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sensors Mode-S transponder

A04431

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N116TL · DE HAVILLAND DHC-3 Otter · operated by TORDRILLO MOUNTAIN AVIATION LLC

Hex
A04431
Octal
50042061
Decimal
10,503,217
Country
US
Tail
N116TL
Type
DHC3
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
230
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S A04431.

Country allocation

The ICAO 24-bit address A04431 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
N116TL - 230 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N116TL - Jul 26, 20:00 UTCJul 26, 21:50 UTC1h 50m
2026-07-26 N116TL - Jul 26, 14:50 UTCJul 26, 16:15 UTC1h 25m
2026-07-26 N116TL - Jul 26, 02:20 UTCJul 26, 02:50 UTC30m
2026-07-26 N116TL - Jul 26, 01:10 UTCJul 26, 01:35 UTC25m
2026-07-25 N116TL - Jul 25, 21:55 UTCJul 25, 22:05 UTC10m
2026-07-25 N116TL - Jul 25, 19:20 UTCJul 25, 20:30 UTC1h 10m
2026-07-25 N116TL - Jul 25, 18:05 UTCJul 25, 18:25 UTC20m
2026-07-25 N116TL - Jul 25, 16:55 UTCJul 25, 17:20 UTC25m
2026-07-25 N116TL - Jul 25, 15:35 UTCJul 25, 16:00 UTC25m
2026-07-24 N116TL - Jul 24, 20:35 UTCJul 24, 21:00 UTC25m
2026-07-24 N116TL - Jul 24, 17:15 UTCJul 24, 17:40 UTC25m
2026-07-24 N116TL - Jul 24, 16:35 UTCJul 24, 17:00 UTC25m
2026-07-24 N116TL - Jul 24, 01:30 UTCJul 24, 02:00 UTC30m
2026-07-24 N116TL - Jul 24, 00:05 UTCJul 24, 00:35 UTC30m
2026-07-23 N116TL - Jul 23, 23:10 UTCJul 23, 23:40 UTC30m
2026-07-23 N116TL - Jul 23, 20:20 UTCJul 23, 20:45 UTC25m
2026-07-22 N116TL - Jul 22, 23:15 UTCJul 22, 23:40 UTC25m
2026-07-21 N116TL - Jul 21, 03:15 UTCJul 21, 03:40 UTC25m
2026-07-20 N116TL - Jul 20, 22:15 UTCJul 21, 00:30 UTC2h 14m
2026-07-20 N116TL - Jul 20, 21:20 UTCJul 20, 21:35 UTC15m
2026-07-20 N116TL - Jul 20, 01:20 UTCJul 20, 01:40 UTC20m
2026-07-20 N116TL - Jul 20, 00:15 UTCJul 20, 00:40 UTC25m
2026-07-19 N116TL - Jul 19, 03:15 UTCJul 19, 03:40 UTC25m
2026-07-19 N116TL - Jul 19, 01:15 UTCJul 19, 02:25 UTC1h 10m
2026-07-19 N116TL - Jul 19, 00:05 UTCJul 19, 00:30 UTC25m
2026-07-18 N116TL - Jul 18, 22:55 UTCJul 18, 23:20 UTC25m
2026-07-18 N116TL - Jul 18, 21:50 UTCJul 18, 22:15 UTC25m
2026-07-18 N116TL - Jul 18, 20:50 UTCJul 18, 21:15 UTC25m
2026-07-18 N116TL - Jul 18, 19:40 UTCJul 18, 20:05 UTC25m
2026-07-18 N116TL - Jul 18, 02:40 UTCJul 18, 03:00 UTC21m
2026-07-17 N116TL - Jul 17, 23:35 UTCJul 18, 01:00 UTC1h 25m
2026-07-17 N116TL - Jul 17, 22:05 UTCJul 17, 22:25 UTC20m
2026-07-17 N116TL - Jul 17, 20:44 UTCJul 17, 21:00 UTC15m
2026-07-17 N116TL - Jul 17, 18:19 UTCJul 17, 19:25 UTC1h 5m
2026-07-16 N116TL - Jul 16, 22:25 UTCJul 16, 22:45 UTC20m
2026-07-16 N116TL - Jul 16, 21:15 UTCJul 16, 21:40 UTC25m
2026-07-16 N116TL - Jul 16, 00:00 UTCJul 16, 00:30 UTC30m
2026-07-15 N116TL - Jul 15, 22:30 UTCJul 15, 22:50 UTC20m
2026-07-15 N116TL - Jul 15, 02:00 UTCJul 15, 02:25 UTC25m
2026-07-15 N116TL - Jul 15, 00:25 UTCJul 15, 00:55 UTC30m
2026-07-14 N116TL - Jul 14, 01:35 UTCJul 14, 02:00 UTC25m
2026-07-14 N116TL - Jul 14, 00:25 UTCJul 14, 00:50 UTC25m
2026-07-13 N116TL - Jul 13, 23:10 UTCJul 13, 23:35 UTC25m
2026-07-13 N116TL - Jul 13, 22:00 UTCJul 13, 22:30 UTC30m
2026-07-13 N116TL - Jul 13, 20:35 UTCJul 13, 21:00 UTC25m
2026-07-13 N116TL - Jul 13, 18:20 UTCJul 13, 19:35 UTC1h 15m
2026-07-13 N116TL - Jul 13, 17:20 UTCJul 13, 17:40 UTC20m
2026-07-13 N116TL - Jul 13, 01:25 UTCJul 13, 01:50 UTC25m
2026-07-12 N116TL - Jul 12, 22:25 UTCJul 12, 23:05 UTC40m
2026-07-12 N116TL - Jul 12, 20:40 UTCJul 12, 21:05 UTC25m

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 N116TL page for operator, model, and routing details .

Mode-S A04431 frequently asked

What is Mode-S code A04431?
A04431 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N116TL.
Where is Mode-S A04431 registered?
Mode-S code A04431 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 A04431 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A04431, octal 50042061, decimal 10,503,217.
What flights does A04431 operate?
Mode-S A04431 has broadcast 1 distinct callsign, including N116TL.