sensors Mode-S transponder

A32FA7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N304RB · BOEING 737 MAX 8 · operated by AMERICAN AIRLINES INC

Hex
A32FA7
Octal
50627647
Decimal
10,694,567
Country
US
Tail
N304RB
Type
B38M
No current signal · last broadcast 1d ago
Flights observed
8
Distinct callsigns
3
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A32FA7.

Country allocation

The ICAO 24-bit address A32FA7 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 3 distinct

Callsign Airline Flights Last seen
AAL1968 - 4 2026-04-13
AAL2399 - 3 2026-04-13
AAL818 American Airlines 1 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 AAL818 PHX → CLT Apr 13, 21:00 UTCApr 13, 23:40 UTC2h 40m
2026-04-13 AAL2399 - Apr 13, 16:15 UTCApr 13, 17:55 UTC1h 40m
2026-04-13 AAL2399 - Apr 13, 15:50 UTCApr 13, 17:55 UTC2h 5m
2026-04-13 AAL2399 - Apr 13, 14:50 UTCApr 13, 16:15 UTC1h 25m
2026-04-13 AAL1968 - Apr 13, 04:20 UTCApr 13, 06:45 UTC2h 25m
2026-04-13 AAL1968 - Apr 13, 03:55 UTCApr 13, 06:45 UTC2h 50m
2026-04-13 AAL1968 - Apr 13, 02:23 UTCApr 13, 06:50 UTC4h 27m
2026-04-13 AAL1968 - Apr 13, 02:19 UTCApr 13, 06:41 UTC4h 22m

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 N304RB page for operator, model, and routing details .

Mode-S A32FA7 frequently asked

What is Mode-S code A32FA7?
A32FA7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N304RB.
Where is Mode-S A32FA7 registered?
Mode-S code A32FA7 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 A32FA7 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 A32FA7, octal 50627647, decimal 10,694,567.
What flights does A32FA7 operate?
Mode-S A32FA7 has broadcast 3 distinct callsigns, including AAL1968, AAL2399, AAL818.