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sensors Mode-S transponder

AA178F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7499C · CESSNA 172 Skyhawk · operated by HILLSBORO FLYING CLUB

Hex
AA178F
Octal
52413617
Decimal
11,147,151
Country
US
Tail
N7499C
Type
C172
No current signal · last broadcast 8h ago
Flights observed
145
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S AA178F.

Country allocation

The ICAO 24-bit address AA178F 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
N7499C - 145 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N7499C - Jul 25, 00:20 UTCJul 25, 01:20 UTC1h 0m
2026-07-24 N7499C - Jul 24, 21:55 UTCJul 24, 22:30 UTC35m
2026-07-24 N7499C - Jul 24, 20:30 UTCJul 24, 20:55 UTC25m
2026-07-22 N7499C - Jul 22, 14:20 UTCJul 22, 16:05 UTC1h 45m
2026-07-21 N7499C - Jul 21, 22:00 UTCJul 21, 23:05 UTC1h 5m
2026-07-19 N7499C HIO → HIO Jul 19, 16:20 UTCJul 19, 17:40 UTC1h 20m
2026-07-19 N7499C - Jul 19, 03:35 UTCJul 19, 04:00 UTC25m
2026-07-19 N7499C - Jul 19, 02:35 UTCJul 19, 03:05 UTC30m
2026-07-18 N7499C - Jul 18, 19:25 UTCJul 18, 20:05 UTC40m
2026-07-18 N7499C - Jul 18, 18:05 UTCJul 18, 18:30 UTC25m
2026-07-17 N7499C - Jul 17, 23:00 UTCJul 17, 23:45 UTC45m
2026-07-15 N7499C - Jul 15, 20:00 UTCJul 15, 21:15 UTC1h 15m
2026-07-15 N7499C - Jul 15, 14:00 UTCJul 15, 15:55 UTC1h 55m
2026-07-14 N7499C - Jul 14, 23:10 UTCJul 15, 00:10 UTC1h 0m
2026-07-13 N7499C - Jul 13, 21:55 UTCJul 13, 22:25 UTC30m
2026-07-13 N7499C - Jul 13, 20:25 UTCJul 13, 21:50 UTC1h 25m
2026-07-13 N7499C TIW → HIO Jul 13, 03:30 UTCJul 13, 04:40 UTC1h 10m
2026-07-13 N7499C - Jul 13, 00:50 UTCJul 13, 01:50 UTC1h 0m
2026-07-11 N7499C - Jul 11, 18:45 UTCJul 11, 19:20 UTC35m
2026-07-11 N7499C HIO → HIO Jul 11, 15:55 UTCJul 11, 16:55 UTC1h 0m
2026-07-10 N7499C - Jul 10, 22:25 UTCJul 10, 23:20 UTC55m
2026-07-09 N7499C HIO → HIO Jul 9, 23:30 UTCJul 10, 00:50 UTC1h 20m
2026-07-09 N7499C - Jul 9, 19:55 UTCJul 9, 21:00 UTC1h 5m
2026-07-09 N7499C - Jul 9, 17:10 UTCJul 9, 18:25 UTC1h 15m
2026-07-08 N7499C - Jul 8, 20:15 UTCJul 8, 21:30 UTC1h 15m
2026-07-08 N7499C - Jul 8, 16:15 UTCJul 8, 17:35 UTC1h 20m
2026-07-06 N7499C - Jul 6, 22:45 UTCJul 6, 23:30 UTC45m
2026-07-06 N7499C - Jul 6, 20:25 UTCJul 6, 21:40 UTC1h 15m
2026-07-05 N7499C - Jul 5, 21:45 UTCJul 5, 22:35 UTC50m
2026-07-05 N7499C - Jul 5, 19:30 UTCJul 5, 20:15 UTC45m
2026-07-05 N7499C - Jul 5, 17:55 UTCJul 5, 18:55 UTC1h 0m
2026-07-04 N7499C - Jul 4, 22:20 UTCJul 4, 22:40 UTC20m
2026-07-04 N7499C - Jul 4, 20:40 UTCJul 4, 21:10 UTC30m
2026-07-04 N7499C HIO → HIO Jul 4, 00:35 UTCJul 4, 00:55 UTC20m
2026-07-03 N7499C - Jul 3, 15:35 UTCJul 3, 16:25 UTC50m
2026-07-02 N7499C - Jul 2, 21:05 UTCJul 2, 22:25 UTC1h 20m
2026-07-02 N7499C - Jul 2, 17:25 UTCJul 2, 19:10 UTC1h 45m
2026-07-01 N7499C - Jul 1, 17:50 UTCJul 1, 18:05 UTC15m
2026-07-01 N7499C HIO → HIO Jul 1, 00:15 UTCJul 1, 01:25 UTC1h 10m
2026-06-30 N7499C - Jun 30, 21:25 UTCJun 30, 22:00 UTC35m
2026-06-30 N7499C - Jun 30, 20:05 UTCJun 30, 20:55 UTC50m
2026-06-29 N7499C - Jun 29, 23:39 UTCJun 30, 00:35 UTC55m
2026-06-28 N7499C - Jun 28, 19:59 UTCJun 28, 20:50 UTC50m
2026-06-25 N7499C - Jun 25, 20:19 UTCJun 25, 21:40 UTC1h 20m
2026-06-25 N7499C - Jun 25, 18:24 UTCJun 25, 18:50 UTC25m
2026-06-25 N7499C HIO → SLE Jun 25, 16:35 UTCJun 25, 17:30 UTC55m
2026-06-25 N7499C - Jun 25, 00:05 UTCJun 25, 01:14 UTC1h 10m
2026-06-24 N7499C - Jun 24, 21:09 UTCJun 24, 22:35 UTC1h 25m
2026-06-24 N7499C - Jun 24, 17:10 UTCJun 24, 17:20 UTC10m
2026-06-24 N7499C - Jun 24, 15:00 UTCJun 24, 16:29 UTC1h 30m

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 N7499C page for operator, model, and routing details .

Mode-S AA178F frequently asked

What is Mode-S code AA178F?
AA178F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7499C.
Where is Mode-S AA178F registered?
Mode-S code AA178F 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 AA178F 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 AA178F, octal 52413617, decimal 11,147,151.
What flights does AA178F operate?
Mode-S AA178F has broadcast 1 distinct callsign, including N7499C.