Apparatus

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sensors Mode-S transponder

A4BC0A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N404FR · CESSNA 172R Cutlass RG · operated by EDB AIR INC

Hex
A4BC0A
Octal
51136012
Decimal
10,796,042
Country
US
Tail
N404FR
Type
C72R
Broadcasting now · callsign N404FR · 5,600 ft
Flights observed
109
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Current position

A4BC0A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A4BC0A 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
N404FR - 109 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N404FR - Jul 14, 14:25 UTCJul 14, 14:45 UTC20m
2026-07-14 N404FR - Jul 14, 12:55 UTCJul 14, 13:15 UTC20m
2026-07-13 N404FR APA → APA Jul 13, 15:50 UTCJul 13, 17:10 UTC1h 20m
2026-07-13 N404FR - Jul 13, 13:05 UTCJul 13, 15:00 UTC1h 55m
2026-07-12 N404FR - Jul 12, 17:40 UTCJul 12, 18:40 UTC1h 0m
2026-07-12 N404FR - Jul 12, 15:45 UTCJul 12, 16:45 UTC1h 0m
2026-07-12 N404FR - Jul 12, 14:10 UTCJul 12, 15:01 UTC50m
2026-07-12 N404FR - Jul 12, 12:45 UTCJul 12, 13:35 UTC50m
2026-07-12 N404FR - Jul 12, 00:10 UTCJul 12, 02:30 UTC2h 20m
2026-07-11 N404FR - Jul 11, 17:20 UTCJul 11, 18:35 UTC1h 15m
2026-07-11 N404FR APA → APA Jul 11, 13:20 UTCJul 11, 15:10 UTC1h 50m
2026-07-10 N404FR - Jul 10, 20:05 UTCJul 10, 20:55 UTC50m
2026-07-10 N404FR - Jul 10, 16:55 UTCJul 10, 17:40 UTC45m
2026-07-10 N404FR - Jul 10, 14:40 UTCJul 10, 15:40 UTC1h 0m
2026-07-10 N404FR - Jul 10, 12:35 UTCJul 10, 13:40 UTC1h 5m
2026-07-09 N404FR - Jul 9, 19:40 UTCJul 9, 20:05 UTC25m
2026-07-09 N404FR APA → APA Jul 9, 17:45 UTCJul 9, 18:35 UTC50m
2026-07-09 N404FR - Jul 9, 12:40 UTCJul 9, 13:40 UTC1h 0m
2026-07-08 N404FR - Jul 8, 16:05 UTCJul 8, 16:40 UTC35m
2026-07-08 N404FR - Jul 8, 13:00 UTCJul 8, 14:20 UTC1h 20m
2026-07-08 N404FR - Jul 8, 11:45 UTCJul 8, 11:55 UTC10m
2026-07-07 N404FR - Jul 7, 17:05 UTCJul 7, 17:40 UTC35m
2026-07-07 N404FR - Jul 7, 12:45 UTCJul 7, 15:20 UTC2h 35m
2026-07-06 N404FR - Jul 6, 17:20 UTCJul 6, 19:10 UTC1h 50m
2026-07-04 N404FR - Jul 4, 15:20 UTCJul 4, 15:50 UTC30m
2026-07-04 N404FR - Jul 4, 12:35 UTCJul 4, 14:40 UTC2h 5m
2026-07-03 N404FR APA → APA Jul 3, 17:40 UTCJul 3, 19:45 UTC2h 5m
2026-07-03 N404FR - Jul 3, 14:50 UTCJul 3, 15:45 UTC55m
2026-07-02 N404FR - Jul 2, 19:40 UTCJul 2, 19:50 UTC10m
2026-07-02 N404FR APA → APA Jul 2, 18:15 UTCJul 2, 18:50 UTC35m
2026-07-02 N404FR - Jul 2, 13:25 UTCJul 2, 14:15 UTC50m
2026-07-01 N404FR - Jul 1, 22:35 UTCJul 1, 23:25 UTC50m
2026-07-01 N404FR - Jul 1, 18:00 UTCJul 1, 18:35 UTC35m
2026-07-01 N404FR - Jul 1, 14:40 UTCJul 1, 15:40 UTC1h 0m
2026-07-01 N404FR - Jul 1, 12:35 UTCJul 1, 13:15 UTC40m
2026-06-30 N404FR APA → APA Jun 30, 12:40 UTCJun 30, 13:55 UTC1h 15m
2026-06-29 N404FR - Jun 29, 17:34 UTCJun 29, 18:34 UTC1h 0m
2026-06-29 N404FR - Jun 29, 15:30 UTCJun 29, 16:44 UTC1h 15m
2026-06-29 N404FR - Jun 29, 13:09 UTCJun 29, 13:54 UTC45m
2026-06-28 N404FR APA → APA Jun 28, 14:45 UTCJun 28, 15:29 UTC45m
2026-06-28 N404FR - Jun 28, 12:55 UTCJun 28, 13:25 UTC30m
2026-06-27 N404FR APA → APA Jun 27, 12:45 UTCJun 27, 13:35 UTC50m
2026-06-26 N404FR - Jun 26, 18:15 UTCJun 26, 19:00 UTC45m
2026-06-26 N404FR - Jun 26, 15:39 UTCJun 26, 16:35 UTC55m
2026-06-26 N404FR - Jun 26, 13:24 UTCJun 26, 13:55 UTC30m
2026-06-25 N404FR - Jun 25, 23:49 UTCJun 26, 01:29 UTC1h 40m
2026-06-24 N404FR APA → APA Jun 24, 17:45 UTCJun 24, 18:50 UTC1h 5m
2026-06-24 N404FR - Jun 24, 15:39 UTCJun 24, 16:34 UTC55m
2026-06-23 N404FR - Jun 23, 21:54 UTCJun 23, 23:00 UTC1h 5m
2026-06-23 N404FR - Jun 23, 12:25 UTCJun 23, 14:19 UTC1h 55m

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 N404FR page for operator, model, and routing details .

Mode-S A4BC0A frequently asked

What is Mode-S code A4BC0A?
A4BC0A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N404FR.
Where is Mode-S A4BC0A registered?
Mode-S code A4BC0A 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 A4BC0A broadcasting right now?
Yes. Mode-S A4BC0A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4BC0A, octal 51136012, decimal 10,796,042.
What flights does A4BC0A operate?
Mode-S A4BC0A has broadcast 1 distinct callsign, including N404FR.