sensors Mode-S transponder

A2E1FD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N285QS · EMBRAER EMB545 Praetor 500 · operated by NETJETS SALES INC

Hex
A2E1FD
Octal
50560775
Decimal
10,674,685
Country
US
Tail
N285QS
Type
E545
Broadcasting now · callsign EJA285 · 20,775 ft
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Current position

A2E1FD is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2E1FD 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
EJA285 NetJets 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 EJA285 DAL → SGR Apr 13, 08:20 UTCApr 13, 10:40 UTC2h 20m
2026-04-13 EJA285 DAL → SGR Apr 13, 07:55 UTCApr 13, 10:40 UTC2h 45m
2026-04-13 EJA285 DAL → SGR Apr 13, 04:50 UTCApr 13, 08:15 UTC3h 25m
2026-04-13 EJA285 DAL → SGR Apr 13, 02:30 UTCApr 13, 03:40 UTC1h 10m
2026-04-13 EJA285 DAL → SGR Apr 13, 01:15 UTCApr 13, 01:45 UTC30m
2026-04-12 EJA285 DAL → SGR Apr 12, 19:25 UTCApr 12, 19:55 UTC30m

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 N285QS page for operator, model, and routing details .

Mode-S A2E1FD frequently asked

What is Mode-S code A2E1FD?
A2E1FD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N285QS.
Where is Mode-S A2E1FD registered?
Mode-S code A2E1FD 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 A2E1FD broadcasting right now?
Yes. Mode-S A2E1FD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2E1FD, octal 50560775, decimal 10,674,685.
What flights does A2E1FD operate?
Mode-S A2E1FD has broadcast 1 distinct callsign, including EJA285.