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sensors Mode-S transponder

A9D159

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N73113 · CESSNA 172 Skyhawk · operated by TOP FLIGHT AVIATION INC

Hex
A9D159
Octal
52350531
Decimal
11,129,177
Country
US
Tail
N73113
Type
C172
Broadcasting now · callsign N73113 · 4,425 ft
Flights observed
229
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 22:15 UTC

Current position

A9D159 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A9D159 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
N73113 - 229 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N73113 - Jul 26, 21:50 UTCJul 26, 22:15 UTC25m
2026-07-26 N73113 - Jul 26, 17:40 UTCJul 26, 18:50 UTC1h 10m
2026-07-25 N73113 - Jul 25, 19:10 UTCJul 25, 20:20 UTC1h 10m
2026-07-25 N73113 - Jul 25, 15:55 UTCJul 25, 16:30 UTC35m
2026-07-24 N73113 - Jul 24, 19:30 UTCJul 24, 20:35 UTC1h 5m
2026-07-24 N73113 - Jul 24, 17:35 UTCJul 24, 18:20 UTC45m
2026-07-23 N73113 - Jul 23, 22:50 UTCJul 23, 23:25 UTC35m
2026-07-23 N73113 - Jul 23, 21:00 UTCJul 23, 21:55 UTC55m
2026-07-23 N73113 - Jul 23, 17:35 UTCJul 23, 18:45 UTC1h 10m
2026-07-23 N73113 - Jul 23, 15:40 UTCJul 23, 16:55 UTC1h 15m
2026-07-23 N73113 - Jul 23, 00:30 UTCJul 23, 01:05 UTC35m
2026-07-22 N73113 - Jul 22, 23:00 UTCJul 22, 23:35 UTC35m
2026-07-22 N73113 - Jul 22, 17:15 UTCJul 22, 17:55 UTC40m
2026-07-22 N73113 - Jul 22, 14:50 UTCJul 22, 16:25 UTC1h 35m
2026-07-21 N73113 - Jul 21, 22:25 UTCJul 22, 00:10 UTC1h 45m
2026-07-21 N73113 - Jul 21, 19:35 UTCJul 21, 20:35 UTC1h 0m
2026-07-21 N73113 - Jul 21, 15:50 UTCJul 21, 16:50 UTC1h 0m
2026-07-20 N73113 - Jul 20, 22:40 UTCJul 20, 23:25 UTC45m
2026-07-20 N73113 - Jul 20, 17:10 UTCJul 20, 17:55 UTC45m
2026-07-20 N73113 - Jul 20, 14:35 UTCJul 20, 16:10 UTC1h 35m
2026-07-19 N73113 - Jul 19, 16:20 UTCJul 19, 18:05 UTC1h 45m
2026-07-19 N73113 - Jul 19, 16:00 UTCJul 19, 16:15 UTC15m
2026-07-19 N73113 - Jul 19, 13:40 UTCJul 19, 15:20 UTC1h 40m
2026-07-18 N73113 - Jul 18, 21:15 UTCJul 18, 21:50 UTC35m
2026-07-18 N73113 - Jul 18, 19:35 UTCJul 18, 19:45 UTC10m
2026-07-18 N73113 - Jul 18, 18:45 UTCJul 18, 19:30 UTC45m
2026-07-18 N73113 - Jul 18, 14:50 UTCJul 18, 17:00 UTC2h 10m
2026-07-17 N73113 - Jul 17, 17:30 UTCJul 17, 18:10 UTC40m
2026-07-17 N73113 - Jul 17, 15:55 UTCJul 17, 16:40 UTC45m
2026-07-17 N73113 - Jul 17, 03:05 UTCJul 17, 03:39 UTC35m
2026-07-16 N73113 - Jul 16, 23:29 UTCJul 17, 00:25 UTC55m
2026-07-16 N73113 - Jul 16, 19:45 UTCJul 16, 22:15 UTC2h 30m
2026-07-16 N73113 - Jul 16, 17:35 UTCJul 16, 18:40 UTC1h 5m
2026-07-16 N73113 - Jul 16, 15:49 UTCJul 16, 16:44 UTC55m
2026-07-15 N73113 - Jul 15, 17:50 UTCJul 15, 18:35 UTC45m
2026-07-15 N73113 - Jul 15, 15:45 UTCJul 15, 16:35 UTC50m
2026-07-15 N73113 - Jul 15, 01:50 UTCJul 15, 02:25 UTC35m
2026-07-14 N73113 - Jul 14, 22:10 UTCJul 14, 22:50 UTC39m
2026-07-14 N73113 - Jul 14, 19:45 UTCJul 14, 20:55 UTC1h 10m
2026-07-14 N73113 - Jul 14, 17:35 UTCJul 14, 18:40 UTC1h 5m
2026-07-14 N73113 - Jul 14, 14:50 UTCJul 14, 16:40 UTC1h 50m
2026-07-13 N73113 - Jul 13, 15:45 UTCJul 13, 16:55 UTC1h 10m
2026-07-11 N73113 - Jul 11, 19:40 UTCJul 11, 20:20 UTC40m
2026-07-11 N73113 - Jul 11, 17:15 UTCJul 11, 18:30 UTC1h 15m
2026-07-10 N73113 - Jul 10, 22:25 UTCJul 10, 23:05 UTC40m
2026-07-10 N73113 - Jul 10, 17:55 UTCJul 10, 18:55 UTC1h 0m
2026-07-10 N73113 - Jul 10, 15:45 UTCJul 10, 16:55 UTC1h 10m
2026-07-09 N73113 - Jul 9, 20:50 UTCJul 9, 21:40 UTC50m
2026-07-09 N73113 - Jul 9, 15:55 UTCJul 9, 16:45 UTC50m
2026-07-09 N73113 - Jul 9, 04:00 UTCJul 9, 05:10 UTC1h 10m

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 N73113 page for operator, model, and routing details .

Mode-S A9D159 frequently asked

What is Mode-S code A9D159?
A9D159 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N73113.
Where is Mode-S A9D159 registered?
Mode-S code A9D159 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 A9D159 broadcasting right now?
Yes. Mode-S A9D159 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9D159, octal 52350531, decimal 11,129,177.
What flights does A9D159 operate?
Mode-S A9D159 has broadcast 1 distinct callsign, including N73113.