Apparatus

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sensors Mode-S transponder

A4EE93

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N417EP · PIPER PA-44 Seminole · operated by EPIC AVIATION INC

Hex
A4EE93
Octal
51167223
Decimal
10,808,979
Country
US
Tail
N417EP
Type
PA44
Broadcasting now · callsign EPI684 · 725 ft
Flights observed
318
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Current position

A4EE93 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A4EE93 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
EPI684 - 318 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 EPI684 - Jul 15, 17:25 UTCJul 15, 18:20 UTC55m
2026-07-15 EPI684 - Jul 15, 15:15 UTCJul 15, 16:05 UTC50m
2026-07-15 EPI684 - Jul 15, 13:25 UTCJul 15, 14:25 UTC1h 0m
2026-07-15 EPI684 - Jul 15, 11:05 UTCJul 15, 12:15 UTC1h 10m
2026-07-15 EPI684 - Jul 15, 01:30 UTCJul 15, 01:40 UTC10m
2026-07-14 EPI684 - Jul 14, 16:10 UTCJul 14, 16:50 UTC40m
2026-07-14 EPI684 - Jul 14, 14:45 UTCJul 14, 15:10 UTC25m
2026-07-14 EPI684 - Jul 14, 13:10 UTCJul 14, 13:45 UTC35m
2026-07-14 EPI684 - Jul 14, 11:35 UTCJul 14, 12:00 UTC25m
2026-07-13 EPI684 - Jul 13, 18:55 UTCJul 13, 19:40 UTC45m
2026-07-13 EPI684 - Jul 13, 15:00 UTCJul 13, 15:40 UTC40m
2026-07-13 EPI684 - Jul 13, 11:05 UTCJul 13, 12:20 UTC1h 15m
2026-07-13 EPI684 - Jul 13, 01:55 UTCJul 13, 03:45 UTC1h 50m
2026-07-12 EPI684 - Jul 12, 22:50 UTCJul 12, 23:40 UTC50m
2026-07-12 EPI684 - Jul 12, 14:05 UTCJul 12, 14:50 UTC45m
2026-07-12 EPI684 - Jul 12, 12:25 UTCJul 12, 13:05 UTC40m
2026-07-12 EPI684 - Jul 12, 00:55 UTCJul 12, 02:50 UTC1h 55m
2026-07-11 EPI684 - Jul 11, 20:25 UTCJul 11, 22:15 UTC1h 50m
2026-07-11 EPI684 - Jul 11, 18:30 UTCJul 11, 19:30 UTC1h 0m
2026-07-11 EPI684 - Jul 11, 16:40 UTCJul 11, 17:50 UTC1h 10m
2026-07-11 EPI684 - Jul 11, 14:25 UTCJul 11, 15:25 UTC1h 0m
2026-07-11 EPI684 - Jul 11, 02:20 UTCJul 11, 03:15 UTC55m
2026-07-10 EPI684 - Jul 10, 22:20 UTCJul 10, 23:25 UTC1h 5m
2026-07-10 EPI684 - Jul 10, 18:10 UTCJul 10, 19:20 UTC1h 10m
2026-07-10 EPI684 - Jul 10, 15:40 UTCJul 10, 16:35 UTC55m
2026-07-10 EPI684 - Jul 10, 14:05 UTCJul 10, 14:35 UTC30m
2026-07-10 EPI684 - Jul 10, 11:35 UTCJul 10, 12:35 UTC1h 0m
2026-07-10 EPI684 - Jul 10, 01:45 UTCJul 10, 02:15 UTC30m
2026-07-09 EPI684 - Jul 9, 23:35 UTCJul 10, 00:05 UTC30m
2026-07-09 EPI684 - Jul 9, 21:20 UTCJul 9, 22:20 UTC1h 0m
2026-07-09 EPI684 - Jul 9, 19:00 UTCJul 9, 20:10 UTC1h 10m
2026-07-09 EPI684 - Jul 9, 15:40 UTCJul 9, 16:20 UTC40m
2026-07-09 EPI684 - Jul 9, 13:30 UTCJul 9, 14:25 UTC55m
2026-07-09 EPI684 - Jul 9, 11:10 UTCJul 9, 12:20 UTC1h 10m
2026-07-08 EPI684 - Jul 8, 21:00 UTCJul 8, 22:05 UTC1h 5m
2026-07-08 EPI684 - Jul 8, 17:50 UTCJul 8, 18:55 UTC1h 5m
2026-07-08 EPI684 - Jul 8, 14:20 UTCJul 8, 15:20 UTC1h 0m
2026-07-07 EPI684 - Jul 7, 20:05 UTCJul 7, 20:40 UTC35m
2026-07-07 EPI684 - Jul 7, 15:10 UTCJul 7, 15:50 UTC40m
2026-07-07 EPI684 - Jul 7, 12:45 UTCJul 7, 13:20 UTC35m
2026-07-06 EPI684 - Jul 6, 17:05 UTCJul 6, 18:00 UTC55m
2026-07-06 EPI684 - Jul 6, 15:10 UTCJul 6, 15:50 UTC40m
2026-07-06 EPI684 - Jul 6, 11:55 UTCJul 6, 12:40 UTC45m
2026-07-05 EPI684 - Jul 5, 14:55 UTCJul 5, 15:35 UTC40m
2026-07-05 EPI684 - Jul 5, 13:00 UTCJul 5, 13:45 UTC45m
2026-07-05 EPI684 - Jul 5, 10:40 UTCJul 5, 12:10 UTC1h 30m
2026-07-04 EPI684 - Jul 4, 18:45 UTCJul 4, 19:15 UTC30m
2026-07-04 EPI684 - Jul 4, 17:05 UTCJul 4, 17:40 UTC35m
2026-07-04 EPI684 - Jul 4, 14:50 UTCJul 4, 15:25 UTC35m
2026-07-04 EPI684 - Jul 4, 13:05 UTCJul 4, 13:50 UTC45m

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 N417EP page for operator, model, and routing details .

Mode-S A4EE93 frequently asked

What is Mode-S code A4EE93?
A4EE93 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N417EP.
Where is Mode-S A4EE93 registered?
Mode-S code A4EE93 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 A4EE93 broadcasting right now?
Yes. Mode-S A4EE93 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4EE93, octal 51167223, decimal 10,808,979.
What flights does A4EE93 operate?
Mode-S A4EE93 has broadcast 1 distinct callsign, including EPI684.