Apparatus

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sensors Mode-S transponder

A459A6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N38HF · operated by HELIFLITE SHARES LLC

Hex
A459A6
Octal
51054646
Decimal
10,770,854
Country
US
Tail
N38HF
Type
S76
No current signal · last broadcast Jul 25, 15:05 UTC
Flights observed
371
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 15:05 UTC

Last known position

Most recent position reported by Mode-S A459A6.

Country allocation

The ICAO 24-bit address A459A6 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
N38HF - 371 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N38HF - Jul 25, 14:30 UTCJul 25, 15:05 UTC35m
2026-07-25 N38HF - Jul 25, 14:00 UTCJul 25, 14:10 UTC10m
2026-07-24 N38HF - Jul 24, 22:30 UTCJul 24, 23:35 UTC1h 5m
2026-07-24 N38HF - Jul 24, 18:00 UTCJul 24, 22:20 UTC4h 20m
2026-07-24 N38HF - Jul 24, 17:05 UTCJul 24, 17:15 UTC10m
2026-07-24 N38HF - Jul 24, 13:50 UTCJul 24, 15:40 UTC1h 50m
2026-07-23 N38HF - Jul 23, 23:45 UTCJul 24, 01:20 UTC1h 35m
2026-07-23 N38HF - Jul 23, 22:10 UTCJul 23, 23:15 UTC1h 5m
2026-07-23 N38HF - Jul 23, 19:40 UTCJul 23, 20:50 UTC1h 10m
2026-07-20 N38HF - Jul 20, 23:10 UTCJul 21, 01:35 UTC2h 24m
2026-07-20 N38HF JRB → MMU Jul 20, 22:30 UTCJul 20, 22:50 UTC20m
2026-07-20 N38HF JRA → TSS Jul 20, 19:50 UTCJul 20, 22:25 UTC2h 35m
2026-07-20 N38HF - Jul 20, 17:10 UTCJul 20, 18:30 UTC1h 20m
2026-07-20 N38HF - Jul 20, 13:45 UTCJul 20, 15:30 UTC1h 45m
2026-07-19 N38HF - Jul 19, 13:05 UTCJul 19, 16:35 UTC3h 30m
2026-07-18 N38HF - Jul 18, 19:00 UTCJul 18, 19:20 UTC20m
2026-07-18 N38HF - Jul 18, 14:10 UTCJul 18, 14:30 UTC20m
2026-07-18 N38HF - Jul 18, 12:25 UTCJul 18, 13:25 UTC1h 0m
2026-07-18 N38HF - Jul 18, 11:25 UTCJul 18, 11:35 UTC10m
2026-07-18 N38HF - Jul 18, 10:05 UTCJul 18, 11:20 UTC1h 15m
2026-07-18 N38HF - Jul 18, 02:40 UTCJul 18, 04:10 UTC1h 31m
2026-07-17 N38HF - Jul 17, 23:10 UTCJul 18, 00:39 UTC1h 30m
2026-07-17 N38HF - Jul 17, 17:40 UTCJul 17, 19:05 UTC1h 25m
2026-07-17 N38HF - Jul 17, 16:49 UTCJul 17, 17:15 UTC25m
2026-07-17 N38HF - Jul 17, 15:05 UTCJul 17, 16:04 UTC1h 0m
2026-07-16 N38HF - Jul 16, 21:55 UTCJul 16, 23:15 UTC1h 20m
2026-07-16 N38HF - Jul 16, 19:25 UTCJul 16, 21:10 UTC1h 45m
2026-07-16 N38HF - Jul 16, 17:49 UTCJul 16, 19:10 UTC1h 20m
2026-07-16 N38HF - Jul 16, 17:30 UTCJul 16, 17:40 UTC10m
2026-07-16 N38HF - Jul 16, 14:55 UTCJul 16, 16:15 UTC1h 20m
2026-07-16 N38HF - Jul 16, 13:49 UTCJul 16, 14:00 UTC10m
2026-07-16 N38HF - Jul 16, 13:15 UTCJul 16, 13:45 UTC30m
2026-07-16 N38HF - Jul 16, 12:20 UTCJul 16, 12:55 UTC35m
2026-07-13 N38HF JRA → JRB Jul 13, 11:30 UTCJul 13, 12:40 UTC1h 10m
2026-07-13 N38HF - Jul 13, 00:40 UTCJul 13, 01:45 UTC1h 5m
2026-07-12 N38HF - Jul 12, 20:50 UTCJul 13, 00:01 UTC3h 10m
2026-07-12 N38HF HTO → JRB Jul 12, 20:05 UTCJul 12, 20:45 UTC40m
2026-07-12 N38HF - Jul 12, 16:45 UTCJul 12, 17:45 UTC1h 0m
2026-07-10 N38HF - Jul 10, 21:10 UTCJul 10, 22:25 UTC1h 15m
2026-07-10 N38HF - Jul 10, 19:50 UTCJul 10, 20:55 UTC1h 5m
2026-07-10 N38HF FOK → HPN Jul 10, 18:15 UTCJul 10, 18:45 UTC30m
2026-07-10 N38HF - Jul 10, 14:35 UTCJul 10, 14:55 UTC20m
2026-07-10 N38HF JRB → HPN Jul 10, 13:40 UTCJul 10, 13:55 UTC15m
2026-07-08 N38HF - Jul 8, 22:50 UTCJul 9, 00:20 UTC1h 30m
2026-07-08 N38HF - Jul 8, 19:00 UTCJul 8, 20:25 UTC1h 25m
2026-07-08 N38HF - Jul 8, 16:30 UTCJul 8, 17:55 UTC1h 25m
2026-07-05 N38HF - Jul 5, 20:05 UTCJul 5, 21:45 UTC1h 40m
2026-07-05 N38HF - Jul 5, 19:45 UTCJul 5, 19:50 UTC5m
2026-07-05 N38HF - Jul 5, 15:20 UTCJul 5, 18:55 UTC3h 35m
2026-07-04 N38HF - Jul 4, 19:15 UTCJul 4, 20:50 UTC1h 35m

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 N38HF page for operator, model, and routing details .

Mode-S A459A6 frequently asked

What is Mode-S code A459A6?
A459A6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N38HF.
Where is Mode-S A459A6 registered?
Mode-S code A459A6 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 A459A6 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 15:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A459A6, octal 51054646, decimal 10,770,854.
What flights does A459A6 operate?
Mode-S A459A6 has broadcast 1 distinct callsign, including N38HF.