sensors Mode-S transponder

ADBDB8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N985AA · operated by SCOTT SYKES

Hex
ADBDB8
Octal
53336670
Decimal
11,386,296
Country
US
Tail
N985AA
No current signal · last broadcast 1h ago
Flights observed
15
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ADBDB8.

Country allocation

The ICAO 24-bit address ADBDB8 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
N985AA - 15 2026-04-18

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-18 N985AA - Apr 18, 19:00 UTCApr 18, 20:00 UTC1h 0m
2026-04-18 N985AA - Apr 18, 01:30 UTCApr 18, 03:20 UTC1h 50m
2026-04-17 N985AA - Apr 17, 23:25 UTCApr 17, 23:55 UTC30m
2026-04-17 N985AA - Apr 17, 22:35 UTCApr 17, 23:20 UTC45m
2026-04-17 N985AA - Apr 17, 19:25 UTCApr 17, 20:05 UTC40m
2026-04-17 N985AA - Apr 17, 01:20 UTCApr 17, 02:00 UTC40m
2026-04-17 N985AA - Apr 17, 00:20 UTCApr 17, 01:15 UTC55m
2026-04-16 N985AA - Apr 16, 22:15 UTCApr 16, 22:34 UTC20m
2026-04-16 N985AA - Apr 16, 17:54 UTCApr 16, 18:50 UTC55m
2026-04-16 N985AA - Apr 16, 15:15 UTCApr 16, 16:00 UTC45m
2026-04-16 N985AA - Apr 16, 14:25 UTCApr 16, 15:10 UTC45m
2026-04-15 N985AA - Apr 15, 19:05 UTCApr 15, 19:10 UTC5m
2026-04-15 N985AA - Apr 15, 18:00 UTCApr 15, 19:00 UTC1h 0m
2026-04-14 N985AA - Apr 14, 22:55 UTCApr 14, 23:15 UTC20m
2026-04-14 N985AA - Apr 14, 22:00 UTCApr 14, 22:50 UTC50m

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 N985AA page for operator, model, and routing details .

Mode-S ADBDB8 frequently asked

What is Mode-S code ADBDB8?
ADBDB8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N985AA.
Where is Mode-S ADBDB8 registered?
Mode-S code ADBDB8 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 ADBDB8 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADBDB8, octal 53336670, decimal 11,386,296.
What flights does ADBDB8 operate?
Mode-S ADBDB8 has broadcast 1 distinct callsign, including N985AA.