sensors Mode-S transponder

ACB966

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N919PG · operated by CHRISTOPHER GILLAM

Hex
ACB966
Octal
53134546
Decimal
11,319,654
Country
US
Tail
N919PG
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ACB966.

Country allocation

The ICAO 24-bit address ACB966 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
N929PG - 5 2026-04-26

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-26 N929PG - Apr 26, 18:20 UTCApr 26, 18:50 UTC30m
2026-04-26 N929PG ABE → LNS Apr 26, 16:55 UTCApr 26, 17:40 UTC45m
2026-04-25 N929PG - Apr 25, 17:40 UTCApr 25, 18:50 UTC1h 10m
2026-04-24 N929PG - Apr 24, 19:15 UTCApr 24, 20:35 UTC1h 20m
2026-04-17 N929PG ABE → ABE Apr 17, 14:20 UTCApr 17, 14:55 UTC34m

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 N919PG page for operator, model, and routing details .

Mode-S ACB966 frequently asked

What is Mode-S code ACB966?
ACB966 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N919PG.
Where is Mode-S ACB966 registered?
Mode-S code ACB966 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 ACB966 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 ACB966, octal 53134546, decimal 11,319,654.
What flights does ACB966 operate?
Mode-S ACB966 has broadcast 1 distinct callsign, including N929PG.