Apparatus

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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
No current signal · last broadcast 1d ago
Flights observed
207
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A2E1FD.

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 2 distinct

Callsign Airline Flights Last seen
EJA285 - 205 2026-07-12
N285QS - 2 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 EJA285 - Jul 12, 17:55 UTCJul 12, 19:50 UTC1h 55m
2026-07-12 EJA285 - Jul 12, 15:20 UTCJul 12, 16:20 UTC1h 0m
2026-07-11 EJA285 - Jul 11, 20:15 UTCJul 11, 22:25 UTC2h 10m
2026-07-11 EJA285 - Jul 11, 18:10 UTCJul 11, 18:45 UTC35m
2026-07-11 EJA285 - Jul 11, 15:45 UTCJul 11, 16:15 UTC30m
2026-07-10 EJA285 PHL → MDW Jul 10, 15:50 UTCJul 10, 17:35 UTC1h 45m
2026-07-10 EJA285 - Jul 10, 14:00 UTCJul 10, 14:20 UTC20m
2026-07-08 EJA285 - Jul 8, 15:05 UTCJul 8, 16:00 UTC55m
2026-07-03 EJA285 - Jul 3, 13:45 UTCJul 3, 14:25 UTC40m
2026-07-01 EJA285 - Jul 1, 23:20 UTCJul 1, 23:50 UTC30m
2026-07-01 EJA285 - Jul 1, 20:50 UTCJul 1, 22:00 UTC1h 10m
2026-07-01 EJA285 - Jul 1, 18:35 UTCJul 1, 19:40 UTC1h 5m
2026-07-01 EJA285 - Jul 1, 14:20 UTCJul 1, 17:40 UTC3h 20m
2026-07-01 EJA285 - Jul 1, 00:20 UTCJul 1, 01:05 UTC45m
2026-06-30 EJA285 - Jun 30, 21:35 UTCJun 30, 22:20 UTC45m
2026-06-30 EJA285 - Jun 30, 19:35 UTCJun 30, 20:35 UTC1h 0m
2026-06-30 EJA285 - Jun 30, 18:20 UTCJun 30, 18:30 UTC10m
2026-06-30 EJA285 - Jun 30, 14:45 UTCJun 30, 16:10 UTC1h 25m
2026-06-29 EJA285 - Jun 29, 19:54 UTCJun 29, 21:05 UTC1h 10m
2026-06-29 EJA285 - Jun 29, 13:39 UTCJun 29, 18:19 UTC4h 40m
2026-06-29 EJA285 - Jun 29, 10:59 UTCJun 29, 11:29 UTC30m
2026-06-28 EJA285 - Jun 28, 20:04 UTCJun 28, 20:39 UTC35m
2026-06-28 EJA285 - Jun 28, 17:44 UTCJun 28, 19:14 UTC1h 30m
2026-06-28 EJA285 - Jun 28, 15:49 UTCJun 28, 16:55 UTC1h 5m
2026-06-28 EJA285 - Jun 28, 13:40 UTCJun 28, 14:19 UTC40m
2026-06-25 EJA285 - Jun 25, 15:24 UTCJun 25, 18:24 UTC3h 0m
2026-06-25 EJA285 - Jun 25, 01:40 UTCJun 25, 02:30 UTC50m
2026-06-25 EJA285 - Jun 25, 00:09 UTCJun 25, 00:59 UTC50m
2026-06-24 EJA285 - Jun 24, 18:50 UTCJun 24, 22:35 UTC3h 45m
2026-06-24 EJA285 - Jun 24, 16:24 UTCJun 24, 17:59 UTC1h 35m
2026-06-24 EJA285 - Jun 24, 14:39 UTCJun 24, 15:00 UTC20m
2026-06-23 EJA285 PDK → HPN Jun 23, 23:05 UTCJun 24, 00:49 UTC1h 45m
2026-06-23 EJA285 - Jun 23, 19:24 UTCJun 23, 21:29 UTC2h 5m
2026-06-23 EJA285 IAD → MMU Jun 23, 03:15 UTCJun 23, 04:00 UTC45m
2026-06-21 EJA285 - Jun 21, 21:14 UTCJun 21, 23:05 UTC1h 50m
2026-06-21 EJA285 - Jun 21, 19:24 UTCJun 21, 20:05 UTC40m
2026-06-21 EJA285 ADS → PIE Jun 21, 15:15 UTCJun 21, 17:05 UTC1h 50m
2026-06-20 EJA285 - Jun 20, 19:29 UTCJun 20, 20:34 UTC1h 5m
2026-06-20 EJA285 - Jun 20, 18:34 UTCJun 20, 18:54 UTC20m
2026-06-20 N285QS - Jun 20, 16:14 UTCJun 20, 17:29 UTC1h 15m
2026-06-20 EJA285 - Jun 20, 14:05 UTCJun 20, 14:39 UTC35m
2026-06-19 EJA285 - Jun 19, 19:59 UTCJun 19, 21:49 UTC1h 50m
2026-06-19 EJA285 - Jun 19, 18:49 UTCJun 19, 18:59 UTC10m
2026-06-18 EJA285 - Jun 18, 23:20 UTCJun 19, 17:19 UTC17h 59m
2026-06-18 EJA285 - Jun 18, 21:20 UTCJun 19, 17:19 UTC19h 59m
2026-06-18 EJA285 - Jun 18, 20:05 UTCJun 19, 17:19 UTC21h 14m
2026-06-18 EJA285 - Jun 18, 17:00 UTCJun 18, 18:30 UTC1h 30m
2026-06-17 EJA285 SUA → PBI Jun 17, 18:55 UTCJun 17, 19:10 UTC15m
2026-06-17 EJA285 BOS → SUA Jun 17, 15:15 UTCJun 17, 18:00 UTC2h 45m
2026-06-17 EJA285 IAD → BOS Jun 17, 12:50 UTCJun 17, 13:55 UTC1h 5m

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?
No active broadcast right now. Last signal was 1d ago.
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 2 distinct callsigns, including EJA285, N285QS.