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sensors Mode-S transponder

ADF195

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N998NP · operated by AVIATION TRUST COMPANY LLC TRUSTEE

Hex
ADF195
Octal
53370625
Decimal
11,399,573
Country
US
Tail
N998NP
Type
AS50
No current signal · last broadcast Jul 26, 20:40 UTC
Flights observed
178
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:40 UTC

Last known position

Most recent position reported by Mode-S ADF195.

Country allocation

The ICAO 24-bit address ADF195 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
N998NP - 178 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N998NP - Jul 26, 20:10 UTCJul 26, 20:40 UTC30m
2026-07-26 N998NP - Jul 26, 01:55 UTCJul 26, 02:15 UTC20m
2026-07-25 N998NP - Jul 25, 20:15 UTCJul 25, 21:15 UTC1h 0m
2026-07-25 N998NP OTZ → OTZ Jul 25, 15:45 UTCJul 25, 17:15 UTC1h 30m
2026-07-25 N998NP - Jul 25, 03:05 UTCJul 25, 03:45 UTC40m
2026-07-25 N998NP - Jul 25, 01:30 UTCJul 25, 01:50 UTC20m
2026-07-25 N998NP - Jul 25, 00:15 UTCJul 25, 00:55 UTC40m
2026-07-24 N998NP - Jul 24, 18:40 UTCJul 24, 18:50 UTC10m
2026-07-24 N998NP - Jul 24, 16:30 UTCJul 24, 17:55 UTC1h 25m
2026-07-24 N998NP - Jul 24, 15:35 UTCJul 24, 15:50 UTC15m
2026-07-24 N998NP - Jul 24, 00:15 UTCJul 24, 00:50 UTC35m
2026-07-23 N998NP - Jul 23, 23:00 UTCJul 23, 23:30 UTC30m
2026-07-23 N998NP - Jul 23, 21:00 UTCJul 23, 22:15 UTC1h 15m
2026-07-23 N998NP - Jul 23, 17:55 UTCJul 23, 20:15 UTC2h 20m
2026-07-23 N998NP - Jul 23, 15:50 UTCJul 23, 16:15 UTC25m
2026-07-23 N998NP - Jul 23, 01:45 UTCJul 23, 02:15 UTC30m
2026-07-22 N998NP - Jul 22, 22:10 UTCJul 23, 00:05 UTC1h 55m
2026-07-22 N998NP - Jul 22, 18:50 UTCJul 22, 19:20 UTC30m
2026-07-22 N998NP - Jul 22, 16:20 UTCJul 22, 17:10 UTC50m
2026-07-22 N998NP - Jul 22, 01:45 UTCJul 22, 04:05 UTC2h 20m
2026-07-21 N998NP - Jul 21, 22:10 UTCJul 21, 23:35 UTC1h 25m
2026-07-21 N998NP - Jul 21, 18:40 UTCJul 21, 21:30 UTC2h 50m
2026-07-21 N998NP - Jul 21, 16:20 UTCJul 21, 18:05 UTC1h 45m
2026-07-21 N998NP - Jul 21, 02:50 UTCJul 21, 04:00 UTC1h 10m
2026-07-20 N998NP - Jul 20, 22:35 UTCJul 21, 00:35 UTC1h 59m
2026-07-20 N998NP OTZ → OTZ Jul 20, 18:40 UTCJul 20, 21:50 UTC3h 10m
2026-07-20 N998NP OTZ → OTZ Jul 20, 00:40 UTCJul 20, 02:10 UTC1h 30m
2026-07-19 N998NP - Jul 19, 21:55 UTCJul 19, 23:30 UTC1h 35m
2026-07-19 N998NP OTZ → OTZ Jul 19, 18:10 UTCJul 19, 20:00 UTC1h 50m
2026-07-18 N998NP OTZ → OTZ Jul 18, 22:35 UTCJul 19, 03:05 UTC4h 30m
2026-07-18 N998NP OTZ → OTZ Jul 18, 20:15 UTCJul 18, 22:05 UTC1h 50m
2026-07-16 N998NP - Jul 16, 23:49 UTCJul 17, 02:15 UTC2h 25m
2026-07-16 N998NP - Jul 16, 03:00 UTCJul 16, 03:25 UTC25m
2026-07-16 N998NP - Jul 16, 00:45 UTCJul 16, 01:20 UTC35m
2026-07-14 N998NP OTZ → OTZ Jul 14, 21:50 UTCJul 15, 01:20 UTC3h 29m
2026-07-13 N998NP - Jul 13, 23:20 UTCJul 13, 23:45 UTC25m
2026-07-13 N998NP - Jul 13, 20:35 UTCJul 13, 20:55 UTC20m
2026-07-13 N998NP - Jul 13, 18:10 UTCJul 13, 18:25 UTC15m
2026-07-12 N998NP - Jul 12, 23:15 UTCJul 12, 23:35 UTC20m
2026-07-12 N998NP - Jul 12, 21:45 UTCJul 12, 22:25 UTC40m
2026-07-12 N998NP - Jul 12, 18:35 UTCJul 12, 18:55 UTC20m
2026-07-11 N998NP - Jul 11, 02:20 UTCJul 11, 03:35 UTC1h 15m
2026-07-10 N998NP OTZ → OTZ Jul 10, 22:45 UTCJul 11, 00:45 UTC2h 0m
2026-07-10 N998NP - Jul 10, 18:35 UTCJul 10, 20:00 UTC1h 25m
2026-07-10 N998NP - Jul 10, 06:00 UTCJul 10, 07:15 UTC1h 15m
2026-07-10 N998NP - Jul 10, 03:30 UTCJul 10, 04:55 UTC1h 25m
2026-07-09 N998NP - Jul 9, 19:45 UTCJul 10, 02:25 UTC6h 40m
2026-07-09 N998NP - Jul 9, 17:10 UTCJul 9, 17:25 UTC15m
2026-07-08 N998NP - Jul 8, 23:55 UTCJul 9, 00:45 UTC50m
2026-07-08 N998NP - Jul 8, 16:20 UTCJul 8, 21:30 UTC5h 10m

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 N998NP page for operator, model, and routing details .

Mode-S ADF195 frequently asked

What is Mode-S code ADF195?
ADF195 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N998NP.
Where is Mode-S ADF195 registered?
Mode-S code ADF195 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 ADF195 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADF195, octal 53370625, decimal 11,399,573.
What flights does ADF195 operate?
Mode-S ADF195 has broadcast 1 distinct callsign, including N998NP.