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sensors Mode-S transponder

A87F6F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N647CA · operated by BILLI THE FLYING CAT LLC

Hex
A87F6F
Octal
52077557
Decimal
11,042,671
Country
US
Tail
N647CA
Broadcasting now · callsign CTX75 · 1,300 ft
Flights observed
431
Distinct callsigns
1
Country
US
Last broadcast
4d ago

Current position

A87F6F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A87F6F falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 1 distinct

Callsign Airline Flights Last seen
CTX75 - 431 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CTX75 - Jul 26, 20:55 UTCJul 26, 21:25 UTC30m
2026-07-26 CTX75 - Jul 26, 19:40 UTCJul 26, 20:15 UTC35m
2026-07-26 CTX75 - Jul 26, 18:10 UTCJul 26, 18:40 UTC30m
2026-07-26 CTX75 - Jul 26, 16:25 UTCJul 26, 17:20 UTC55m
2026-07-25 CTX75 - Jul 25, 22:30 UTCJul 25, 23:25 UTC55m
2026-07-17 CTX75 PDK → PDK Jul 17, 17:35 UTCJul 17, 17:55 UTC20m
2026-07-17 CTX75 - Jul 17, 13:35 UTCJul 17, 14:35 UTC1h 0m
2026-07-17 CTX75 - Jul 17, 11:39 UTCJul 17, 12:50 UTC1h 10m
2026-07-16 CTX75 - Jul 16, 15:35 UTCJul 16, 16:49 UTC1h 15m
2026-07-16 CTX75 - Jul 16, 13:10 UTCJul 16, 13:49 UTC40m
2026-07-15 CTX75 - Jul 15, 18:55 UTCJul 15, 19:45 UTC50m
2026-07-14 CTX75 - Jul 14, 17:55 UTCJul 14, 18:50 UTC55m
2026-07-14 CTX75 - Jul 14, 15:45 UTCJul 14, 16:35 UTC50m
2026-07-11 CTX75 - Jul 11, 16:55 UTCJul 11, 17:25 UTC30m
2026-07-11 CTX75 - Jul 11, 15:50 UTCJul 11, 16:15 UTC25m
2026-07-11 CTX75 - Jul 11, 14:25 UTCJul 11, 15:00 UTC35m
2026-07-11 CTX75 - Jul 11, 12:15 UTCJul 11, 13:25 UTC1h 10m
2026-07-11 CTX75 - Jul 11, 01:45 UTCJul 11, 03:30 UTC1h 45m
2026-07-11 CTX75 - Jul 11, 00:00 UTCJul 11, 00:25 UTC25m
2026-07-10 CTX75 - Jul 10, 21:55 UTCJul 10, 22:35 UTC40m
2026-07-10 CTX75 - Jul 10, 15:00 UTCJul 10, 17:50 UTC2h 50m
2026-07-10 CTX75 - Jul 10, 11:35 UTCJul 10, 13:50 UTC2h 15m
2026-07-09 CTX75 - Jul 9, 23:35 UTCJul 10, 00:10 UTC35m
2026-07-09 CTX75 - Jul 9, 17:30 UTCJul 9, 18:00 UTC30m
2026-07-09 CTX75 - Jul 9, 16:00 UTCJul 9, 16:30 UTC30m
2026-07-09 CTX75 - Jul 9, 14:45 UTCJul 9, 15:25 UTC40m
2026-07-08 CTX75 - Jul 8, 23:45 UTCJul 9, 03:10 UTC3h 25m
2026-07-08 CTX75 - Jul 8, 21:30 UTCJul 8, 22:15 UTC45m
2026-07-08 CTX75 - Jul 8, 20:10 UTCJul 8, 20:45 UTC35m
2026-07-08 CTX75 - Jul 8, 19:00 UTCJul 8, 19:20 UTC20m
2026-07-08 CTX75 - Jul 8, 17:25 UTCJul 8, 18:05 UTC40m
2026-07-08 CTX75 - Jul 8, 15:30 UTCJul 8, 16:50 UTC1h 20m
2026-07-08 CTX75 - Jul 8, 11:50 UTCJul 8, 14:00 UTC2h 10m
2026-07-07 CTX75 - Jul 7, 22:15 UTCJul 7, 23:45 UTC1h 30m
2026-07-07 CTX75 - Jul 7, 16:20 UTCJul 7, 17:05 UTC45m
2026-07-07 CTX75 - Jul 7, 14:35 UTCJul 7, 15:20 UTC45m
2026-07-07 CTX75 - Jul 7, 13:00 UTCJul 7, 13:40 UTC40m
2026-07-07 CTX75 - Jul 7, 11:30 UTCJul 7, 12:30 UTC1h 0m
2026-07-06 CTX75 - Jul 6, 18:25 UTCJul 6, 19:10 UTC45m
2026-07-06 CTX75 - Jul 6, 15:35 UTCJul 6, 16:15 UTC40m
2026-07-06 CTX75 - Jul 6, 14:25 UTCJul 6, 14:50 UTC25m
2026-07-06 CTX75 - Jul 6, 13:10 UTCJul 6, 13:55 UTC45m
2026-07-06 CTX75 - Jul 6, 11:25 UTCJul 6, 12:20 UTC55m
2026-07-05 CTX75 - Jul 5, 20:20 UTCJul 5, 21:00 UTC40m
2026-07-05 CTX75 - Jul 5, 18:55 UTCJul 5, 19:20 UTC25m
2026-07-05 CTX75 - Jul 5, 14:05 UTCJul 5, 16:10 UTC2h 5m
2026-07-05 CTX75 - Jul 5, 10:55 UTCJul 5, 12:50 UTC1h 55m
2026-07-04 CTX75 - Jul 4, 16:50 UTCJul 4, 17:45 UTC55m
2026-07-04 CTX75 - Jul 4, 15:35 UTCJul 4, 16:15 UTC40m
2026-07-04 CTX75 - Jul 4, 13:25 UTCJul 4, 14:45 UTC1h 20m

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 N647CA page for operator, model, and routing details .

Mode-S A87F6F frequently asked

What is Mode-S code A87F6F?
A87F6F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N647CA.
Where is Mode-S A87F6F registered?
Mode-S code A87F6F is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A87F6F broadcasting right now?
Yes. Mode-S A87F6F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A87F6F, octal 52077557, decimal 11,042,671.
What flights does A87F6F operate?
Mode-S A87F6F has broadcast 1 distinct callsign, including CTX75.