sensors Mode-S transponder

AA9BBF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N783AV · BOEING 787-8 Dreamliner · operated by BANK OF UTAH TRUSTEE

Hex
AA9BBF
Octal
52515677
Decimal
11,180,991
Country
US
Tail
N783AV
Type
B788
No current signal · last broadcast 17h ago
Flights observed
8
Distinct callsigns
3
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S AA9BBF.

Country allocation

The ICAO 24-bit address AA9BBF 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 3 distinct

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 AVA016 - Apr 14, 05:20 UTCApr 14, 05:30 UTC10m
2026-04-13 AVA017 MAD → MDE Apr 13, 22:40 UTCApr 13, 23:10 UTC30m
2026-04-13 AVA017 MAD → MDE Apr 13, 16:30 UTCApr 13, 17:10 UTC40m
2026-04-13 AVA017 MAD → MDE Apr 13, 15:50 UTCApr 13, 17:10 UTC1h 20m
2026-04-13 AVA017 MAD → MDE Apr 13, 15:15 UTCApr 13, 16:10 UTC55m
2026-04-13 AVA010 BOG → MAD Apr 13, 11:55 UTCApr 13, 12:20 UTC25m
2026-04-13 AVA010 BOG → MAD Apr 13, 11:10 UTCApr 13, 12:15 UTC1h 5m
2026-04-13 AVA010 BOG → MAD Apr 13, 04:25 UTCApr 13, 05:35 UTC1h 10m

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 N783AV page for operator, model, and routing details .

Mode-S AA9BBF frequently asked

What is Mode-S code AA9BBF?
AA9BBF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N783AV.
Where is Mode-S AA9BBF registered?
Mode-S code AA9BBF 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 AA9BBF broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9BBF, octal 52515677, decimal 11,180,991.
What flights does AA9BBF operate?
Mode-S AA9BBF has broadcast 3 distinct callsigns, including AVA017, AVA010, AVA016.