Apparatus

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sensors Mode-S transponder

A7EF3C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N610FA · PIPER PA-28-140/150/160/180 · operated by STRATUS RR LLC

Hex
A7EF3C
Octal
51767474
Decimal
11,005,756
Country
US
Tail
N610FA
Type
P28A
No current signal · last broadcast Jul 26, 18:50 UTC
Flights observed
249
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 18:50 UTC

Last known position

Most recent position reported by Mode-S A7EF3C.

Country allocation

The ICAO 24-bit address A7EF3C 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
N610FA - 249 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N610FA - Jul 26, 17:45 UTCJul 26, 18:50 UTC1h 5m
2026-07-26 N610FA - Jul 26, 15:15 UTCJul 26, 16:35 UTC1h 20m
2026-07-25 N610FA - Jul 25, 17:35 UTCJul 25, 18:30 UTC55m
2026-07-25 N610FA - Jul 25, 15:30 UTCJul 25, 16:30 UTC1h 0m
2026-07-25 N610FA - Jul 25, 01:30 UTCJul 25, 02:15 UTC45m
2026-07-24 N610FA - Jul 24, 23:35 UTCJul 25, 00:20 UTC45m
2026-07-24 N610FA - Jul 24, 19:45 UTCJul 24, 20:55 UTC1h 10m
2026-07-24 N610FA - Jul 24, 17:25 UTCJul 24, 17:40 UTC15m
2026-07-24 N610FA - Jul 24, 16:35 UTCJul 24, 17:20 UTC45m
2026-07-24 N610FA - Jul 24, 15:50 UTCJul 24, 16:30 UTC40m
2026-07-24 N610FA - Jul 24, 13:25 UTCJul 24, 14:45 UTC1h 20m
2026-07-24 N610FA - Jul 24, 11:30 UTCJul 24, 12:35 UTC1h 5m
2026-07-24 N610FA - Jul 24, 03:05 UTCJul 24, 03:20 UTC15m
2026-07-24 N610FA RDG → RDG Jul 24, 02:35 UTCJul 24, 02:50 UTC15m
2026-07-24 N610FA RDG → RDG Jul 24, 02:10 UTCJul 24, 02:15 UTC5m
2026-07-24 N610FA - Jul 24, 01:55 UTCJul 24, 02:05 UTC10m
2026-07-24 N610FA - Jul 24, 01:35 UTCJul 24, 01:50 UTC15m
2026-07-23 N610FA - Jul 23, 22:25 UTCJul 23, 23:10 UTC45m
2026-07-23 N610FA - Jul 23, 21:40 UTCJul 23, 22:20 UTC40m
2026-07-23 N610FA - Jul 23, 19:35 UTCJul 23, 20:50 UTC1h 15m
2026-07-23 N610FA - Jul 23, 11:30 UTCJul 23, 12:40 UTC1h 10m
2026-07-22 N610FA - Jul 22, 23:25 UTCJul 22, 23:55 UTC30m
2026-07-22 N610FA - Jul 22, 22:45 UTCJul 22, 23:15 UTC30m
2026-07-22 N610FA - Jul 22, 21:50 UTCJul 22, 22:40 UTC50m
2026-07-22 N610FA - Jul 22, 13:30 UTCJul 22, 14:35 UTC1h 5m
2026-07-22 N610FA - Jul 22, 11:40 UTCJul 22, 12:50 UTC1h 10m
2026-07-21 N610FA - Jul 21, 02:05 UTCJul 21, 03:05 UTC1h 0m
2026-07-21 N610FA - Jul 21, 00:10 UTCJul 21, 00:50 UTC40m
2026-07-20 N610FA - Jul 20, 23:15 UTCJul 21, 00:00 UTC44m
2026-07-20 N610FA - Jul 20, 19:30 UTCJul 20, 20:20 UTC50m
2026-07-20 N610FA - Jul 20, 17:30 UTCJul 20, 18:30 UTC1h 0m
2026-07-19 N610FA - Jul 19, 13:20 UTCJul 19, 14:35 UTC1h 15m
2026-07-15 N610FA - Jul 15, 15:35 UTCJul 15, 16:40 UTC1h 5m
2026-07-15 N610FA - Jul 15, 13:40 UTCJul 15, 14:50 UTC1h 10m
2026-07-14 N610FA - Jul 14, 21:45 UTCJul 15, 00:20 UTC2h 34m
2026-07-14 N610FA - Jul 14, 19:20 UTCJul 14, 20:15 UTC55m
2026-07-14 N610FA - Jul 14, 17:25 UTCJul 14, 18:30 UTC1h 5m
2026-07-14 N610FA - Jul 14, 15:35 UTCJul 14, 16:40 UTC1h 5m
2026-07-14 N610FA - Jul 14, 13:25 UTCJul 14, 14:40 UTC1h 15m
2026-07-13 N610FA - Jul 13, 23:25 UTCJul 14, 00:55 UTC1h 30m
2026-07-13 N610FA - Jul 13, 22:20 UTCJul 13, 22:40 UTC20m
2026-07-13 N610FA RDG → RDG Jul 13, 21:55 UTCJul 13, 22:15 UTC20m
2026-07-13 N610FA - Jul 13, 21:30 UTCJul 13, 21:50 UTC20m
2026-07-13 N610FA - Jul 13, 21:05 UTCJul 13, 21:25 UTC20m
2026-07-13 N610FA - Jul 13, 19:40 UTCJul 13, 20:35 UTC55m
2026-07-13 N610FA - Jul 13, 17:35 UTCJul 13, 18:45 UTC1h 10m
2026-07-13 N610FA - Jul 13, 15:40 UTCJul 13, 16:40 UTC1h 0m
2026-07-11 N610FA - Jul 11, 13:25 UTCJul 11, 14:45 UTC1h 20m
2026-07-10 N610FA - Jul 10, 15:25 UTCJul 10, 16:55 UTC1h 30m
2026-07-10 N610FA - Jul 10, 13:30 UTCJul 10, 14:20 UTC50m

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 N610FA page for operator, model, and routing details .

Mode-S A7EF3C frequently asked

What is Mode-S code A7EF3C?
A7EF3C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N610FA.
Where is Mode-S A7EF3C registered?
Mode-S code A7EF3C 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 A7EF3C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7EF3C, octal 51767474, decimal 11,005,756.
What flights does A7EF3C operate?
Mode-S A7EF3C has broadcast 1 distinct callsign, including N610FA.