eastern Airlines 16 2026-06-21
CES244 China Eastern Airlines 14 2026-07-24
CES582 China Eastern Airlines 12 2026-05-29
CES249 China Eastern Airlines 12 2026-07-05
CES786 - 10 2026-06-22
CES581 China Eastern Airlines 10 2026-05-28
CES250 China Eastern Airlines 10 2026-07-06
CES7235 China Eastern Airlines 9 2026-07-25
CES710 - 8 2026-07-13
CES787 China Eastern Airlines 6 2026-06-15
CES7236 China Eastern Airlines 6 2026-07-25
CES709 - 6 2026-07-12
CES255 - 6 2026-06-24
CES562 - 5 2026-06-13
CES561 China Eastern Airlines 5 2026-05-16
CES752 - 4 2026-07-02
CES751 - 4 2026-07-02
CES736 China Eastern Airlines 4 2026-05-01
CES217 China Eastern Airlines 4 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CES7236 HAN → PVG Jul 25, 23:25 UTCJul 26, 19:10 UTC19h 46m
2026-07-25 CES7235 PVG → HAN Jul 25, 11:40 UTCJul 25, 19:45 UTC8h 5m
2026-07-24 CES7235 PVG → HAN Jul 24, 20:55 UTCJul 25, 19:30 UTC22h 35m
2026-07-24 CES7235 PVG → HAN Jul 24, 17:40 UTCJul 25, 17:30 UTC23h 50m
2026-07-24 CES244 MXP → PVG Jul 24, 15:40 UTCJul 25, 12:25 UTC20h 45m
2026-07-24 CES244 MXP → PVG Jul 24, 13:35 UTCJul 25, 12:25 UTC22h 50m
2026-07-24 CES244 MXP → PVG Jul 24, 11:45 UTCJul 24, 21:20 UTC9h 35m
2026-07-23 CES243 PVG → MXP Jul 23, 12:25 UTCJul 24, 05:35 UTC17h 10m
2026-07-23 CES243 PVG → MXP Jul 23, 09:35 UTCJul 24, 05:35 UTC20h 0m
2026-07-23 CES243 PVG → MXP Jul 23, 09:25 UTCJul 24, 05:35 UTC20h 10m
2026-07-22 CES244 - Jul 22, 12:15 UTCJul 23, 07:25 UTC19h 10m
2026-07-21 CES6050 - Jul 21, 10:40 UTCJul 22, 01:45 UTC15h 5m
2026-07-20 CES6049 PVG → SIN Jul 20, 13:35 UTCJul 21, 08:45 UTC19h 9m
2026-07-20 CES244 - Jul 20, 11:35 UTCJul 21, 08:45 UTC21h 9m
2026-07-19 CES243 - Jul 19, 23:10 UTCJul 20, 06:15 UTC7h 5m
2026-07-19 CES243 - Jul 19, 05:35 UTCJul 20, 05:30 UTC23h 55m
2026-07-19 CES728 NRT → PVG Jul 19, 04:25 UTCJul 20, 02:50 UTC22h 25m
2026-07-18 CES727 PVG → NRT Jul 18, 15:35 UTCJul 19, 02:45 UTC11h 10m
2026-07-17 CES565 - Jul 17, 17:44 UTCJul 18, 12:00 UTC18h 16m
2026-07-17 CES565 - Jul 17, 15:35 UTCJul 18, 12:00 UTC20h 26m
2026-07-17 CES244 - Jul 17, 13:35 UTCJul 18, 12:00 UTC22h 26m
2026-07-17 CES244 - Jul 17, 11:55 UTCJul 18, 11:30 UTC23h 36m
2026-07-16 CES243 - Jul 16, 19:25 UTCJul 17, 05:30 UTC10h 5m
2026-07-16 CES243 - Jul 16, 05:40 UTCJul 17, 05:30 UTC23h 50m
2026-07-15 CES523 - Jul 15, 15:40 UTCJul 16, 04:15 UTC12h 35m
2026-07-15 CES565 - Jul 15, 08:05 UTCJul 15, 11:55 UTC3h 50m
2026-07-14 CES524 - Jul 14, 05:35 UTCJul 14, 07:05 UTC1h 30m
2026-07-13 CES710 - Jul 13, 09:50 UTCJul 14, 04:00 UTC18h 10m
2026-07-12 CES709 - Jul 12, 20:10 UTCJul 13, 07:20 UTC11h 10m
2026-07-12 CES709 - Jul 12, 09:05 UTCJul 13, 07:20 UTC22h 15m
2026-07-12 CES782 - Jul 12, 00:35 UTCJul 12, 23:30 UTC22h 55m
2026-07-11 CES524 NRT → ADL Jul 11, 05:31 UTCJul 11, 21:50 UTC16h 20m
2026-07-11 CES523 - Jul 11, 02:15 UTCJul 11, 04:01 UTC1h 45m
2026-07-06 CES250 BCN → PVG Jul 6, 09:25 UTCJul 6, 13:00 UTC3h 35m
2026-07-05 CES249 PVG → BCN Jul 5, 22:05 UTCJul 6, 05:35 UTC7h 30m
2026-07-05 CES249 PVG → BCN Jul 5, 07:35 UTCJul 6, 05:35 UTC22h 0m
2026-07-05 CES249 PVG → BCN Jul 5, 06:25 UTCJul 6, 05:30 UTC23h 5m
2026-07-05 CES249 PVG → BCN Jul 5, 03:20 UTCJul 6, 01:30 UTC22h 10m
2026-07-05 CES782 - Jul 5, 00:20 UTCJul 5, 22:45 UTC22h 25m
2026-07-04 CES781 - Jul 4, 04:10 UTCJul 4, 22:30 UTC18h 20m
2026-07-02 CES752 - Jul 2, 19:45 UTCJul 3, 02:10 UTC6h 25m
2026-07-02 CES751 - Jul 2, 09:00 UTCJul 2, 16:30 UTC7h 30m
2026-07-01 CES751 - Jul 1, 15:40 UTCJul 2, 15:30 UTC23h 50m
2026-07-01 CES751 - Jul 1, 13:35 UTCJul 2, 12:45 UTC23h 10m
2026-07-01 CES250 BCN → PVG Jul 1, 11:35 UTCJul 2, 11:25 UTC23h 50m
2026-07-01 CES250 BCN → PVG Jul 1, 09:35 UTCJul 2, 09:30 UTC23h 55m
2026-07-01 CES250 BCN → PVG Jul 1, 09:25 UTCJul 1, 16:25 UTC7h 0m
2026-06-30 CES249 PVG → BCN Jun 30, 18:35 UTCJul 1, 05:45 UTC11h 10m
2026-06-30 CES5342 - Jun 30, 06:10 UTCJun 30, 06:20 UTC10m
2026-06-30 CES5333 - Jun 30, 04:05 UTCJun 30, 04:25 UTC20m

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-32FP page for operator, model, and routing details .

Mode-S 781FF6 frequently asked

What is Mode-S code 781FF6?
781FF6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32FP.
Where is Mode-S 781FF6 registered?
Mode-S code 781FF6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781FF6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781FF6, octal 36017766, decimal 7,872,502.
What flights does 781FF6 operate?
Mode-S 781FF6 has broadcast 20 distinct callsigns, including CES243, CES785, CES244, CES582, CES249.