Apparatus

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sensors Mode-S transponder

A4C48F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N406SV · ATR-42-500 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A4C48F
Octal
51142217
Decimal
10,798,223
Country
US
Tail
N406SV
Type
AT45
No current signal · last broadcast 23d ago
Flights observed
76
Distinct callsigns
9
Country
US
Last broadcast
23d ago

Last known position

Most recent position reported by Mode-S A4C48F.

Country allocation

The ICAO 24-bit address A4C48F 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 9 distinct

Callsign Airline Flights Last seen
SIL1401 Servicios Aeronauticos Integrales 15 2026-05-08
SIL1402 Servicios Aeronauticos Integrales 13 2026-05-08
SIL1404 Servicios Aeronauticos Integrales 12 2026-05-09
SIL1403 Servicios Aeronauticos Integrales 12 2026-05-09
SIL1210 Servicios Aeronauticos Integrales 9 2026-04-30
SIL1406 Servicios Aeronauticos Integrales 5 2026-05-07
SIL1405 Servicios Aeronauticos Integrales 5 2026-05-07
SIL9001 Servicios Aeronauticos Integrales 4 2026-05-09
1402 - 1 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-09 SIL9001 CDB → ANC May 9, 21:25 UTCMay 9, 22:25 UTC1h 0m
2026-05-09 SIL9001 CDB → ANC May 9, 16:50 UTCMay 9, 20:20 UTC3h 30m
2026-05-09 SIL9001 CDB → ANC May 9, 15:00 UTCMay 9, 16:10 UTC1h 10m
2026-05-09 SIL1404 HOM → ANC May 9, 02:15 UTCMay 9, 02:45 UTC30m
2026-05-09 SIL1403 ANC → HOM May 9, 01:00 UTCMay 9, 01:30 UTC30m
2026-05-08 SIL1402 HOM → ANC May 8, 17:20 UTCMay 8, 17:55 UTC35m
2026-05-08 SIL1401 ANC → HOM May 8, 15:45 UTCMay 8, 16:20 UTC35m
2026-05-08 SIL1404 HOM → ANC May 8, 01:55 UTCMay 8, 02:24 UTC30m
2026-05-08 SIL1403 ANC → HOM May 8, 00:49 UTCMay 8, 01:24 UTC35m
2026-05-07 SIL1406 HOM → ANC May 7, 21:35 UTCMay 7, 22:20 UTC45m
2026-05-07 SIL1405 ANC → HOM May 7, 20:30 UTCMay 7, 21:00 UTC30m
2026-05-07 SIL1402 HOM → ANC May 7, 16:40 UTCMay 7, 17:10 UTC30m
2026-05-07 SIL1401 ANC → HOM May 7, 15:30 UTCMay 7, 16:05 UTC35m
2026-05-07 SIL1404 HOM → ANC May 7, 01:45 UTCMay 7, 02:15 UTC30m
2026-05-07 SIL1403 ANC → HOM May 7, 00:45 UTCMay 7, 01:15 UTC30m
2026-05-06 SIL1406 HOM → ANC May 6, 21:25 UTCMay 6, 22:10 UTC45m
2026-05-06 SIL1405 ANC → HOM May 6, 20:20 UTCMay 6, 20:55 UTC35m
2026-05-06 SIL1402 HOM → ANC May 6, 16:45 UTCMay 6, 17:20 UTC35m
2026-05-06 SIL1401 ANC → HOM May 6, 15:45 UTCMay 6, 16:15 UTC30m
2026-05-06 SIL1404 HOM → ANC May 6, 02:15 UTCMay 6, 03:00 UTC45m
2026-05-06 SIL1403 ANC → HOM May 6, 01:15 UTCMay 6, 01:45 UTC30m
