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sensors Mode-S transponder

A70975

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N55218 · CESSNA 172 Skyhawk · operated by CHRISTIANSEN AVIATION LLC

Hex
A70975
Octal
51604565
Decimal
10,946,933
Country
US
Tail
N55218
Type
C172
No current signal · last broadcast 11h ago
Flights observed
72
Distinct callsigns
1
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A70975.

Country allocation

The ICAO 24-bit address A70975 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
N55218 - 72 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-20 N55218 - Jun 20, 16:59 UTCJun 20, 17:24 UTC25m
2026-06-20 N55218 - Jun 20, 15:49 UTCJun 20, 16:05 UTC15m
2026-06-20 N55218 - Jun 20, 13:19 UTCJun 20, 13:34 UTC15m
2026-06-20 N55218 - Jun 20, 11:30 UTCJun 20, 11:40 UTC10m
2026-06-20 N55218 - Jun 20, 00:39 UTCJun 20, 01:09 UTC30m
2026-06-17 N55218 - Jun 17, 00:35 UTCJun 17, 00:45 UTC10m
2026-06-16 N55218 - Jun 16, 22:00 UTCJun 16, 22:35 UTC35m
2026-06-16 N55218 - Jun 16, 20:05 UTCJun 16, 20:55 UTC50m
2026-06-16 N55218 - Jun 16, 18:45 UTCJun 16, 19:00 UTC15m
2026-06-16 N55218 - Jun 16, 17:49 UTCJun 16, 18:09 UTC20m
2026-06-16 N55218 - Jun 16, 16:10 UTCJun 16, 16:20 UTC10m
2026-06-16 N55218 - Jun 16, 14:15 UTCJun 16, 14:39 UTC25m
2026-06-16 N55218 - Jun 16, 00:24 UTCJun 16, 00:55 UTC30m
2026-06-15 N55218 - Jun 15, 22:59 UTCJun 15, 23:25 UTC25m
2026-06-15 N55218 - Jun 15, 21:50 UTCJun 15, 22:10 UTC20m
2026-06-11 N55218 - Jun 11, 13:55 UTCJun 11, 14:45 UTC50m
2026-06-10 N55218 - Jun 10, 17:40 UTCJun 10, 18:10 UTC30m
2026-06-10 N55218 - Jun 10, 03:05 UTCJun 10, 03:55 UTC50m
2026-06-09 N55218 - Jun 9, 23:50 UTCJun 10, 02:10 UTC2h 20m
2026-06-09 N55218 - Jun 9, 16:45 UTCJun 9, 18:30 UTC1h 45m
2026-06-09 N55218 - Jun 9, 13:55 UTCJun 9, 14:10 UTC15m
2026-06-08 N55218 - Jun 8, 20:20 UTCJun 8, 20:45 UTC25m
2026-06-04 N55218 - Jun 4, 19:50 UTCJun 4, 20:50 UTC1h 0m
2026-06-04 N55218 - Jun 4, 18:00 UTCJun 4, 18:30 UTC30m
2026-06-04 N55218 - Jun 4, 16:15 UTCJun 4, 16:50 UTC35m
2026-06-04 N55218 - Jun 4, 15:55 UTCJun 4, 16:10 UTC15m
2026-06-04 N55218 - Jun 4, 13:50 UTCJun 4, 14:10 UTC20m
2026-06-04 N55218 - Jun 4, 03:55 UTCJun 4, 06:20 UTC2h 25m
2026-06-03 N55218 - Jun 3, 20:15 UTCJun 3, 20:40 UTC25m
2026-06-03 N55218 - Jun 3, 15:55 UTCJun 3, 16:40 UTC45m
2026-06-03 N55218 - Jun 3, 14:00 UTCJun 3, 14:40 UTC40m
2026-06-02 N55218 - Jun 2, 17:50 UTCJun 2, 18:55 UTC1h 5m
2026-06-02 N55218 - Jun 2, 15:55 UTCJun 2, 16:45 UTC50m
2026-06-02 N55218 - Jun 2, 14:00 UTCJun 2, 15:00 UTC1h 0m
2026-06-01 N55218 - Jun 1, 18:20 UTCJun 1, 18:45 UTC25m
2026-06-01 N55218 - Jun 1, 15:45 UTCJun 1, 16:30 UTC45m
2026-05-31 N55218 - May 31, 16:50 UTCMay 31, 17:10 UTC20m
2026-05-27 N55218 - May 27, 13:45 UTCMay 27, 14:30 UTC45m
2026-05-26 N55218 - May 26, 18:24 UTCMay 26, 18:40 UTC15m
2026-05-26 N55218 - May 26, 16:10 UTCMay 26, 16:50 UTC40m
2026-05-26 N55218 - May 26, 13:54 UTCMay 26, 14:14 UTC20m
2026-05-26 N55218 - May 26, 02:15 UTCMay 26, 03:09 UTC55m
2026-05-25 N55218 - May 25, 19:40 UTCMay 25, 19:54 UTC15m
2026-05-25 N55218 - May 25, 16:00 UTCMay 25, 16:30 UTC30m
2026-05-25 N55218 - May 25, 02:10 UTCMay 25, 03:20 UTC1h 10m
2026-05-24 N55218 - May 24, 19:55 UTCMay 24, 20:30 UTC35m
2026-05-20 N55218 - May 20, 00:15 UTCMay 20, 01:45 UTC1h 30m
2026-05-19 N55218 - May 19, 16:20 UTCMay 19, 17:55 UTC1h 35m
2026-05-17 N55218 - May 17, 14:20 UTCMay 17, 15:05 UTC45m
2026-05-03 N55218 - May 3, 13:55 UTCMay 3, 14:05 UTC10m

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 N55218 page for operator, model, and routing details .

Mode-S A70975 frequently asked

What is Mode-S code A70975?
A70975 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N55218.
Where is Mode-S A70975 registered?
Mode-S code A70975 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 A70975 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A70975, octal 51604565, decimal 10,946,933.
What flights does A70975 operate?
Mode-S A70975 has broadcast 1 distinct callsign, including N55218.