Apparatus

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sensors Mode-S transponder

A6FE45

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N55NG · EMBRAER EMB545 Praetor 500 · operated by OLYMPUS EQUIPMENT LLC

Hex
A6FE45
Octal
51577105
Decimal
10,944,069
Country
US
Tail
N55NG
Type
E545
No current signal · last broadcast 12d ago
Flights observed
22
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S A6FE45.

Country allocation

The ICAO 24-bit address A6FE45 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
PXT55 - 22 2026-07-14

Recent flights last 22

DateFlightRouteTakeoffLandingDuration
2026-07-14 PXT55 - Jul 14, 12:50 UTCJul 14, 13:15 UTC25m
2026-07-13 PXT55 - Jul 13, 17:10 UTCJul 13, 18:50 UTC1h 40m
2026-07-12 PXT55 - Jul 12, 19:20 UTCJul 13, 18:50 UTC23h 30m
2026-07-12 PXT55 - Jul 12, 17:20 UTCJul 13, 17:15 UTC23h 55m
2026-07-12 PXT55 - Jul 12, 15:25 UTCJul 12, 20:50 UTC5h 25m
2026-06-23 PXT55 - Jun 23, 21:39 UTCJun 24, 00:25 UTC2h 45m
2026-06-23 PXT55 - Jun 23, 14:35 UTCJun 23, 16:59 UTC2h 25m
2026-06-21 PXT55 HSH → SNA Jun 21, 20:05 UTCJun 21, 20:50 UTC45m
2026-06-19 PXT55 - Jun 19, 17:14 UTCJun 19, 17:59 UTC45m
2026-06-14 PXT55 - Jun 14, 17:10 UTCJun 14, 21:45 UTC4h 35m
2026-06-12 PXT55 - Jun 12, 16:40 UTCJun 12, 20:10 UTC3h 30m
2026-06-07 PXT55 - Jun 7, 18:25 UTCJun 8, 00:55 UTC6h 30m
2026-06-03 PXT55 - Jun 3, 15:05 UTCJun 3, 20:15 UTC5h 10m
2026-05-15 PXT55 ORL → SNA May 15, 16:35 UTCMay 15, 21:40 UTC5h 5m
2026-05-13 PXT55 - May 13, 14:25 UTCMay 13, 18:45 UTC4h 20m
2026-05-09 PXT55 - May 9, 17:49 UTCMay 9, 20:34 UTC2h 45m
2026-05-07 PXT55 - May 7, 17:15 UTCMay 7, 19:45 UTC2h 30m
2026-04-26 PXT55 - Apr 26, 22:35 UTCApr 26, 23:10 UTC35m
2026-04-26 PXT55 - Apr 26, 16:45 UTCApr 26, 17:15 UTC30m
2026-04-25 PXT55 - Apr 25, 22:05 UTCApr 25, 22:25 UTC20m
2026-04-19 PXT55 - Apr 19, 22:10 UTCApr 20, 00:05 UTC1h 55m
2026-04-16 PXT55 - Apr 16, 19:30 UTCApr 16, 20:45 UTC1h 15m

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 N55NG page for operator, model, and routing details .

Mode-S A6FE45 frequently asked

What is Mode-S code A6FE45?
A6FE45 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N55NG.
Where is Mode-S A6FE45 registered?
Mode-S code A6FE45 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 A6FE45 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6FE45, octal 51577105, decimal 10,944,069.
What flights does A6FE45 operate?
Mode-S A6FE45 has broadcast 1 distinct callsign, including PXT55.