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 10h ago
Flights observed
210
Distinct callsigns
1
Country
US
Last broadcast
10h ago

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 - 210 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-09 N610FA - Jul 9, 23:05 UTCJul 9, 23:25 UTC20m
2026-07-09 N610FA - Jul 9, 22:35 UTCJul 9, 22:50 UTC15m
2026-07-09 N610FA - Jul 9, 17:55 UTCJul 9, 18:50 UTC55m
2026-07-08 N610FA - Jul 8, 23:15 UTCJul 9, 00:25 UTC1h 10m
2026-07-08 N610FA - Jul 8, 20:15 UTCJul 8, 22:15 UTC2h 0m
2026-07-02 N610FA - Jul 2, 23:00 UTCJul 3, 00:40 UTC1h 40m
2026-07-02 N610FA - Jul 2, 12:15 UTCJul 2, 12:30 UTC15m
2026-07-02 N610FA ABE → ABE Jul 2, 12:00 UTCJul 2, 12:10 UTC10m
2026-07-02 N610FA - Jul 2, 11:35 UTCJul 2, 11:45 UTC10m
2026-07-01 N610FA - Jul 1, 01:45 UTCJul 1, 02:25 UTC40m
2026-06-30 N610FA - Jun 30, 17:45 UTCJun 30, 18:45 UTC1h 0m
2026-06-30 N610FA - Jun 30, 13:30 UTCJun 30, 14:40 UTC1h 10m
2026-06-30 N610FA - Jun 30, 11:25 UTCJun 30, 12:15 UTC50m
2026-06-29 N610FA - Jun 29, 23:44 UTCJun 30, 00:35 UTC50m
2026-06-29 N610FA - Jun 29, 20:00 UTCJun 29, 20:44 UTC45m
2026-06-29 N610FA - Jun 29, 17:34 UTCJun 29, 18:39 UTC1h 5m
2026-06-29 N610FA - Jun 29, 15:34 UTCJun 29, 16:29 UTC55m
2026-06-29 N610FA - Jun 29, 13:24 UTCJun 29, 14:50 UTC1h 25m
2026-06-27 N610FA - Jun 27, 14:20 UTCJun 27, 14:45 UTC25m
2026-06-27 N610FA - Jun 27, 13:35 UTCJun 27, 14:14 UTC40m
2026-06-26 N610FA - Jun 26, 21:35 UTCJun 26, 22:14 UTC40m
2026-06-26 N610FA - Jun 26, 15:29 UTCJun 26, 16:35 UTC1h 5m
2026-06-25 N610FA - Jun 25, 22:54 UTCJun 25, 23:49 UTC55m
2026-06-25 N610FA - Jun 25, 21:05 UTCJun 25, 21:44 UTC40m
2026-06-25 N610FA - Jun 25, 19:29 UTCJun 25, 20:30 UTC1h 0m
2026-06-24 N610FA - Jun 24, 19:34 UTCJun 24, 20:40 UTC1h 5m
2026-06-24 N610FA - Jun 24, 17:29 UTCJun 24, 18:44 UTC1h 15m
2026-06-24 N610FA - Jun 24, 15:39 UTCJun 24, 16:40 UTC1h 0m
2026-06-24 N610FA - Jun 24, 13:24 UTCJun 24, 14:45 UTC1h 20m
2026-06-24 N610FA - Jun 24, 11:39 UTCJun 24, 12:44 UTC1h 5m
2026-06-22 N610FA - Jun 22, 15:35 UTCJun 22, 16:20 UTC45m
2026-06-22 N610FA - Jun 22, 13:25 UTCJun 22, 14:45 UTC1h 20m
2026-06-22 N610FA - Jun 22, 11:44 UTCJun 22, 12:44 UTC1h 0m
2026-06-20 N610FA - Jun 20, 15:29 UTCJun 20, 16:34 UTC1h 5m
2026-06-19 N610FA - Jun 19, 15:34 UTCJun 19, 16:44 UTC1h 10m
2026-06-19 N610FA - Jun 19, 13:54 UTCJun 19, 14:44 UTC50m
2026-06-15 N610FA - Jun 15, 17:30 UTCJun 15, 17:54 UTC25m
2026-06-15 N610FA BBX → BBX Jun 15, 11:19 UTCJun 15, 11:34 UTC15m
2026-06-14 N610FA - Jun 14, 15:30 UTCJun 14, 16:35 UTC1h 5m

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 10h ago.
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.