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sensors Mode-S transponder

A17E3A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1958M · AIRBUS HELICOPTERS EC-130 · operated by MJB INVESTMENTS LLC

Hex
A17E3A
Octal
50277072
Decimal
10,583,610
Country
US
Tail
N1958M
Type
EC30
No current signal · last broadcast 1d ago
Flights observed
100
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A17E3A.

Country allocation

The ICAO 24-bit address A17E3A 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
N1958M - 100 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N1958M - Jul 17, 16:10 UTCJul 17, 17:05 UTC55m
2026-07-16 N1958M - Jul 16, 17:30 UTCJul 16, 17:45 UTC15m
2026-07-15 N1958M - Jul 15, 12:50 UTCJul 15, 13:40 UTC50m
2026-07-14 N1958M - Jul 14, 20:10 UTCJul 14, 21:00 UTC50m
2026-07-14 N1958M - Jul 14, 18:35 UTCJul 14, 19:25 UTC50m
2026-07-14 N1958M - Jul 14, 17:35 UTCJul 14, 18:30 UTC55m
2026-07-14 N1958M - Jul 14, 14:30 UTCJul 14, 16:05 UTC1h 35m
2026-07-14 N1958M - Jul 14, 12:55 UTCJul 14, 13:30 UTC35m
2026-07-14 N1958M - Jul 14, 11:55 UTCJul 14, 12:05 UTC10m
2026-07-13 N1958M - Jul 13, 17:20 UTCJul 13, 18:05 UTC45m
2026-07-13 N1958M - Jul 13, 14:10 UTCJul 13, 15:00 UTC50m
2026-07-12 N1958M - Jul 12, 21:25 UTCJul 12, 21:55 UTC30m
2026-07-12 N1958M - Jul 12, 18:40 UTCJul 12, 19:50 UTC1h 10m
2026-07-12 N1958M - Jul 12, 16:05 UTCJul 12, 17:10 UTC1h 5m
2026-07-12 N1958M - Jul 12, 13:40 UTCJul 12, 15:20 UTC1h 40m
2026-07-11 N1958M - Jul 11, 23:00 UTCJul 11, 23:10 UTC10m
2026-07-11 N1958M - Jul 11, 20:45 UTCJul 11, 21:30 UTC45m
2026-07-11 N1958M - Jul 11, 17:45 UTCJul 11, 18:25 UTC40m
2026-07-08 N1958M - Jul 8, 17:40 UTCJul 8, 18:15 UTC35m
2026-07-08 N1958M - Jul 8, 16:35 UTCJul 8, 16:55 UTC20m
2026-07-08 N1958M - Jul 8, 14:25 UTCJul 8, 14:50 UTC25m
2026-07-07 N1958M BFI → BFI Jul 7, 23:25 UTCJul 8, 00:00 UTC35m
2026-07-07 N1958M - Jul 7, 21:10 UTCJul 7, 21:35 UTC25m
2026-07-06 N1958M - Jul 6, 17:15 UTCJul 6, 17:25 UTC10m
2026-07-06 N1958M - Jul 6, 16:25 UTCJul 6, 16:45 UTC20m
2026-07-02 N1958M - Jul 2, 21:00 UTCJul 2, 21:25 UTC25m
2026-07-02 N1958M - Jul 2, 19:20 UTCJul 2, 20:10 UTC50m
2026-07-02 N1958M BFI → TWD Jul 2, 18:10 UTCJul 2, 18:40 UTC30m
2026-06-23 N1958M - Jun 23, 21:24 UTCJun 23, 22:29 UTC1h 5m
2026-06-23 N1958M - Jun 23, 19:44 UTCJun 23, 20:15 UTC30m
2026-06-22 N1958M - Jun 22, 21:40 UTCJun 22, 21:49 UTC10m
2026-06-22 N1958M - Jun 22, 18:49 UTCJun 22, 19:34 UTC45m
2026-06-19 N1958M - Jun 19, 17:29 UTCJun 19, 17:39 UTC10m
2026-06-19 N1958M - Jun 19, 16:25 UTCJun 19, 16:34 UTC10m
2026-06-18 N1958M - Jun 18, 21:10 UTCJun 18, 21:25 UTC15m
2026-06-15 N1958M - Jun 15, 18:45 UTCJun 15, 18:50 UTC5m
2026-06-15 N1958M - Jun 15, 01:00 UTCJun 15, 01:10 UTC10m
2026-06-14 N1958M - Jun 14, 18:45 UTCJun 14, 18:55 UTC10m
2026-06-14 N1958M - Jun 14, 03:00 UTCJun 14, 03:10 UTC10m
2026-06-14 N1958M - Jun 14, 01:10 UTCJun 14, 01:20 UTC10m
2026-06-14 N1958M - Jun 14, 00:05 UTCJun 14, 00:15 UTC10m
2026-06-13 N1958M - Jun 13, 03:25 UTCJun 13, 03:35 UTC10m
2026-06-12 N1958M - Jun 12, 20:45 UTCJun 12, 20:55 UTC10m
2026-06-12 N1958M - Jun 12, 19:50 UTCJun 12, 20:00 UTC10m
2026-06-12 N1958M - Jun 12, 05:20 UTCJun 12, 05:40 UTC20m
2026-06-12 N1958M HIO → BFI Jun 12, 03:40 UTCJun 12, 04:45 UTC1h 5m
2026-06-11 N1958M - Jun 11, 17:05 UTCJun 11, 18:25 UTC1h 20m
2026-06-10 N1958M - Jun 10, 18:05 UTCJun 10, 19:35 UTC1h 30m
2026-06-08 N1958M - Jun 8, 00:45 UTCJun 8, 01:05 UTC20m
2026-06-07 N1958M - Jun 7, 21:35 UTCJun 7, 21:45 UTC10m

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 N1958M page for operator, model, and routing details .

Mode-S A17E3A frequently asked

What is Mode-S code A17E3A?
A17E3A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1958M.
Where is Mode-S A17E3A registered?
Mode-S code A17E3A 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 A17E3A broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17E3A, octal 50277072, decimal 10,583,610.
What flights does A17E3A operate?
Mode-S A17E3A has broadcast 1 distinct callsign, including N1958M.