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sensors Mode-S transponder

ADC539

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N987AV · CESSNA 172R Cutlass RG · operated by MOORE AVIATION INC

Hex
ADC539
Octal
53342471
Decimal
11,388,217
Country
US
Tail
N987AV
Type
C72R
Broadcasting now · callsign N987AV · 3,700 ft
Flights observed
208
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Current position

ADC539 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ADC539 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
N987AV - 208 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N987AV - Jul 14, 15:20 UTCJul 14, 16:00 UTC40m
2026-07-14 N987AV - Jul 14, 14:05 UTCJul 14, 14:40 UTC35m
2026-07-14 N987AV - Jul 14, 12:25 UTCJul 14, 13:25 UTC1h 0m
2026-07-13 N987AV - Jul 13, 23:35 UTCJul 14, 00:40 UTC1h 5m
2026-07-13 N987AV BFP → BFP Jul 13, 21:45 UTCJul 13, 22:25 UTC40m
2026-07-13 N987AV - Jul 13, 20:25 UTCJul 13, 21:00 UTC35m
2026-07-13 N987AV - Jul 13, 19:00 UTCJul 13, 19:40 UTC40m
2026-07-13 N987AV - Jul 13, 17:35 UTCJul 13, 18:10 UTC35m
2026-07-13 N987AV - Jul 13, 15:25 UTCJul 13, 16:00 UTC35m
2026-07-13 N987AV - Jul 13, 13:35 UTCJul 13, 14:30 UTC55m
2026-07-13 N987AV - Jul 13, 12:25 UTCJul 13, 12:50 UTC25m
2026-07-12 N987AV - Jul 12, 15:45 UTCJul 12, 16:15 UTC30m
2026-07-12 N987AV BFP → BFP Jul 12, 13:45 UTCJul 12, 14:50 UTC1h 5m
2026-07-12 N987AV - Jul 12, 12:15 UTCJul 12, 13:05 UTC50m
2026-07-11 N987AV BFP → BFP Jul 11, 17:55 UTCJul 11, 18:45 UTC50m
2026-07-10 N987AV - Jul 10, 17:30 UTCJul 10, 18:10 UTC40m
2026-07-10 N987AV - Jul 10, 15:50 UTCJul 10, 16:20 UTC30m
2026-07-10 N987AV BFP → BFP Jul 10, 14:10 UTCJul 10, 14:40 UTC30m
2026-07-09 N987AV - Jul 9, 22:00 UTCJul 9, 22:50 UTC50m
2026-07-09 N987AV - Jul 9, 20:40 UTCJul 9, 21:20 UTC40m
2026-07-09 N987AV - Jul 9, 15:25 UTCJul 9, 16:05 UTC40m
2026-07-09 N987AV - Jul 9, 13:50 UTCJul 9, 14:30 UTC40m
2026-07-08 N987AV BFP → BFP Jul 8, 22:20 UTCJul 8, 23:30 UTC1h 10m
2026-07-08 N987AV - Jul 8, 20:25 UTCJul 8, 21:05 UTC40m
2026-07-08 N987AV - Jul 8, 18:45 UTCJul 8, 19:30 UTC45m
2026-07-07 N987AV - Jul 7, 20:25 UTCJul 7, 21:05 UTC40m
2026-07-07 N987AV - Jul 7, 19:00 UTCJul 7, 19:40 UTC40m
2026-07-07 N987AV BFP → BFP Jul 7, 17:35 UTCJul 7, 18:05 UTC30m
2026-07-02 N987AV BFP → BFP Jul 2, 22:00 UTCJul 2, 23:20 UTC1h 20m
2026-07-02 N987AV - Jul 2, 20:35 UTCJul 2, 21:20 UTC45m
2026-07-02 N987AV - Jul 2, 18:55 UTCJul 2, 19:40 UTC45m
2026-07-02 N987AV BFP → BFP Jul 2, 17:35 UTCJul 2, 18:15 UTC40m
2026-07-02 N987AV BFP → BFP Jul 2, 14:00 UTCJul 2, 15:25 UTC1h 25m
2026-07-02 N987AV - Jul 2, 12:25 UTCJul 2, 13:15 UTC50m
2026-07-01 N987AV BFP → BFP Jul 1, 20:45 UTCJul 1, 21:30 UTC45m
2026-07-01 N987AV - Jul 1, 18:50 UTCJul 1, 19:40 UTC50m
2026-07-01 N987AV - Jul 1, 15:20 UTCJul 1, 16:10 UTC50m
2026-06-30 N987AV - Jun 30, 22:00 UTCJun 30, 22:40 UTC40m
2026-06-30 N987AV - Jun 30, 20:30 UTCJun 30, 21:05 UTC35m
2026-06-30 N987AV - Jun 30, 19:00 UTCJun 30, 19:45 UTC45m
2026-06-30 N987AV BFP → BFP Jun 30, 17:35 UTCJun 30, 18:10 UTC35m
2026-06-30 N987AV - Jun 30, 15:30 UTCJun 30, 16:15 UTC45m
2026-06-30 N987AV BFP → BFP Jun 30, 13:40 UTCJun 30, 14:45 UTC1h 5m
2026-06-30 N987AV - Jun 30, 01:50 UTCJun 30, 02:30 UTC40m
2026-06-29 N987AV - Jun 29, 22:05 UTCJun 29, 22:35 UTC30m
2026-06-29 N987AV - Jun 29, 20:35 UTCJun 29, 21:14 UTC40m
2026-06-29 N987AV - Jun 29, 18:49 UTCJun 29, 20:00 UTC1h 10m
2026-06-29 N987AV - Jun 29, 17:24 UTCJun 29, 18:05 UTC40m
2026-06-29 N987AV BFP → BFP Jun 29, 15:30 UTCJun 29, 16:15 UTC45m
2026-06-29 N987AV BFP → BFP Jun 29, 12:34 UTCJun 29, 13:49 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 N987AV page for operator, model, and routing details .

Mode-S ADC539 frequently asked

What is Mode-S code ADC539?
ADC539 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N987AV.
Where is Mode-S ADC539 registered?
Mode-S code ADC539 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 ADC539 broadcasting right now?
Yes. Mode-S ADC539 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADC539, octal 53342471, decimal 11,388,217.
What flights does ADC539 operate?
Mode-S ADC539 has broadcast 1 distinct callsign, including N987AV.