Apparatus

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sensors Mode-S transponder

AE275C

ICAO 24-bit transponder address

Currently assigned to 165777

Hex
AE275C
Octal
53423534
Decimal
11,413,340
Tail
165777
Type
H60
No current signal · last broadcast Jul 22, 18:15 UTC
Flights observed
18
Distinct callsigns
1
Country
-
Last broadcast
Jul 22, 18:15 UTC

Last known position

Most recent position reported by Mode-S AE275C.

Callsign history 1 distinct

Callsign Airline Flights Last seen
WD777 - 18 2026-07-22

Recent flights last 18

DateFlightRouteTakeoffLandingDuration
2026-07-22 WD777 NHK → NHK Jul 22, 16:20 UTCJul 22, 18:15 UTC1h 55m
2026-07-20 WD777 - Jul 20, 18:15 UTCJul 20, 20:20 UTC2h 5m
2026-07-20 WD777 - Jul 20, 13:50 UTCJul 20, 16:30 UTC2h 40m
2026-07-08 WD777 - Jul 8, 16:45 UTCJul 8, 17:50 UTC1h 5m
2026-07-07 WD777 - Jul 7, 16:10 UTCJul 7, 17:05 UTC55m
2026-06-19 WD777 - Jun 19, 15:49 UTCJun 19, 16:25 UTC35m
2026-06-17 WD777 - Jun 17, 19:35 UTCJun 17, 19:45 UTC10m
2026-06-17 WD777 - Jun 17, 18:05 UTCJun 17, 18:20 UTC15m
2026-06-09 WD777 NHK → NHK Jun 9, 00:45 UTCJun 9, 02:30 UTC1h 45m
2026-06-04 WD777 NHK → NHK Jun 4, 01:15 UTCJun 4, 01:40 UTC25m
2026-06-03 WD777 NHK → NHK Jun 3, 23:50 UTCJun 4, 01:05 UTC1h 15m
2026-06-03 WD777 NHK → NHK Jun 3, 16:50 UTCJun 3, 17:05 UTC15m
2026-06-03 WD777 - Jun 3, 15:25 UTCJun 3, 16:05 UTC40m
2026-05-19 WD777 - May 19, 15:00 UTCMay 19, 16:05 UTC1h 5m
2026-05-18 WD777 - May 18, 15:10 UTCMay 18, 16:15 UTC1h 5m
2026-05-12 WD777 NHK → NHK May 12, 19:15 UTCMay 12, 20:20 UTC1h 5m
2026-05-07 WD777 NHK → NHK May 7, 14:55 UTCMay 7, 15:35 UTC40m
2026-05-06 WD777 - May 6, 18:00 UTCMay 6, 19:10 UTC1h 10m

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 165777 page for operator, model, and routing details .

Mode-S AE275C frequently asked

What is Mode-S code AE275C?
AE275C is an ICAO 24-bit transponder address. Assigned to 165777.
Is AE275C broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 18:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE275C, octal 53423534, decimal 11,413,340.
What flights does AE275C operate?
Mode-S AE275C has broadcast 1 distinct callsign, including WD777.