sensors Mode-S transponder

A3A9B6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N335PQ · BOMBARDIER Regional Jet CRJ-900 · operated by DELTA AIR LINES INC

Hex
A3A9B6
Octal
50724666
Decimal
10,725,814
Country
US
Tail
N335PQ
Type
CRJ9
Broadcasting now · callsign EDV4914 · 32,000 ft
Flights observed
11
Distinct callsigns
5
Country
US
Last broadcast
1d ago

Current position

A3A9B6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A3A9B6 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
EDV4974 - 4 2026-04-13
EDV5464 - 3 2026-04-13
EDV4909 - 2 2026-04-12
EDV5326 - 1 2026-04-13
EDV5041 - 1 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-13 EDV5041 - Apr 13, 21:03 UTCApr 13, 22:40 UTC1h 37m
2026-04-13 EDV4974 OKC → MSP Apr 13, 18:14 UTCApr 13, 20:01 UTC1h 47m
2026-04-13 EDV4974 - Apr 13, 16:15 UTCApr 13, 17:10 UTC55m
2026-04-13 EDV4974 - Apr 13, 15:50 UTCApr 13, 17:10 UTC1h 20m
2026-04-13 EDV4974 - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m
2026-04-13 EDV5464 - Apr 13, 12:20 UTCApr 13, 13:55 UTC1h 35m
2026-04-13 EDV5464 - Apr 13, 11:55 UTCApr 13, 13:55 UTC2h 0m
2026-04-13 EDV5464 - Apr 13, 11:22 UTCApr 13, 13:58 UTC2h 36m
2026-04-13 EDV5326 - Apr 13, 02:10 UTCApr 13, 03:00 UTC50m
2026-04-12 EDV4909 - Apr 12, 23:55 UTCApr 13, 00:20 UTC25m
2026-04-12 EDV4909 - Apr 12, 18:55 UTCApr 12, 20:15 UTC1h 20m

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 N335PQ page for operator, model, and routing details .

Mode-S A3A9B6 frequently asked

What is Mode-S code A3A9B6?
A3A9B6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N335PQ.
Where is Mode-S A3A9B6 registered?
Mode-S code A3A9B6 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 A3A9B6 broadcasting right now?
Yes. Mode-S A3A9B6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A9B6, octal 50724666, decimal 10,725,814.
What flights does A3A9B6 operate?
Mode-S A3A9B6 has broadcast 5 distinct callsigns, including EDV4974, EDV5464, EDV4909, EDV5326, EDV5041.