Apparatus

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sensors Mode-S transponder

A66E03

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N513QS · CESSNA 680 Citation Latitude · operated by NETJETS SALES INC, ADEQUATE AVIATION HOLDINGS LLC, BARNHART INTERESTS INC, LINDLEY JOHN D, LINDLEY CHERIE N, KELLOGG BROWN & ROOT SERVICES INTERNATIONAL INC

Hex
A66E03
Octal
51467003
Decimal
10,907,139
Country
US
Tail
N513QS
Type
C68A
No current signal · last broadcast 9d ago
Flights observed
113
Distinct callsigns
2
Country
US
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S A66E03.

Country allocation

The ICAO 24-bit address A66E03 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
EJA513 NetJets 111 2026-05-24
N513QS - 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-24 EJA513 MRY → PLN May 24, 16:40 UTCMay 24, 20:40 UTC4h 0m
2026-05-20 EJA513 MRY → PLN May 20, 20:20 UTCMay 20, 21:10 UTC50m
2026-05-20 EJA513 MRY → PLN May 20, 18:15 UTCMay 20, 19:10 UTC55m
2026-05-20 EJA513 MRY → PLN May 20, 12:15 UTCMay 20, 16:00 UTC3h 45m
2026-05-19 EJA513 MRY → PLN May 19, 21:35 UTCMay 19, 22:20 UTC45m
2026-05-19 EJA513 MRY → PLN May 19, 19:20 UTCMay 19, 20:00 UTC40m
2026-05-19 EJA513 MRY → PLN May 19, 14:55 UTCMay 19, 15:55 UTC1h 0m
2026-05-19 EJA513 MRY → PLN May 19, 10:40 UTCMay 19, 12:10 UTC1h 30m
2026-05-18 EJA513 MRY → PLN May 18, 16:55 UTCMay 18, 19:00 UTC2h 4m
2026-05-18 EJA513 MRY → PLN May 18, 13:50 UTCMay 18, 16:00 UTC2h 10m
2026-05-18 EJA513 MRY → PLN May 18, 00:25 UTCMay 18, 01:15 UTC50m
2026-05-17 EJA513 MRY → PLN May 17, 22:35 UTCMay 17, 23:30 UTC55m
2026-05-17 EJA513 MRY → PLN May 17, 20:20 UTCMay 17, 21:25 UTC1h 5m
2026-05-17 EJA513 MRY → PLN May 17, 16:01 UTCMay 17, 17:45 UTC1h 45m
2026-05-16 EJA513 MRY → PLN May 16, 23:25 UTCMay 17, 00:10 UTC45m
2026-05-16 EJA513 MRY → PLN May 16, 17:20 UTCMay 16, 21:45 UTC4h 25m
2026-05-16 EJA513 MRY → PLN May 16, 15:05 UTCMay 16, 15:35 UTC30m
2026-05-15 EJA513 MRY → PLN May 15, 19:55 UTCMay 15, 21:25 UTC1h 30m
2026-05-15 EJA513 MRY → PLN May 15, 16:40 UTCMay 15, 16:55 UTC15m
2026-05-15 EJA513 MRY → PLN May 15, 14:15 UTCMay 15, 15:55 UTC1h 39m
2026-05-14 EJA513 MRY → PLN May 14, 20:25 UTCMay 14, 23:05 UTC2h 40m
2026-05-14 EJA513 MRY → PLN May 14, 18:25 UTCMay 14, 19:05 UTC40m
2026-05-14 EJA513 MRY → PLN May 14, 16:25 UTCMay 14, 17:15 UTC50m
2026-05-14 EJA513 MRY → PLN May 14, 14:01 UTCMay 14, 14:50 UTC50m
2026-05-13 EJA513 MRY → PLN May 13, 23:40 UTCMay 14, 00:25 UTC45m
2026-05-13 EJA513 MRY → PLN May 13, 22:25 UTCMay 13, 22:40 UTC15m
2026-05-13 EJA513 MRY → PLN May 13, 19:45 UTCMay 13, 21:00 UTC1h 15m
2026-05-13 EJA513 MRY → PLN May 13, 16:45 UTCMay 13, 17:05 UTC20m
2026-05-13 EJA513 MRY → PLN May 13, 13:31 UTCMay 13, 16:05 UTC2h 35m
2026-05-12 EJA513 MRY → PLN May 12, 23:50 UTCMay 13, 01:20 UTC1h 30m
2026-05-12 EJA513 MRY → PLN May 12, 21:05 UTCMay 12, 21:50 UTC45m
2026-05-12 EJA513 MRY → PLN May 12, 18:15 UTCMay 12, 19:50 UTC1h 35m
2026-05-12 EJA513 MRY → PLN May 12, 16:50 UTCMay 12, 17:20 UTC30m
2026-05-12 EJA513 MRY → PLN May 12, 15:15 UTCMay 12, 15:50 UTC35m
2026-05-11 EJA513 MRY → PLN May 11, 20:35 UTCMay 11, 22:35 UTC1h 59m
2026-05-11 EJA513 MRY → PLN May 11, 16:00 UTCMay 11, 19:55 UTC3h 55m
2026-05-11 EJA513 MRY → PLN May 11, 14:35 UTCMay 11, 14:55 UTC20m
2026-05-11 EJA513 MRY → PLN May 11, 00:30 UTCMay 11, 01:10 UTC40m
2026-05-10 EJA513 MRY → PLN May 10, 22:09 UTCMay 10, 22:20 UTC10m
2026-05-10 EJA513 MRY → PLN May 10, 20:30 UTCMay 10, 21:19 UTC50m
2026-05-10 EJA513 MRY → PLN May 10, 16:34 UTCMay 10, 16:59 UTC25m
2026-05-10 EJA513 MRY → PLN May 10, 02:50 UTCMay 10, 03:45 UTC55m
2026-05-09 EJA513 MRY → PLN May 9, 00:40 UTCMay 9, 02:25 UTC1h 45m
2026-05-08 EJA513 MRY → PLN May 8, 20:05 UTCMay 8, 22:05 UTC2h 0m
2026-05-08 EJA513 MRY → PLN May 8, 15:25 UTCMay 8, 18:35 UTC3h 10m
2026-05-08 EJA513 MRY → PLN May 8, 13:30 UTCMay 8, 14:20 UTC50m
2026-05-07 EJA513 MRY → PLN May 7, 22:15 UTCMay 7, 22:54 UTC40m
2026-05-07 EJA513 MRY → PLN May 7, 20:20 UTCMay 7, 21:25 UTC1h 5m
2026-05-07 EJA513 MRY → PLN May 7, 18:15 UTCMay 7, 19:00 UTC45m
2026-05-07 EJA513 MRY → PLN May 7, 17:05 UTCMay 7, 17:30 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 N513QS page for operator, model, and routing details .

Mode-S A66E03 frequently asked

What is Mode-S code A66E03?
A66E03 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N513QS.
Where is Mode-S A66E03 registered?
Mode-S code A66E03 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 A66E03 broadcasting right now?
No active broadcast right now. Last signal was 9d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A66E03, octal 51467003, decimal 10,907,139.
What flights does A66E03 operate?
Mode-S A66E03 has broadcast 2 distinct callsigns, including EJA513, N513QS.