Apparatus

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sensors Mode-S transponder

A4A1CC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N398PF · CESSNA 560XL Citation XLS · operated by PFD SUPPLY

Hex
A4A1CC
Octal
51120714
Decimal
10,789,324
Country
US
Tail
N398PF
Type
C56X
No current signal · last broadcast Jul 18, 02:29 UTC
Flights observed
78
Distinct callsigns
1
Country
US
Last broadcast
Jul 18, 02:29 UTC

Last known position

Most recent position reported by Mode-S A4A1CC.

Country allocation

The ICAO 24-bit address A4A1CC 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
N398PF - 78 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N398PF - Jul 18, 01:45 UTCJul 18, 02:29 UTC45m
2026-07-17 N398PF - Jul 17, 20:55 UTCJul 17, 21:44 UTC50m
2026-07-17 N398PF - Jul 17, 13:45 UTCJul 17, 14:24 UTC40m
2026-07-17 N398PF - Jul 17, 12:25 UTCJul 17, 13:10 UTC45m
2026-07-09 N398PF - Jul 9, 20:30 UTCJul 9, 21:35 UTC1h 5m
2026-07-09 N398PF - Jul 9, 15:10 UTCJul 9, 16:20 UTC1h 10m
2026-07-09 N398PF - Jul 9, 01:05 UTCJul 9, 01:30 UTC25m
2026-07-08 N398PF - Jul 8, 20:45 UTCJul 8, 21:05 UTC20m
2026-07-07 N398PF - Jul 7, 20:35 UTCJul 7, 21:15 UTC40m
2026-07-07 N398PF - Jul 7, 13:15 UTCJul 7, 14:00 UTC45m
2026-06-30 N398PF - Jun 30, 15:55 UTCJun 30, 16:30 UTC35m
2026-06-29 N398PF - Jun 29, 15:19 UTCJun 29, 16:00 UTC40m
2026-06-26 N398PF - Jun 26, 13:49 UTCJun 26, 15:39 UTC1h 50m
2026-06-25 N398PF - Jun 25, 17:20 UTCJun 25, 18:50 UTC1h 30m
2026-06-23 N398PF - Jun 23, 19:50 UTCJun 23, 20:34 UTC45m
2026-06-23 N398PF - Jun 23, 13:55 UTCJun 23, 14:39 UTC45m
2026-06-18 N398PF - Jun 18, 19:30 UTCJun 18, 20:40 UTC1h 10m
2026-06-18 N398PF - Jun 18, 13:40 UTCJun 18, 14:50 UTC1h 10m
2026-06-16 N398PF - Jun 16, 16:35 UTCJun 16, 17:30 UTC55m
2026-06-16 N398PF - Jun 16, 13:09 UTCJun 16, 14:00 UTC50m
2026-06-15 N398PF - Jun 15, 18:04 UTCJun 15, 18:40 UTC35m
2026-06-15 N398PF - Jun 15, 14:40 UTCJun 15, 15:19 UTC40m
2026-06-09 N398PF - Jun 9, 22:55 UTCJun 10, 00:35 UTC1h 40m
2026-06-09 N398PF - Jun 9, 12:30 UTCJun 9, 14:15 UTC1h 45m
2026-06-08 N398PF - Jun 8, 22:20 UTCJun 9, 00:10 UTC1h 50m
2026-06-08 N398PF - Jun 8, 16:20 UTCJun 8, 18:40 UTC2h 20m
2026-06-07 N398PF - Jun 7, 23:20 UTCJun 8, 01:00 UTC1h 40m
2026-06-07 N398PF - Jun 7, 20:55 UTCJun 7, 22:30 UTC1h 35m
2026-06-05 N398PF - Jun 5, 12:40 UTCJun 5, 13:55 UTC1h 15m
2026-06-04 N398PF - Jun 4, 15:10 UTCJun 4, 16:10 UTC1h 0m
2026-06-03 N398PF - Jun 3, 21:00 UTCJun 3, 21:45 UTC45m
2026-05-27 N398PF - May 27, 17:10 UTCMay 27, 17:35 UTC25m
2026-05-27 N398PF - May 27, 15:50 UTCMay 27, 16:40 UTC50m
2026-05-27 N398PF - May 27, 11:55 UTCMay 27, 12:35 UTC40m
2026-05-24 N398PF - May 24, 23:15 UTCMay 24, 23:46 UTC31m
2026-05-24 N398PF - May 24, 19:15 UTCMay 24, 21:45 UTC2h 30m
2026-05-24 N398PF - May 24, 16:30 UTCMay 24, 17:05 UTC35m
2026-05-23 N398PF - May 23, 22:10 UTCMay 23, 22:40 UTC30m
2026-05-23 N398PF - May 23, 20:50 UTCMay 23, 21:30 UTC40m
2026-05-23 N398PF - May 23, 17:35 UTCMay 23, 19:50 UTC2h 15m
2026-05-23 N398PF - May 23, 14:15 UTCMay 23, 16:25 UTC2h 10m
2026-05-21 N398PF - May 21, 14:50 UTCMay 21, 15:35 UTC45m
2026-05-21 N398PF - May 21, 13:35 UTCMay 21, 14:15 UTC40m
2026-05-20 N398PF - May 20, 18:00 UTCMay 20, 19:10 UTC1h 10m
2026-05-20 N398PF - May 20, 16:30 UTCMay 20, 17:40 UTC1h 10m
2026-05-19 N398PF - May 19, 14:10 UTCMay 19, 16:00 UTC1h 50m
2026-05-18 N398PF - May 18, 18:40 UTCMay 18, 19:55 UTC1h 15m
2026-05-18 N398PF - May 18, 17:00 UTCMay 18, 18:10 UTC1h 10m
2026-05-13 N398PF - May 13, 21:20 UTCMay 13, 22:40 UTC1h 20m
2026-05-13 N398PF - May 13, 16:50 UTCMay 13, 17:10 UTC20m

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 N398PF page for operator, model, and routing details .

Mode-S A4A1CC frequently asked

What is Mode-S code A4A1CC?
A4A1CC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N398PF.
Where is Mode-S A4A1CC registered?
Mode-S code A4A1CC 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 A4A1CC broadcasting right now?
No active broadcast right now. Last signal was Jul 18, 02:29 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4A1CC, octal 51120714, decimal 10,789,324.
What flights does A4A1CC operate?
Mode-S A4A1CC has broadcast 1 distinct callsign, including N398PF.