sensors Mode-S transponder

A1FEEA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N228BZ · AIRBUS A220-300 · operated by BANK OF UTAH TRUSTEE

Hex
A1FEEA
Octal
50377352
Decimal
10,616,554
Country
US
Tail
N228BZ
Type
BCS3
Broadcasting now · callsign MXY607 · 36,000 ft
Flights observed
10
Distinct callsigns
5
Country
US
Last broadcast
23h ago

Current position

A1FEEA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1FEEA 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 5 distinct

Callsign Airline Flights Last seen
MXY267 - 3 2026-04-13
MXY266 - 3 2026-04-13
MXY854 - 2 2026-04-13
MXY855 - 1 2026-04-13
MXY809 Breeze Airways 1 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 MXY855 - Apr 13, 22:50 UTCApr 13, 23:40 UTC50m
2026-04-13 MXY854 - Apr 13, 20:05 UTCApr 13, 21:25 UTC1h 20m
2026-04-13 MXY854 - Apr 13, 17:30 UTCApr 13, 18:50 UTC1h 20m
2026-04-13 MXY267 - Apr 13, 15:50 UTCApr 13, 16:10 UTC20m
2026-04-13 MXY267 - Apr 13, 14:55 UTCApr 13, 16:10 UTC1h 15m
2026-04-13 MXY266 - Apr 13, 12:20 UTCApr 13, 13:35 UTC1h 15m
2026-04-13 MXY266 - Apr 13, 12:10 UTCApr 13, 12:15 UTC5m
2026-04-13 MXY809 LNS → MCO Apr 13, 01:05 UTCApr 13, 03:00 UTC1h 55m
2026-04-12 MXY267 - Apr 12, 19:00 UTCApr 12, 20:15 UTC1h 15m
2026-04-12 MXY266 - Apr 12, 17:15 UTCApr 12, 17:25 UTC10m

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 N228BZ page for operator, model, and routing details .

Mode-S A1FEEA frequently asked

What is Mode-S code A1FEEA?
A1FEEA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N228BZ.
Where is Mode-S A1FEEA registered?
Mode-S code A1FEEA 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 A1FEEA broadcasting right now?
Yes. Mode-S A1FEEA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1FEEA, octal 50377352, decimal 10,616,554.
What flights does A1FEEA operate?
Mode-S A1FEEA has broadcast 5 distinct callsigns, including MXY267, MXY266, MXY854, MXY855, MXY809.