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sensors Mode-S transponder

A4D169

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4097M · CESSNA 172R Cutlass RG · operated by N4097M LLC

Hex
A4D169
Octal
51150551
Decimal
10,801,513
Country
US
Tail
N4097M
Type
C72R
Broadcasting now · callsign N4097M · 2,400 ft
Flights observed
209
Distinct callsigns
1
Country
US
Last broadcast
18h ago

Current position

A4D169 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A4D169 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
N4097M - 209 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N4097M - Jul 17, 16:55 UTCJul 17, 17:25 UTC30m
2026-07-17 N4097M - Jul 17, 15:00 UTCJul 17, 15:15 UTC15m
2026-07-17 N4097M - Jul 17, 13:45 UTCJul 17, 13:55 UTC10m
2026-07-16 N4097M - Jul 16, 18:50 UTCJul 16, 19:10 UTC20m
2026-07-16 N4097M - Jul 16, 18:05 UTCJul 16, 18:15 UTC10m
2026-07-16 N4097M - Jul 16, 14:20 UTCJul 16, 15:19 UTC1h 0m
2026-07-16 N4097M - Jul 16, 11:30 UTCJul 16, 13:00 UTC1h 30m
2026-07-15 N4097M - Jul 15, 22:15 UTCJul 15, 22:30 UTC15m
2026-07-15 N4097M - Jul 15, 20:45 UTCJul 15, 21:00 UTC15m
2026-07-15 N4097M - Jul 15, 14:15 UTCJul 15, 14:45 UTC30m
2026-07-15 N4097M SUA → SUA Jul 15, 11:45 UTCJul 15, 13:05 UTC1h 20m
2026-07-14 N4097M - Jul 14, 11:45 UTCJul 14, 13:00 UTC1h 15m
2026-07-14 N4097M - Jul 14, 00:00 UTCJul 14, 00:10 UTC10m
2026-07-13 N4097M - Jul 13, 22:40 UTCJul 13, 23:10 UTC30m
2026-07-13 N4097M - Jul 13, 18:35 UTCJul 13, 19:55 UTC1h 20m
2026-07-13 N4097M - Jul 13, 14:25 UTCJul 13, 15:20 UTC55m
2026-07-10 N4097M SUA → SUA Jul 10, 10:40 UTCJul 10, 11:20 UTC40m
2026-07-09 N4097M - Jul 9, 22:20 UTCJul 9, 23:55 UTC1h 35m
2026-07-09 N4097M - Jul 9, 19:45 UTCJul 9, 21:15 UTC1h 30m
2026-07-09 N4097M - Jul 9, 15:00 UTCJul 9, 15:20 UTC20m
2026-07-09 N4097M - Jul 9, 14:05 UTCJul 9, 14:20 UTC15m
2026-07-09 N4097M - Jul 9, 10:40 UTCJul 9, 11:55 UTC1h 15m
2026-07-08 N4097M SUA → SUA Jul 8, 22:25 UTCJul 8, 23:45 UTC1h 20m
2026-07-08 N4097M - Jul 8, 15:15 UTCJul 8, 15:25 UTC10m
2026-07-08 N4097M - Jul 8, 14:15 UTCJul 8, 14:30 UTC15m
2026-07-08 N4097M - Jul 8, 12:50 UTCJul 8, 13:20 UTC30m
2026-07-08 N4097M - Jul 8, 11:50 UTCJul 8, 12:10 UTC20m
2026-07-07 N4097M SUA → SUA Jul 7, 14:25 UTCJul 7, 15:40 UTC1h 15m
2026-07-02 N4097M - Jul 2, 19:50 UTCJul 2, 21:25 UTC1h 35m
2026-07-01 N4097M - Jul 1, 21:20 UTCJul 1, 22:45 UTC1h 25m
2026-07-01 N4097M - Jul 1, 18:55 UTCJul 1, 20:20 UTC1h 25m
2026-07-01 N4097M - Jul 1, 14:40 UTCJul 1, 15:40 UTC1h 0m
2026-06-30 N4097M - Jun 30, 16:15 UTCJun 30, 17:45 UTC1h 30m
2026-06-30 N4097M - Jun 30, 13:20 UTCJun 30, 13:50 UTC30m
2026-06-30 N4097M SUA → SUA Jun 30, 10:55 UTCJun 30, 12:15 UTC1h 20m
2026-06-29 N4097M SUA → SUA Jun 29, 22:05 UTCJun 30, 00:14 UTC2h 10m
2026-06-29 N4097M SUA → SUA Jun 29, 19:09 UTCJun 29, 20:44 UTC1h 35m
2026-06-28 N4097M - Jun 28, 13:29 UTCJun 28, 14:54 UTC1h 25m
2026-06-27 N4097M SUA → SUA Jun 27, 15:00 UTCJun 27, 15:19 UTC20m
2026-06-27 N4097M - Jun 27, 12:50 UTCJun 27, 14:09 UTC1h 20m
2026-06-26 N4097M - Jun 26, 14:39 UTCJun 26, 16:00 UTC1h 20m
2026-06-25 N4097M - Jun 25, 14:50 UTCJun 25, 15:40 UTC50m
2026-06-25 N4097M MLB → SUA Jun 25, 01:44 UTCJun 25, 03:20 UTC1h 35m
2026-06-24 N4097M - Jun 24, 21:29 UTCJun 24, 21:40 UTC10m
2026-06-24 N4097M - Jun 24, 17:59 UTCJun 24, 18:34 UTC35m
2026-06-24 N4097M - Jun 24, 15:14 UTCJun 24, 16:19 UTC1h 5m
2026-06-24 N4097M - Jun 24, 13:05 UTCJun 24, 13:34 UTC30m
2026-06-24 N4097M - Jun 24, 12:20 UTCJun 24, 12:30 UTC10m
2026-06-23 N4097M SUA → SUA Jun 23, 19:50 UTCJun 23, 21:14 UTC1h 25m
2026-06-23 N4097M - Jun 23, 15:19 UTCJun 23, 16:35 UTC1h 15m

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 N4097M page for operator, model, and routing details .

Mode-S A4D169 frequently asked

What is Mode-S code A4D169?
A4D169 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4097M.
Where is Mode-S A4D169 registered?
Mode-S code A4D169 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 A4D169 broadcasting right now?
Yes. Mode-S A4D169 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4D169, octal 51150551, decimal 10,801,513.
What flights does A4D169 operate?
Mode-S A4D169 has broadcast 1 distinct callsign, including N4097M.