sensors Mode-S transponder

A7F3AE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N611NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A7F3AE
Octal
51771656
Decimal
11,006,894
Country
US
Tail
N611NN
Type
CRJ9
No current signal · last broadcast 12h ago
Flights observed
13
Distinct callsigns
7
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A7F3AE.

Country allocation

The ICAO 24-bit address A7F3AE 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 7 distinct

Callsign Airline Flights Last seen
JIA5579 PSA Airlines 3 2026-04-13
JIA5278 - 3 2026-04-13
JIA5450 - 2 2026-04-13
JIA5381 - 2 2026-04-13
JIA5600 - 1 2026-04-14
JIA5529 PSA Airlines 1 2026-04-12
JIA5195 - 1 2026-04-12

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 JIA5600 - Apr 14, 10:15 UTCApr 14, 11:05 UTC50m
2026-04-13 JIA5381 - Apr 13, 23:15 UTCApr 13, 23:40 UTC25m
2026-04-13 JIA5381 - Apr 13, 20:05 UTCApr 13, 22:25 UTC2h 20m
2026-04-13 JIA5579 PHL → BUF Apr 13, 16:59 UTCApr 13, 18:49 UTC1h 50m
2026-04-13 JIA5579 PHL → BUF Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 JIA5579 PHL → BUF Apr 13, 14:35 UTCApr 13, 16:05 UTC1h 30m
2026-04-13 JIA5278 - Apr 13, 12:20 UTCApr 13, 12:55 UTC35m
2026-04-13 JIA5278 - Apr 13, 11:35 UTCApr 13, 12:32 UTC57m
2026-04-13 JIA5278 - Apr 13, 12:15 UTCApr 13, 12:54 UTC39m
2026-04-13 JIA5450 - Apr 13, 01:47 UTCApr 13, 02:39 UTC52m
2026-04-13 JIA5450 - Apr 13, 01:51 UTCApr 13, 02:39 UTC48m
2026-04-12 JIA5529 DCA → RDU Apr 12, 23:55 UTCApr 13, 00:05 UTC10m
2026-04-12 JIA5195 - Apr 12, 17:55 UTCApr 12, 19:05 UTC1h 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 N611NN page for operator, model, and routing details .

Mode-S A7F3AE frequently asked

What is Mode-S code A7F3AE?
A7F3AE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N611NN.
Where is Mode-S A7F3AE registered?
Mode-S code A7F3AE 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 A7F3AE broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7F3AE, octal 51771656, decimal 11,006,894.
What flights does A7F3AE operate?
Mode-S A7F3AE has broadcast 7 distinct callsigns, including JIA5579, JIA5278, JIA5450, JIA5381, JIA5600.