Apparatus

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sensors Mode-S transponder

A28EF3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N264MG · PIPER PA-28-140/150/160/180 · operated by GEORGIA AVIATION AUTHORITY

Hex
A28EF3
Octal
50507363
Decimal
10,653,427
Country
US
Tail
N264MG
Type
P28A
Broadcasting now · callsign NIT264 · 2,800 ft
Flights observed
10
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Current position

A28EF3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A28EF3 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
NIT264 - 10 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 NIT264 - Apr 13, 22:30 UTCApr 13, 23:15 UTC45m
2026-04-13 NIT264 - Apr 13, 20:15 UTCApr 13, 21:10 UTC55m
2026-04-13 NIT264 - Apr 13, 18:10 UTCApr 13, 19:35 UTC1h 25m
2026-04-13 NIT264 - Apr 13, 16:15 UTCApr 13, 17:20 UTC1h 5m
2026-04-13 NIT264 - Apr 13, 13:40 UTCApr 13, 14:35 UTC55m
2026-04-13 NIT264 - Apr 13, 12:20 UTCApr 13, 12:45 UTC25m
2026-04-13 NIT264 - Apr 13, 11:55 UTCApr 13, 12:45 UTC50m
2026-04-13 NIT264 - Apr 13, 11:35 UTCApr 13, 12:15 UTC40m
2026-04-13 NIT264 - Apr 13, 00:30 UTCApr 13, 01:25 UTC55m
2026-04-12 NIT264 - Apr 12, 17:25 UTCApr 12, 18:20 UTC55m

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 N264MG page for operator, model, and routing details .

Mode-S A28EF3 frequently asked

What is Mode-S code A28EF3?
A28EF3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N264MG.
Where is Mode-S A28EF3 registered?
Mode-S code A28EF3 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 A28EF3 broadcasting right now?
Yes. Mode-S A28EF3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A28EF3, octal 50507363, decimal 10,653,427.
What flights does A28EF3 operate?
Mode-S A28EF3 has broadcast 1 distinct callsign, including NIT264.