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sensors Mode-S transponder

ADA818

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N97947 · CESSNA 172 Skyhawk · operated by CIVIL AIR PATROL

Hex
ADA818
Octal
53324030
Decimal
11,380,760
Country
US
Tail
N97947
Type
C172
No current signal · last broadcast 10d ago
Flights observed
36
Distinct callsigns
1
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S ADA818.

Country allocation

The ICAO 24-bit address ADA818 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
CAP4047 - 36 2026-07-04

Recent flights last 36

DateFlightRouteTakeoffLandingDuration
2026-07-04 CAP4047 - Jul 4, 12:15 UTCJul 4, 12:40 UTC25m
2026-06-30 CAP4047 - Jun 30, 16:05 UTCJun 30, 16:25 UTC20m
2026-06-30 CAP4047 - Jun 30, 13:55 UTCJun 30, 14:20 UTC25m
2026-06-24 CAP4047 - Jun 24, 20:44 UTCJun 24, 21:04 UTC20m
2026-06-24 CAP4047 - Jun 24, 18:29 UTCJun 24, 18:50 UTC20m
2026-06-23 CAP4047 - Jun 23, 19:29 UTCJun 23, 19:50 UTC20m
2026-06-23 CAP4047 - Jun 23, 18:14 UTCJun 23, 18:29 UTC15m
2026-06-23 CAP4047 FET → FET Jun 23, 13:34 UTCJun 23, 13:50 UTC15m
2026-06-22 CAP4047 LNK → FET Jun 22, 20:49 UTCJun 22, 21:14 UTC25m
2026-06-22 CAP4047 - Jun 22, 19:54 UTCJun 22, 20:19 UTC25m
2026-06-22 CAP4047 - Jun 22, 18:15 UTCJun 22, 18:35 UTC20m
2026-06-22 CAP4047 FET → FET Jun 22, 16:14 UTCJun 22, 16:50 UTC35m
2026-06-22 CAP4047 - Jun 22, 14:59 UTCJun 22, 15:14 UTC15m
2026-06-20 CAP4047 - Jun 20, 17:24 UTCJun 20, 17:54 UTC30m
2026-06-20 CAP4047 - Jun 20, 13:39 UTCJun 20, 15:29 UTC1h 50m
2026-06-19 CAP4047 - Jun 19, 17:49 UTCJun 19, 18:59 UTC1h 10m
2026-06-19 CAP4047 - Jun 19, 15:39 UTCJun 19, 16:29 UTC50m
2026-06-19 CAP4047 - Jun 19, 13:44 UTCJun 19, 14:54 UTC1h 10m
2026-06-18 CAP4047 - Jun 18, 17:45 UTCJun 18, 17:55 UTC10m
2026-06-18 CAP4047 - Jun 18, 15:40 UTCJun 18, 15:50 UTC10m
2026-06-16 CAP4047 - Jun 16, 13:34 UTCJun 16, 13:44 UTC10m
2026-06-15 CAP4047 - Jun 15, 17:30 UTCJun 15, 18:15 UTC45m
2026-06-15 CAP4047 - Jun 15, 15:25 UTCJun 15, 16:04 UTC40m
2026-06-15 CAP4047 - Jun 15, 13:54 UTCJun 15, 14:45 UTC50m
2026-06-14 CAP4047 - Jun 14, 17:15 UTCJun 14, 18:00 UTC45m
2026-06-14 CAP4047 - Jun 14, 15:00 UTCJun 14, 15:40 UTC40m
2026-06-14 CAP4047 - Jun 14, 13:50 UTCJun 14, 14:20 UTC30m
2026-06-13 CAP4047 - Jun 13, 19:10 UTCJun 13, 19:40 UTC30m
2026-06-13 CAP4047 - Jun 13, 17:45 UTCJun 13, 18:15 UTC30m
2026-06-13 CAP4047 FET → FET Jun 13, 16:10 UTCJun 13, 16:45 UTC35m
2026-06-11 CAP4047 - Jun 11, 20:15 UTCJun 11, 21:15 UTC1h 0m
2026-06-11 CAP4047 - Jun 11, 19:15 UTCJun 11, 19:40 UTC25m
2026-05-28 CAP4047 - May 28, 16:40 UTCMay 28, 17:00 UTC20m
2026-05-28 CAP4047 - May 28, 15:05 UTCMay 28, 15:30 UTC25m
2026-04-15 CAP4047 - Apr 15, 17:40 UTCApr 15, 18:00 UTC20m
2026-04-15 CAP4047 - Apr 15, 13:01 UTCApr 15, 13:15 UTC15m

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 N97947 page for operator, model, and routing details .

Mode-S ADA818 frequently asked

What is Mode-S code ADA818?
ADA818 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N97947.
Where is Mode-S ADA818 registered?
Mode-S code ADA818 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 ADA818 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADA818, octal 53324030, decimal 11,380,760.
What flights does ADA818 operate?
Mode-S ADA818 has broadcast 1 distinct callsign, including CAP4047.