2026-05-05 SIL1406 HOM → ANC May 5, 21:35 UTCMay 5, 22:10 UTC35m
2026-05-05 SIL1405 ANC → HOM May 5, 20:25 UTCMay 5, 21:01 UTC35m
2026-05-05 SIL1402 HOM → ANC May 5, 16:55 UTCMay 5, 17:25 UTC30m
2026-05-05 SIL1401 ANC → HOM May 5, 15:30 UTCMay 5, 16:00 UTC30m
2026-05-05 SIL1404 HOM → ANC May 5, 01:55 UTCMay 5, 02:30 UTC35m
2026-05-05 SIL1403 ANC → HOM May 5, 00:50 UTCMay 5, 01:25 UTC35m
2026-05-04 SIL1406 HOM → ANC May 4, 21:50 UTCMay 4, 22:25 UTC35m
2026-05-04 SIL1405 ANC → HOM May 4, 20:35 UTCMay 4, 21:15 UTC40m
2026-05-04 SIL1402 HOM → ANC May 4, 16:45 UTCMay 4, 17:15 UTC30m
2026-05-04 SIL1401 ANC → HOM May 4, 15:20 UTCMay 4, 15:55 UTC35m
2026-05-02 SIL1404 HOM → ANC May 2, 02:05 UTCMay 2, 02:35 UTC30m
2026-05-02 SIL1403 ANC → HOM May 2, 00:45 UTCMay 2, 01:25 UTC40m
2026-05-01 SIL1406 HOM → ANC May 1, 22:00 UTCMay 1, 22:30 UTC30m
2026-05-01 SIL1405 ANC → HOM May 1, 20:35 UTCMay 1, 21:20 UTC45m
2026-05-01 SIL1402 HOM → ANC May 1, 16:50 UTCMay 1, 17:20 UTC30m
2026-05-01 SIL1401 ANC → HOM May 1, 15:30 UTCMay 1, 16:15 UTC45m
2026-05-01 SIL1404 HOM → ANC May 1, 01:25 UTCMay 1, 02:00 UTC35m
2026-05-01 SIL1403 ANC → HOM May 1, 00:05 UTCMay 1, 00:45 UTC40m
2026-04-30 SIL1402 HOM → ANC Apr 30, 18:00 UTCApr 30, 18:40 UTC39m
2026-04-30 SIL1401 ANC → HOM Apr 30, 16:50 UTCApr 30, 17:25 UTC35m
2026-04-30 SIL1404 HOM → ANC Apr 30, 03:40 UTCApr 30, 04:20 UTC40m
2026-04-30 SIL1403 ANC → HOM Apr 30, 02:35 UTCApr 30, 03:10 UTC35m
2026-04-30 SIL1210 ANC → SDP Apr 30, 00:25 UTCApr 30, 01:50 UTC1h 25m
2026-04-29 SIL1210 ANC → SDP Apr 29, 19:35 UTCApr 29, 21:20 UTC1h 45m
2026-04-29 1402 - Apr 29, 17:15 UTCApr 29, 17:55 UTC40m
2026-04-29 SIL1401 ANC → HOM Apr 29, 16:00 UTCApr 29, 16:35 UTC35m
2026-04-29 SIL1404 HOM → ANC Apr 29, 01:10 UTCApr 29, 01:45 UTC35m
2026-04-28 SIL1403 ANC → HOM Apr 28, 23:50 UTCApr 29, 00:25 UTC35m
2026-04-28 SIL1402 HOM → ANC Apr 28, 17:25 UTCApr 28, 18:00 UTC35m

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 N406SV page for operator, model, and routing details .

Mode-S A4C48F frequently asked

What is Mode-S code A4C48F?
A4C48F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N406SV.
Where is Mode-S A4C48F registered?
Mode-S code A4C48F 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 A4C48F broadcasting right now?
No active broadcast right now. Last signal was 23d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4C48F, octal 51142217, decimal 10,798,223.
What flights does A4C48F operate?
Mode-S A4C48F has broadcast 9 distinct callsigns, including SIL1401, SIL1402, SIL1404, SIL1403, SIL1210.