sensors Mode-S transponder

A716EE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N556NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A716EE
Octal
51613356
Decimal
10,950,382
Country
US
Tail
N556NN
Type
CRJ9
No current signal · last broadcast 20h ago
Flights observed
14
Distinct callsigns
7
Country
US
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S A716EE.

Country allocation

The ICAO 24-bit address A716EE 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
JIA5570 - 4 2026-04-13
JIA5041 PSA Airlines 3 2026-04-13
JIA5055 - 2 2026-04-13
JIA5026 - 2 2026-04-13
JIA5493 PSA Airlines 1 2026-04-14
JIA5421 - 1 2026-04-12
JIA5313 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 JIA5493 PWM → PHL Apr 14, 10:05 UTCApr 14, 11:05 UTC1h 0m
2026-04-13 JIA5313 - Apr 13, 23:05 UTCApr 13, 23:40 UTC35m
2026-04-13 JIA5026 PSQ → ATL Apr 13, 20:10 UTCApr 13, 22:00 UTC1h 50m
2026-04-13 JIA5026 PSQ → ATL Apr 13, 20:10 UTCApr 13, 21:50 UTC1h 40m
2026-04-13 JIA5055 - Apr 13, 17:28 UTCApr 13, 19:00 UTC1h 32m
2026-04-13 JIA5055 - Apr 13, 17:28 UTCApr 13, 18:39 UTC1h 11m
2026-04-13 JIA5041 PHL → SDF Apr 13, 15:50 UTCApr 13, 16:10 UTC20m
2026-04-13 JIA5041 PHL → SDF Apr 13, 14:56 UTCApr 13, 16:31 UTC1h 35m
2026-04-13 JIA5041 PHL → SDF Apr 13, 14:56 UTCApr 13, 16:31 UTC1h 35m
2026-04-13 JIA5570 - Apr 13, 12:20 UTCApr 13, 13:00 UTC40m
2026-04-13 JIA5570 - Apr 13, 11:55 UTCApr 13, 13:00 UTC1h 5m
2026-04-13 JIA5570 - Apr 13, 11:47 UTCApr 13, 13:22 UTC1h 35m
2026-04-13 JIA5570 - Apr 13, 11:47 UTCApr 13, 13:22 UTC1h 35m
2026-04-12 JIA5421 - Apr 12, 18:05 UTCApr 12, 20:00 UTC1h 55m

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 N556NN page for operator, model, and routing details .

Mode-S A716EE frequently asked

What is Mode-S code A716EE?
A716EE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N556NN.
Where is Mode-S A716EE registered?
Mode-S code A716EE 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 A716EE broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A716EE, octal 51613356, decimal 10,950,382.
What flights does A716EE operate?
Mode-S A716EE has broadcast 7 distinct callsigns, including JIA5570, JIA5041, JIA5055, JIA5026, JIA5493.