sensors Mode-S transponder

A7E9E7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N609NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A7E9E7
Octal
51764747
Decimal
11,004,391
Country
US
Tail
N609NN
Type
CRJ9
No current signal · last broadcast 1d ago
Flights observed
15
Distinct callsigns
7
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A7E9E7.

Country allocation

The ICAO 24-bit address A7E9E7 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
JIA5508 - 4 2026-04-13
JIA5354 - 3 2026-04-13
JIA5590 PSA Airlines 2 2026-04-13
JIA5517 - 2 2026-04-13
JIA5480 - 2 2026-04-13
JIA5540 - 1 2026-04-13
JIA5147 PSA Airlines 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-13 JIA5540 - Apr 13, 22:00 UTCApr 13, 23:10 UTC1h 10m
2026-04-13 JIA5480 - Apr 13, 20:13 UTCApr 13, 20:57 UTC44m
2026-04-13 JIA5480 - Apr 13, 18:30 UTCApr 13, 19:15 UTC45m
2026-04-13 JIA5508 - Apr 13, 16:15 UTCApr 13, 16:40 UTC25m
2026-04-13 JIA5508 - Apr 13, 15:51 UTCApr 13, 16:59 UTC1h 8m
2026-04-13 JIA5508 - Apr 13, 14:04 UTCApr 13, 14:56 UTC52m
2026-04-13 JIA5508 - Apr 13, 13:40 UTCApr 13, 13:45 UTC5m
2026-04-13 JIA5517 - Apr 13, 11:55 UTCApr 13, 12:20 UTC25m
2026-04-13 JIA5517 - Apr 13, 11:20 UTCApr 13, 12:15 UTC55m
2026-04-13 JIA5354 - Apr 13, 04:20 UTCApr 13, 04:30 UTC10m
2026-04-13 JIA5354 - Apr 13, 03:55 UTCApr 13, 04:30 UTC35m
2026-04-13 JIA5354 - Apr 13, 03:45 UTCApr 13, 04:32 UTC47m
2026-04-13 JIA5590 PHL → ROC Apr 13, 00:20 UTCApr 13, 02:00 UTC1h 40m
2026-04-12 JIA5590 PHL → ROC Apr 12, 23:55 UTCApr 13, 02:00 UTC2h 5m
2026-04-12 JIA5147 CHS → DCA Apr 12, 17:15 UTCApr 12, 18:15 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 N609NN page for operator, model, and routing details .

Mode-S A7E9E7 frequently asked

What is Mode-S code A7E9E7?
A7E9E7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N609NN.
Where is Mode-S A7E9E7 registered?
Mode-S code A7E9E7 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 A7E9E7 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 A7E9E7, octal 51764747, decimal 11,004,391.
What flights does A7E9E7 operate?
Mode-S A7E9E7 has broadcast 7 distinct callsigns, including JIA5508, JIA5354, JIA5590, JIA5517, JIA5480.