Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A5D51C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N475QS · EMBRAER EMB-505 Phenom 300 · operated by ARGO EAGLE LLC, BARELA HOLDINGS LLC, DERRICK CORP, FAMILY ENTERTAINMENT TELEVISION INC, G&S AVIATION LLC, PYNE GEORGE F 4TH

Hex
A5D51C
Octal
51352434
Decimal
10,867,996
Country
US
Tail
N475QS
Type
E55P
No current signal · last broadcast 4h ago
Flights observed
128
Distinct callsigns
2
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A5D51C.

Country allocation

The ICAO 24-bit address A5D51C 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 2 distinct

Callsign Airline Flights Last seen
EJA475 NetJets 127 2026-05-29
N475QS - 1 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA475 TXK → MMU May 29, 22:20 UTCMay 29, 23:35 UTC1h 15m
2026-05-29 EJA475 TXK → MMU May 29, 18:50 UTCMay 29, 19:50 UTC1h 0m
2026-05-29 EJA475 TXK → MMU May 29, 16:55 UTCMay 29, 17:45 UTC50m
2026-05-29 EJA475 TXK → MMU May 29, 14:50 UTCMay 29, 15:40 UTC50m
2026-05-29 EJA475 TXK → MMU May 29, 13:35 UTCMay 29, 14:05 UTC30m
2026-05-28 EJA475 TXK → MMU May 28, 20:20 UTCMay 28, 21:15 UTC55m
2026-05-28 EJA475 TXK → MMU May 28, 18:05 UTCMay 28, 18:50 UTC45m
2026-05-28 EJA475 TXK → MMU May 28, 15:20 UTCMay 28, 17:25 UTC2h 5m
2026-05-28 EJA475 TXK → MMU May 28, 12:35 UTCMay 28, 13:40 UTC1h 5m
2026-05-27 EJA475 TXK → MMU May 27, 20:45 UTCMay 27, 21:50 UTC1h 5m
2026-05-27 EJA475 TXK → MMU May 27, 18:25 UTCMay 27, 18:50 UTC25m
2026-05-27 EJA475 TXK → MMU May 27, 16:40 UTCMay 27, 17:40 UTC1h 0m
2026-05-27 EJA475 TXK → MMU May 27, 14:10 UTCMay 27, 15:25 UTC1h 15m
2026-05-27 EJA475 TXK → MMU May 27, 12:15 UTCMay 27, 13:20 UTC1h 5m
2026-05-26 EJA475 TXK → MMU May 26, 18:14 UTCMay 26, 19:50 UTC1h 35m
2026-05-26 EJA475 TXK → MMU May 26, 15:20 UTCMay 26, 16:59 UTC1h 40m
2026-05-25 EJA475 TXK → MMU May 25, 17:25 UTCMay 25, 19:05 UTC1h 40m
2026-05-25 EJA475 TXK → MMU May 25, 15:40 UTCMay 25, 16:35 UTC55m
2026-05-23 EJA475 TXK → MMU May 23, 15:40 UTCMay 23, 16:20 UTC40m
2026-05-23 EJA475 TXK → MMU May 23, 11:20 UTCMay 23, 12:25 UTC1h 5m
2026-05-22 EJA475 TXK → MMU May 22, 23:45 UTCMay 23, 01:00 UTC1h 15m
2026-05-22 EJA475 TXK → MMU May 22, 17:35 UTCMay 22, 19:55 UTC2h 20m
2026-05-22 EJA475 TXK → MMU May 22, 16:15 UTCMay 22, 16:25 UTC10m
2026-05-21 EJA475 TXK → MMU May 21, 23:30 UTCMay 22, 01:35 UTC2h 5m
2026-05-21 EJA475 TXK → MMU May 21, 21:30 UTCMay 21, 21:50 UTC20m
2026-05-21 EJA475 TXK → MMU May 21, 19:20 UTCMay 21, 20:05 UTC45m
2026-05-21 EJA475 TXK → MMU May 21, 15:50 UTCMay 21, 17:55 UTC2h 5m
2026-05-20 EJA475 TXK → MMU May 20, 21:15 UTCMay 20, 22:35 UTC1h 20m
2026-05-20 EJA475 TXK → MMU May 20, 19:40 UTCMay 20, 20:00 UTC20m
2026-05-20 EJA475 TXK → MMU May 20, 14:15 UTCMay 20, 18:45 UTC4h 30m
2026-05-19 EJA475 TXK → MMU May 19, 20:20 UTCMay 19, 22:30 UTC2h 10m
2026-05-19 EJA475 TXK → MMU May 19, 14:15 UTCMay 19, 16:40 UTC2h 25m
2026-05-19 EJA475 TXK → MMU May 19, 12:15 UTCMay 19, 13:05 UTC50m
2026-05-18 EJA475 TXK → MMU May 18, 19:20 UTCMay 18, 20:20 UTC1h 0m
2026-05-18 EJA475 TXK → MMU May 18, 15:20 UTCMay 18, 16:20 UTC1h 0m
2026-05-18 EJA475 TXK → MMU May 18, 13:40 UTCMay 18, 14:30 UTC50m
2026-05-18 EJA475 TXK → MMU May 18, 10:30 UTCMay 18, 12:15 UTC1h 45m
2026-05-17 EJA475 TXK → MMU May 17, 17:15 UTCMay 17, 19:15 UTC2h 0m
2026-05-17 EJA475 TXK → MMU May 17, 14:15 UTCMay 17, 16:05 UTC1h 50m
2026-05-15 EJA475 TXK → MMU May 15, 17:00 UTCMay 15, 17:30 UTC30m
2026-05-15 EJA475 TXK → MMU May 15, 13:25 UTCMay 15, 16:05 UTC2h 39m
2026-05-15 EJA475 TXK → MMU May 15, 11:10 UTCMay 15, 12:15 UTC1h 5m
2026-05-14 EJA475 TXK → MMU May 14, 22:40 UTCMay 14, 23:25 UTC45m
2026-05-14 EJA475 TXK → MMU May 14, 17:55 UTCMay 14, 19:30 UTC1h 35m
2026-05-13 EJA475 TXK → MMU May 13, 14:05 UTCMay 13, 14:40 UTC35m
2026-05-11 EJA475 TXK → MMU May 11, 09:50 UTCMay 11, 10:30 UTC40m
2026-05-10 EJA475 TXK → MMU May 10, 01:14 UTCMay 10, 01:39 UTC25m
2026-05-09 EJA475 TXK → MMU May 9, 21:50 UTCMay 10, 00:39 UTC2h 50m
2026-05-09 EJA475 TXK → MMU May 9, 19:55 UTCMay 9, 20:49 UTC55m
2026-05-09 EJA475 TXK → MMU May 9, 14:40 UTCMay 9, 15:40 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 N475QS page for operator, model, and routing details .

Mode-S A5D51C frequently asked

What is Mode-S code A5D51C?
A5D51C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N475QS.
Where is Mode-S A5D51C registered?
Mode-S code A5D51C 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 A5D51C broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5D51C, octal 51352434, decimal 10,867,996.
What flights does A5D51C operate?
Mode-S A5D51C has broadcast 2 distinct callsigns, including EJA475, N475QS.