Apparatus

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sensors Mode-S transponder

A5E6AA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N48EF · CESSNA 172 Skyhawk · operated by VISTA AIR INC

Hex
A5E6AA
Octal
51363252
Decimal
10,872,490
Country
US
Tail
N48EF
Type
C172
No current signal · last broadcast 14h ago
Flights observed
126
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S A5E6AA.

Country allocation

The ICAO 24-bit address A5E6AA 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
N48EF - 126 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 N48EF - May 29, 22:05 UTCMay 29, 22:25 UTC20m
2026-05-29 N48EF WHP → WHP May 29, 21:25 UTCMay 29, 21:50 UTC25m
2026-05-29 N48EF - May 29, 21:10 UTCMay 29, 21:20 UTC10m
2026-05-29 N48EF WHP → WHP May 29, 20:45 UTCMay 29, 20:55 UTC10m
2026-05-26 N48EF - May 26, 23:19 UTCMay 26, 23:29 UTC10m
2026-05-26 N48EF WHP → WHP May 26, 22:44 UTCMay 26, 22:54 UTC10m
2026-05-26 N48EF - May 26, 22:29 UTCMay 26, 22:39 UTC10m
2026-05-26 N48EF - May 26, 01:55 UTCMay 26, 02:29 UTC35m
2026-05-25 N48EF - May 25, 22:55 UTCMay 26, 00:09 UTC1h 15m
2026-05-25 N48EF - May 25, 19:59 UTCMay 25, 20:45 UTC45m
2026-05-25 N48EF - May 25, 18:55 UTCMay 25, 19:10 UTC15m
2026-05-25 N48EF - May 25, 15:35 UTCMay 25, 17:30 UTC1h 55m
2026-05-25 N48EF - May 25, 01:55 UTCMay 25, 02:15 UTC20m
2026-05-24 N48EF - May 24, 23:00 UTCMay 24, 23:15 UTC15m
2026-05-24 N48EF - May 24, 20:15 UTCMay 24, 21:30 UTC1h 15m
2026-05-23 N48EF WHP → WHP May 23, 21:30 UTCMay 23, 21:45 UTC15m
2026-05-23 N48EF - May 23, 21:05 UTCMay 23, 21:25 UTC20m
2026-05-23 N48EF - May 23, 20:40 UTCMay 23, 20:50 UTC10m
2026-05-23 N48EF WHP → WHP May 23, 20:20 UTCMay 23, 20:25 UTC5m
2026-05-22 N48EF WHP → WHP May 22, 23:15 UTCMay 23, 00:15 UTC1h 0m
2026-05-22 N48EF WHP → WHP May 22, 18:20 UTCMay 22, 18:25 UTC5m
2026-05-21 N48EF WHP → WHP May 21, 17:05 UTCMay 21, 18:10 UTC1h 5m
2026-05-19 N48EF - May 19, 19:15 UTCMay 19, 20:50 UTC1h 35m
2026-05-19 N48EF - May 19, 16:25 UTCMay 19, 16:35 UTC10m
2026-05-19 N48EF WHP → WHP May 19, 16:00 UTCMay 19, 16:10 UTC10m
2026-05-19 N48EF WHP → WHP May 19, 15:35 UTCMay 19, 15:45 UTC10m
2026-05-16 N48EF WHP → WHP May 16, 22:45 UTCMay 17, 01:00 UTC2h 15m
2026-05-16 N48EF - May 16, 19:05 UTCMay 16, 19:15 UTC10m
2026-05-16 N48EF WHP → WHP May 16, 18:45 UTCMay 16, 18:50 UTC5m
2026-05-16 N48EF WHP → WHP May 16, 17:25 UTCMay 16, 17:35 UTC10m
2026-05-16 N48EF WHP → WHP May 16, 16:25 UTCMay 16, 16:31 UTC5m
2026-05-16 N48EF - May 16, 01:30 UTCMay 16, 01:50 UTC20m
2026-05-16 N48EF WHP → WHP May 16, 00:15 UTCMay 16, 00:25 UTC10m
2026-05-16 N48EF WHP → WHP May 16, 00:05 UTCMay 16, 00:10 UTC5m
2026-05-14 N48EF WHP → WHP May 14, 21:45 UTCMay 14, 22:15 UTC30m
2026-05-14 N48EF - May 14, 20:00 UTCMay 14, 20:35 UTC35m
2026-05-14 N48EF - May 14, 19:30 UTCMay 14, 19:35 UTC5m
2026-05-14 N48EF - May 14, 19:15 UTCMay 14, 19:25 UTC10m
2026-05-14 N48EF WHP → WHP May 14, 19:00 UTCMay 14, 19:10 UTC10m
2026-05-14 N48EF - May 14, 00:25 UTCMay 14, 00:40 UTC15m
2026-05-13 N48EF - May 13, 23:25 UTCMay 13, 23:40 UTC15m
2026-05-10 N48EF - May 10, 21:59 UTCMay 10, 23:00 UTC1h 0m
2026-05-10 N48EF WHP → WHP May 10, 19:35 UTCMay 10, 20:35 UTC1h 0m
2026-05-09 N48EF - May 9, 23:20 UTCMay 10, 00:24 UTC1h 5m
2026-05-09 N48EF - May 9, 21:25 UTCMay 9, 21:40 UTC15m
2026-05-09 N48EF - May 9, 19:55 UTCMay 9, 20:10 UTC15m
2026-05-09 N48EF - May 9, 17:45 UTCMay 9, 18:35 UTC50m
2026-05-09 N48EF - May 9, 00:35 UTCMay 9, 01:50 UTC1h 15m
2026-05-08 N48EF - May 8, 23:00 UTCMay 9, 00:05 UTC1h 5m
2026-05-08 N48EF - May 8, 21:00 UTCMay 8, 22:40 UTC1h 40m

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 N48EF page for operator, model, and routing details .

Mode-S A5E6AA frequently asked

What is Mode-S code A5E6AA?
A5E6AA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N48EF.
Where is Mode-S A5E6AA registered?
Mode-S code A5E6AA 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 A5E6AA broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5E6AA, octal 51363252, decimal 10,872,490.
What flights does A5E6AA operate?
Mode-S A5E6AA has broadcast 1 distinct callsign, including N48EF.