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sensors Mode-S transponder

ABF444

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N87CW · PIPER PA-30 Twin Comanche · operated by ANGELS WITHOUT BORDERS LLC

Hex
ABF444
Octal
52772104
Decimal
11,269,188
Country
US
Tail
N87CW
Type
PA30
No current signal · last broadcast 19d ago
Flights observed
171
Distinct callsigns
1
Country
US
Last broadcast
19d ago

Last known position

Most recent position reported by Mode-S ABF444.

Country allocation

The ICAO 24-bit address ABF444 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
N87CW - 171 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N87CW - Jul 14, 18:55 UTCJul 14, 20:30 UTC1h 35m
2026-07-11 N87CW - Jul 11, 19:30 UTCJul 11, 19:50 UTC20m
2026-07-08 N87CW - Jul 8, 03:45 UTCJul 8, 04:05 UTC20m
2026-07-06 N87CW - Jul 6, 18:25 UTCJul 6, 20:25 UTC2h 0m
2026-07-05 N87CW - Jul 5, 19:15 UTCJul 5, 21:05 UTC1h 50m
2026-07-03 N87CW - Jul 3, 23:10 UTCJul 3, 23:40 UTC30m
2026-07-03 N87CW - Jul 3, 21:35 UTCJul 3, 22:35 UTC1h 0m
2026-06-26 N87CW - Jun 26, 15:34 UTCJun 26, 16:14 UTC40m
2026-06-26 N87CW - Jun 26, 14:59 UTCJun 26, 15:29 UTC30m
2026-06-25 N87CW - Jun 25, 13:59 UTCJun 25, 14:09 UTC10m
2026-06-25 N87CW - Jun 25, 12:54 UTCJun 25, 13:50 UTC55m
2026-06-25 N87CW - Jun 25, 12:30 UTCJun 25, 12:35 UTC5m
2026-06-24 N87CW - Jun 24, 14:55 UTCJun 24, 15:05 UTC10m
2026-06-24 N87CW - Jun 24, 13:24 UTCJun 24, 14:29 UTC1h 5m
2026-06-24 N87CW - Jun 24, 13:00 UTCJun 24, 13:10 UTC10m
2026-06-24 N87CW - Jun 24, 12:44 UTCJun 24, 12:54 UTC10m
2026-06-23 N87CW - Jun 23, 17:39 UTCJun 23, 18:34 UTC55m
2026-06-23 N87CW - Jun 23, 17:15 UTCJun 23, 17:30 UTC15m
2026-06-23 N87CW - Jun 23, 13:09 UTCJun 23, 13:59 UTC50m
2026-06-22 N87CW - Jun 22, 12:40 UTCJun 22, 13:44 UTC1h 5m
2026-06-21 N87CW - Jun 21, 13:29 UTCJun 21, 14:19 UTC50m
2026-06-21 N87CW - Jun 21, 13:04 UTCJun 21, 13:15 UTC10m
2026-06-21 N87CW - Jun 21, 12:35 UTCJun 21, 12:49 UTC15m
2026-06-21 N87CW - Jun 21, 00:04 UTCJun 21, 01:10 UTC1h 5m
2026-06-12 N87CW - Jun 12, 15:35 UTCJun 12, 16:30 UTC55m
2026-06-12 N87CW - Jun 12, 15:20 UTCJun 12, 15:30 UTC10m
2026-06-11 N87CW - Jun 11, 13:45 UTCJun 11, 14:40 UTC55m
2026-06-11 N87CW - Jun 11, 13:30 UTCJun 11, 13:35 UTC5m
2026-06-11 N87CW - Jun 11, 13:05 UTCJun 11, 13:25 UTC20m
2026-06-11 N87CW - Jun 11, 12:40 UTCJun 11, 12:50 UTC10m
2026-06-10 N87CW - Jun 10, 21:20 UTCJun 10, 21:50 UTC30m
2026-06-10 N87CW - Jun 10, 20:45 UTCJun 10, 20:55 UTC10m
2026-06-10 N87CW - Jun 10, 19:50 UTCJun 10, 20:40 UTC50m
2026-06-10 N87CW - Jun 10, 14:25 UTCJun 10, 15:25 UTC1h 0m
2026-06-10 N87CW - Jun 10, 14:10 UTCJun 10, 14:15 UTC5m
2026-06-09 N87CW - Jun 9, 20:55 UTCJun 9, 21:30 UTC35m
2026-06-09 N87CW - Jun 9, 20:20 UTCJun 9, 20:40 UTC20m
2026-06-09 N87CW - Jun 9, 20:05 UTCJun 9, 20:15 UTC10m
2026-06-09 N87CW - Jun 9, 19:50 UTCJun 9, 20:00 UTC10m
2026-06-09 N87CW - Jun 9, 12:50 UTCJun 9, 13:15 UTC25m
2026-06-08 N87CW - Jun 8, 16:15 UTCJun 8, 16:45 UTC30m
2026-06-08 N87CW - Jun 8, 14:55 UTCJun 8, 15:04 UTC10m
2026-06-08 N87CW - Jun 8, 13:50 UTCJun 8, 14:50 UTC1h 0m
2026-06-08 N87CW - Jun 8, 13:25 UTCJun 8, 13:45 UTC20m
2026-06-08 N87CW - Jun 8, 13:10 UTCJun 8, 13:20 UTC10m
2026-06-07 N87CW - Jun 7, 14:20 UTCJun 7, 14:45 UTC25m
2026-06-07 N87CW - Jun 7, 14:05 UTCJun 7, 14:10 UTC5m
2026-06-07 N87CW - Jun 7, 13:45 UTCJun 7, 13:55 UTC10m
2026-06-07 N87CW - Jun 7, 13:30 UTCJun 7, 13:35 UTC5m
2026-06-06 N87CW - Jun 6, 20:35 UTCJun 6, 21:00 UTC25m

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 N87CW page for operator, model, and routing details .

Mode-S ABF444 frequently asked

What is Mode-S code ABF444?
ABF444 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N87CW.
Where is Mode-S ABF444 registered?
Mode-S code ABF444 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 ABF444 broadcasting right now?
No active broadcast right now. Last signal was 19d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABF444, octal 52772104, decimal 11,269,188.
What flights does ABF444 operate?
Mode-S ABF444 has broadcast 1 distinct callsign, including N87CW.