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sensors Mode-S transponder

A1709E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N192LL · AIRBUS HELICOPTERS EC-145 · operated by INDIANA UNIVERSITY HEALTH INC

Hex
A1709E
Octal
50270236
Decimal
10,580,126
Country
US
Tail
N192LL
Type
EC45
No current signal · last broadcast 18d ago
Flights observed
194
Distinct callsigns
1
Country
US
Last broadcast
18d ago

Last known position

Most recent position reported by Mode-S A1709E.

Country allocation

The ICAO 24-bit address A1709E 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
N192LL - 194 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N192LL - Jul 26, 20:55 UTCJul 26, 21:10 UTC15m
2026-07-26 N192LL - Jul 26, 01:55 UTCJul 26, 02:35 UTC40m
2026-07-26 N192LL - Jul 26, 01:15 UTCJul 26, 01:25 UTC10m
2026-07-25 N192LL - Jul 25, 20:05 UTCJul 25, 20:15 UTC10m
2026-07-25 N192LL - Jul 25, 14:35 UTCJul 25, 14:55 UTC20m
2026-07-25 N192LL - Jul 25, 07:15 UTCJul 25, 07:35 UTC20m
2026-07-25 N192LL - Jul 25, 06:15 UTCJul 25, 06:40 UTC25m
2026-07-25 N192LL - Jul 25, 02:45 UTCJul 25, 02:55 UTC10m
2026-07-25 N192LL - Jul 25, 00:25 UTCJul 25, 00:50 UTC25m
2026-07-24 N192LL - Jul 24, 20:30 UTCJul 24, 20:55 UTC25m
2026-07-24 N192LL - Jul 24, 18:25 UTCJul 24, 18:40 UTC15m
2026-07-24 N192LL - Jul 24, 02:40 UTCJul 24, 02:50 UTC10m
2026-07-24 N192LL - Jul 24, 01:35 UTCJul 24, 01:55 UTC20m
2026-07-23 N192LL - Jul 23, 07:45 UTCJul 23, 07:55 UTC10m
2026-07-23 N192LL - Jul 23, 06:00 UTCJul 23, 06:15 UTC15m
2026-07-22 N192LL - Jul 22, 22:45 UTCJul 22, 22:55 UTC10m
2026-07-22 N192LL - Jul 22, 21:00 UTCJul 22, 21:50 UTC50m
2026-07-22 N192LL - Jul 22, 19:05 UTCJul 22, 19:45 UTC40m
2026-07-22 N192LL - Jul 22, 04:40 UTCJul 22, 04:50 UTC10m
2026-07-22 N192LL - Jul 22, 00:10 UTCJul 22, 00:40 UTC30m
2026-07-21 N192LL - Jul 21, 00:00 UTCJul 21, 00:10 UTC10m
2026-07-20 N192LL - Jul 20, 18:05 UTCJul 20, 18:25 UTC20m
2026-07-20 N192LL - Jul 20, 16:55 UTCJul 20, 17:10 UTC15m
2026-07-19 N192LL - Jul 19, 21:35 UTCJul 19, 21:45 UTC10m
2026-07-19 N192LL - Jul 19, 19:50 UTCJul 19, 20:55 UTC1h 5m
2026-07-19 N192LL - Jul 19, 18:30 UTCJul 19, 18:50 UTC20m
2026-07-19 N192LL - Jul 19, 03:15 UTCJul 19, 03:50 UTC35m
2026-07-19 N192LL - Jul 19, 01:25 UTCJul 19, 02:30 UTC1h 5m
2026-07-17 N192LL - Jul 17, 23:14 UTCJul 17, 23:25 UTC10m
2026-07-17 N192LL - Jul 17, 21:34 UTCJul 17, 21:55 UTC20m
2026-07-14 N192LL - Jul 14, 21:25 UTCJul 14, 21:35 UTC10m
2026-07-14 N192LL - Jul 14, 17:05 UTCJul 14, 17:45 UTC40m
2026-07-14 N192LL - Jul 14, 07:10 UTCJul 14, 07:45 UTC35m
2026-07-14 N192LL - Jul 14, 05:20 UTCJul 14, 05:35 UTC15m
2026-07-14 N192LL - Jul 14, 03:45 UTCJul 14, 04:25 UTC40m
2026-07-14 N192LL - Jul 14, 00:20 UTCJul 14, 01:25 UTC1h 5m
2026-07-12 N192LL - Jul 12, 19:50 UTCJul 12, 20:15 UTC25m
2026-07-12 N192LL - Jul 12, 18:55 UTCJul 12, 19:05 UTC10m
2026-07-12 N192LL - Jul 12, 17:05 UTCJul 12, 17:25 UTC20m
2026-07-12 N192LL - Jul 12, 11:40 UTCJul 12, 11:55 UTC15m
2026-07-12 N192LL - Jul 12, 10:10 UTCJul 12, 10:20 UTC10m
2026-07-11 N192LL - Jul 11, 22:55 UTCJul 12, 00:05 UTC1h 10m
2026-07-11 N192LL - Jul 11, 21:45 UTCJul 11, 21:55 UTC10m
2026-07-11 N192LL - Jul 11, 09:10 UTCJul 11, 09:30 UTC20m
2026-07-10 N192LL - Jul 10, 22:50 UTCJul 10, 23:05 UTC15m
2026-07-10 N192LL - Jul 10, 21:20 UTCJul 10, 21:45 UTC25m
2026-07-10 N192LL - Jul 10, 20:20 UTCJul 10, 20:50 UTC30m
2026-07-10 N192LL - Jul 10, 05:55 UTCJul 10, 06:10 UTC15m
2026-07-10 N192LL - Jul 10, 04:05 UTCJul 10, 05:10 UTC1h 5m
2026-07-09 N192LL - Jul 9, 23:00 UTCJul 9, 23:50 UTC50m

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 N192LL page for operator, model, and routing details .

Mode-S A1709E frequently asked

What is Mode-S code A1709E?
A1709E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N192LL.
Where is Mode-S A1709E registered?
Mode-S code A1709E 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 A1709E broadcasting right now?
No active broadcast right now. Last signal was 18d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1709E, octal 50270236, decimal 10,580,126.
What flights does A1709E operate?
Mode-S A1709E has broadcast 1 distinct callsign, including N192LL.