Apparatus

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sensors Mode-S transponder

A1A46F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N20487 · CESSNA 172 Skyhawk · operated by POINT TO POINT AIR LLC

Hex
A1A46F
Octal
50322157
Decimal
10,593,391
Country
US
Tail
N20487
Type
C172
No current signal · last broadcast 1h ago
Flights observed
120
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A1A46F.

Country allocation

The ICAO 24-bit address A1A46F 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
N20487 - 120 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N20487 - Jul 18, 18:30 UTCJul 18, 19:45 UTC1h 15m
2026-07-17 N20487 - Jul 17, 16:44 UTCJul 17, 22:00 UTC5h 15m
2026-07-17 N20487 BYW → FBS Jul 17, 15:25 UTCJul 17, 15:35 UTC10m
2026-07-17 N20487 - Jul 17, 13:15 UTCJul 17, 13:40 UTC25m
2026-07-16 N20487 - Jul 16, 23:10 UTCJul 17, 01:35 UTC2h 25m
2026-07-16 N20487 - Jul 16, 18:15 UTCJul 16, 19:20 UTC1h 5m
2026-07-16 N20487 - Jul 16, 03:15 UTCJul 16, 03:25 UTC10m
2026-07-16 N20487 - Jul 16, 01:45 UTCJul 16, 02:45 UTC1h 0m
2026-07-15 N20487 - Jul 15, 23:15 UTCJul 16, 00:45 UTC1h 30m
2026-07-15 N20487 - Jul 15, 22:25 UTCJul 15, 22:40 UTC15m
2026-07-15 N20487 - Jul 15, 00:15 UTCJul 15, 01:45 UTC1h 30m
2026-07-14 N20487 - Jul 14, 19:15 UTCJul 14, 22:45 UTC3h 29m
2026-07-14 N20487 - Jul 14, 18:10 UTCJul 14, 18:40 UTC30m
2026-07-13 N20487 - Jul 13, 17:05 UTCJul 13, 18:50 UTC1h 45m
2026-07-13 N20487 - Jul 13, 13:25 UTCJul 13, 14:50 UTC1h 25m
2026-07-12 N20487 - Jul 12, 23:40 UTCJul 13, 00:01 UTC20m
2026-07-12 N20487 - Jul 12, 21:20 UTCJul 12, 23:05 UTC1h 45m
2026-07-12 N20487 - Jul 12, 17:30 UTCJul 12, 17:55 UTC25m
2026-07-12 N20487 - Jul 12, 15:35 UTCJul 12, 16:15 UTC40m
2026-07-12 N20487 - Jul 12, 14:40 UTCJul 12, 15:05 UTC25m
2026-07-11 N20487 - Jul 11, 01:10 UTCJul 11, 03:10 UTC2h 0m
2026-07-10 N20487 - Jul 10, 17:15 UTCJul 10, 18:50 UTC1h 35m
2026-07-10 N20487 - Jul 10, 14:30 UTCJul 10, 16:25 UTC1h 55m
2026-07-09 N20487 - Jul 9, 23:55 UTCJul 10, 03:40 UTC3h 45m
2026-07-08 N20487 - Jul 8, 23:55 UTCJul 9, 01:05 UTC1h 10m
2026-07-08 N20487 - Jul 8, 20:35 UTCJul 8, 23:20 UTC2h 45m
2026-07-05 N20487 - Jul 5, 21:50 UTCJul 5, 23:55 UTC2h 5m
2026-07-05 N20487 - Jul 5, 19:15 UTCJul 5, 19:25 UTC10m
2026-07-05 N20487 - Jul 5, 17:30 UTCJul 5, 18:30 UTC1h 0m
2026-07-04 N20487 - Jul 4, 00:00 UTCJul 4, 00:50 UTC50m
2026-07-03 N20487 - Jul 3, 23:10 UTCJul 3, 23:30 UTC20m
2026-07-03 N20487 - Jul 3, 22:10 UTCJul 3, 22:30 UTC20m
2026-07-03 N20487 - Jul 3, 19:10 UTCJul 3, 21:35 UTC2h 25m
2026-07-03 N20487 - Jul 3, 00:55 UTCJul 3, 01:25 UTC30m
2026-07-02 N20487 - Jul 2, 20:45 UTCJul 2, 23:55 UTC3h 10m
2026-07-01 N20487 - Jul 1, 16:05 UTCJul 1, 22:35 UTC6h 30m
2026-06-30 N20487 - Jun 30, 14:40 UTCJun 30, 16:05 UTC1h 25m
2026-06-30 N20487 - Jun 30, 05:15 UTCJun 30, 05:30 UTC15m
2026-06-30 N20487 - Jun 30, 01:14 UTCJun 30, 03:15 UTC2h 0m
2026-06-29 N20487 - Jun 29, 18:55 UTCJun 29, 20:30 UTC1h 35m
2026-06-29 N20487 - Jun 29, 16:15 UTCJun 29, 17:30 UTC1h 15m
2026-06-28 N20487 - Jun 28, 23:09 UTCJun 29, 00:54 UTC1h 45m
2026-06-28 N20487 - Jun 28, 22:10 UTCJun 28, 22:34 UTC25m
2026-06-26 N20487 - Jun 26, 20:00 UTCJun 26, 20:44 UTC45m
2026-06-26 N20487 - Jun 26, 03:29 UTCJun 26, 03:39 UTC10m
2026-06-26 N20487 - Jun 26, 00:30 UTCJun 26, 02:54 UTC2h 25m
2026-06-25 N20487 - Jun 25, 23:14 UTCJun 25, 23:49 UTC35m
2026-06-25 N20487 - Jun 25, 20:14 UTCJun 25, 21:40 UTC1h 25m
2026-06-25 N20487 - Jun 25, 19:34 UTCJun 25, 19:44 UTC10m
2026-06-25 N20487 - Jun 25, 18:15 UTCJun 25, 18:39 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 N20487 page for operator, model, and routing details .

Mode-S A1A46F frequently asked

What is Mode-S code A1A46F?
A1A46F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N20487.
Where is Mode-S A1A46F registered?
Mode-S code A1A46F 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 A1A46F broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1A46F, octal 50322157, decimal 10,593,391.
What flights does A1A46F operate?
Mode-S A1A46F has broadcast 1 distinct callsign, including N20487.