sensors Mode-S transponder

A5363E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N435FR · AIRBUS A-320neo · operated by FRONTIER AIRLINES INC.

Hex
A5363E
Octal
51233076
Decimal
10,827,326
Country
US
Tail
N435FR
Type
A20N
No current signal · last broadcast 19h ago
Flights observed
13
Distinct callsigns
9
Country
US
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S A5363E.

Country allocation

The ICAO 24-bit address A5363E 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 9 distinct

Callsign Airline Flights Last seen
FFT3363 - 3 2026-04-13
FFT2640 - 2 2026-04-13
FFT1953 Frontier Airlines 2 2026-04-14
FFT3819 - 1 2026-04-13
FFT2742 - 1 2026-04-12
FFT2593 Frontier Airlines 1 2026-04-13
FFT1785 - 1 2026-04-13
FFT1620 - 1 2026-04-13
FFT1418 - 1 2026-04-12

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 FFT1953 BQN → MCO Apr 14, 09:10 UTCApr 14, 09:45 UTC35m
2026-04-14 FFT1953 BQN → MCO Apr 14, 08:55 UTCApr 14, 09:05 UTC10m
2026-04-13 FFT3819 - Apr 13, 23:25 UTCApr 13, 23:40 UTC15m
2026-04-13 FFT1620 MCO → PIT Apr 13, 20:20 UTCApr 13, 22:10 UTC1h 50m
2026-04-13 FFT1785 - Apr 13, 17:06 UTCApr 13, 18:40 UTC1h 34m
2026-04-13 FFT2640 - Apr 13, 15:50 UTCApr 13, 16:00 UTC10m
2026-04-13 FFT2640 - Apr 13, 14:40 UTCApr 13, 16:00 UTC1h 20m
2026-04-13 FFT3363 - Apr 13, 12:20 UTCApr 13, 12:55 UTC35m
2026-04-13 FFT3363 - Apr 13, 11:55 UTCApr 13, 12:55 UTC1h 0m
2026-04-13 FFT3363 - Apr 13, 10:25 UTCApr 13, 12:15 UTC1h 50m
2026-04-13 FFT2593 TTN → MCO Apr 13, 01:50 UTCApr 13, 03:40 UTC1h 50m
2026-04-12 FFT2742 - Apr 12, 23:55 UTCApr 13, 00:25 UTC30m
2026-04-12 FFT1418 - Apr 12, 18:25 UTCApr 12, 20:15 UTC1h 50m

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 N435FR page for operator, model, and routing details .

Mode-S A5363E frequently asked

What is Mode-S code A5363E?
A5363E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N435FR.
Where is Mode-S A5363E registered?
Mode-S code A5363E 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 A5363E broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5363E, octal 51233076, decimal 10,827,326.
What flights does A5363E operate?
Mode-S A5363E has broadcast 9 distinct callsigns, including FFT3363, FFT2640, FFT1953, FFT3819, FFT2742.