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sensors Mode-S transponder

A0AF06

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N143NE · AIRBUS HELICOPTERS EC-145 · operated by NEW ENGLAND LIFE FLIGHT INC DBA, BOSTON MEDFLIGHT

Hex
A0AF06
Octal
50127406
Decimal
10,530,566
Country
US
Tail
N143NE
Type
EC45
No current signal · last broadcast Jun 29, 20:00 UTC
Flights observed
291
Distinct callsigns
1
Country
US
Last broadcast
Jun 29, 20:00 UTC

Last known position

Most recent position reported by Mode-S A0AF06.

Country allocation

The ICAO 24-bit address A0AF06 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
N143NE - 291 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-29 N143NE - Jun 29, 19:20 UTCJun 29, 20:00 UTC40m
2026-06-29 N143NE - Jun 29, 18:14 UTCJun 29, 18:44 UTC30m
2026-06-29 N143NE - Jun 29, 00:29 UTCJun 29, 00:44 UTC15m
2026-06-28 N143NE - Jun 28, 21:55 UTCJun 28, 23:20 UTC1h 25m
2026-06-27 N143NE - Jun 27, 23:29 UTCJun 27, 23:39 UTC10m
2026-06-27 N143NE - Jun 27, 21:59 UTCJun 27, 22:09 UTC10m
2026-06-27 N143NE - Jun 27, 19:49 UTCJun 27, 20:04 UTC15m
2026-06-27 N143NE - Jun 27, 18:39 UTCJun 27, 18:49 UTC10m
2026-06-27 N143NE - Jun 27, 17:14 UTCJun 27, 17:25 UTC10m
2026-06-26 N143NE - Jun 26, 21:10 UTCJun 26, 21:24 UTC15m
2026-06-26 N143NE - Jun 26, 20:20 UTCJun 26, 20:34 UTC15m
2026-06-26 N143NE - Jun 26, 19:20 UTCJun 26, 19:35 UTC15m
2026-06-26 N143NE - Jun 26, 18:39 UTCJun 26, 18:49 UTC10m
2026-06-26 N143NE - Jun 26, 17:15 UTCJun 26, 17:54 UTC40m
2026-06-26 N143NE - Jun 26, 00:39 UTCJun 26, 01:50 UTC1h 10m
2026-06-25 N143NE - Jun 25, 23:34 UTCJun 25, 23:59 UTC25m
2026-06-25 N143NE - Jun 25, 22:20 UTCJun 25, 22:39 UTC20m
2026-06-25 N143NE - Jun 25, 19:34 UTCJun 25, 19:49 UTC15m
2026-06-25 N143NE - Jun 25, 18:29 UTCJun 25, 18:50 UTC20m
2026-06-25 N143NE - Jun 25, 17:20 UTCJun 25, 17:30 UTC10m
2026-06-24 N143NE - Jun 24, 23:10 UTCJun 25, 00:09 UTC1h 0m
2026-06-24 N143NE - Jun 24, 21:34 UTCJun 24, 22:39 UTC1h 5m
2026-06-24 N143NE - Jun 24, 20:20 UTCJun 24, 20:49 UTC30m
2026-06-24 N143NE - Jun 24, 19:24 UTCJun 24, 19:44 UTC20m
2026-06-24 N143NE - Jun 24, 18:29 UTCJun 24, 18:39 UTC10m
2026-06-24 N143NE - Jun 24, 17:05 UTCJun 24, 17:34 UTC30m
2026-06-22 N143NE - Jun 22, 20:19 UTCJun 22, 20:34 UTC15m
2026-06-22 N143NE - Jun 22, 18:44 UTCJun 22, 19:49 UTC1h 5m
2026-06-22 N143NE - Jun 22, 03:40 UTCJun 22, 03:50 UTC10m
2026-06-22 N143NE - Jun 22, 02:34 UTCJun 22, 02:59 UTC25m
2026-06-22 N143NE - Jun 22, 00:55 UTCJun 22, 01:25 UTC30m
2026-06-21 N143NE - Jun 21, 23:24 UTCJun 22, 00:10 UTC45m
2026-06-21 N143NE - Jun 21, 18:04 UTCJun 21, 18:29 UTC25m
2026-06-21 N143NE - Jun 21, 15:44 UTCJun 21, 16:04 UTC20m
2026-06-21 N143NE - Jun 21, 00:40 UTCJun 21, 00:55 UTC15m
2026-06-20 N143NE - Jun 20, 22:45 UTCJun 20, 23:50 UTC1h 5m
2026-06-20 N143NE - Jun 20, 21:40 UTCJun 20, 21:49 UTC10m
2026-06-20 N143NE - Jun 20, 20:34 UTCJun 20, 20:45 UTC10m
2026-06-20 N143NE - Jun 20, 02:29 UTCJun 20, 02:54 UTC25m
2026-06-20 N143NE - Jun 20, 01:05 UTCJun 20, 01:44 UTC40m
2026-06-19 N143NE - Jun 19, 23:04 UTCJun 20, 00:39 UTC1h 35m
2026-06-19 N143NE - Jun 19, 20:14 UTCJun 19, 20:29 UTC15m
2026-06-19 N143NE - Jun 19, 19:49 UTCJun 19, 19:59 UTC10m
2026-06-19 N143NE - Jun 19, 18:49 UTCJun 19, 18:59 UTC10m
2026-06-19 N143NE - Jun 19, 17:49 UTCJun 19, 18:20 UTC30m
2026-06-19 N143NE - Jun 19, 16:19 UTCJun 19, 16:44 UTC25m
2026-06-18 N143NE - Jun 18, 01:30 UTCJun 18, 01:50 UTC20m
2026-06-17 N143NE - Jun 17, 23:45 UTCJun 18, 00:15 UTC30m
2026-06-17 N143NE - Jun 17, 22:05 UTCJun 17, 22:35 UTC30m
2026-06-17 N143NE - Jun 17, 20:15 UTCJun 17, 20:50 UTC35m

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 N143NE page for operator, model, and routing details .

Mode-S A0AF06 frequently asked

What is Mode-S code A0AF06?
A0AF06 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N143NE.
Where is Mode-S A0AF06 registered?
Mode-S code A0AF06 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 A0AF06 broadcasting right now?
No active broadcast right now. Last signal was Jun 29, 20:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0AF06, octal 50127406, decimal 10,530,566.
What flights does A0AF06 operate?
Mode-S A0AF06 has broadcast 1 distinct callsign, including N143NE.