Apparatus

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sensors Mode-S transponder

A807A1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N61615 · CESSNA 172 Skyhawk · operated by HIGH FLIGHT ACADEMY LLC

Hex
A807A1
Octal
52003641
Decimal
11,012,001
Country
US
Tail
N61615
Type
C172
No current signal · last broadcast 8h ago
Flights observed
386
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A807A1.

Country allocation

The ICAO 24-bit address A807A1 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
N61615 - 386 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N61615 - Jul 14, 02:50 UTCJul 14, 03:20 UTC30m
2026-07-14 N61615 - Jul 14, 01:20 UTCJul 14, 02:10 UTC50m
2026-07-13 N61615 BTP → BTP Jul 13, 23:35 UTCJul 14, 00:15 UTC40m
2026-07-13 N61615 BTP → BTP Jul 13, 22:05 UTCJul 13, 22:55 UTC50m
2026-07-13 N61615 BTP → BTP Jul 13, 21:05 UTCJul 13, 21:15 UTC10m
2026-07-13 N61615 BTP → BTP Jul 13, 20:30 UTCJul 13, 21:00 UTC30m
2026-07-13 N61615 BTP → BTP Jul 13, 17:30 UTCJul 13, 18:25 UTC55m
2026-07-13 N61615 BTP → BTP Jul 13, 16:00 UTCJul 13, 16:50 UTC50m
2026-07-13 N61615 BTP → BTP Jul 13, 14:35 UTCJul 13, 14:40 UTC5m
2026-07-13 N61615 BTP → BTP Jul 13, 12:55 UTCJul 13, 13:35 UTC40m
2026-07-12 N61615 BTP → BTP Jul 12, 13:10 UTCJul 12, 15:10 UTC2h 0m
2026-07-11 N61615 BTP → BTP Jul 11, 20:25 UTCJul 11, 22:25 UTC2h 0m
2026-07-11 N61615 BTP → BTP Jul 11, 17:30 UTCJul 11, 18:30 UTC1h 0m
2026-07-10 N61615 BTP → BTP Jul 10, 15:55 UTCJul 10, 16:45 UTC50m
2026-07-10 N61615 BTP → BTP Jul 10, 13:00 UTCJul 10, 13:45 UTC45m
2026-07-09 N61615 BTP → BTP Jul 9, 18:55 UTCJul 9, 19:55 UTC1h 0m
2026-07-09 N61615 BTP → BTP Jul 9, 17:35 UTCJul 9, 17:55 UTC20m
2026-07-09 N61615 BTP → BTP Jul 9, 15:55 UTCJul 9, 16:40 UTC45m
2026-07-09 N61615 BTP → BTP Jul 9, 14:55 UTCJul 9, 15:20 UTC25m
2026-07-09 N61615 BTP → BTP Jul 9, 14:25 UTCJul 9, 14:50 UTC25m
2026-07-09 N61615 BTP → BTP Jul 9, 12:55 UTCJul 9, 13:40 UTC45m
2026-07-09 N61615 BTP → BTP Jul 9, 01:45 UTCJul 9, 03:00 UTC1h 15m
2026-07-08 N61615 BTP → BTP Jul 8, 23:25 UTCJul 9, 00:00 UTC35m
2026-07-08 N61615 BTP → BTP Jul 8, 21:55 UTCJul 8, 22:30 UTC35m
2026-07-08 N61615 BTP → BTP Jul 8, 20:25 UTCJul 8, 21:45 UTC1h 20m
2026-07-08 N61615 BTP → BTP Jul 8, 19:10 UTCJul 8, 19:50 UTC40m
2026-07-08 N61615 - Jul 8, 02:25 UTCJul 8, 02:35 UTC10m
2026-07-08 N61615 BTP → BTP Jul 8, 02:05 UTCJul 8, 02:20 UTC15m
2026-07-07 N61615 BTP → BTP Jul 7, 23:30 UTCJul 8, 00:30 UTC1h 0m
2026-07-07 N61615 - Jul 7, 20:35 UTCJul 7, 21:20 UTC45m
2026-07-07 N61615 BTP → BTP Jul 7, 19:05 UTCJul 7, 19:50 UTC45m
2026-07-06 N61615 - Jul 6, 19:05 UTCJul 6, 19:55 UTC50m
2026-07-06 N61615 BTP → BTP Jul 6, 17:35 UTCJul 6, 18:25 UTC50m
2026-07-05 N61615 - Jul 5, 15:50 UTCJul 5, 17:55 UTC2h 5m
2026-07-05 N61615 BTP → BTP Jul 5, 14:35 UTCJul 5, 14:40 UTC5m
2026-07-04 N61615 BTP → BTP Jul 4, 15:50 UTCJul 4, 16:45 UTC55m
2026-07-04 N61615 - Jul 4, 13:25 UTCJul 4, 14:55 UTC1h 30m
2026-07-03 N61615 BTP → BTP Jul 3, 22:10 UTCJul 3, 23:10 UTC1h 0m
2026-07-03 N61615 - Jul 3, 18:55 UTCJul 3, 19:55 UTC1h 0m
2026-07-03 N61615 BTP → BTP Jul 3, 17:35 UTCJul 3, 18:25 UTC50m
2026-07-03 N61615 - Jul 3, 16:00 UTCJul 3, 16:50 UTC50m
2026-07-03 N61615 - Jul 3, 14:55 UTCJul 3, 15:25 UTC30m
2026-07-03 N61615 - Jul 3, 13:10 UTCJul 3, 13:30 UTC20m
2026-07-02 N61615 - Jul 2, 23:20 UTCJul 3, 00:40 UTC1h 20m
2026-07-02 N61615 BTP → BTP Jul 2, 18:50 UTCJul 2, 19:45 UTC55m
2026-07-02 N61615 BTP → BTP Jul 2, 17:30 UTCJul 2, 18:10 UTC40m
2026-07-02 N61615 BTP → BTP Jul 2, 15:50 UTCJul 2, 16:35 UTC45m
2026-07-02 N61615 BTP → BTP Jul 2, 14:40 UTCJul 2, 15:20 UTC40m
2026-07-02 N61615 BTP → BTP Jul 2, 13:05 UTCJul 2, 13:50 UTC45m
2026-07-02 N61615 - Jul 2, 02:45 UTCJul 2, 03:45 UTC1h 0m

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 N61615 page for operator, model, and routing details .

Mode-S A807A1 frequently asked

What is Mode-S code A807A1?
A807A1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N61615.
Where is Mode-S A807A1 registered?
Mode-S code A807A1 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 A807A1 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A807A1, octal 52003641, decimal 11,012,001.
What flights does A807A1 operate?
Mode-S A807A1 has broadcast 1 distinct callsign, including N61615.