sensors Mode-S transponder

E491A1

ICAO 24-bit transponder address · allocated to Brazil

Currently assigned to PT-XPC · AIRBUS A-321

Hex
E491A1
Octal
71110641
Decimal
14,979,489
Country
BR
Tail
PT-XPC
Type
A321
No current signal · last broadcast 14h ago
Flights observed
4
Distinct callsigns
4
Country
BR
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S E491A1.

Country allocation

The ICAO 24-bit address E491A1 falls within the block assigned to Brazil (BR) by ICAO Annex 10, Volume III. Every aircraft registered in Brazil 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 4 distinct

Callsign Airline Flights Last seen
LXP392 - 1 2026-04-13
LXP388 - 1 2026-04-14
LAN1856 LAN Airlines 1 2026-04-13
LAN011 - 1 2026-04-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-14 LXP388 - Apr 14, 10:15 UTCApr 14, 10:25 UTC10m
2026-04-13 LAN011 - Apr 13, 20:05 UTCApr 13, 22:25 UTC2h 20m
2026-04-13 LXP392 - Apr 13, 09:00 UTCApr 13, 09:10 UTC10m
2026-04-13 LAN1856 SCL → CJC Apr 13, 01:05 UTCApr 13, 01:15 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 PT-XPC page for operator, model, and routing details .

Mode-S E491A1 frequently asked

What is Mode-S code E491A1?
E491A1 is an ICAO 24-bit transponder address. Allocated to Brazil. Assigned to PT-XPC.
Where is Mode-S E491A1 registered?
Mode-S code E491A1 is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E491A1 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E491A1, octal 71110641, decimal 14,979,489.
What flights does E491A1 operate?
Mode-S E491A1 has broadcast 4 distinct callsigns, including LXP392, LXP388, LAN1856, LAN011.