Apparatus

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sensors Mode-S transponder

A60B77

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N489QS · operated by AIR HARRISON LLC, BROADSONG LLC, COOL JET LLC, AUTH DAVID, AUTH NANCY, DAVID L HUMPHREYS TRUSTEE

Hex
A60B77
Octal
51405567
Decimal
10,881,911
Country
US
Tail
N489QS
Type
E55P
No current signal · last broadcast 12h ago
Flights observed
123
Distinct callsigns
2
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A60B77.

Country allocation

The ICAO 24-bit address A60B77 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
EJA489 NetJets 120 2026-05-29
N489QS - 3 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA489 DAY → DPA May 29, 22:25 UTCMay 29, 22:35 UTC10m
2026-05-29 EJA489 DAY → DPA May 29, 20:50 UTCMay 29, 21:35 UTC45m
2026-05-29 EJA489 DAY → DPA May 29, 17:00 UTCMay 29, 18:15 UTC1h 15m
2026-05-29 EJA489 DAY → DPA May 29, 14:40 UTCMay 29, 15:35 UTC55m
2026-05-28 EJA489 DAY → DPA May 28, 20:05 UTCMay 28, 20:15 UTC10m
2026-05-28 EJA489 DAY → DPA May 28, 18:05 UTCMay 28, 19:05 UTC1h 0m
2026-05-28 EJA489 DAY → DPA May 28, 11:55 UTCMay 28, 12:45 UTC50m
2026-05-28 EJA489 DAY → DPA May 28, 10:10 UTCMay 28, 10:55 UTC45m
2026-05-27 EJA489 DAY → DPA May 27, 17:05 UTCMay 27, 18:20 UTC1h 15m
2026-05-27 EJA489 DAY → DPA May 27, 13:20 UTCMay 27, 15:50 UTC2h 30m
2026-05-26 EJA489 DAY → DPA May 26, 17:59 UTCMay 26, 20:15 UTC2h 15m
2026-05-26 EJA489 DAY → DPA May 26, 15:24 UTCMay 26, 16:30 UTC1h 5m
2026-05-26 EJA489 DAY → DPA May 26, 12:54 UTCMay 26, 14:30 UTC1h 35m
2026-05-25 EJA489 DAY → DPA May 25, 22:34 UTCMay 26, 00:49 UTC2h 15m
2026-05-25 EJA489 DAY → DPA May 25, 18:50 UTCMay 25, 19:44 UTC54m
2026-05-25 EJA489 DAY → DPA May 25, 17:35 UTCMay 25, 18:10 UTC35m
2026-05-25 EJA489 DAY → DPA May 25, 14:05 UTCMay 25, 15:35 UTC1h 30m
2026-05-24 EJA489 DAY → DPA May 24, 20:35 UTCMay 24, 21:45 UTC1h 10m
2026-05-23 EJA489 DAY → DPA May 23, 22:20 UTCMay 24, 00:35 UTC2h 15m
2026-05-23 N489QS - May 23, 20:55 UTCMay 23, 21:25 UTC30m
2026-05-22 N489QS - May 22, 19:05 UTCMay 22, 19:30 UTC25m
2026-05-22 EJA489 DAY → DPA May 22, 16:05 UTCMay 22, 18:30 UTC2h 25m
2026-05-21 EJA489 DAY → DPA May 21, 20:10 UTCMay 21, 21:05 UTC55m
2026-05-21 EJA489 DAY → DPA May 21, 18:40 UTCMay 21, 19:35 UTC55m
2026-05-21 EJA489 DAY → DPA May 21, 15:40 UTCMay 21, 17:05 UTC1h 25m
2026-05-20 EJA489 DAY → DPA May 20, 20:05 UTCMay 20, 21:00 UTC55m
2026-05-20 EJA489 DAY → DPA May 20, 17:35 UTCMay 20, 18:25 UTC50m
2026-05-20 EJA489 DAY → DPA May 20, 15:00 UTCMay 20, 16:30 UTC1h 30m
2026-05-19 EJA489 DAY → DPA May 19, 22:50 UTCMay 20, 01:00 UTC2h 10m
2026-05-19 EJA489 DAY → DPA May 19, 13:40 UTCMay 19, 16:10 UTC2h 30m
2026-05-18 EJA489 DAY → DPA May 18, 21:20 UTCMay 18, 22:50 UTC1h 30m
2026-05-18 EJA489 DAY → DPA May 18, 18:45 UTCMay 18, 19:30 UTC45m
2026-05-18 EJA489 DAY → DPA May 18, 13:50 UTCMay 18, 15:00 UTC1h 10m
2026-05-17 EJA489 DAY → DPA May 17, 22:25 UTCMay 18, 00:25 UTC2h 0m
2026-05-17 EJA489 DAY → DPA May 17, 21:10 UTCMay 17, 21:50 UTC40m
2026-05-17 EJA489 DAY → DPA May 17, 18:05 UTCMay 17, 18:40 UTC35m
2026-05-17 EJA489 DAY → DPA May 17, 16:20 UTCMay 17, 16:45 UTC25m
2026-05-17 EJA489 DAY → DPA May 17, 14:01 UTCMay 17, 15:10 UTC1h 10m
2026-05-16 EJA489 DAY → DPA May 16, 14:31 UTCMay 16, 15:25 UTC55m
2026-05-15 EJA489 DAY → DPA May 15, 19:40 UTCMay 15, 20:50 UTC1h 10m
2026-05-15 EJA489 DAY → DPA May 15, 15:05 UTCMay 15, 18:10 UTC3h 5m
2026-05-15 EJA489 DAY → DPA May 15, 02:05 UTCMay 15, 02:25 UTC20m
2026-05-14 N489QS - May 14, 16:30 UTCMay 15, 00:25 UTC7h 55m
2026-05-14 EJA489 DAY → DPA May 14, 03:50 UTCMay 14, 04:10 UTC20m
2026-05-14 EJA489 DAY → DPA May 14, 02:30 UTCMay 14, 02:50 UTC20m
2026-05-14 EJA489 DAY → DPA May 14, 01:00 UTCMay 14, 01:15 UTC15m
2026-05-13 EJA489 DAY → DPA May 13, 23:20 UTCMay 14, 00:05 UTC45m
2026-05-13 EJA489 DAY → DPA May 13, 18:55 UTCMay 13, 19:20 UTC25m
2026-05-13 EJA489 DAY → DPA May 13, 16:35 UTCMay 13, 17:30 UTC55m
2026-05-12 EJA489 DAY → DPA May 12, 13:45 UTCMay 12, 15:40 UTC1h 55m

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 N489QS page for operator, model, and routing details .

Mode-S A60B77 frequently asked

What is Mode-S code A60B77?
A60B77 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N489QS.
Where is Mode-S A60B77 registered?
Mode-S code A60B77 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 A60B77 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A60B77, octal 51405567, decimal 10,881,911.
What flights does A60B77 operate?
Mode-S A60B77 has broadcast 2 distinct callsigns, including EJA489, N489QS.