Apparatus

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sensors Mode-S transponder

A5DC8A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N477QS · operated by BEDROCK AVIATION LLC, BIG SKY MANAGEMENT COMPANY LLC, DITCH WITCH SALES INC, E2 CONSULTING ENGINEERS INC, SOISTMAN FRANCIS S JR, GE VERNOVA INTERNATIONAL LLC

Hex
A5DC8A
Octal
51356212
Decimal
10,869,898
Country
US
Tail
N477QS
Type
E55P
No current signal · last broadcast 11h ago
Flights observed
120
Distinct callsigns
1
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A5DC8A.

Country allocation

The ICAO 24-bit address A5DC8A 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
EJA477 NetJets 120 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA477 PWK → GSO May 29, 16:15 UTCMay 29, 18:50 UTC2h 35m
2026-05-29 EJA477 PWK → GSO May 29, 14:50 UTCMay 29, 15:15 UTC25m
2026-05-29 EJA477 PWK → GSO May 29, 12:15 UTCMay 29, 13:50 UTC1h 35m
2026-05-28 EJA477 PWK → GSO May 28, 22:40 UTCMay 28, 23:15 UTC35m
2026-05-28 EJA477 PWK → GSO May 28, 20:30 UTCMay 28, 21:10 UTC40m
2026-05-28 EJA477 PWK → GSO May 28, 18:10 UTCMay 28, 18:55 UTC45m
2026-05-28 EJA477 PWK → GSO May 28, 16:00 UTCMay 28, 16:50 UTC50m
2026-05-28 EJA477 PWK → GSO May 28, 13:10 UTCMay 28, 15:00 UTC1h 50m
2026-05-27 EJA477 PWK → GSO May 27, 20:55 UTCMay 27, 22:25 UTC1h 30m
2026-05-27 EJA477 PWK → GSO May 27, 18:10 UTCMay 27, 20:20 UTC2h 10m
2026-05-27 EJA477 PWK → GSO May 27, 16:30 UTCMay 27, 17:05 UTC35m
2026-05-27 EJA477 PWK → GSO May 27, 14:35 UTCMay 27, 15:05 UTC30m
2026-05-27 EJA477 PWK → GSO May 27, 11:55 UTCMay 27, 12:30 UTC35m
2026-05-26 EJA477 PWK → GSO May 26, 19:10 UTCMay 26, 19:50 UTC40m
2026-05-26 EJA477 PWK → GSO May 26, 17:15 UTCMay 26, 17:39 UTC25m
2026-05-26 EJA477 PWK → GSO May 26, 14:09 UTCMay 26, 15:54 UTC1h 45m
2026-05-26 EJA477 PWK → GSO May 26, 12:20 UTCMay 26, 12:35 UTC15m
2026-05-24 EJA477 PWK → GSO May 24, 10:00 UTCMay 24, 10:10 UTC10m
2026-05-22 EJA477 PWK → GSO May 22, 16:45 UTCMay 22, 17:10 UTC25m
2026-05-22 EJA477 PWK → GSO May 22, 01:45 UTCMay 22, 04:00 UTC2h 15m
2026-05-21 EJA477 PWK → GSO May 21, 22:05 UTCMay 21, 23:10 UTC1h 5m
2026-05-21 EJA477 PWK → GSO May 21, 18:50 UTCMay 21, 19:50 UTC1h 0m
2026-05-20 EJA477 PWK → GSO May 20, 16:35 UTCMay 20, 18:00 UTC1h 25m
2026-05-19 EJA477 PWK → GSO May 19, 19:35 UTCMay 19, 21:15 UTC1h 40m
2026-05-19 EJA477 PWK → GSO May 19, 15:10 UTCMay 19, 16:35 UTC1h 25m
2026-05-19 EJA477 PWK → GSO May 19, 12:25 UTCMay 19, 13:40 UTC1h 15m
2026-05-18 EJA477 PWK → GSO May 18, 20:30 UTCMay 18, 23:05 UTC2h 35m
2026-05-18 EJA477 PWK → GSO May 18, 19:15 UTCMay 18, 19:25 UTC10m
2026-05-18 EJA477 PWK → GSO May 18, 16:00 UTCMay 18, 18:00 UTC2h 0m
2026-05-18 EJA477 PWK → GSO May 18, 14:45 UTCMay 18, 14:55 UTC10m
2026-05-14 EJA477 PWK → GSO May 14, 19:15 UTCMay 14, 20:55 UTC1h 40m
2026-05-14 EJA477 PWK → GSO May 14, 17:25 UTCMay 14, 17:40 UTC15m
2026-05-14 EJA477 PWK → GSO May 14, 11:20 UTCMay 14, 11:30 UTC10m
2026-05-13 EJA477 PWK → GSO May 13, 20:35 UTCMay 13, 21:00 UTC25m
2026-05-13 EJA477 PWK → GSO May 13, 16:35 UTCMay 13, 18:55 UTC2h 20m
2026-05-13 EJA477 PWK → GSO May 13, 13:55 UTCMay 13, 15:25 UTC1h 30m
2026-05-13 EJA477 PWK → GSO May 13, 11:40 UTCMay 13, 12:55 UTC1h 15m
2026-05-11 EJA477 PWK → GSO May 11, 19:05 UTCMay 11, 20:15 UTC1h 10m
2026-05-11 EJA477 PWK → GSO May 11, 13:35 UTCMay 11, 16:15 UTC2h 40m
2026-05-10 EJA477 PWK → GSO May 10, 20:20 UTCMay 10, 21:59 UTC1h 40m
2026-05-10 EJA477 PWK → GSO May 10, 17:05 UTCMay 10, 17:59 UTC55m
2026-05-10 EJA477 PWK → GSO May 10, 15:49 UTCMay 10, 16:04 UTC15m
2026-05-09 EJA477 PWK → GSO May 9, 20:20 UTCMay 9, 22:39 UTC2h 20m
2026-05-09 EJA477 PWK → GSO May 9, 18:25 UTCMay 9, 19:19 UTC55m
2026-05-09 EJA477 PWK → GSO May 9, 16:30 UTCMay 9, 17:30 UTC1h 0m
2026-05-09 EJA477 PWK → GSO May 9, 14:40 UTCMay 9, 15:05 UTC25m
2026-05-08 EJA477 PWK → GSO May 8, 21:55 UTCMay 9, 01:05 UTC3h 10m
2026-05-08 EJA477 PWK → GSO May 8, 17:25 UTCMay 8, 18:40 UTC1h 15m
2026-05-08 EJA477 PWK → GSO May 8, 15:25 UTCMay 8, 15:40 UTC15m
2026-05-07 EJA477 PWK → GSO May 7, 22:15 UTCMay 7, 23:14 UTC1h 0m

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 N477QS page for operator, model, and routing details .

Mode-S A5DC8A frequently asked

What is Mode-S code A5DC8A?
A5DC8A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N477QS.
Where is Mode-S A5DC8A registered?
Mode-S code A5DC8A 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 A5DC8A 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 A5DC8A, octal 51356212, decimal 10,869,898.
What flights does A5DC8A operate?
Mode-S A5DC8A has broadcast 1 distinct callsign, including EJA477.