Apparatus

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sensors Mode-S transponder

A3CA22

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N343TF · operated by AIR FLEET HOLDINGS LLC

Hex
A3CA22
Octal
50745042
Decimal
10,734,114
Country
US
Tail
N343TF
Type
P28A
No current signal · last broadcast 10h ago
Flights observed
164
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A3CA22.

Country allocation

The ICAO 24-bit address A3CA22 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
TRF543 - 164 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 TRF543 - Jul 18, 23:50 UTCJul 19, 00:40 UTC50m
2026-07-18 TRF543 - Jul 18, 19:20 UTCJul 18, 21:30 UTC2h 10m
2026-07-18 TRF543 - Jul 18, 17:15 UTCJul 18, 18:35 UTC1h 20m
2026-07-18 TRF543 - Jul 18, 15:45 UTCJul 18, 16:40 UTC55m
2026-07-18 TRF543 - Jul 18, 13:15 UTCJul 18, 14:25 UTC1h 10m
2026-07-18 TRF543 - Jul 18, 11:45 UTCJul 18, 12:40 UTC55m
2026-07-18 TRF543 - Jul 18, 04:20 UTCJul 18, 05:05 UTC45m
2026-07-18 TRF543 - Jul 18, 02:19 UTCJul 18, 03:25 UTC1h 6m
2026-07-18 TRF543 - Jul 18, 00:15 UTCJul 18, 01:34 UTC1h 20m
2026-07-17 TRF543 - Jul 17, 22:20 UTCJul 17, 22:40 UTC20m
2026-07-17 TRF543 - Jul 17, 20:20 UTCJul 17, 21:25 UTC1h 5m
2026-07-16 TRF543 - Jul 16, 18:25 UTCJul 16, 19:20 UTC55m
2026-07-16 TRF543 - Jul 16, 15:25 UTCJul 16, 16:05 UTC40m
2026-07-16 TRF543 - Jul 16, 13:20 UTCJul 16, 14:35 UTC1h 15m
2026-07-16 TRF543 - Jul 16, 00:10 UTCJul 16, 01:45 UTC1h 35m
2026-07-15 TRF543 - Jul 15, 23:30 UTCJul 16, 00:00 UTC30m
2026-07-15 TRF543 - Jul 15, 18:40 UTCJul 15, 20:00 UTC1h 20m
2026-07-15 TRF543 - Jul 15, 17:45 UTCJul 15, 17:55 UTC10m
2026-07-15 TRF543 - Jul 15, 16:20 UTCJul 15, 17:15 UTC55m
2026-07-15 TRF543 - Jul 15, 12:25 UTCJul 15, 14:05 UTC1h 40m
2026-07-14 TRF543 - Jul 14, 23:35 UTCJul 15, 00:25 UTC50m
2026-07-14 TRF543 - Jul 14, 22:35 UTCJul 14, 22:55 UTC19m
2026-07-14 TRF543 PNX → PNX Jul 14, 18:25 UTCJul 14, 19:20 UTC55m
2026-07-13 TRF543 - Jul 13, 22:45 UTCJul 14, 00:15 UTC1h 30m
2026-07-12 TRF543 - Jul 12, 15:35 UTCJul 12, 16:45 UTC1h 10m
2026-07-11 TRF543 - Jul 11, 20:00 UTCJul 11, 21:10 UTC1h 10m
2026-07-10 TRF543 - Jul 10, 15:15 UTCJul 10, 15:50 UTC35m
2026-07-09 TRF543 - Jul 9, 15:10 UTCJul 9, 16:15 UTC1h 5m
2026-07-07 TRF543 ADS → PNX Jul 7, 20:55 UTCJul 7, 22:00 UTC1h 5m
2026-07-06 TRF543 - Jul 6, 11:50 UTCJul 6, 15:05 UTC3h 15m
2026-07-03 TRF543 - Jul 3, 14:45 UTCJul 3, 15:30 UTC45m
2026-07-03 TRF543 - Jul 3, 13:25 UTCJul 3, 14:10 UTC45m
2026-06-26 TRF543 CLL → ADS Jun 26, 11:30 UTCJun 26, 13:10 UTC1h 40m
2026-06-26 TRF543 - Jun 26, 09:14 UTCJun 26, 10:55 UTC1h 40m
2026-06-25 TRF543 - Jun 25, 23:59 UTCJun 26, 01:15 UTC1h 15m
2026-06-25 TRF543 - Jun 25, 21:05 UTCJun 25, 23:24 UTC2h 20m
2026-06-25 TRF543 - Jun 25, 17:09 UTCJun 25, 18:24 UTC1h 15m
2026-06-25 TRF543 - Jun 25, 14:34 UTCJun 25, 16:24 UTC1h 50m
2026-06-25 TRF543 ADS → ADS Jun 25, 11:35 UTCJun 25, 13:29 UTC1h 55m
2026-06-24 TRF543 ADS → ADS Jun 24, 23:29 UTCJun 25, 02:54 UTC3h 25m
2026-06-24 TRF543 TRL → ADS Jun 24, 21:14 UTCJun 24, 22:10 UTC55m
2026-06-24 TRF543 ADS → TRL Jun 24, 19:29 UTCJun 24, 20:54 UTC1h 25m
2026-06-24 TRF543 - Jun 24, 17:29 UTCJun 24, 18:44 UTC1h 15m
2026-06-24 TRF543 - Jun 24, 14:55 UTCJun 24, 16:24 UTC1h 30m
2026-06-24 TRF543 ADS → ADS Jun 24, 12:25 UTCJun 24, 14:04 UTC1h 40m
2026-06-23 TRF543 - Jun 23, 19:04 UTCJun 23, 20:19 UTC1h 15m
2026-06-23 TRF543 - Jun 23, 17:20 UTCJun 23, 18:10 UTC50m
2026-06-23 TRF543 - Jun 23, 12:15 UTCJun 23, 13:29 UTC1h 15m
2026-06-22 TRF543 - Jun 22, 23:10 UTCJun 23, 00:39 UTC1h 30m
2026-06-22 TRF543 ADS → ADS Jun 22, 20:34 UTCJun 22, 22:05 UTC1h 30m

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 N343TF page for operator, model, and routing details .

Mode-S A3CA22 frequently asked

What is Mode-S code A3CA22?
A3CA22 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N343TF.
Where is Mode-S A3CA22 registered?
Mode-S code A3CA22 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 A3CA22 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3CA22, octal 50745042, decimal 10,734,114.
What flights does A3CA22 operate?
Mode-S A3CA22 has broadcast 1 distinct callsign, including TRF543.