Apparatus

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sensors Mode-S transponder

A3F6FE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3547H · CESSNA 172 Skyhawk · operated by CALI AIR LLC

Hex
A3F6FE
Octal
50773376
Decimal
10,745,598
Country
US
Tail
N3547H
Type
C172
No current signal · last broadcast 3d ago
Flights observed
203
Distinct callsigns
1
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A3F6FE.

Country allocation

The ICAO 24-bit address A3F6FE 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
N3547H - 203 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N3547H - Jul 14, 22:10 UTCJul 14, 23:10 UTC59m
2026-07-14 N3547H RHV → RHV Jul 14, 17:25 UTCJul 14, 18:35 UTC1h 10m
2026-07-14 N3547H RHV → RHV Jul 14, 01:40 UTCJul 14, 01:50 UTC10m
2026-07-13 N3547H RHV → RHV Jul 13, 21:25 UTCJul 13, 22:45 UTC1h 20m
2026-07-13 N3547H - Jul 13, 04:00 UTCJul 13, 06:40 UTC2h 40m
2026-07-12 N3547H RHV → SMO Jul 12, 23:55 UTCJul 13, 02:40 UTC2h 45m
2026-07-12 N3547H RHV → RHV Jul 12, 21:25 UTCJul 12, 22:35 UTC1h 10m
2026-07-12 N3547H RHV → RHV Jul 12, 19:35 UTCJul 12, 20:55 UTC1h 20m
2026-07-12 N3547H RHV → RHV Jul 12, 01:50 UTCJul 12, 03:30 UTC1h 40m
2026-07-11 N3547H RHV → RHV Jul 11, 20:10 UTCJul 11, 21:50 UTC1h 40m
2026-07-11 N3547H RHV → RHV Jul 11, 16:45 UTCJul 11, 18:15 UTC1h 30m
2026-07-11 N3547H RHV → RHV Jul 11, 01:05 UTCJul 11, 01:15 UTC10m
2026-07-11 N3547H RHV → RHV Jul 11, 00:25 UTCJul 11, 00:55 UTC30m
2026-07-10 N3547H RHV → RHV Jul 10, 21:40 UTCJul 10, 22:45 UTC1h 5m
2026-07-10 N3547H RHV → RHV Jul 10, 18:00 UTCJul 10, 19:00 UTC1h 0m
2026-07-09 N3547H RHV → RHV Jul 9, 23:30 UTCJul 10, 00:00 UTC30m
2026-07-09 N3547H RHV → RHV Jul 9, 20:50 UTCJul 9, 21:50 UTC1h 0m
2026-07-07 N3547H RHV → RHV Jul 7, 20:30 UTCJul 7, 20:45 UTC15m
2026-07-07 N3547H RHV → RHV Jul 7, 20:00 UTCJul 7, 20:25 UTC25m
2026-07-07 N3547H RHV → RHV Jul 7, 19:10 UTCJul 7, 19:45 UTC35m
2026-07-07 N3547H RHV → RHV Jul 7, 00:40 UTCJul 7, 02:10 UTC1h 30m
2026-07-06 N3547H RHV → RHV Jul 6, 21:00 UTCJul 6, 21:40 UTC40m
2026-07-06 N3547H RHV → RHV Jul 6, 16:50 UTCJul 6, 18:35 UTC1h 45m
2026-07-05 N3547H RHV → RHV Jul 5, 22:45 UTCJul 5, 23:40 UTC55m
2026-07-04 N3547H RHV → RHV Jul 4, 20:40 UTCJul 4, 21:30 UTC50m
2026-07-03 N3547H RHV → RHV Jul 3, 21:05 UTCJul 3, 22:35 UTC1h 30m
2026-06-26 N3547H - Jun 26, 03:10 UTCJun 26, 03:29 UTC20m
2026-06-26 N3547H - Jun 26, 02:09 UTCJun 26, 02:40 UTC30m
2026-06-25 N3547H RHV → RHV Jun 25, 00:29 UTCJun 25, 00:40 UTC10m
2026-06-25 N3547H - Jun 25, 00:14 UTCJun 25, 00:24 UTC10m
2026-06-24 N3547H - Jun 24, 23:59 UTCJun 25, 00:09 UTC10m
2026-06-24 N3547H RHV → RHV Jun 24, 18:39 UTCJun 24, 19:10 UTC30m
2026-06-24 N3547H RHV → RHV Jun 24, 00:20 UTCJun 24, 01:55 UTC1h 35m
2026-06-23 N3547H RHV → RHV Jun 23, 19:55 UTCJun 23, 20:59 UTC1h 5m
2026-06-23 N3547H RHV → RHV Jun 23, 17:34 UTCJun 23, 17:59 UTC25m
2026-06-23 N3547H RHV → RHV Jun 23, 16:54 UTCJun 23, 17:30 UTC35m
2026-06-23 N3547H - Jun 23, 01:50 UTCJun 23, 02:24 UTC35m
2026-06-23 N3547H - Jun 23, 00:35 UTCJun 23, 01:00 UTC25m
2026-06-22 N3547H RHV → RHV Jun 22, 22:44 UTCJun 22, 23:10 UTC25m
2026-06-22 N3547H RHV → RHV Jun 22, 22:24 UTCJun 22, 22:30 UTC5m
2026-06-22 N3547H RHV → RHV Jun 22, 20:00 UTCJun 22, 20:44 UTC45m
2026-06-22 N3547H RHV → RHV Jun 22, 17:55 UTCJun 22, 18:15 UTC20m
2026-06-22 N3547H RHV → RHV Jun 22, 17:15 UTCJun 22, 17:40 UTC25m
2026-06-22 N3547H RHV → RHV Jun 22, 02:25 UTCJun 22, 02:54 UTC30m
2026-06-21 N3547H - Jun 21, 21:05 UTCJun 21, 21:29 UTC25m
2026-06-21 N3547H - Jun 21, 20:05 UTCJun 21, 20:29 UTC25m
2026-06-21 N3547H - Jun 21, 00:19 UTCJun 21, 00:34 UTC15m
2026-06-20 N3547H - Jun 20, 22:59 UTCJun 20, 23:25 UTC25m
2026-06-20 N3547H RHV → RHV Jun 20, 20:05 UTCJun 20, 22:10 UTC2h 5m
2026-06-19 N3547H RHV → RHV Jun 19, 18:20 UTCJun 19, 18:30 UTC10m

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 N3547H page for operator, model, and routing details .

Mode-S A3F6FE frequently asked

What is Mode-S code A3F6FE?
A3F6FE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3547H.
Where is Mode-S A3F6FE registered?
Mode-S code A3F6FE 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 A3F6FE broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3F6FE, octal 50773376, decimal 10,745,598.
What flights does A3F6FE operate?
Mode-S A3F6FE has broadcast 1 distinct callsign, including N3547H.