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sensors Mode-S transponder

AC5BA4

ICAO 24-bit transponder address · allocated to United States

Hex
AC5BA4
Octal
53055644
Decimal
11,295,652
Country
US
Broadcasting now · callsign N896AF · 2,500 ft
Flights observed
109
Distinct callsigns
2
Country
US
Last broadcast
18d ago

Current position

AC5BA4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC5BA4 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 2 distinct

Callsign Airline Flights Last seen
N896AF - 108 2026-07-26
CSTT709 - 1 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N896AF - Jul 26, 19:40 UTCJul 26, 21:40 UTC2h 0m
2026-07-26 N896AF HTV → CXO Jul 26, 17:50 UTCJul 26, 18:40 UTC50m
2026-07-26 N896AF - Jul 26, 16:30 UTCJul 26, 17:20 UTC50m
2026-07-26 N896AF - Jul 26, 00:35 UTCJul 26, 01:30 UTC55m
2026-07-25 N896AF - Jul 25, 23:30 UTCJul 25, 23:50 UTC20m
2026-07-25 N896AF - Jul 25, 18:10 UTCJul 25, 20:00 UTC1h 50m
2026-07-25 N896AF - Jul 25, 16:30 UTCJul 25, 16:50 UTC20m
2026-07-25 N896AF - Jul 25, 14:30 UTCJul 25, 14:50 UTC20m
2026-07-24 N896AF - Jul 24, 19:15 UTCJul 24, 20:15 UTC1h 0m
2026-07-24 N896AF - Jul 24, 15:55 UTCJul 24, 16:15 UTC20m
2026-07-24 N896AF - Jul 24, 00:00 UTCJul 24, 01:30 UTC1h 30m
2026-07-23 N896AF - Jul 23, 18:35 UTCJul 23, 20:55 UTC2h 20m
2026-07-22 N896AF - Jul 22, 21:50 UTCJul 22, 22:15 UTC25m
2026-07-22 N896AF CXO → CXO Jul 22, 19:00 UTCJul 22, 20:55 UTC1h 55m
2026-07-22 N896AF - Jul 22, 16:10 UTCJul 22, 17:40 UTC1h 30m
2026-07-22 N896AF - Jul 22, 13:05 UTCJul 22, 15:00 UTC1h 55m
2026-07-21 N896AF - Jul 21, 23:35 UTCJul 21, 23:50 UTC15m
2026-07-21 N896AF - Jul 21, 21:40 UTCJul 21, 21:55 UTC15m
2026-07-20 N896AF - Jul 20, 23:55 UTCJul 21, 01:35 UTC1h 40m
2026-07-20 N896AF - Jul 20, 21:25 UTCJul 20, 23:00 UTC1h 35m
2026-07-20 N896AF - Jul 20, 19:00 UTCJul 20, 19:15 UTC15m
2026-07-20 N896AF - Jul 20, 17:25 UTCJul 20, 18:00 UTC35m
2026-07-20 N896AF - Jul 20, 16:15 UTCJul 20, 16:40 UTC25m
2026-07-19 N896AF - Jul 19, 23:15 UTCJul 20, 00:05 UTC50m
2026-07-19 N896AF - Jul 19, 22:35 UTCJul 19, 23:10 UTC35m
2026-07-17 N896AF - Jul 17, 22:05 UTCJul 17, 22:55 UTC50m
2026-07-16 N896AF - Jul 16, 18:19 UTCJul 16, 20:05 UTC1h 45m
2026-07-16 N896AF - Jul 16, 17:35 UTCJul 16, 17:49 UTC15m
2026-07-16 N896AF - Jul 16, 02:00 UTCJul 16, 04:00 UTC2h 0m
2026-07-15 N896AF CXO → CXO Jul 15, 22:40 UTCJul 16, 00:50 UTC2h 10m
2026-07-13 N896AF - Jul 13, 14:30 UTCJul 13, 14:40 UTC10m
2026-07-12 N896AF - Jul 12, 20:40 UTCJul 12, 20:55 UTC15m
2026-07-12 N896AF - Jul 12, 18:45 UTCJul 12, 20:05 UTC1h 20m
2026-07-10 N896AF - Jul 10, 22:35 UTCJul 10, 22:50 UTC15m
2026-07-10 N896AF - Jul 10, 17:20 UTCJul 10, 17:40 UTC20m
2026-07-10 N896AF - Jul 10, 02:20 UTCJul 10, 02:55 UTC35m
2026-07-10 N896AF - Jul 10, 01:05 UTCJul 10, 01:45 UTC40m
2026-07-09 N896AF - Jul 9, 18:45 UTCJul 9, 19:10 UTC25m
2026-07-09 N896AF - Jul 9, 14:10 UTCJul 9, 14:20 UTC10m
2026-07-09 N896AF - Jul 9, 12:40 UTCJul 9, 13:25 UTC45m
2026-07-09 N896AF - Jul 9, 01:25 UTCJul 9, 01:35 UTC10m
2026-07-09 N896AF - Jul 9, 00:35 UTCJul 9, 00:50 UTC15m
2026-07-08 N896AF - Jul 8, 21:55 UTCJul 8, 22:20 UTC25m
2026-07-08 N896AF - Jul 8, 20:40 UTCJul 8, 21:05 UTC25m
2026-07-03 N896AF - Jul 3, 22:20 UTCJul 3, 23:00 UTC40m
2026-07-03 N896AF - Jul 3, 20:55 UTCJul 3, 21:40 UTC45m
2026-07-03 N896AF - Jul 3, 00:10 UTCJul 3, 02:05 UTC1h 55m
2026-07-02 N896AF - Jul 2, 18:25 UTCJul 2, 18:45 UTC20m
2026-07-02 N896AF - Jul 2, 17:20 UTCJul 2, 17:40 UTC20m
2026-07-02 N896AF - Jul 2, 13:05 UTCJul 2, 15:05 UTC2h 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.

Mode-S AC5BA4 frequently asked

What is Mode-S code AC5BA4?
AC5BA4 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S AC5BA4 registered?
Mode-S code AC5BA4 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 AC5BA4 broadcasting right now?
Yes. Mode-S AC5BA4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC5BA4, octal 53055644, decimal 11,295,652.
What flights does AC5BA4 operate?
Mode-S AC5BA4 has broadcast 2 distinct callsigns, including N896AF, CSTT709.