Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A79122

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N587NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A79122
Octal
51710442
Decimal
10,981,666
Country
US
Tail
N587NN
Type
CRJ9
No current signal · last broadcast 2d ago
Flights observed
3
Distinct callsigns
2
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A79122.

Country allocation

The ICAO 24-bit address A79122 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
JIA5066 - 2 2026-04-13
JIA5601 - 1 2026-04-12

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-13 JIA5066 - Apr 13, 00:20 UTCApr 13, 01:20 UTC1h 0m
2026-04-12 JIA5066 PSQ → TYS Apr 12, 23:59 UTCApr 13, 01:18 UTC1h 19m
2026-04-12 JIA5601 - Apr 12, 18:35 UTCApr 12, 19:00 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 N587NN page for operator, model, and routing details .

Mode-S A79122 frequently asked

What is Mode-S code A79122?
A79122 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N587NN.
Where is Mode-S A79122 registered?
Mode-S code A79122 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 A79122 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A79122, octal 51710442, decimal 10,981,666.
What flights does A79122 operate?
Mode-S A79122 has broadcast 2 distinct callsigns, including JIA5066, JIA5601.