Apparatus

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sensors Mode-S transponder

A7A0FF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5909E · CESSNA 172 Skyhawk · operated by OWENS FLIGHT TRAINING LLC

Hex
A7A0FF
Octal
51720377
Decimal
10,985,727
Country
US
Tail
N5909E
Type
C172
No current signal · last broadcast 21d ago
Flights observed
70
Distinct callsigns
1
Country
US
Last broadcast
21d ago

Last known position

Most recent position reported by Mode-S A7A0FF.

Country allocation

The ICAO 24-bit address A7A0FF 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
N5909E - 70 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N5909E - Jul 25, 17:15 UTCJul 25, 17:25 UTC10m
2026-07-24 N5909E - Jul 24, 20:45 UTCJul 24, 21:50 UTC1h 5m
2026-07-22 N5909E - Jul 22, 14:45 UTCJul 22, 15:55 UTC1h 10m
2026-07-21 N5909E - Jul 21, 14:10 UTCJul 21, 14:25 UTC15m
2026-07-20 N5909E - Jul 20, 19:35 UTCJul 20, 19:50 UTC15m
2026-07-20 N5909E - Jul 20, 16:00 UTCJul 20, 16:10 UTC10m
2026-07-20 N5909E LFT → OPL Jul 20, 13:45 UTCJul 20, 14:30 UTC45m
2026-07-18 N5909E - Jul 18, 21:20 UTCJul 18, 21:40 UTC20m
2026-07-18 N5909E - Jul 18, 17:35 UTCJul 18, 18:40 UTC1h 5m
2026-07-17 N5909E - Jul 17, 21:00 UTCJul 17, 21:30 UTC30m
2026-07-17 N5909E - Jul 17, 19:09 UTCJul 17, 19:35 UTC25m
2026-07-17 N5909E - Jul 17, 15:55 UTCJul 17, 16:40 UTC45m
2026-07-17 N5909E - Jul 17, 13:40 UTCJul 17, 14:20 UTC40m
2026-07-16 N5909E - Jul 16, 21:00 UTCJul 16, 21:10 UTC10m
2026-07-16 N5909E LFT → LFT Jul 16, 17:54 UTCJul 16, 18:29 UTC35m
2026-07-16 N5909E LFT → LFT Jul 16, 15:49 UTCJul 16, 16:30 UTC40m
2026-07-15 N5909E - Jul 15, 19:15 UTCJul 15, 19:40 UTC25m
2026-07-11 N5909E - Jul 11, 15:50 UTCJul 11, 16:45 UTC55m
2026-07-11 N5909E - Jul 11, 13:50 UTCJul 11, 14:50 UTC1h 0m
2026-07-10 N5909E - Jul 10, 16:05 UTCJul 10, 16:40 UTC35m
2026-07-10 N5909E - Jul 10, 12:30 UTCJul 10, 14:05 UTC1h 35m
2026-07-09 N5909E - Jul 9, 21:10 UTCJul 9, 21:20 UTC10m
2026-07-09 N5909E - Jul 9, 18:25 UTCJul 9, 18:40 UTC15m
2026-07-09 N5909E - Jul 9, 12:35 UTCJul 9, 14:15 UTC1h 40m
2026-07-08 N5909E - Jul 8, 13:30 UTCJul 8, 13:40 UTC10m
2026-07-07 N5909E - Jul 7, 13:45 UTCJul 7, 13:55 UTC10m
2026-07-07 N5909E - Jul 7, 12:55 UTCJul 7, 13:10 UTC15m
2026-07-06 N5909E - Jul 6, 13:35 UTCJul 6, 13:45 UTC10m
2026-07-03 N5909E - Jul 3, 19:45 UTCJul 3, 20:05 UTC20m
2026-07-03 N5909E - Jul 3, 16:25 UTCJul 3, 16:35 UTC10m
2026-07-03 N5909E - Jul 3, 13:50 UTCJul 3, 14:15 UTC25m
2026-06-30 N5909E - Jun 30, 20:15 UTCJun 30, 20:30 UTC15m
2026-06-29 N5909E - Jun 29, 20:49 UTCJun 29, 21:44 UTC55m
2026-06-29 N5909E - Jun 29, 17:30 UTCJun 29, 18:10 UTC40m
2026-06-27 N5909E - Jun 27, 17:44 UTCJun 27, 18:20 UTC35m
2026-06-26 N5909E - Jun 26, 21:55 UTCJun 26, 22:55 UTC1h 0m
2026-06-26 N5909E LFT → LFT Jun 26, 20:00 UTCJun 26, 20:40 UTC40m
2026-06-26 N5909E - Jun 26, 15:34 UTCJun 26, 16:30 UTC55m
2026-06-25 N5909E - Jun 25, 13:35 UTCJun 25, 14:39 UTC1h 5m
2026-06-24 N5909E - Jun 24, 23:04 UTCJun 24, 23:45 UTC40m
2026-06-23 N5909E - Jun 23, 21:34 UTCJun 23, 22:05 UTC30m
2026-06-23 N5909E - Jun 23, 15:50 UTCJun 23, 16:24 UTC35m
2026-06-22 N5909E - Jun 22, 20:39 UTCJun 22, 21:45 UTC1h 5m
2026-06-20 N5909E - Jun 20, 15:34 UTCJun 20, 16:34 UTC1h 0m
2026-06-19 N5909E - Jun 19, 21:30 UTCJun 19, 21:39 UTC10m
2026-06-19 N5909E LFT → LFT Jun 19, 18:54 UTCJun 19, 19:04 UTC10m
2026-06-19 N5909E - Jun 19, 17:44 UTCJun 19, 17:59 UTC15m
2026-06-19 N5909E - Jun 19, 15:39 UTCJun 19, 16:39 UTC1h 0m
2026-06-17 N5909E LFT → LFT Jun 17, 22:40 UTCJun 17, 22:55 UTC15m
2026-06-11 N5909E - Jun 11, 20:55 UTCJun 11, 21:25 UTC30m

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 N5909E page for operator, model, and routing details .

Mode-S A7A0FF frequently asked

What is Mode-S code A7A0FF?
A7A0FF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5909E.
Where is Mode-S A7A0FF registered?
Mode-S code A7A0FF 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 A7A0FF broadcasting right now?
No active broadcast right now. Last signal was 21d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7A0FF, octal 51720377, decimal 10,985,727.
What flights does A7A0FF operate?
Mode-S A7A0FF has broadcast 1 distinct callsign, including N5909E.