Apparatus

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sensors Mode-S transponder

A50DE8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N42477 · PIPER PA-28-140/150/160/180 · operated by HOLSHOUSER JEFFREY

Hex
A50DE8
Octal
51206750
Decimal
10,817,000
Country
US
Tail
N42477
Type
P28A
No current signal · last broadcast 5d ago
Flights observed
82
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A50DE8.

Country allocation

The ICAO 24-bit address A50DE8 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
N42477 - 82 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 N42477 RAL → RAL Jul 8, 16:05 UTCJul 8, 17:35 UTC1h 30m
2026-07-03 N42477 RAL → RAL Jul 3, 17:15 UTCJul 3, 18:20 UTC1h 5m
2026-07-02 N42477 RAL → RAL Jul 2, 19:30 UTCJul 2, 20:50 UTC1h 20m
2026-07-01 N42477 RAL → RAL Jul 1, 18:00 UTCJul 1, 18:40 UTC40m
2026-06-28 N42477 SBP → RAL Jun 28, 01:40 UTCJun 28, 03:14 UTC1h 35m
2026-06-27 N42477 - Jun 27, 17:34 UTCJun 27, 19:29 UTC1h 55m
2026-06-26 N42477 RAL → RAL Jun 26, 17:00 UTCJun 26, 17:19 UTC20m
2026-06-22 N42477 RAL → RAL Jun 22, 19:19 UTCJun 22, 22:10 UTC2h 50m
2026-06-21 N42477 RAL → RAL Jun 21, 02:15 UTCJun 21, 03:25 UTC1h 10m
2026-06-20 N42477 RAL → RAL Jun 20, 02:04 UTCJun 20, 02:35 UTC30m
2026-06-17 N42477 RAL → RAL Jun 17, 15:46 UTCJun 17, 16:55 UTC1h 10m
2026-06-11 N42477 RAL → RAL Jun 11, 02:20 UTCJun 11, 03:55 UTC1h 35m
2026-06-10 N42477 RAL → RAL Jun 10, 21:15 UTCJun 10, 21:45 UTC30m
2026-06-08 N42477 - Jun 8, 05:50 UTCJun 8, 06:35 UTC45m
2026-06-08 N42477 - Jun 8, 05:00 UTCJun 8, 05:45 UTC45m
2026-06-07 N42477 RAL → RAL Jun 7, 05:00 UTCJun 7, 06:10 UTC1h 10m
2026-06-06 N42477 RAL → RAL Jun 6, 08:20 UTCJun 6, 08:35 UTC15m
2026-06-04 N42477 - Jun 4, 16:10 UTCJun 4, 17:10 UTC1h 0m
2026-06-04 N42477 RAL → RAL Jun 4, 15:55 UTCJun 4, 16:00 UTC5m
2026-06-03 N42477 RAL → RAL Jun 3, 19:00 UTCJun 3, 20:20 UTC1h 20m
2026-06-01 N42477 RAL → RAL Jun 1, 20:10 UTCJun 1, 21:00 UTC50m
2026-06-01 N42477 - Jun 1, 17:00 UTCJun 1, 18:30 UTC1h 30m
2026-06-01 N42477 RAL → RAL Jun 1, 16:15 UTCJun 1, 16:20 UTC5m
2026-05-31 N42477 - May 31, 00:15 UTCMay 31, 01:11 UTC56m
2026-05-30 N42477 RAL → WHP May 30, 23:05 UTCMay 30, 23:45 UTC40m
2026-05-30 N42477 - May 30, 19:05 UTCMay 30, 20:35 UTC1h 30m
2026-05-30 N42477 RAL → HII May 30, 16:55 UTCMay 30, 18:35 UTC1h 40m
2026-05-29 N42477 - May 29, 22:20 UTCMay 30, 00:00 UTC1h 40m
2026-05-29 N42477 AVX → RAL May 29, 21:05 UTCMay 29, 21:40 UTC35m
2026-05-28 N42477 RAL → AVX May 28, 20:55 UTCMay 28, 21:35 UTC40m
2026-05-27 N42477 RAL → RAL May 27, 18:15 UTCMay 27, 19:25 UTC1h 10m
2026-05-27 N42477 RAL → RAL May 27, 15:35 UTCMay 27, 16:45 UTC1h 10m
2026-05-24 N42477 - May 24, 20:55 UTCMay 24, 21:15 UTC20m
2026-05-24 N42477 RAL → HMT May 24, 20:25 UTCMay 24, 20:50 UTC25m
2026-05-24 N42477 RAL → RAL May 24, 17:05 UTCMay 24, 17:40 UTC35m
2026-05-23 N42477 RAL → RAL May 23, 21:40 UTCMay 23, 22:05 UTC25m
2026-05-22 N42477 - May 22, 18:55 UTCMay 22, 19:15 UTC20m
2026-05-22 N42477 - May 22, 17:35 UTCMay 22, 17:55 UTC20m
2026-05-21 N42477 - May 21, 21:25 UTCMay 21, 21:35 UTC10m
2026-05-21 N42477 - May 21, 20:00 UTCMay 21, 20:20 UTC20m
2026-05-20 N42477 - May 20, 21:30 UTCMay 20, 21:50 UTC20m
2026-05-20 N42477 RAL → POC May 20, 15:35 UTCMay 20, 16:50 UTC1h 15m
2026-05-19 N42477 - May 19, 22:20 UTCMay 20, 00:35 UTC2h 15m
2026-05-19 N42477 - May 19, 21:30 UTCMay 19, 21:50 UTC20m
2026-05-19 N42477 RAL → RAL May 19, 15:20 UTCMay 19, 17:05 UTC1h 45m
2026-05-18 N42477 HMT → RAL May 18, 16:05 UTCMay 18, 16:35 UTC30m
2026-05-18 N42477 RAL → HMT May 18, 15:20 UTCMay 18, 16:00 UTC40m
2026-05-15 N42477 RAL → RAL May 15, 23:45 UTCMay 16, 00:15 UTC30m
2026-05-13 N42477 RIV → RAL May 13, 21:50 UTCMay 13, 22:00 UTC10m
2026-05-13 N42477 - May 13, 20:55 UTCMay 13, 21:20 UTC25m

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 N42477 page for operator, model, and routing details .

Mode-S A50DE8 frequently asked

What is Mode-S code A50DE8?
A50DE8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N42477.
Where is Mode-S A50DE8 registered?
Mode-S code A50DE8 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 A50DE8 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A50DE8, octal 51206750, decimal 10,817,000.
What flights does A50DE8 operate?
Mode-S A50DE8 has broadcast 1 distinct callsign, including N42477.