Apparatus

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sensors Mode-S transponder

AA1F5E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N751SP · CESSNA 172 Skyhawk · operated by HAGELE AVIATION LLC

Hex
AA1F5E
Octal
52417536
Decimal
11,149,150
Country
US
Tail
N751SP
Type
C172
No current signal · last broadcast 15h ago
Flights observed
142
Distinct callsigns
1
Country
US
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S AA1F5E.

Country allocation

The ICAO 24-bit address AA1F5E 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
N751SP - 142 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N751SP - Jul 13, 23:25 UTCJul 13, 23:55 UTC30m
2026-07-13 N751SP - Jul 13, 21:35 UTCJul 13, 22:15 UTC40m
2026-07-13 N751SP HIO → HIO Jul 13, 19:30 UTCJul 13, 19:40 UTC10m
2026-07-13 N751SP HIO → HIO Jul 13, 18:50 UTCJul 13, 19:25 UTC35m
2026-07-13 N751SP - Jul 13, 16:05 UTCJul 13, 17:05 UTC1h 0m
2026-07-12 N751SP - Jul 12, 22:50 UTCJul 13, 01:15 UTC2h 25m
2026-07-11 N751SP - Jul 11, 23:15 UTCJul 11, 23:45 UTC30m
2026-07-11 N751SP HIO → HIO Jul 11, 21:30 UTCJul 11, 22:20 UTC50m
2026-07-11 N751SP - Jul 11, 15:20 UTCJul 11, 16:25 UTC1h 5m
2026-07-10 N751SP - Jul 10, 22:40 UTCJul 10, 23:20 UTC40m
2026-07-10 N751SP - Jul 10, 19:05 UTCJul 10, 20:20 UTC1h 15m
2026-07-10 N751SP - Jul 10, 04:40 UTCJul 10, 06:45 UTC2h 5m
2026-07-08 N751SP - Jul 8, 20:25 UTCJul 8, 21:55 UTC1h 30m
2026-07-08 N751SP - Jul 8, 17:05 UTCJul 8, 17:45 UTC40m
2026-07-03 N751SP - Jul 3, 17:00 UTCJul 3, 18:05 UTC1h 5m
2026-07-02 N751SP - Jul 2, 23:40 UTCJul 3, 00:35 UTC55m
2026-07-02 N751SP HIO → HIO Jul 2, 16:50 UTCJul 2, 18:10 UTC1h 20m
2026-07-01 N751SP - Jul 1, 20:25 UTCJul 1, 22:15 UTC1h 50m
2026-07-01 N751SP - Jul 1, 00:25 UTCJul 1, 02:20 UTC1h 55m
2026-06-30 N751SP - Jun 30, 19:00 UTCJun 30, 19:40 UTC40m
2026-06-30 N751SP - Jun 30, 16:40 UTCJun 30, 17:50 UTC1h 10m
2026-06-28 N751SP - Jun 28, 20:54 UTCJun 28, 21:59 UTC1h 5m
2026-06-28 N751SP - Jun 28, 17:34 UTCJun 28, 18:34 UTC1h 0m
2026-06-28 N751SP - Jun 28, 15:24 UTCJun 28, 16:49 UTC1h 25m
2026-06-27 N751SP HIO → HIO Jun 27, 16:59 UTCJun 27, 17:25 UTC25m
2026-06-27 N751SP - Jun 27, 00:34 UTCJun 27, 01:24 UTC50m
2026-06-25 N751SP - Jun 25, 20:30 UTCJun 25, 21:25 UTC55m
2026-06-25 N751SP - Jun 25, 18:34 UTCJun 25, 18:55 UTC20m
2026-06-24 N751SP - Jun 24, 18:09 UTCJun 24, 19:34 UTC1h 25m
2026-06-24 N751SP - Jun 24, 16:34 UTCJun 24, 17:05 UTC30m
2026-06-23 N751SP HIO → HIO Jun 23, 21:10 UTCJun 23, 22:29 UTC1h 20m
2026-06-22 N751SP - Jun 22, 20:44 UTCJun 22, 22:10 UTC1h 25m
2026-06-22 N751SP HIO → HIO Jun 22, 18:30 UTCJun 22, 18:49 UTC20m
2026-06-22 N751SP HIO → HIO Jun 22, 17:34 UTCJun 22, 18:24 UTC50m
2026-06-22 N751SP - Jun 22, 00:20 UTCJun 22, 01:10 UTC50m
2026-06-21 N751SP - Jun 21, 20:24 UTCJun 21, 21:49 UTC1h 25m
2026-06-21 N751SP - Jun 21, 15:25 UTCJun 21, 15:44 UTC20m
2026-06-20 N751SP - Jun 20, 22:20 UTCJun 21, 00:04 UTC1h 45m
2026-06-20 N751SP HIO → CVO Jun 20, 21:00 UTCJun 20, 21:40 UTC40m
2026-06-19 N751SP - Jun 19, 22:49 UTCJun 19, 23:29 UTC40m
2026-06-19 N751SP - Jun 19, 21:04 UTCJun 19, 21:24 UTC20m
2026-06-19 N751SP - Jun 19, 18:44 UTCJun 19, 19:04 UTC20m
2026-06-18 N751SP - Jun 18, 19:45 UTCJun 18, 20:35 UTC50m
2026-06-18 N751SP - Jun 18, 18:20 UTCJun 18, 19:05 UTC45m
2026-06-17 N751SP - Jun 17, 04:40 UTCJun 17, 05:05 UTC25m
2026-06-15 N751SP - Jun 15, 20:20 UTCJun 15, 21:45 UTC1h 25m
2026-06-15 N751SP HIO → HIO Jun 15, 18:20 UTCJun 15, 18:50 UTC30m
2026-06-14 N751SP HIO → HIO Jun 14, 16:20 UTCJun 14, 16:45 UTC25m
2026-06-14 N751SP - Jun 14, 05:35 UTCJun 14, 08:00 UTC2h 25m
2026-06-14 N751SP - Jun 14, 05:15 UTCJun 14, 05:30 UTC15m

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 N751SP page for operator, model, and routing details .

Mode-S AA1F5E frequently asked

What is Mode-S code AA1F5E?
AA1F5E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N751SP.
Where is Mode-S AA1F5E registered?
Mode-S code AA1F5E 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 AA1F5E broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA1F5E, octal 52417536, decimal 11,149,150.
What flights does AA1F5E operate?
Mode-S AA1F5E has broadcast 1 distinct callsign, including N751SP.