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
Broadcasting now · callsign CES224 · 36,000 ft
Flights observed
105
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Current position

781FF6 is currently broadcasting. Map zoomed to live position.

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
CES582 China Eastern Airlines 12 2026-05-29
CES785 China Eastern Airlines 11 2026-05-20
CES581 China Eastern Airlines 10 2026-05-28
CES243 China Eastern Airlines 8 2026-05-17
CES786 China Eastern Airlines 6 2026-05-21
CES244 China Eastern Airlines 6 2026-05-18
CES561 China Eastern Airlines 5 2026-05-16
CES736 China Eastern Airlines 4 2026-05-01
CES710 China Eastern Airlines 4 2026-05-27
CES249 China Eastern Airlines 4 2026-05-25
CES217 China Eastern Airlines 4 2026-05-12
CES787 China Eastern Airlines 3 2026-05-02
CES752 - 3 2026-04-23
CES735 China Eastern Airlines 3 2026-04-30
CES7236 China Eastern Airlines 3 2026-05-20
CES7235 China Eastern Airlines 3 2026-05-19
CES562 China Eastern Airlines 3 2026-05-04
CES250 China Eastern Airlines 3 2026-05-25
CES223 China Eastern Airlines 2 2026-05-29
CES218 China Eastern Airlines 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CES223 PVG → CAI May 29, 23:05 UTCMay 30, 05:45 UTC6h 40m
2026-05-29 CES223 PVG → CAI May 29, 05:35 UTCMay 30, 05:30 UTC23h 55m
2026-05-29 CES582 YVR → PVG May 29, 04:30 UTCMay 29, 23:20 UTC18h 50m
2026-05-28 CES582 YVR → PVG May 28, 23:35 UTCMay 29, 23:20 UTC23h 45m
2026-05-28 CES582 YVR → PVG May 28, 19:50 UTCMay 29, 06:05 UTC10h 15m
2026-05-28 CES581 PVG → YVR May 28, 06:50 UTCMay 28, 15:45 UTC8h 55m
2026-05-27 CES581 PVG → YVR May 27, 16:10 UTCMay 28, 15:30 UTC23h 20m
2026-05-27 CES710 MAD → PVG May 27, 13:40 UTCMay 28, 08:05 UTC18h 25m
2026-05-27 CES710 MAD → PVG May 27, 11:35 UTCMay 28, 08:05 UTC20h 30m
2026-05-27 CES710 MAD → PVG May 27, 09:35 UTCMay 28, 08:05 UTC22h 30m
2026-05-27 CES710 MAD → PVG May 27, 09:20 UTCMay 28, 07:30 UTC22h 10m
2026-05-26 CES709 PVG → MAD May 26, 18:24 UTCMay 27, 05:35 UTC11h 10m
2026-05-25 CES250 BCN → PVG May 25, 09:30 UTCMay 25, 16:45 UTC7h 15m
2026-05-25 CES249 PVG → BCN May 25, 01:55 UTCMay 25, 05:30 UTC3h 35m
2026-05-23 CES250 BCN → PVG May 23, 09:25 UTCMay 23, 16:45 UTC7h 20m
2026-05-22 CES249 PVG → BCN May 22, 21:55 UTCMay 23, 05:35 UTC7h 40m
2026-05-21 CES786 VCE → PVG May 21, 09:55 UTCMay 21, 16:35 UTC6h 40m
2026-05-20 CES785 PVG → VCE May 20, 18:55 UTCMay 21, 04:40 UTC9h 45m
2026-05-20 CES785 PVG → VCE May 20, 04:30 UTCMay 21, 03:30 UTC23h 1m
2026-05-20 CES7236 HAN → PVG May 20, 01:35 UTCMay 21, 01:30 UTC23h 56m
2026-05-19 CES7236 HAN → PVG May 19, 23:35 UTCMay 20, 22:35 UTC23h 1m
2026-05-19 CES7236 HAN → PVG May 19, 22:00 UTCMay 20, 19:15 UTC21h 16m
2026-05-19 CES7235 PVG → HAN May 19, 07:45 UTCMay 19, 18:55 UTC11h 10m
2026-05-18 CES7235 PVG → HAN May 18, 17:35 UTCMay 19, 17:30 UTC23h 54m
2026-05-18 CES7235 PVG → HAN May 18, 15:35 UTCMay 19, 15:30 UTC23h 54m
2026-05-18 CES244 MXP → PVG May 18, 13:35 UTCMay 19, 11:30 UTC21h 54m
2026-05-18 CES244 MXP → PVG May 18, 11:55 UTCMay 19, 11:30 UTC23h 34m
2026-05-17 CES243 PVG → MXP May 17, 19:15 UTCMay 18, 05:30 UTC10h 15m
2026-05-17 CES243 PVG → MXP May 17, 01:35 UTCMay 18, 01:30 UTC23h 55m
2026-05-17 CES243 PVG → MXP May 17, 01:15 UTCMay 17, 23:05 UTC21h 50m
2026-05-16 CES561 PVG → SYD May 16, 06:55 UTCMay 16, 22:35 UTC15h 40m
2026-05-15 CES250 BCN → PVG May 15, 09:40 UTCMay 16, 05:00 UTC19h 19m
2026-05-14 CES249 PVG → BCN May 14, 21:25 UTCMay 15, 05:10 UTC7h 45m
2026-05-14 CES249 PVG → BCN May 14, 05:20 UTCMay 15, 03:30 UTC22h 10m
2026-05-13 CES218 GVA → PVG May 13, 10:20 UTCMay 14, 03:50 UTC17h 30m
2026-05-12 CES217 PVG → GVA May 12, 21:05 UTCMay 13, 05:25 UTC8h 20m
2026-05-12 CES217 PVG → GVA May 12, 05:35 UTCMay 13, 05:25 UTC23h 50m
2026-05-12 CES217 PVG → GVA May 12, 05:20 UTCMay 13, 03:30 UTC22h 10m
2026-05-11 CES582 YVR → PVG May 11, 22:05 UTCMay 12, 21:20 UTC23h 15m
2026-05-11 CES582 YVR → PVG May 11, 20:55 UTCMay 12, 06:50 UTC9h 55m
2026-05-11 CES581 PVG → YVR May 11, 06:45 UTCMay 11, 16:05 UTC9h 20m
2026-05-10 CES581 PVG → YVR May 10, 15:35 UTCMay 11, 15:30 UTC23h 55m
2026-05-10 CES581 PVG → YVR May 10, 13:35 UTCMay 11, 13:30 UTC23h 55m
2026-05-10 CES786 VCE → PVG May 10, 11:35 UTCMay 11, 08:05 UTC20h 30m
2026-05-10 CES786 VCE → PVG May 10, 09:55 UTCMay 11, 08:05 UTC22h 10m
2026-05-09 CES785 PVG → VCE May 9, 09:35 UTCMay 10, 05:00 UTC19h 25m
2026-05-09 CES785 PVG → VCE May 9, 08:35 UTCMay 10, 05:00 UTC20h 25m
2026-05-09 CES521 PVG → NRT May 9, 05:15 UTCMay 9, 06:40 UTC1h 25m
2026-05-08 CES582 YVR → PVG May 8, 05:35 UTCMay 9, 05:30 UTC23h 55m
2026-05-07 CES582 YVR → PVG May 7, 19:55 UTCMay 8, 06:35 UTC10h 40m

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?
Yes. Mode-S 781FF6 is currently airborne.
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 CES582, CES785, CES581, CES243, CES786.