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sensors Mode-S transponder

A52FE1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N433SP · CESSNA 172 Skyhawk · operated by ASPIRE AVIATION LLC

Hex
A52FE1
Octal
51227741
Decimal
10,825,697
Country
US
Tail
N433SP
Type
C172
No current signal · last broadcast Jul 26, 19:40 UTC
Flights observed
168
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 19:40 UTC

Last known position

Most recent position reported by Mode-S A52FE1.

Country allocation

The ICAO 24-bit address A52FE1 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
N433SP - 168 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N433SP - Jul 26, 18:35 UTCJul 26, 19:40 UTC1h 5m
2026-07-26 N433SP - Jul 26, 15:15 UTCJul 26, 16:55 UTC1h 40m
2026-07-26 N433SP - Jul 26, 13:15 UTCJul 26, 14:00 UTC45m
2026-07-25 N433SP - Jul 25, 19:10 UTCJul 25, 20:25 UTC1h 15m
2026-07-25 N433SP - Jul 25, 17:35 UTCJul 25, 18:35 UTC1h 0m
2026-07-25 N433SP - Jul 25, 14:40 UTCJul 25, 15:05 UTC25m
2026-07-25 N433SP FRG → FRG Jul 25, 12:00 UTCJul 25, 13:20 UTC1h 20m
2026-07-25 N433SP - Jul 25, 00:55 UTCJul 25, 01:25 UTC30m
2026-07-24 N433SP - Jul 24, 23:15 UTCJul 24, 23:45 UTC30m
2026-07-24 N433SP FRG → FRG Jul 24, 13:00 UTCJul 24, 14:30 UTC1h 30m
2026-07-24 N433SP - Jul 24, 03:00 UTCJul 24, 04:10 UTC1h 10m
2026-07-24 N433SP - Jul 24, 00:50 UTCJul 24, 01:55 UTC1h 5m
2026-07-23 N433SP - Jul 23, 21:30 UTCJul 23, 22:00 UTC30m
2026-07-23 N433SP - Jul 23, 18:25 UTCJul 23, 18:50 UTC25m
2026-07-23 N433SP - Jul 23, 16:30 UTCJul 23, 17:00 UTC30m
2026-07-23 N433SP - Jul 23, 14:55 UTCJul 23, 15:40 UTC45m
2026-07-23 N433SP - Jul 23, 13:35 UTCJul 23, 14:00 UTC25m
2026-07-23 N433SP - Jul 23, 12:05 UTCJul 23, 12:50 UTC45m
2026-07-23 N433SP - Jul 23, 10:25 UTCJul 23, 11:30 UTC1h 5m
2026-07-23 N433SP - Jul 23, 05:55 UTCJul 23, 06:40 UTC45m
2026-07-22 N433SP - Jul 22, 23:30 UTCJul 23, 01:25 UTC1h 55m
2026-07-22 N433SP - Jul 22, 15:30 UTCJul 22, 15:40 UTC10m
2026-07-20 N433SP FRG → FRG Jul 20, 22:25 UTCJul 21, 00:20 UTC1h 55m
2026-07-20 N433SP - Jul 20, 21:20 UTCJul 20, 21:40 UTC20m
2026-07-20 N433SP - Jul 20, 19:50 UTCJul 20, 20:30 UTC40m
2026-07-20 N433SP - Jul 20, 16:50 UTCJul 20, 18:30 UTC1h 40m
2026-07-20 N433SP - Jul 20, 13:30 UTCJul 20, 15:10 UTC1h 40m
2026-07-19 N433SP - Jul 19, 21:50 UTCJul 19, 22:00 UTC10m
2026-07-19 N433SP - Jul 19, 21:00 UTCJul 19, 21:10 UTC10m
2026-07-19 N433SP - Jul 19, 19:25 UTCJul 19, 20:20 UTC55m
2026-07-19 N433SP - Jul 19, 18:05 UTCJul 19, 18:20 UTC15m
2026-07-19 N433SP - Jul 19, 17:00 UTCJul 19, 17:20 UTC20m
2026-07-18 N433SP FRG → FRG Jul 18, 01:50 UTCJul 18, 02:55 UTC1h 6m
2026-07-17 N433SP FRG → FRG Jul 17, 21:05 UTCJul 17, 22:10 UTC1h 5m
2026-07-17 N433SP - Jul 17, 19:35 UTCJul 17, 20:20 UTC45m
2026-07-17 N433SP FRG → FRG Jul 17, 16:40 UTCJul 17, 16:59 UTC20m
2026-07-17 N433SP FRG → FRG Jul 17, 14:55 UTCJul 17, 15:25 UTC30m
2026-07-17 N433SP - Jul 17, 13:10 UTCJul 17, 14:24 UTC1h 15m
2026-07-16 N433SP - Jul 16, 11:50 UTCJul 16, 13:40 UTC1h 50m
2026-07-15 N433SP - Jul 15, 16:15 UTCJul 15, 16:45 UTC30m
2026-07-15 N433SP - Jul 15, 13:00 UTCJul 15, 14:05 UTC1h 5m
2026-07-15 N433SP - Jul 15, 11:05 UTCJul 15, 11:50 UTC45m
2026-07-14 N433SP - Jul 14, 22:15 UTCJul 15, 00:10 UTC1h 54m
2026-07-14 N433SP - Jul 14, 11:55 UTCJul 14, 12:25 UTC30m
2026-07-13 N433SP - Jul 13, 23:45 UTCJul 14, 00:05 UTC20m
2026-07-13 N433SP - Jul 13, 22:40 UTCJul 13, 22:55 UTC15m
2026-07-13 N433SP - Jul 13, 21:25 UTCJul 13, 21:55 UTC30m
2026-07-13 N433SP - Jul 13, 19:15 UTCJul 13, 20:15 UTC1h 0m
2026-07-13 N433SP - Jul 13, 16:15 UTCJul 13, 17:40 UTC1h 25m
2026-07-13 N433SP - Jul 13, 15:10 UTCJul 13, 16:10 UTC1h 0m

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 N433SP page for operator, model, and routing details .

Mode-S A52FE1 frequently asked

What is Mode-S code A52FE1?
A52FE1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N433SP.
Where is Mode-S A52FE1 registered?
Mode-S code A52FE1 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 A52FE1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A52FE1, octal 51227741, decimal 10,825,697.
What flights does A52FE1 operate?
Mode-S A52FE1 has broadcast 1 distinct callsign, including N433SP.