sensors Mode-S transponder

A7FE27

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N614FR · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A7FE27
Octal
51777047
Decimal
11,009,575
Country
US
Tail
N614FR
Type
A21N
No current signal · last broadcast 1d ago
Flights observed
7
Distinct callsigns
6
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A7FE27.

Country allocation

The ICAO 24-bit address A7FE27 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 6 distinct

Callsign Airline Flights Last seen
FFT1121 - 2 2026-04-13
FFT4967 Frontier Airlines 1 2026-04-13
FFT4401 - 1 2026-04-12
FFT4206 - 1 2026-04-13
FFT2576 - 1 2026-04-13
FFT2350 - 1 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-13 FFT4967 DEN → LAS Apr 13, 20:20 UTCApr 13, 21:55 UTC1h 35m
2026-04-13 FFT2350 LAS → DEN Apr 13, 13:20 UTCApr 13, 14:40 UTC1h 20m
2026-04-13 FFT4206 - Apr 13, 05:45 UTCApr 13, 06:25 UTC40m
2026-04-13 FFT1121 - Apr 13, 03:55 UTCApr 13, 04:20 UTC25m
2026-04-13 FFT1121 SLC → ONT Apr 13, 02:52 UTCApr 13, 04:14 UTC1h 22m
2026-04-13 FFT2576 LAS → SLC Apr 13, 00:30 UTCApr 13, 01:25 UTC55m
2026-04-12 FFT4401 LAS → SFO Apr 12, 18:40 UTCApr 12, 19:50 UTC1h 10m

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 N614FR page for operator, model, and routing details .

Mode-S A7FE27 frequently asked

What is Mode-S code A7FE27?
A7FE27 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N614FR.
Where is Mode-S A7FE27 registered?
Mode-S code A7FE27 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 A7FE27 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7FE27, octal 51777047, decimal 11,009,575.
What flights does A7FE27 operate?
Mode-S A7FE27 has broadcast 6 distinct callsigns, including FFT1121, FFT4967, FFT4401, FFT4206, FFT2576.