sensors Mode-S transponder

AC53BE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N89362 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AC53BE
Octal
53051676
Decimal
11,293,630
Country
US
Tail
N89362
Type
E75L
Transponder active on ground
Flights observed
8
Distinct callsigns
6
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S AC53BE.

Country allocation

The ICAO 24-bit address AC53BE 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 6 distinct

Callsign Airline Flights Last seen
SKW5765 - 2 2026-04-13
SKW5619 SkyWest Airlines 2 2026-04-13
SKW6037 - 1 2026-04-13
SKW5942 - 1 2026-04-13
SKW5328 - 1 2026-04-12
SKW4726 - 1 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 SKW4726 - Apr 13, 22:05 UTCApr 13, 23:45 UTC1h 40m
2026-04-13 SKW5765 - Apr 13, 19:50 UTCApr 13, 20:40 UTC50m
2026-04-13 SKW5765 - Apr 13, 19:00 UTCApr 13, 20:10 UTC1h 10m
2026-04-13 SKW5942 RDD → LAX Apr 13, 16:40 UTCApr 13, 18:00 UTC1h 20m
2026-04-13 SKW6037 - Apr 13, 02:20 UTCApr 13, 03:40 UTC1h 20m
2026-04-13 SKW5619 SFO → RDD Apr 13, 00:20 UTCApr 13, 01:05 UTC45m
2026-04-12 SKW5619 SFO → RDD Apr 12, 23:55 UTCApr 13, 01:05 UTC1h 10m
2026-04-12 SKW5328 - Apr 12, 17:35 UTCApr 12, 18:45 UTC1h 10m

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 N89362 page for operator, model, and routing details .

Mode-S AC53BE frequently asked

What is Mode-S code AC53BE?
AC53BE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N89362.
Where is Mode-S AC53BE registered?
Mode-S code AC53BE 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 AC53BE broadcasting right now?
Mode-S AC53BE is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC53BE, octal 53051676, decimal 11,293,630.
What flights does AC53BE operate?
Mode-S AC53BE has broadcast 6 distinct callsigns, including SKW5765, SKW5619, SKW6037, SKW5942, SKW5328.