Apparatus

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sensors Mode-S transponder

A93019

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N691TC · CESSNA 172 Skyhawk · operated by LOUISVILLE AVIATION LLC

Hex
A93019
Octal
52230031
Decimal
11,087,897
Country
US
Tail
N691TC
Type
C172
No current signal · last broadcast 5h ago
Flights observed
163
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A93019.

Country allocation

The ICAO 24-bit address A93019 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
N691TC - 163 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-06 N691TC - Jun 6, 02:10 UTCJun 6, 02:20 UTC10m
2026-06-06 N691TC - Jun 6, 00:05 UTCJun 6, 01:05 UTC1h 0m
2026-06-05 N691TC LOU → LOU Jun 5, 22:10 UTCJun 5, 23:15 UTC1h 5m
2026-06-05 N691TC - Jun 5, 19:15 UTCJun 5, 20:05 UTC50m
2026-06-05 N691TC LOU → LOU Jun 5, 15:15 UTCJun 5, 16:15 UTC1h 0m
2026-06-05 N691TC LOU → LOU Jun 5, 12:25 UTCJun 5, 13:45 UTC1h 20m
2026-06-04 N691TC LOU → LOU Jun 4, 23:40 UTCJun 5, 01:05 UTC1h 25m
2026-06-04 N691TC - Jun 4, 21:40 UTCJun 4, 22:45 UTC1h 5m
2026-06-04 N691TC - Jun 4, 19:25 UTCJun 4, 20:30 UTC1h 5m
2026-06-04 N691TC - Jun 4, 17:40 UTCJun 4, 18:45 UTC1h 5m
2026-06-04 N691TC - Jun 4, 13:15 UTCJun 4, 13:45 UTC30m
2026-06-03 N691TC LOU → LOU Jun 3, 23:50 UTCJun 4, 02:05 UTC2h 15m
2026-06-03 N691TC - Jun 3, 21:40 UTCJun 3, 22:50 UTC1h 10m
2026-06-03 N691TC - Jun 3, 19:50 UTCJun 3, 20:50 UTC1h 0m
2026-06-03 N691TC - Jun 3, 17:50 UTCJun 3, 19:00 UTC1h 10m
2026-06-03 N691TC - Jun 3, 16:40 UTCJun 3, 17:00 UTC20m
2026-06-03 N691TC - Jun 3, 15:45 UTCJun 3, 16:05 UTC20m
2026-06-03 N691TC LOU → LOU Jun 3, 12:35 UTCJun 3, 13:55 UTC1h 20m
2026-06-03 N691TC LOU → LOU Jun 3, 00:25 UTCJun 3, 01:05 UTC40m
2026-06-02 N691TC - Jun 2, 21:05 UTCJun 2, 22:05 UTC1h 0m
2026-06-02 N691TC - Jun 2, 17:20 UTCJun 2, 18:10 UTC50m
2026-06-02 N691TC - Jun 2, 15:20 UTCJun 2, 16:00 UTC40m
2026-06-02 N691TC - Jun 2, 13:15 UTCJun 2, 14:25 UTC1h 10m
2026-06-02 N691TC LOU → LOU Jun 2, 00:35 UTCJun 2, 00:50 UTC15m
2026-06-01 N691TC - Jun 1, 22:55 UTCJun 1, 23:55 UTC1h 0m
2026-06-01 N691TC LOU → LOU Jun 1, 19:25 UTCJun 1, 20:30 UTC1h 5m
2026-06-01 N691TC - Jun 1, 17:20 UTCJun 1, 18:45 UTC1h 25m
2026-06-01 N691TC - Jun 1, 14:35 UTCJun 1, 15:55 UTC1h 20m
2026-06-01 N691TC - Jun 1, 12:25 UTCJun 1, 13:30 UTC1h 5m
2026-05-31 N691TC LOU → LOU May 31, 22:00 UTCMay 31, 23:15 UTC1h 15m
2026-05-31 N691TC LOU → LOU May 31, 20:05 UTCMay 31, 20:45 UTC40m
2026-05-31 N691TC - May 31, 14:50 UTCMay 31, 15:55 UTC1h 5m
2026-05-30 N691TC LOU → LOU May 30, 17:20 UTCMay 30, 18:30 UTC1h 10m
2026-05-30 N691TC LOU → LOU May 30, 12:40 UTCMay 30, 13:40 UTC1h 0m
2026-05-29 N691TC - May 29, 19:40 UTCMay 29, 20:45 UTC1h 5m
2026-05-29 N691TC - May 29, 16:35 UTCMay 29, 17:55 UTC1h 20m
2026-05-29 N691TC - May 29, 15:00 UTCMay 29, 15:30 UTC30m
2026-05-29 N691TC LOU → LOU May 29, 12:35 UTCMay 29, 13:50 UTC1h 15m
2026-05-28 N691TC - May 28, 23:40 UTCMay 29, 00:35 UTC55m
2026-05-28 N691TC - May 28, 20:45 UTCMay 28, 21:55 UTC1h 10m
2026-05-28 N691TC LOU → LOU May 28, 18:20 UTCMay 28, 19:20 UTC1h 0m
2026-05-27 N691TC SDF → LOU May 27, 22:10 UTCMay 27, 23:20 UTC1h 10m
2026-05-19 N691TC LOU → LOU May 19, 13:35 UTCMay 19, 15:35 UTC2h 0m
2026-05-18 N691TC - May 18, 23:30 UTCMay 18, 23:50 UTC20m
2026-05-18 N691TC - May 18, 21:20 UTCMay 18, 22:25 UTC1h 5m
2026-05-18 N691TC - May 18, 17:05 UTCMay 18, 17:45 UTC40m
2026-05-18 N691TC - May 18, 14:45 UTCMay 18, 15:55 UTC1h 10m
2026-05-18 N691TC - May 18, 12:30 UTCMay 18, 13:30 UTC1h 0m
2026-05-18 N691TC - May 18, 00:45 UTCMay 18, 01:55 UTC1h 10m
2026-05-17 N691TC LOU → LOU May 17, 18:45 UTCMay 17, 19:01 UTC15m

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 N691TC page for operator, model, and routing details .

Mode-S A93019 frequently asked

What is Mode-S code A93019?
A93019 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N691TC.
Where is Mode-S A93019 registered?
Mode-S code A93019 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 A93019 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A93019, octal 52230031, decimal 11,087,897.
What flights does A93019 operate?
Mode-S A93019 has broadcast 1 distinct callsign, including N691TC.