Apparatus

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sensors Mode-S transponder

A0B3F7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1440U · operated by PIPER AIRCRAFT INC

Hex
A0B3F7
Octal
50131767
Decimal
10,531,831
Country
US
Tail
N1440U
No current signal · last broadcast 1d ago
Flights observed
120
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A0B3F7.

Country allocation

The ICAO 24-bit address A0B3F7 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
OUA37 - 120 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 OUA37 - Jul 16, 21:10 UTCJul 16, 21:45 UTC35m
2026-07-16 OUA37 - Jul 16, 16:25 UTCJul 16, 18:00 UTC1h 35m
2026-07-16 OUA37 - Jul 16, 12:40 UTCJul 16, 15:30 UTC2h 50m
2026-07-15 OUA37 - Jul 15, 16:25 UTCJul 15, 17:00 UTC35m
2026-07-15 OUA37 OUN → OUN Jul 15, 13:30 UTCJul 15, 14:25 UTC55m
2026-07-14 OUA37 - Jul 14, 17:55 UTCJul 14, 18:45 UTC50m
2026-07-14 OUA37 - Jul 14, 02:50 UTCJul 14, 04:10 UTC1h 20m
2026-07-14 OUA37 - Jul 14, 00:10 UTCJul 14, 01:00 UTC50m
2026-07-13 OUA37 - Jul 13, 21:45 UTCJul 13, 22:25 UTC40m
2026-07-13 OUA37 - Jul 13, 14:40 UTCJul 13, 15:20 UTC40m
2026-07-13 OUA37 - Jul 13, 02:30 UTCJul 13, 03:20 UTC50m
2026-07-12 OUA37 - Jul 12, 23:10 UTCJul 13, 00:35 UTC1h 25m
2026-07-12 OUA37 - Jul 12, 19:15 UTCJul 12, 20:45 UTC1h 30m
2026-07-11 OUA37 - Jul 11, 18:20 UTCJul 11, 21:25 UTC3h 5m
2026-07-11 OUA37 - Jul 11, 15:25 UTCJul 11, 17:40 UTC2h 15m
2026-07-11 OUA37 - Jul 11, 13:40 UTCJul 11, 14:25 UTC45m
2026-07-10 OUA37 - Jul 10, 23:30 UTCJul 11, 00:15 UTC45m
2026-07-10 OUA37 - Jul 10, 18:10 UTCJul 10, 18:55 UTC45m
2026-07-06 OUA37 - Jul 6, 19:30 UTCJul 6, 20:05 UTC35m
2026-07-06 OUA37 - Jul 6, 17:50 UTCJul 6, 18:30 UTC40m
2026-07-06 OUA37 - Jul 6, 14:25 UTCJul 6, 15:15 UTC50m
2026-07-06 OUA37 - Jul 6, 11:50 UTCJul 6, 12:30 UTC40m
2026-07-05 OUA37 - Jul 5, 22:45 UTCJul 5, 23:35 UTC50m
2026-07-05 OUA37 - Jul 5, 12:45 UTCJul 5, 14:20 UTC1h 35m
2026-07-04 OUA37 - Jul 4, 02:55 UTCJul 4, 04:45 UTC1h 50m
2026-07-03 OUA37 - Jul 3, 23:30 UTCJul 4, 00:30 UTC1h 0m
2026-07-03 OUA37 - Jul 3, 21:35 UTCJul 3, 22:55 UTC1h 20m
2026-07-03 OUA37 - Jul 3, 19:15 UTCJul 3, 20:00 UTC45m
2026-07-03 OUA37 - Jul 3, 17:45 UTCJul 3, 18:45 UTC1h 0m
2026-07-03 OUA37 - Jul 3, 15:45 UTCJul 3, 16:25 UTC40m
2026-07-03 OUA37 - Jul 3, 13:20 UTCJul 3, 13:45 UTC25m
2026-07-03 OUA37 - Jul 3, 02:40 UTCJul 3, 03:25 UTC45m
2026-07-02 OUA37 - Jul 2, 19:50 UTCJul 2, 20:30 UTC40m
2026-07-02 OUA37 - Jul 2, 15:30 UTCJul 2, 17:50 UTC2h 20m
2026-07-02 OUA37 - Jul 2, 12:45 UTCJul 2, 14:35 UTC1h 50m
2026-07-02 OUA37 - Jul 2, 02:35 UTCJul 2, 03:10 UTC35m
2026-07-01 OUA37 - Jul 1, 23:15 UTCJul 2, 01:05 UTC1h 50m
2026-07-01 OUA37 - Jul 1, 20:30 UTCJul 1, 21:40 UTC1h 10m
2026-07-01 OUA37 - Jul 1, 19:20 UTCJul 1, 19:30 UTC10m
2026-07-01 OUA37 - Jul 1, 15:30 UTCJul 1, 16:55 UTC1h 25m
2026-07-01 OUA37 - Jul 1, 12:40 UTCJul 1, 13:30 UTC50m
2026-06-30 OUA37 - Jun 30, 23:40 UTCJun 30, 23:50 UTC10m
2026-06-30 OUA37 - Jun 30, 22:30 UTCJun 30, 23:10 UTC40m
2026-06-30 OUA37 - Jun 30, 21:25 UTCJun 30, 21:40 UTC15m
2026-06-30 OUA37 - Jun 30, 20:30 UTCJun 30, 20:40 UTC10m
2026-06-30 OUA37 - Jun 30, 17:50 UTCJun 30, 19:35 UTC1h 45m
2026-06-30 OUA37 - Jun 30, 16:00 UTCJun 30, 16:50 UTC50m
2026-06-30 OUA37 - Jun 30, 13:55 UTCJun 30, 14:40 UTC45m
2026-06-28 OUA37 - Jun 28, 00:55 UTCJun 28, 02:34 UTC1h 40m
2026-06-27 OUA37 - Jun 27, 20:19 UTCJun 27, 23:04 UTC2h 45m

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 N1440U page for operator, model, and routing details .

Mode-S A0B3F7 frequently asked

What is Mode-S code A0B3F7?
A0B3F7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1440U.
Where is Mode-S A0B3F7 registered?
Mode-S code A0B3F7 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 A0B3F7 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B3F7, octal 50131767, decimal 10,531,831.
What flights does A0B3F7 operate?
Mode-S A0B3F7 has broadcast 1 distinct callsign, including OUA37.