sensors Mode-S transponder

A2A11F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N269HD · operated by CANCELLED/NOT ASSIGNED

Hex
A2A11F
Octal
50520437
Decimal
10,658,079
Country
US
Tail
N269HD
No current signal · last broadcast 5h ago
Flights observed
10
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A2A11F.

Country allocation

The ICAO 24-bit address A2A11F 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
6WHED - 10 2026-07-02

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-07-02 6WHED - Jul 2, 12:10 UTCJul 2, 12:30 UTC20m
2026-07-02 6WHED - Jul 2, 11:15 UTCJul 2, 11:30 UTC15m
2026-06-30 6WHED - Jun 30, 18:05 UTCJun 30, 18:40 UTC35m
2026-06-30 6WHED - Jun 30, 11:55 UTCJun 30, 12:25 UTC30m
2026-06-25 6WHED - Jun 25, 12:54 UTCJun 25, 13:20 UTC25m
2026-06-25 6WHED - Jun 25, 10:39 UTCJun 25, 11:15 UTC35m
2026-06-24 6WHED - Jun 24, 18:25 UTCJun 24, 18:50 UTC25m
2026-06-24 6WHED - Jun 24, 11:14 UTCJun 24, 11:45 UTC30m
2026-06-19 6WHED - Jun 19, 12:49 UTCJun 19, 13:20 UTC30m
2026-05-06 6WHED - May 6, 10:35 UTCMay 6, 10:50 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 N269HD page for operator, model, and routing details .

Mode-S A2A11F frequently asked

What is Mode-S code A2A11F?
A2A11F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N269HD.
Where is Mode-S A2A11F registered?
Mode-S code A2A11F 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 A2A11F broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2A11F, octal 50520437, decimal 10,658,079.
What flights does A2A11F operate?
Mode-S A2A11F has broadcast 1 distinct callsign, including 6WHED.