Apparatus

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sensors Mode-S transponder

A57339

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N450MK · operated by NORTH STAR AVIATION INC

Hex
A57339
Octal
51271471
Decimal
10,842,937
Country
US
Tail
N450MK
Type
PA44
Broadcasting now · callsign MVK92 · 3,425 ft
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Current position

A57339 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A57339 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
MVK92 - 21 2026-04-18

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-04-18 MVK92 - Apr 18, 13:30 UTCApr 18, 13:50 UTC20m
2026-04-18 MVK92 - Apr 18, 03:25 UTCApr 18, 04:45 UTC1h 20m
2026-04-18 MVK92 - Apr 18, 03:10 UTCApr 18, 03:20 UTC10m
2026-04-18 MVK92 - Apr 18, 02:15 UTCApr 18, 02:35 UTC20m
2026-04-17 MVK92 - Apr 17, 01:30 UTCApr 17, 02:30 UTC1h 0m
2026-04-16 MVK92 - Apr 16, 23:25 UTCApr 17, 00:10 UTC45m
2026-04-16 MVK92 - Apr 16, 22:34 UTCApr 16, 23:10 UTC35m
2026-04-16 MVK92 - Apr 16, 21:14 UTCApr 16, 21:24 UTC10m
2026-04-16 MVK92 - Apr 16, 19:40 UTCApr 16, 21:10 UTC1h 30m
2026-04-16 MVK92 - Apr 16, 17:44 UTCApr 16, 17:54 UTC10m
2026-04-16 MVK92 - Apr 16, 15:30 UTCApr 16, 15:45 UTC15m
2026-04-16 MVK92 - Apr 16, 13:20 UTCApr 16, 14:00 UTC40m
2026-04-16 MVK92 - Apr 16, 03:09 UTCApr 16, 04:44 UTC1h 35m
2026-04-16 MVK92 - Apr 16, 02:40 UTCApr 16, 03:04 UTC25m
2026-04-16 MVK92 - Apr 16, 00:05 UTCApr 16, 01:05 UTC1h 0m
2026-04-15 MVK92 - Apr 15, 21:50 UTCApr 15, 22:25 UTC35m
2026-04-15 MVK92 - Apr 15, 21:10 UTCApr 15, 21:20 UTC10m
2026-04-15 MVK92 - Apr 15, 18:10 UTCApr 15, 18:50 UTC40m
2026-04-14 MVK92 - Apr 14, 21:45 UTCApr 14, 22:00 UTC15m
2026-04-14 MVK92 - Apr 14, 18:55 UTCApr 14, 19:30 UTC35m
2026-04-13 MVK92 - Apr 13, 18:45 UTCApr 13, 19:25 UTC40m

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 N450MK page for operator, model, and routing details .

Mode-S A57339 frequently asked

What is Mode-S code A57339?
A57339 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N450MK.
Where is Mode-S A57339 registered?
Mode-S code A57339 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 A57339 broadcasting right now?
Yes. Mode-S A57339 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A57339, octal 51271471, decimal 10,842,937.
What flights does A57339 operate?
Mode-S A57339 has broadcast 1 distinct callsign, including MVK92.