sensors Mode-S transponder

A8E7DF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N673LH · operated by FF22 LLC

Hex
A8E7DF
Octal
52163737
Decimal
11,069,407
Country
US
Tail
N673LH
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
7
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A8E7DF.

Country allocation

The ICAO 24-bit address A8E7DF 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
LFA532 - 7 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-13 LFA532 - Apr 13, 19:50 UTCApr 13, 20:10 UTC20m
2026-04-13 LFA532 - Apr 13, 17:25 UTCApr 13, 18:35 UTC1h 10m
2026-04-13 LFA532 SFB → SFB Apr 13, 15:50 UTCApr 13, 16:10 UTC20m
2026-04-13 LFA532 - Apr 13, 14:25 UTCApr 13, 16:10 UTC1h 45m
2026-04-13 LFA532 - Apr 13, 12:20 UTCApr 13, 13:20 UTC1h 0m
2026-04-13 LFA532 - Apr 13, 11:45 UTCApr 13, 12:15 UTC30m
2026-04-12 LFA532 - Apr 12, 19:15 UTCApr 12, 20:15 UTC1h 0m

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 N673LH page for operator, model, and routing details .

Mode-S A8E7DF frequently asked

What is Mode-S code A8E7DF?
A8E7DF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N673LH.
Where is Mode-S A8E7DF registered?
Mode-S code A8E7DF 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 A8E7DF 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 A8E7DF, octal 52163737, decimal 11,069,407.
What flights does A8E7DF operate?
Mode-S A8E7DF has broadcast 1 distinct callsign, including LFA532.