sensors Mode-S transponder

A8E76A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N763FR · AIRBUS A-321neo · operated by FRONTIER AIRLINES INC.

Hex
A8E76A
Octal
52163552
Decimal
11,069,290
Country
US
Tail
N763FR
Type
A21N
Broadcasting now · callsign FFT2170 · 27,775 ft
Flights observed
7
Distinct callsigns
7
Country
US
Last broadcast
21h ago

Current position

A8E76A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8E76A 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 7 distinct

Callsign Airline Flights Last seen
FFT4353 - 1 2026-04-13
FFT4169 - 1 2026-04-14
FFT2111 - 1 2026-04-13
FFT1384 - 1 2026-04-13
FFT1383 - 1 2026-04-12
FFT1102 Frontier Airlines 1 2026-04-13
FFT1003 - 1 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 FFT4169 - Apr 14, 05:32 UTCApr 14, 07:16 UTC1h 44m
2026-04-13 FFT2111 - Apr 13, 22:15 UTCApr 13, 23:40 UTC1h 25m
2026-04-13 FFT1384 - Apr 13, 17:00 UTCApr 13, 18:25 UTC1h 25m
2026-04-13 FFT4353 - Apr 13, 14:25 UTCApr 13, 15:40 UTC1h 15m
2026-04-13 FFT1102 ATL → PHL Apr 13, 04:35 UTCApr 13, 06:05 UTC1h 30m
2026-04-13 FFT1003 - Apr 13, 01:05 UTCApr 13, 02:35 UTC1h 30m
2026-04-12 FFT1383 - Apr 12, 17:35 UTCApr 12, 18:55 UTC1h 20m

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 N763FR page for operator, model, and routing details .

Mode-S A8E76A frequently asked

What is Mode-S code A8E76A?
A8E76A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N763FR.
Where is Mode-S A8E76A registered?
Mode-S code A8E76A 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 A8E76A broadcasting right now?
Yes. Mode-S A8E76A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8E76A, octal 52163552, decimal 11,069,290.
What flights does A8E76A operate?
Mode-S A8E76A has broadcast 7 distinct callsigns, including FFT4353, FFT4169, FFT2111, FFT1384, FFT1383.