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sensors Mode-S transponder

A0A77B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N141MA · operated by VANS AIRCRAFT INC

Hex
A0A77B
Octal
50123573
Decimal
10,528,635
Country
US
Tail
N141MA
Type
RV12
No current signal · last broadcast 23h ago
Flights observed
141
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A0A77B.

Country allocation

The ICAO 24-bit address A0A77B 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
N141MA - 140 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N141MA LZU → LZU Jul 13, 12:40 UTCJul 13, 13:25 UTC45m
2026-07-12 N141MA - Jul 12, 19:20 UTCJul 12, 19:50 UTC30m
2026-07-12 N141MA - Jul 12, 17:30 UTCJul 12, 18:15 UTC45m
2026-07-11 N141MA LZU → LZU Jul 11, 13:20 UTCJul 11, 14:15 UTC55m
2026-07-10 N141MA - Jul 10, 17:30 UTCJul 10, 18:25 UTC55m
2026-06-26 N141MA - Jun 26, 21:24 UTCJun 26, 21:35 UTC10m
2026-06-26 N141MA - Jun 26, 19:55 UTCJun 26, 20:29 UTC35m
2026-06-25 N141MA - Jun 25, 21:55 UTCJun 25, 22:34 UTC40m
2026-06-25 N141MA - Jun 25, 21:05 UTCJun 25, 21:15 UTC10m
2026-06-25 N141MA - Jun 25, 17:39 UTCJun 25, 19:34 UTC1h 55m
2026-06-25 N141MA - Jun 25, 16:29 UTCJun 25, 16:45 UTC15m
2026-06-25 N141MA - Jun 25, 14:55 UTCJun 25, 15:10 UTC15m
2026-06-24 N141MA - Jun 24, 21:50 UTCJun 24, 22:00 UTC10m
2026-06-24 N141MA - Jun 24, 20:44 UTCJun 24, 21:00 UTC15m
2026-06-24 N141MA - Jun 24, 18:39 UTCJun 24, 19:20 UTC40m
2026-06-24 N141MA LZU → LZU Jun 24, 16:29 UTCJun 24, 16:59 UTC30m
2026-06-24 N141MA - Jun 24, 15:44 UTCJun 24, 15:59 UTC15m
2026-06-24 N141MA - Jun 24, 13:24 UTCJun 24, 14:55 UTC1h 30m
2026-06-24 N141MA LZU → LZU Jun 24, 12:40 UTCJun 24, 12:54 UTC15m
2026-06-23 - - Jun 23, 18:55 UTCJun 23, 19:04 UTC10m
2026-06-23 N141MA - Jun 23, 17:50 UTCJun 23, 18:25 UTC35m
2026-06-23 N141MA - Jun 23, 12:45 UTCJun 23, 13:29 UTC45m
2026-06-20 N141MA - Jun 20, 19:29 UTCJun 20, 20:14 UTC45m
2026-06-20 N141MA - Jun 20, 16:29 UTCJun 20, 16:55 UTC25m
2026-06-19 N141MA - Jun 19, 18:49 UTCJun 19, 19:19 UTC30m
2026-06-19 N141MA - Jun 19, 15:49 UTCJun 19, 16:19 UTC30m
2026-06-17 N141MA - Jun 17, 22:35 UTCJun 17, 22:50 UTC15m
2026-06-17 N141MA - Jun 17, 21:45 UTCJun 17, 22:00 UTC15m
2026-06-17 N141MA - Jun 17, 20:40 UTCJun 17, 21:10 UTC30m
2026-06-17 N141MA - Jun 17, 18:50 UTCJun 17, 19:35 UTC45m
2026-06-16 N141MA - Jun 16, 18:45 UTCJun 16, 19:05 UTC20m
2026-06-16 N141MA - Jun 16, 16:35 UTCJun 16, 16:55 UTC20m
2026-06-16 N141MA - Jun 16, 15:45 UTCJun 16, 15:55 UTC10m
2026-06-16 N141MA - Jun 16, 12:39 UTCJun 16, 14:00 UTC1h 20m
2026-06-16 N141MA ATL → LZU Jun 16, 02:54 UTCJun 16, 03:20 UTC25m
2026-06-16 N141MA - Jun 16, 01:10 UTCJun 16, 02:20 UTC1h 10m
2026-06-15 N141MA - Jun 15, 22:00 UTCJun 15, 22:30 UTC30m
2026-06-15 N141MA LZU → LZU Jun 15, 18:25 UTCJun 15, 19:00 UTC35m
2026-06-15 N141MA - Jun 15, 15:40 UTCJun 15, 16:40 UTC1h 0m
2026-06-15 N141MA - Jun 15, 12:35 UTCJun 15, 12:49 UTC15m
2026-06-13 N141MA - Jun 13, 20:10 UTCJun 13, 21:05 UTC55m
2026-06-13 N141MA - Jun 13, 17:50 UTCJun 13, 19:00 UTC1h 10m
2026-06-13 N141MA - Jun 13, 15:00 UTCJun 13, 16:30 UTC1h 30m
2026-06-12 N141MA - Jun 12, 19:55 UTCJun 12, 20:25 UTC30m
2026-06-12 N141MA - Jun 12, 15:35 UTCJun 12, 16:20 UTC45m
2026-06-11 N141MA - Jun 11, 21:50 UTCJun 11, 22:50 UTC1h 0m
2026-06-11 N141MA - Jun 11, 18:45 UTCJun 11, 19:15 UTC30m
2026-06-11 N141MA - Jun 11, 15:20 UTCJun 11, 15:50 UTC30m
2026-06-11 N141MA - Jun 11, 13:10 UTCJun 11, 13:25 UTC15m
2026-06-11 N141MA - Jun 11, 11:40 UTCJun 11, 12:20 UTC40m

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 N141MA page for operator, model, and routing details .

Mode-S A0A77B frequently asked

What is Mode-S code A0A77B?
A0A77B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N141MA.
Where is Mode-S A0A77B registered?
Mode-S code A0A77B 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 A0A77B broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0A77B, octal 50123573, decimal 10,528,635.
What flights does A0A77B operate?
Mode-S A0A77B has broadcast 1 distinct callsign, including N141MA.