sensors Mode-S transponder

AAA74E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N786FA · operated by ALF IX LLC

Hex
AAA74E
Octal
52523516
Decimal
11,183,950
Country
US
Tail
N786FA
Type
C172
No current signal · last broadcast 23h ago
Flights observed
9
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S AAA74E.

Country allocation

The ICAO 24-bit address AAA74E 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
N786FA - 9 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 N786FA BFL → BFL Apr 14, 05:15 UTCApr 14, 05:55 UTC40m
2026-04-13 N786FA BFL → BFL Apr 13, 23:10 UTCApr 13, 23:45 UTC35m
2026-04-13 N786FA BFL → MIT Apr 13, 19:50 UTCApr 13, 20:10 UTC20m
2026-04-13 N786FA BFL → BFL Apr 13, 17:20 UTCApr 13, 18:15 UTC55m
2026-04-13 N786FA BFL → BFL Apr 13, 14:20 UTCApr 13, 15:20 UTC1h 0m
2026-04-13 N786FA - Apr 13, 04:20 UTCApr 13, 06:10 UTC1h 50m
2026-04-13 N786FA - Apr 13, 03:55 UTCApr 13, 06:10 UTC2h 15m
2026-04-13 N786FA - Apr 13, 03:25 UTCApr 13, 04:15 UTC50m
2026-04-12 N786FA BFL → BFL Apr 12, 17:50 UTCApr 12, 19:35 UTC1h 45m

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 N786FA page for operator, model, and routing details .

Mode-S AAA74E frequently asked

What is Mode-S code AAA74E?
AAA74E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N786FA.
Where is Mode-S AAA74E registered?
Mode-S code AAA74E 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 AAA74E broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAA74E, octal 52523516, decimal 11,183,950.
What flights does AAA74E operate?
Mode-S AAA74E has broadcast 1 distinct callsign, including N786FA.