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sensors Mode-S transponder

A7F40E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N611SJ · AIRBUS HELICOPTERS EC-145 · operated by ASPIRUS WAUSAU HOSPITAL INC DBA, ASPIRUS MEDEVAC

Hex
A7F40E
Octal
51772016
Decimal
11,006,990
Country
US
Tail
N611SJ
Type
EC45
No current signal · last broadcast 42m ago
Flights observed
46
Distinct callsigns
1
Country
US
Last broadcast
42m ago

Last known position

Most recent position reported by Mode-S A7F40E.

Country allocation

The ICAO 24-bit address A7F40E 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
N611SJ - 46 2026-07-14

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-07-14 N611SJ - Jul 14, 16:00 UTCJul 14, 17:15 UTC1h 15m
2026-07-14 N611SJ - Jul 14, 15:05 UTCJul 14, 15:30 UTC25m
2026-07-14 N611SJ - Jul 14, 13:50 UTCJul 14, 14:30 UTC40m
2026-07-14 N611SJ - Jul 14, 05:25 UTCJul 14, 06:20 UTC55m
2026-07-14 N611SJ - Jul 14, 04:30 UTCJul 14, 04:55 UTC25m
2026-07-14 N611SJ - Jul 14, 00:50 UTCJul 14, 02:00 UTC1h 10m
2026-07-13 N611SJ - Jul 13, 23:45 UTCJul 14, 00:00 UTC15m
2026-07-13 N611SJ - Jul 13, 05:25 UTCJul 13, 05:40 UTC15m
2026-07-13 N611SJ - Jul 13, 04:30 UTCJul 13, 04:40 UTC10m
2026-07-13 N611SJ - Jul 13, 03:05 UTCJul 13, 03:55 UTC50m
2026-07-13 N611SJ - Jul 13, 01:25 UTCJul 13, 02:30 UTC1h 5m
2026-07-12 N611SJ - Jul 12, 14:05 UTCJul 12, 14:15 UTC10m
2026-07-12 N611SJ - Jul 12, 11:15 UTCJul 12, 12:15 UTC1h 0m
2026-07-11 N611SJ - Jul 11, 22:40 UTCJul 11, 23:15 UTC35m
2026-07-11 N611SJ - Jul 11, 20:45 UTCJul 11, 21:30 UTC45m
2026-07-11 N611SJ - Jul 11, 18:30 UTCJul 11, 19:25 UTC55m
2026-07-11 N611SJ - Jul 11, 16:00 UTCJul 11, 17:25 UTC1h 25m
2026-07-11 N611SJ - Jul 11, 14:45 UTCJul 11, 14:55 UTC10m
2026-07-11 N611SJ - Jul 11, 03:35 UTCJul 11, 05:01 UTC1h 25m
2026-07-11 N611SJ - Jul 11, 02:10 UTCJul 11, 03:01 UTC50m
2026-07-10 N611SJ - Jul 10, 02:20 UTCJul 10, 03:45 UTC1h 25m
2026-07-09 N611SJ - Jul 9, 22:55 UTCJul 9, 23:55 UTC1h 0m
2026-07-07 N611SJ - Jul 7, 23:25 UTCJul 8, 00:10 UTC45m
2026-07-07 N611SJ - Jul 7, 17:25 UTCJul 7, 17:35 UTC10m
2026-07-07 N611SJ - Jul 7, 03:55 UTCJul 7, 04:35 UTC40m
2026-07-07 N611SJ - Jul 7, 02:45 UTCJul 7, 02:55 UTC10m
2026-07-06 N611SJ - Jul 6, 21:40 UTCJul 6, 21:55 UTC15m
2026-07-06 N611SJ - Jul 6, 19:00 UTCJul 6, 19:15 UTC15m
2026-07-06 N611SJ - Jul 6, 05:35 UTCJul 6, 06:15 UTC40m
2026-07-05 N611SJ - Jul 5, 22:00 UTCJul 5, 22:10 UTC10m
2026-07-05 N611SJ - Jul 5, 20:30 UTCJul 5, 21:10 UTC40m
2026-07-05 N611SJ - Jul 5, 16:00 UTCJul 5, 16:10 UTC10m
2026-07-05 N611SJ - Jul 5, 03:25 UTCJul 5, 03:35 UTC10m
2026-07-03 N611SJ - Jul 3, 00:15 UTCJul 3, 00:50 UTC35m
2026-07-02 N611SJ - Jul 2, 21:20 UTCJul 2, 21:30 UTC10m
2026-07-01 N611SJ - Jul 1, 22:55 UTCJul 1, 23:30 UTC35m
2026-06-28 N611SJ - Jun 28, 14:39 UTCJun 28, 17:10 UTC2h 30m
2026-06-28 N611SJ - Jun 28, 01:29 UTCJun 28, 02:05 UTC35m
2026-06-27 N611SJ - Jun 27, 11:30 UTCJun 27, 12:15 UTC45m
2026-06-26 N611SJ - Jun 26, 17:09 UTCJun 26, 17:25 UTC15m
2026-06-26 N611SJ - Jun 26, 16:14 UTCJun 26, 16:35 UTC20m
2026-06-26 N611SJ - Jun 26, 12:10 UTCJun 26, 13:34 UTC1h 25m
2026-06-26 N611SJ - Jun 26, 01:50 UTCJun 26, 02:00 UTC10m
2026-06-23 N611SJ - Jun 23, 20:15 UTCJun 23, 21:10 UTC55m
2026-06-17 N611SJ - Jun 17, 15:55 UTCJun 17, 16:05 UTC10m
2026-06-02 N611SJ - Jun 2, 16:30 UTCJun 2, 17:10 UTC40m

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 N611SJ page for operator, model, and routing details .

Mode-S A7F40E frequently asked

What is Mode-S code A7F40E?
A7F40E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N611SJ.
Where is Mode-S A7F40E registered?
Mode-S code A7F40E 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 A7F40E broadcasting right now?
No active broadcast right now. Last signal was 42m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7F40E, octal 51772016, decimal 11,006,990.
What flights does A7F40E operate?
Mode-S A7F40E has broadcast 1 distinct callsign, including N611SJ.