sensors Mode-S transponder

A966B2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N70465 · DE HAVILLAND DHC-6 Twin Otter

Hex
A966B2
Octal
52263262
Decimal
11,101,874
Country
US
Tail
N70465
Type
DHC6
No current signal · last broadcast 19h ago
Flights observed
2
Distinct callsigns
1
Country
US
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S A966B2.

Country allocation

The ICAO 24-bit address A966B2 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 1 distinct

Callsign Airline Flights Last seen
CONGO65 - 2 2026-04-14

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-14 CONGO65 - Apr 14, 10:35 UTCApr 14, 11:05 UTC30m
2026-04-14 CONGO65 COS → COS Apr 14, 10:10 UTCApr 14, 10:25 UTC15m

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 N70465 page for operator, model, and routing details .

Mode-S A966B2 frequently asked

What is Mode-S code A966B2?
A966B2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N70465.
Where is Mode-S A966B2 registered?
Mode-S code A966B2 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 A966B2 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A966B2, octal 52263262, decimal 11,101,874.
What flights does A966B2 operate?
Mode-S A966B2 has broadcast 1 distinct callsign, including CONGO65.