Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB6B84

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N835GA · operated by GULFSTREAM AEROSPACE CORP

Hex
AB6B84
Octal
52665604
Decimal
11,234,180
Country
US
Tail
N835GA
No current signal · last broadcast 1d ago
Flights observed
4
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AB6B84.

Country allocation

The ICAO 24-bit address AB6B84 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
GLF39 - 3 2026-04-16
GLF52 - 1 2026-04-17

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-17 GLF52 - Apr 17, 15:25 UTCApr 17, 16:10 UTC45m
2026-04-16 GLF39 - Apr 16, 19:15 UTCApr 16, 19:50 UTC35m
2026-04-16 GLF39 - Apr 16, 17:15 UTCApr 16, 19:00 UTC1h 45m
2026-04-16 GLF39 - Apr 16, 16:10 UTCApr 16, 17:10 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 N835GA page for operator, model, and routing details .

Mode-S AB6B84 frequently asked

What is Mode-S code AB6B84?
AB6B84 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N835GA.
Where is Mode-S AB6B84 registered?
Mode-S code AB6B84 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 AB6B84 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 AB6B84, octal 52665604, decimal 11,234,180.
What flights does AB6B84 operate?
Mode-S AB6B84 has broadcast 2 distinct callsigns, including GLF39, GLF52.