sensors Mode-S transponder

A29991

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N267FX · EMBRAER EMB545 Praetor 500 · operated by FLEXJET LLC

Hex
A29991
Octal
50514621
Decimal
10,656,145
Country
US
Tail
N267FX
Type
E545
No current signal · last broadcast 16h ago
Flights observed
7
Distinct callsigns
1
Country
US
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S A29991.

Country allocation

The ICAO 24-bit address A29991 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
LXJ267 - 7 2026-04-14

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 LXJ267 - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 LXJ267 - Apr 14, 05:15 UTCApr 14, 07:10 UTC1h 55m
2026-04-13 LXJ267 - Apr 13, 20:00 UTCApr 13, 20:10 UTC10m
2026-04-13 LXJ267 - Apr 13, 16:20 UTCApr 13, 16:45 UTC25m
2026-04-13 LXJ267 - Apr 13, 15:50 UTCApr 13, 16:45 UTC55m
2026-04-13 LXJ267 - Apr 13, 13:25 UTCApr 13, 16:10 UTC2h 45m
2026-04-12 LXJ267 - Apr 12, 18:25 UTCApr 12, 20:15 UTC1h 50m

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 N267FX page for operator, model, and routing details .

Mode-S A29991 frequently asked

What is Mode-S code A29991?
A29991 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N267FX.
Where is Mode-S A29991 registered?
Mode-S code A29991 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 A29991 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29991, octal 50514621, decimal 10,656,145.
What flights does A29991 operate?
Mode-S A29991 has broadcast 1 distinct callsign, including LXJ267.