sensors Mode-S transponder

AAF002

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N80343 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AAF002
Octal
52570002
Decimal
11,202,562
Country
US
Tail
N80343
Type
E75L
No current signal · last broadcast 1d ago
Flights observed
6
Distinct callsigns
4
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AAF002.

Country allocation

The ICAO 24-bit address AAF002 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 4 distinct

Callsign Airline Flights Last seen
ASH6237 - 3 2026-04-13
ASH6238 - 1 2026-04-13
ASH6119 Mesa Airlines 1 2026-04-12
ASH6116 Mesa Airlines 1 2026-04-12

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 ASH6238 - Apr 13, 13:05 UTCApr 13, 14:15 UTC1h 10m
2026-04-13 ASH6237 - Apr 13, 04:20 UTCApr 13, 04:30 UTC10m
2026-04-13 ASH6237 - Apr 13, 03:55 UTCApr 13, 04:30 UTC35m
2026-04-13 ASH6237 - Apr 13, 03:10 UTCApr 13, 04:15 UTC1h 5m
2026-04-12 ASH6116 LGA → IAH Apr 12, 23:55 UTCApr 13, 00:20 UTC25m
2026-04-12 ASH6119 LGA → IAH Apr 12, 17:30 UTCApr 12, 19:40 UTC2h 10m

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 N80343 page for operator, model, and routing details .

Mode-S AAF002 frequently asked

What is Mode-S code AAF002?
AAF002 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N80343.
Where is Mode-S AAF002 registered?
Mode-S code AAF002 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 AAF002 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 AAF002, octal 52570002, decimal 11,202,562.
What flights does AAF002 operate?
Mode-S AAF002 has broadcast 4 distinct callsigns, including ASH6237, ASH6238, ASH6119, ASH6116.