Apparatus

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sensors Mode-S transponder

A4F962

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N42BC · CESSNA 421 Executive Commuter · operated by ROTARY COMPONENTS INTERNATIONAL INC

Hex
A4F962
Octal
51174542
Decimal
10,811,746
Country
US
Tail
N42BC
Type
C421
No current signal · last broadcast Jul 22, 18:50 UTC
Flights observed
59
Distinct callsigns
1
Country
US
Last broadcast
Jul 22, 18:50 UTC

Last known position

Most recent position reported by Mode-S A4F962.

Country allocation

The ICAO 24-bit address A4F962 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
N42BC - 59 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 N42BC - Jul 22, 18:05 UTCJul 22, 18:50 UTC45m
2026-07-22 N42BC - Jul 22, 12:45 UTCJul 22, 14:00 UTC1h 15m
2026-07-18 N42BC - Jul 18, 15:35 UTCJul 18, 16:25 UTC50m
2026-07-18 N42BC - Jul 18, 13:30 UTCJul 18, 14:30 UTC1h 0m
2026-07-18 N42BC - Jul 18, 12:45 UTCJul 18, 12:55 UTC10m
2026-07-17 N42BC - Jul 17, 20:10 UTCJul 17, 20:29 UTC20m
2026-07-17 N42BC - Jul 17, 17:50 UTCJul 17, 18:19 UTC30m
2026-06-30 N42BC - Jun 30, 18:30 UTCJun 30, 20:50 UTC2h 20m
2026-06-30 N42BC - Jun 30, 00:14 UTCJun 30, 00:25 UTC10m
2026-06-29 N42BC - Jun 29, 22:00 UTCJun 29, 22:19 UTC20m
2026-06-29 N42BC - Jun 29, 19:44 UTCJun 29, 20:24 UTC40m
2026-06-29 N42BC - Jun 29, 18:10 UTCJun 29, 19:09 UTC1h 0m
2026-06-29 N42BC - Jun 29, 15:54 UTCJun 29, 17:05 UTC1h 10m
2026-06-29 N42BC - Jun 29, 13:49 UTCJun 29, 15:14 UTC1h 25m
2026-06-23 N42BC - Jun 23, 01:20 UTCJun 23, 01:35 UTC15m
2026-06-22 N42BC - Jun 22, 18:30 UTCJun 22, 21:25 UTC2h 55m
2026-06-22 N42BC - Jun 22, 15:20 UTCJun 22, 16:20 UTC1h 0m
2026-06-22 N42BC - Jun 22, 13:14 UTCJun 22, 14:40 UTC1h 25m
2026-06-20 N42BC - Jun 20, 00:14 UTCJun 20, 00:24 UTC10m
2026-06-18 N42BC - Jun 18, 19:05 UTCJun 18, 19:25 UTC20m
2026-06-12 N42BC - Jun 12, 18:40 UTCJun 12, 20:45 UTC2h 5m
2026-06-12 N42BC - Jun 12, 15:50 UTCJun 12, 17:50 UTC2h 0m
2026-06-10 N42BC - Jun 10, 00:45 UTCJun 10, 00:55 UTC10m
2026-06-09 N42BC - Jun 9, 22:40 UTCJun 9, 23:40 UTC1h 0m
2026-06-09 N42BC - Jun 9, 21:20 UTCJun 9, 22:05 UTC45m
2026-06-08 N42BC - Jun 8, 17:20 UTCJun 8, 18:20 UTC1h 0m
2026-06-08 N42BC - Jun 8, 15:45 UTCJun 8, 16:40 UTC55m
2026-06-08 N42BC - Jun 8, 13:05 UTCJun 8, 14:55 UTC1h 50m
2026-06-01 N42BC - Jun 1, 01:10 UTCJun 1, 02:50 UTC1h 40m
2026-05-31 N42BC - May 31, 20:30 UTCMay 31, 21:30 UTC1h 0m
2026-05-31 N42BC - May 31, 18:50 UTCMay 31, 19:50 UTC1h 0m
2026-05-30 N42BC - May 30, 01:00 UTCMay 30, 01:15 UTC15m
2026-05-29 N42BC - May 29, 23:00 UTCMay 29, 23:45 UTC45m
2026-05-29 N42BC - May 29, 21:20 UTCMay 29, 22:10 UTC50m
2026-05-29 N42BC - May 29, 17:45 UTCMay 29, 17:55 UTC10m
2026-05-29 N42BC - May 29, 17:00 UTCMay 29, 17:15 UTC15m
2026-05-29 N42BC - May 29, 15:40 UTCMay 29, 16:05 UTC25m
2026-05-29 N42BC - May 29, 13:55 UTCMay 29, 14:15 UTC20m
2026-05-24 N42BC - May 24, 23:00 UTCMay 24, 23:25 UTC25m
2026-05-24 N42BC - May 24, 18:05 UTCMay 24, 20:45 UTC2h 40m
2026-05-23 N42BC - May 23, 02:55 UTCMay 23, 06:10 UTC3h 15m
2026-05-22 N42BC - May 22, 19:45 UTCMay 22, 22:30 UTC2h 45m
2026-05-15 N42BC - May 15, 02:10 UTCMay 15, 02:35 UTC25m
2026-05-15 N42BC - May 15, 00:00 UTCMay 15, 00:20 UTC20m
2026-04-26 N42BC - Apr 26, 17:30 UTCApr 26, 19:25 UTC1h 55m
2026-04-26 N42BC - Apr 26, 16:20 UTCApr 26, 17:00 UTC40m
2026-04-26 N42BC - Apr 26, 12:25 UTCApr 26, 14:35 UTC2h 10m
2026-04-23 N42BC - Apr 23, 23:45 UTCApr 23, 23:55 UTC10m
2026-04-23 N42BC - Apr 23, 20:10 UTCApr 23, 21:55 UTC1h 45m
2026-04-23 N42BC - Apr 23, 14:50 UTCApr 23, 17:55 UTC3h 4m

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 N42BC page for operator, model, and routing details .

Mode-S A4F962 frequently asked

What is Mode-S code A4F962?
A4F962 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N42BC.
Where is Mode-S A4F962 registered?
Mode-S code A4F962 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 A4F962 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 18:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4F962, octal 51174542, decimal 10,811,746.
What flights does A4F962 operate?
Mode-S A4F962 has broadcast 1 distinct callsign, including N42BC.