Apparatus

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sensors Mode-S transponder

A57A8A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N452LF · operated by LIFE FLIGHT NETWORK LLC

Hex
A57A8A
Octal
51275212
Decimal
10,844,810
Country
US
Tail
N452LF
Type
B407
No current signal · last broadcast 2h ago
Flights observed
178
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A57A8A.

Country allocation

The ICAO 24-bit address A57A8A 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
N452LF - 178 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N452LF - Jul 14, 11:45 UTCJul 14, 11:55 UTC10m
2026-07-14 N452LF - Jul 14, 10:30 UTCJul 14, 11:00 UTC30m
2026-07-14 N452LF - Jul 14, 08:30 UTCJul 14, 08:55 UTC25m
2026-07-14 N452LF - Jul 14, 00:35 UTCJul 14, 01:30 UTC55m
2026-07-13 N452LF - Jul 13, 23:45 UTCJul 14, 00:00 UTC15m
2026-07-13 N452LF - Jul 13, 22:10 UTCJul 13, 22:55 UTC45m
2026-07-13 N452LF - Jul 13, 18:10 UTCJul 13, 20:10 UTC2h 0m
2026-07-13 N452LF - Jul 13, 16:30 UTCJul 13, 16:55 UTC25m
2026-07-13 N452LF - Jul 13, 14:05 UTCJul 13, 14:35 UTC30m
2026-07-12 N452LF - Jul 12, 09:15 UTCJul 12, 10:35 UTC1h 20m
2026-07-12 N452LF - Jul 12, 07:20 UTCJul 12, 08:05 UTC45m
2026-07-12 N452LF - Jul 12, 01:05 UTCJul 12, 01:30 UTC25m
2026-07-11 N452LF - Jul 11, 22:15 UTCJul 11, 22:40 UTC25m
2026-07-11 N452LF - Jul 11, 01:55 UTCJul 11, 03:25 UTC1h 30m
2026-07-10 N452LF - Jul 10, 16:45 UTCJul 10, 17:45 UTC1h 0m
2026-07-10 N452LF - Jul 10, 07:30 UTCJul 10, 08:10 UTC40m
2026-07-10 N452LF - Jul 10, 05:35 UTCJul 10, 06:00 UTC25m
2026-07-10 N452LF - Jul 10, 03:50 UTCJul 10, 04:50 UTC1h 0m
2026-07-10 N452LF - Jul 10, 02:15 UTCJul 10, 02:55 UTC40m
2026-07-09 N452LF - Jul 9, 12:10 UTCJul 9, 12:20 UTC10m
2026-07-09 N452LF - Jul 9, 11:10 UTCJul 9, 11:25 UTC15m
2026-07-08 N452LF - Jul 8, 23:35 UTCJul 9, 00:15 UTC40m
2026-07-08 N452LF - Jul 8, 19:05 UTCJul 8, 19:55 UTC50m
2026-07-08 N452LF - Jul 8, 18:05 UTCJul 8, 18:25 UTC20m
2026-07-08 N452LF - Jul 8, 16:55 UTCJul 8, 17:15 UTC20m
2026-07-08 N452LF - Jul 8, 06:20 UTCJul 8, 07:35 UTC1h 15m
2026-07-08 N452LF - Jul 8, 02:45 UTCJul 8, 03:15 UTC30m
2026-07-07 N452LF - Jul 7, 12:35 UTCJul 7, 12:45 UTC10m
2026-07-07 N452LF - Jul 7, 11:40 UTCJul 7, 12:00 UTC20m
2026-07-07 N452LF - Jul 7, 09:30 UTCJul 7, 09:50 UTC20m
2026-07-07 N452LF - Jul 7, 00:10 UTCJul 7, 01:15 UTC1h 5m
2026-07-06 N452LF - Jul 6, 20:10 UTCJul 6, 20:30 UTC20m
2026-07-06 N452LF - Jul 6, 18:10 UTCJul 6, 19:20 UTC1h 10m
2026-07-06 N452LF - Jul 6, 06:30 UTCJul 6, 07:15 UTC45m
2026-07-06 N452LF - Jul 6, 04:40 UTCJul 6, 05:00 UTC20m
2026-07-06 N452LF - Jul 6, 02:55 UTCJul 6, 03:10 UTC15m
2026-07-06 N452LF - Jul 6, 02:05 UTCJul 6, 02:20 UTC15m
2026-07-05 N452LF - Jul 5, 20:50 UTCJul 5, 21:35 UTC45m
2026-07-05 N452LF - Jul 5, 19:10 UTCJul 5, 19:30 UTC20m
2026-07-05 N452LF - Jul 5, 17:15 UTCJul 5, 17:45 UTC30m
2026-07-05 N452LF - Jul 5, 16:20 UTCJul 5, 16:40 UTC20m
2026-07-05 N452LF - Jul 5, 08:15 UTCJul 5, 08:30 UTC15m
2026-07-05 N452LF - Jul 5, 06:45 UTCJul 5, 07:25 UTC40m
2026-07-05 N452LF - Jul 5, 05:30 UTCJul 5, 05:55 UTC25m
2026-07-05 N452LF - Jul 5, 02:35 UTCJul 5, 03:45 UTC1h 10m
2026-07-05 N452LF - Jul 5, 00:50 UTCJul 5, 01:05 UTC15m
2026-07-04 N452LF - Jul 4, 22:35 UTCJul 5, 00:15 UTC1h 40m
2026-07-04 N452LF - Jul 4, 21:00 UTCJul 4, 21:30 UTC30m
2026-07-04 N452LF - Jul 4, 11:45 UTCJul 4, 13:10 UTC1h 25m
2026-07-04 N452LF - Jul 4, 09:45 UTCJul 4, 10:00 UTC15m

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 N452LF page for operator, model, and routing details .

Mode-S A57A8A frequently asked

What is Mode-S code A57A8A?
A57A8A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N452LF.
Where is Mode-S A57A8A registered?
Mode-S code A57A8A 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 A57A8A broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A57A8A, octal 51275212, decimal 10,844,810.
What flights does A57A8A operate?
Mode-S A57A8A has broadcast 1 distinct callsign, including N452LF.