sensors Mode-S transponder

A87907

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N645NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A87907
Octal
52074407
Decimal
11,041,031
Country
US
Tail
N645NN
Type
CRJ9
No current signal · last broadcast 1d ago
Flights observed
10
Distinct callsigns
5
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A87907.

Country allocation

The ICAO 24-bit address A87907 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 5 distinct

Callsign Airline Flights Last seen
JIA5587 - 3 2026-04-13
JIA5195 - 3 2026-04-13
JIA5232 - 2 2026-04-13
JIA5518 PSA Airlines 1 2026-04-12
JIA5304 PSA Airlines 1 2026-04-12

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 JIA5232 - Apr 13, 23:30 UTCApr 13, 23:40 UTC10m
2026-04-13 JIA5232 - Apr 13, 20:52 UTCApr 13, 22:27 UTC1h 35m
2026-04-13 JIA5195 - Apr 13, 18:07 UTCApr 13, 19:18 UTC1h 11m
2026-04-13 JIA5195 - Apr 13, 16:15 UTCApr 13, 17:00 UTC45m
2026-04-13 JIA5195 - Apr 13, 15:55 UTCApr 13, 16:15 UTC20m
2026-04-13 JIA5587 - Apr 13, 13:41 UTCApr 13, 14:25 UTC44m
2026-04-13 JIA5587 - Apr 13, 12:20 UTCApr 13, 12:45 UTC25m
2026-04-13 JIA5587 - Apr 13, 12:00 UTCApr 13, 12:15 UTC15m
2026-04-12 JIA5518 DCA → GSP Apr 12, 23:55 UTCApr 13, 00:15 UTC20m
2026-04-12 JIA5304 CLT → MDT Apr 12, 17:15 UTCApr 12, 18:00 UTC45m

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 N645NN page for operator, model, and routing details .

Mode-S A87907 frequently asked

What is Mode-S code A87907?
A87907 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N645NN.
Where is Mode-S A87907 registered?
Mode-S code A87907 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 A87907 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 A87907, octal 52074407, decimal 11,041,031.
What flights does A87907 operate?
Mode-S A87907 has broadcast 5 distinct callsigns, including JIA5587, JIA5195, JIA5232, JIA5518, JIA5304.