Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADB401

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N982QS · operated by TEXTRON AVIATION INC

Hex
ADB401
Octal
53332001
Decimal
11,383,809
Country
US
Tail
N982QS
Type
C68A
No current signal · last broadcast 1d ago
Flights observed
3
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ADB401.

Country allocation

The ICAO 24-bit address ADB401 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
EJA982 NetJets 3 2026-04-13

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-13 EJA982 BOI → TEB Apr 13, 20:18 UTCApr 13, 22:12 UTC1h 54m
2026-04-13 EJA982 BOI → TEB Apr 13, 20:00 UTCApr 13, 20:10 UTC10m
2026-04-13 EJA982 BOI → TEB Apr 13, 17:10 UTCApr 13, 19:05 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 N982QS page for operator, model, and routing details .

Mode-S ADB401 frequently asked

What is Mode-S code ADB401?
ADB401 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N982QS.
Where is Mode-S ADB401 registered?
Mode-S code ADB401 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 ADB401 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADB401, octal 53332001, decimal 11,383,809.
What flights does ADB401 operate?
Mode-S ADB401 has broadcast 1 distinct callsign, including EJA982.