Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADB04A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N981QS · operated by TEXTRON AVIATION INC

Hex
ADB04A
Octal
53330112
Decimal
11,382,858
Country
US
Tail
N981QS
Type
C68A
No current signal · last broadcast 14h ago
Flights observed
148
Distinct callsigns
2
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S ADB04A.

Country allocation

The ICAO 24-bit address ADB04A 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
EJA981 NetJets 141 2026-05-29
N981QS - 7 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA981 LAS → YIP May 29, 19:20 UTCMay 29, 20:15 UTC55m
2026-05-29 EJA981 LAS → YIP May 29, 15:55 UTCMay 29, 17:25 UTC1h 30m
2026-05-29 EJA981 LAS → YIP May 29, 14:35 UTCMay 29, 15:05 UTC30m
2026-05-29 EJA981 LAS → YIP May 29, 13:00 UTCMay 29, 13:20 UTC20m
2026-05-28 EJA981 LAS → YIP May 28, 19:10 UTCMay 28, 20:10 UTC1h 0m
2026-05-28 EJA981 LAS → YIP May 28, 16:20 UTCMay 28, 16:40 UTC20m
2026-05-26 EJA981 LAS → YIP May 26, 12:00 UTCMay 26, 12:35 UTC35m
2026-05-22 EJA981 LAS → YIP May 22, 20:55 UTCMay 22, 22:45 UTC1h 50m
2026-05-22 EJA981 LAS → YIP May 22, 18:15 UTCMay 22, 19:05 UTC50m
2026-05-22 EJA981 LAS → YIP May 22, 16:35 UTCMay 22, 17:05 UTC30m
2026-05-22 EJA981 LAS → YIP May 22, 14:25 UTCMay 22, 15:20 UTC55m
2026-05-22 EJA981 LAS → YIP May 22, 12:10 UTCMay 22, 13:10 UTC1h 0m
2026-05-21 EJA981 LAS → YIP May 21, 22:30 UTCMay 21, 23:00 UTC30m
2026-05-21 EJA981 LAS → YIP May 21, 20:35 UTCMay 21, 21:05 UTC30m
2026-05-21 EJA981 LAS → YIP May 21, 18:55 UTCMay 21, 19:55 UTC1h 0m
2026-05-21 EJA981 LAS → YIP May 21, 16:45 UTCMay 21, 17:20 UTC35m
2026-05-21 EJA981 LAS → YIP May 21, 15:25 UTCMay 21, 16:05 UTC40m
2026-05-21 EJA981 LAS → YIP May 21, 13:15 UTCMay 21, 13:40 UTC25m
2026-05-20 EJA981 LAS → YIP May 20, 20:45 UTCMay 20, 23:10 UTC2h 25m
2026-05-20 EJA981 LAS → YIP May 20, 17:30 UTCMay 20, 20:05 UTC2h 35m
2026-05-20 EJA981 LAS → YIP May 20, 14:40 UTCMay 20, 15:35 UTC55m
2026-05-20 EJA981 LAS → YIP May 20, 12:30 UTCMay 20, 13:20 UTC50m
2026-05-19 EJA981 LAS → YIP May 19, 13:30 UTCMay 19, 20:05 UTC6h 35m
2026-05-18 EJA981 LAS → YIP May 18, 14:05 UTCMay 18, 17:35 UTC3h 30m
2026-05-17 EJA981 LAS → YIP May 17, 23:35 UTCMay 18, 00:15 UTC40m
2026-05-17 EJA981 LAS → YIP May 17, 21:40 UTCMay 17, 22:50 UTC1h 10m
2026-05-17 EJA981 LAS → YIP May 17, 19:40 UTCMay 17, 20:25 UTC45m
2026-05-17 EJA981 LAS → YIP May 17, 16:55 UTCMay 17, 17:55 UTC1h 0m
2026-05-17 EJA981 LAS → YIP May 17, 13:35 UTCMay 17, 14:10 UTC35m
2026-05-16 EJA981 LAS → YIP May 16, 19:45 UTCMay 16, 20:15 UTC30m
2026-05-15 EJA981 LAS → YIP May 15, 22:35 UTCMay 16, 01:20 UTC2h 45m
2026-05-15 EJA981 LAS → YIP May 15, 18:25 UTCMay 15, 19:30 UTC1h 5m
2026-05-15 EJA981 LAS → YIP May 15, 15:15 UTCMay 15, 17:50 UTC2h 35m
2026-05-15 EJA981 LAS → YIP May 15, 11:40 UTCMay 15, 13:15 UTC1h 35m
2026-05-14 EJA981 LAS → YIP May 14, 18:55 UTCMay 14, 20:25 UTC1h 30m
2026-05-14 EJA981 LAS → YIP May 14, 15:50 UTCMay 14, 16:55 UTC1h 5m
2026-05-14 EJA981 LAS → YIP May 14, 13:25 UTCMay 14, 14:15 UTC50m
2026-05-13 EJA981 LAS → YIP May 13, 15:10 UTCMay 13, 17:20 UTC2h 10m
2026-05-13 EJA981 LAS → YIP May 13, 12:10 UTCMay 13, 13:15 UTC1h 5m
2026-05-12 EJA981 LAS → YIP May 12, 23:15 UTCMay 12, 23:50 UTC35m
2026-05-12 EJA981 LAS → YIP May 12, 21:10 UTCMay 12, 22:05 UTC55m
2026-05-12 EJA981 LAS → YIP May 12, 19:00 UTCMay 12, 19:35 UTC35m
2026-05-12 EJA981 LAS → YIP May 12, 17:10 UTCMay 12, 18:00 UTC50m
2026-05-12 EJA981 LAS → YIP May 12, 14:30 UTCMay 12, 16:30 UTC2h 0m
2026-05-11 N981QS - May 11, 22:05 UTCMay 11, 22:35 UTC29m
2026-05-11 N981QS - May 11, 19:50 UTCMay 11, 21:05 UTC1h 15m
2026-05-11 EJA981 LAS → YIP May 11, 17:15 UTCMay 11, 18:50 UTC1h 35m
2026-05-11 EJA981 LAS → YIP May 11, 14:20 UTCMay 11, 16:15 UTC1h 55m
2026-05-10 EJA981 LAS → YIP May 10, 21:04 UTCMay 10, 21:40 UTC35m
2026-05-10 EJA981 LAS → YIP May 10, 18:20 UTCMay 10, 20:05 UTC1h 45m

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 N981QS page for operator, model, and routing details .

Mode-S ADB04A frequently asked

What is Mode-S code ADB04A?
ADB04A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N981QS.
Where is Mode-S ADB04A registered?
Mode-S code ADB04A 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 ADB04A broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADB04A, octal 53330112, decimal 11,382,858.
What flights does ADB04A operate?
Mode-S ADB04A has broadcast 2 distinct callsigns, including EJA981, N981QS.