sensors Mode-S transponder

A3E66B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N350SP · operated by SAMARITANS PURSE

Hex
A3E66B
Octal
50763153
Decimal
10,741,355
Country
US
Tail
N350SP
No current signal · last broadcast 8d ago
Flights observed
54
Distinct callsigns
1
Country
US
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S A3E66B.

Country allocation

The ICAO 24-bit address A3E66B 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
N350SP - 54 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-06 N350SP - Jul 6, 18:30 UTCJul 6, 19:00 UTC30m
2026-07-06 N350SP - Jul 6, 15:55 UTCJul 6, 16:15 UTC20m
2026-07-06 N350SP - Jul 6, 12:15 UTCJul 6, 12:45 UTC30m
2026-07-05 N350SP - Jul 5, 16:15 UTCJul 5, 16:30 UTC15m
2026-07-05 N350SP - Jul 5, 12:20 UTCJul 5, 12:50 UTC30m
2026-07-02 N350SP - Jul 2, 22:45 UTCJul 2, 23:05 UTC20m
2026-07-02 N350SP - Jul 2, 19:10 UTCJul 2, 19:35 UTC25m
2026-07-02 N350SP - Jul 2, 17:15 UTCJul 2, 17:40 UTC25m
2026-07-02 N350SP - Jul 2, 13:40 UTCJul 2, 14:05 UTC25m
2026-07-01 N350SP - Jul 1, 23:30 UTCJul 1, 23:50 UTC20m
2026-07-01 N350SP - Jul 1, 19:50 UTCJul 1, 20:15 UTC25m
2026-07-01 N350SP - Jul 1, 14:30 UTCJul 1, 18:25 UTC3h 55m
2026-07-01 N350SP - Jul 1, 00:25 UTCJul 1, 00:45 UTC20m
2026-06-30 N350SP - Jun 30, 20:30 UTCJun 30, 20:55 UTC25m
2026-06-30 N350SP - Jun 30, 18:40 UTCJun 30, 19:05 UTC25m
2026-06-30 N350SP - Jun 30, 14:15 UTCJun 30, 14:45 UTC30m
2026-06-30 N350SP - Jun 30, 01:40 UTCJun 30, 02:00 UTC20m
2026-06-29 N350SP - Jun 29, 21:19 UTCJun 29, 21:44 UTC25m
2026-06-28 N350SP - Jun 28, 22:45 UTCJun 28, 23:04 UTC20m
2026-06-28 N350SP - Jun 28, 18:29 UTCJun 28, 18:55 UTC25m
2026-06-28 N350SP - Jun 28, 14:04 UTCJun 28, 14:54 UTC50m
2026-06-28 N350SP - Jun 28, 11:25 UTCJun 28, 13:25 UTC2h 0m
2026-06-24 N350SP - Jun 24, 20:14 UTCJun 24, 22:00 UTC1h 45m
2026-06-24 N350SP - Jun 24, 17:40 UTCJun 24, 19:34 UTC1h 55m
2026-06-17 N350SP - Jun 17, 18:15 UTCJun 17, 19:10 UTC55m
2026-06-02 N350SP - Jun 2, 11:40 UTCJun 2, 12:45 UTC1h 5m
2026-06-01 N350SP - Jun 1, 20:15 UTCJun 1, 23:35 UTC3h 20m
2026-06-01 N350SP - Jun 1, 10:30 UTCJun 1, 14:20 UTC3h 50m
2026-05-26 N350SP - May 26, 22:09 UTCMay 26, 23:10 UTC1h 0m
2026-05-26 N350SP - May 26, 19:34 UTCMay 26, 20:40 UTC1h 5m
2026-05-22 N350SP - May 22, 18:35 UTCMay 22, 19:45 UTC1h 10m
2026-05-22 N350SP - May 22, 14:35 UTCMay 22, 15:30 UTC55m
2026-05-20 N350SP - May 20, 13:10 UTCMay 20, 14:05 UTC55m
2026-05-20 N350SP - May 20, 11:15 UTCMay 20, 12:15 UTC1h 0m
2026-05-19 N350SP - May 19, 19:15 UTCMay 19, 20:10 UTC55m
2026-05-19 N350SP - May 19, 14:15 UTCMay 19, 15:20 UTC1h 5m
2026-05-18 N350SP - May 18, 02:00 UTCMay 18, 02:10 UTC10m
2026-05-17 N350SP - May 17, 21:50 UTCMay 17, 22:45 UTC55m
2026-05-16 N350SP - May 16, 15:01 UTCMay 16, 16:00 UTC1h 0m
2026-05-13 N350SP - May 13, 22:10 UTCMay 13, 23:50 UTC1h 40m
2026-05-13 N350SP - May 13, 18:10 UTCMay 13, 18:20 UTC10m
2026-05-13 N350SP - May 13, 11:40 UTCMay 13, 13:20 UTC1h 40m
2026-05-11 N350SP - May 11, 14:40 UTCMay 11, 16:15 UTC1h 35m
2026-05-11 N350SP - May 11, 11:30 UTCMay 11, 12:45 UTC1h 15m
2026-05-09 N350SP - May 9, 21:50 UTCMay 9, 23:05 UTC1h 15m
2026-05-09 N350SP - May 9, 14:40 UTCMay 9, 16:45 UTC2h 5m
2026-05-09 N350SP - May 9, 13:30 UTCMay 9, 13:45 UTC15m
2026-05-08 N350SP - May 8, 14:45 UTCMay 8, 18:15 UTC3h 30m
2026-05-07 N350SP - May 7, 16:15 UTCMay 7, 18:20 UTC2h 5m
2026-05-07 N350SP - May 7, 12:20 UTCMay 7, 15:40 UTC3h 20m

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 N350SP page for operator, model, and routing details .

Mode-S A3E66B frequently asked

What is Mode-S code A3E66B?
A3E66B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N350SP.
Where is Mode-S A3E66B registered?
Mode-S code A3E66B 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 A3E66B broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3E66B, octal 50763153, decimal 10,741,355.
What flights does A3E66B operate?
Mode-S A3E66B has broadcast 1 distinct callsign, including N350SP.