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sensors Mode-S transponder

A81705

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N620J · PIPER PA-28-140/150/160/180 · operated by EXECUTIVE FLYERS INC

Hex
A81705
Octal
52013405
Decimal
11,015,941
Country
US
Tail
N620J
Type
P28A
No current signal · last broadcast Jul 25, 23:00 UTC
Flights observed
182
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 23:00 UTC

Last known position

Most recent position reported by Mode-S A81705.

Country allocation

The ICAO 24-bit address A81705 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
N620J - 182 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N620J SAC → SAC Jul 25, 21:25 UTCJul 25, 23:00 UTC1h 35m
2026-07-25 N620J - Jul 25, 19:15 UTCJul 25, 20:10 UTC55m
2026-07-25 N620J - Jul 25, 14:50 UTCJul 25, 16:35 UTC1h 45m
2026-07-24 N620J - Jul 24, 22:35 UTCJul 25, 00:50 UTC2h 15m
2026-07-24 N620J - Jul 24, 16:45 UTCJul 24, 17:05 UTC20m
2026-07-24 N620J - Jul 24, 15:50 UTCJul 24, 16:15 UTC25m
2026-07-24 N620J SAC → SAC Jul 24, 04:25 UTCJul 24, 05:15 UTC50m
2026-07-23 N620J SAC → SAC Jul 23, 21:35 UTCJul 23, 22:25 UTC50m
2026-07-23 N620J - Jul 23, 19:05 UTCJul 23, 20:00 UTC55m
2026-07-23 N620J - Jul 23, 16:45 UTCJul 23, 17:40 UTC55m
2026-07-23 N620J SAC → SAC Jul 23, 15:00 UTCJul 23, 15:50 UTC50m
2026-07-23 N620J SAC → SAC Jul 23, 00:50 UTCJul 23, 02:20 UTC1h 30m
2026-07-22 N620J SAC → SAC Jul 22, 22:30 UTCJul 22, 23:50 UTC1h 20m
2026-07-22 N620J SAC → SAC Jul 22, 19:20 UTCJul 22, 19:55 UTC35m
2026-07-22 N620J SAC → SAC Jul 22, 18:05 UTCJul 22, 18:15 UTC10m
2026-07-22 N620J - Jul 22, 01:30 UTCJul 22, 02:00 UTC30m
2026-07-21 N620J SAC → SAC Jul 21, 23:10 UTCJul 22, 00:00 UTC50m
2026-07-21 N620J - Jul 21, 21:15 UTCJul 21, 22:05 UTC50m
2026-07-21 N620J - Jul 21, 19:30 UTCJul 21, 20:45 UTC1h 15m
2026-07-21 N620J SAC → SAC Jul 21, 16:40 UTCJul 21, 17:35 UTC55m
2026-07-21 N620J - Jul 21, 14:05 UTCJul 21, 14:50 UTC45m
2026-07-21 N620J - Jul 21, 00:15 UTCJul 21, 01:45 UTC1h 30m
2026-07-20 N620J - Jul 20, 19:15 UTCJul 20, 19:25 UTC10m
2026-07-20 N620J - Jul 20, 18:35 UTCJul 20, 19:05 UTC30m
2026-07-20 N620J - Jul 20, 17:35 UTCJul 20, 18:05 UTC30m
2026-07-20 N620J - Jul 20, 01:05 UTCJul 20, 03:05 UTC2h 0m
2026-07-19 N620J SAC → SBP Jul 19, 18:15 UTCJul 19, 20:15 UTC2h 0m
2026-07-18 N620J - Jul 18, 15:00 UTCJul 18, 16:45 UTC1h 45m
2026-07-17 N620J - Jul 17, 20:10 UTCJul 17, 20:29 UTC20m
2026-07-17 N620J - Jul 17, 18:34 UTCJul 17, 19:00 UTC25m
2026-07-17 N620J SAC → SAC Jul 17, 16:34 UTCJul 17, 17:30 UTC55m
2026-07-15 N620J SAC → SAC Jul 15, 01:30 UTCJul 15, 03:10 UTC1h 40m
2026-07-11 N620J SAC → SAC Jul 11, 17:30 UTCJul 11, 18:30 UTC1h 0m
2026-07-09 N620J SAC → SAC Jul 9, 00:55 UTCJul 9, 01:20 UTC25m
2026-07-05 N620J - Jul 5, 19:10 UTCJul 5, 20:15 UTC1h 5m
2026-07-01 N620J SAC → SAC Jul 1, 01:10 UTCJul 1, 01:45 UTC35m
2026-06-30 N620J SAC → SAC Jun 30, 19:00 UTCJun 30, 20:00 UTC1h 0m
2026-06-30 N620J - Jun 30, 16:25 UTCJun 30, 17:25 UTC1h 0m
2026-06-30 N620J SAC → SAC Jun 30, 14:10 UTCJun 30, 15:20 UTC1h 10m
2026-06-29 N620J - Jun 29, 22:00 UTCJun 30, 00:04 UTC2h 5m
2026-06-29 N620J SAC → SAC Jun 29, 19:20 UTCJun 29, 20:44 UTC1h 25m
2026-06-29 N620J SAC → SAC Jun 29, 17:14 UTCJun 29, 18:10 UTC55m
2026-06-29 N620J SAC → SAC Jun 29, 15:04 UTCJun 29, 15:54 UTC50m
2026-06-28 N620J - Jun 28, 00:25 UTCJun 28, 01:25 UTC1h 0m
2026-06-27 N620J - Jun 27, 20:59 UTCJun 27, 22:09 UTC1h 10m
2026-06-26 N620J SAC → SAC Jun 26, 20:04 UTCJun 26, 21:24 UTC1h 20m
2026-06-26 N620J SAC → SAC Jun 26, 13:55 UTCJun 26, 14:44 UTC50m
2026-06-26 N620J SAC → SAC Jun 26, 01:05 UTCJun 26, 02:30 UTC1h 25m
2026-06-25 N620J - Jun 25, 22:20 UTCJun 25, 22:29 UTC10m
2026-06-25 N620J - Jun 25, 21:10 UTCJun 25, 22:14 UTC1h 5m

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 N620J page for operator, model, and routing details .

Mode-S A81705 frequently asked

What is Mode-S code A81705?
A81705 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N620J.
Where is Mode-S A81705 registered?
Mode-S code A81705 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 A81705 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A81705, octal 52013405, decimal 11,015,941.
What flights does A81705 operate?
Mode-S A81705 has broadcast 1 distinct callsign, including N620J.