Apparatus

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sensors Mode-S transponder

A84057

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N63017 · CESSNA 172 Skyhawk · operated by MELBON LLC

Hex
A84057
Octal
52040127
Decimal
11,026,519
Country
US
Tail
N63017
Type
C172
Broadcasting now · callsign N63017 · 1,700 ft
Flights observed
131
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Current position

A84057 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A84057 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
N63017 - 131 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N63017 - Jul 18, 13:25 UTCJul 18, 14:10 UTC45m
2026-07-17 N63017 - Jul 17, 23:25 UTCJul 17, 23:45 UTC20m
2026-07-17 N63017 - Jul 17, 19:20 UTCJul 17, 20:25 UTC1h 5m
2026-07-16 N63017 - Jul 16, 19:14 UTCJul 16, 19:40 UTC25m
2026-07-16 N63017 - Jul 16, 16:19 UTCJul 16, 18:10 UTC1h 50m
2026-07-15 N63017 - Jul 15, 11:45 UTCJul 15, 12:05 UTC20m
2026-07-10 N63017 - Jul 10, 03:15 UTCJul 10, 05:15 UTC2h 0m
2026-07-10 N63017 - Jul 10, 01:40 UTCJul 10, 02:20 UTC40m
2026-07-09 N63017 - Jul 9, 23:50 UTCJul 10, 00:50 UTC1h 0m
2026-07-09 N63017 - Jul 9, 20:50 UTCJul 9, 23:00 UTC2h 10m
2026-07-09 N63017 - Jul 9, 19:50 UTCJul 9, 20:15 UTC25m
2026-07-09 N63017 - Jul 9, 15:30 UTCJul 9, 17:25 UTC1h 55m
2026-07-09 N63017 - Jul 9, 12:25 UTCJul 9, 14:45 UTC2h 20m
2026-07-08 N63017 - Jul 8, 16:00 UTCJul 8, 18:05 UTC2h 5m
2026-07-07 N63017 - Jul 7, 21:25 UTCJul 7, 21:35 UTC10m
2026-07-07 N63017 - Jul 7, 17:35 UTCJul 7, 18:05 UTC30m
2026-07-07 N63017 - Jul 7, 15:55 UTCJul 7, 17:00 UTC1h 5m
2026-07-06 N63017 - Jul 6, 23:40 UTCJul 6, 23:50 UTC10m
2026-07-06 N63017 - Jul 6, 22:20 UTCJul 6, 23:05 UTC45m
2026-07-06 N63017 - Jul 6, 19:05 UTCJul 6, 20:05 UTC1h 0m
2026-07-06 N63017 - Jul 6, 11:55 UTCJul 6, 12:15 UTC20m
2026-07-04 N63017 - Jul 4, 17:45 UTCJul 4, 18:40 UTC55m
2026-07-02 N63017 - Jul 2, 23:30 UTCJul 2, 23:55 UTC25m
2026-06-29 N63017 - Jun 29, 11:35 UTCJun 29, 11:50 UTC15m
2026-06-29 N63017 - Jun 29, 00:49 UTCJun 29, 01:20 UTC30m
2026-06-28 N63017 - Jun 28, 23:29 UTCJun 28, 23:50 UTC20m
2026-06-28 N63017 - Jun 28, 22:15 UTCJun 28, 22:39 UTC25m
2026-06-28 N63017 - Jun 28, 19:55 UTCJun 28, 21:10 UTC1h 15m
2026-06-27 N63017 - Jun 27, 18:45 UTCJun 27, 19:05 UTC20m
2026-06-27 N63017 - Jun 27, 16:59 UTCJun 27, 17:25 UTC25m
2026-06-26 N63017 - Jun 26, 13:15 UTCJun 26, 13:40 UTC25m
2026-06-25 N63017 - Jun 25, 21:20 UTCJun 25, 22:14 UTC55m
2026-06-25 N63017 - Jun 25, 18:29 UTCJun 25, 19:15 UTC45m
2026-06-25 N63017 - Jun 25, 16:55 UTCJun 25, 17:49 UTC55m
2026-06-25 N63017 - Jun 25, 15:15 UTCJun 25, 16:20 UTC1h 5m
2026-06-25 N63017 - Jun 25, 13:05 UTCJun 25, 14:20 UTC1h 15m
2026-06-24 N63017 - Jun 24, 23:14 UTCJun 24, 23:45 UTC30m
2026-06-24 N63017 - Jun 24, 17:05 UTCJun 24, 18:15 UTC1h 10m
2026-06-24 N63017 - Jun 24, 14:29 UTCJun 24, 15:39 UTC1h 10m
2026-06-23 N63017 - Jun 23, 18:14 UTCJun 23, 19:24 UTC1h 10m
2026-06-23 N63017 - Jun 23, 13:50 UTCJun 23, 14:29 UTC40m
2026-06-23 N63017 - Jun 23, 10:55 UTCJun 23, 11:35 UTC40m
2026-06-23 N63017 - Jun 23, 09:40 UTCJun 23, 09:59 UTC20m
2026-06-22 N63017 - Jun 22, 17:44 UTCJun 22, 19:49 UTC2h 5m
2026-06-21 N63017 - Jun 21, 20:14 UTCJun 21, 21:34 UTC1h 20m
2026-06-18 N63017 - Jun 18, 13:55 UTCJun 18, 15:15 UTC1h 20m
2026-06-17 N63017 - Jun 17, 22:00 UTCJun 17, 22:20 UTC20m
2026-06-17 N63017 - Jun 17, 18:25 UTCJun 17, 18:56 UTC30m
2026-06-17 N63017 - Jun 17, 16:40 UTCJun 17, 17:00 UTC20m
2026-06-17 N63017 - Jun 17, 14:10 UTCJun 17, 14:30 UTC20m

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 N63017 page for operator, model, and routing details .

Mode-S A84057 frequently asked

What is Mode-S code A84057?
A84057 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N63017.
Where is Mode-S A84057 registered?
Mode-S code A84057 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 A84057 broadcasting right now?
Yes. Mode-S A84057 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84057, octal 52040127, decimal 11,026,519.
What flights does A84057 operate?
Mode-S A84057 has broadcast 1 distinct callsign, including N63017.