Apparatus

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sensors Mode-S transponder

A6669D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N511R · operated by A&F AVIATION SERVICES LLC

Hex
A6669D
Octal
51463235
Decimal
10,905,245
Country
US
Tail
N511R
Type
RV12
Broadcasting now · callsign N511R · 6,350 ft
Flights observed
53
Distinct callsigns
1
Country
US
Last broadcast
53m ago

Current position

A6669D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A6669D 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
N511R - 53 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N511R - Jul 18, 01:45 UTCJul 18, 03:15 UTC1h 31m
2026-07-17 N511R - Jul 17, 15:49 UTCJul 17, 16:49 UTC1h 0m
2026-07-17 N511R - Jul 17, 13:20 UTCJul 17, 13:45 UTC25m
2026-07-16 N511R - Jul 16, 20:55 UTCJul 16, 21:50 UTC55m
2026-07-16 N511R - Jul 16, 17:49 UTCJul 16, 18:55 UTC1h 5m
2026-07-16 N511R - Jul 16, 14:20 UTCJul 16, 16:25 UTC2h 5m
2026-07-16 N511R - Jul 16, 00:50 UTCJul 16, 01:00 UTC10m
2026-07-15 N511R - Jul 15, 23:20 UTCJul 16, 00:20 UTC1h 0m
2026-07-15 N511R - Jul 15, 17:30 UTCJul 15, 18:25 UTC55m
2026-06-17 N511R PDK → LZU Jun 17, 20:25 UTCJun 17, 20:40 UTC15m
2026-06-17 N511R - Jun 17, 19:30 UTCJun 17, 19:50 UTC20m
2026-06-17 N511R - Jun 17, 16:50 UTCJun 17, 17:00 UTC10m
2026-06-16 N511R - Jun 16, 18:05 UTCJun 16, 19:15 UTC1h 10m
2026-06-16 N511R LZU → LZU Jun 16, 12:50 UTCJun 16, 14:15 UTC1h 25m
2026-06-15 N511R - Jun 15, 20:00 UTCJun 15, 20:59 UTC1h 0m
2026-06-15 N511R - Jun 15, 17:40 UTCJun 15, 18:50 UTC1h 10m
2026-06-13 N511R - Jun 13, 18:05 UTCJun 13, 18:20 UTC15m
2026-06-13 N511R - Jun 13, 15:35 UTCJun 13, 16:45 UTC1h 10m
2026-06-12 N511R LZU → LZU Jun 12, 22:10 UTCJun 12, 23:15 UTC1h 5m
2026-06-12 N511R - Jun 12, 21:15 UTCJun 12, 21:25 UTC10m
2026-06-12 N511R - Jun 12, 20:05 UTCJun 12, 20:30 UTC25m
2026-06-12 N511R - Jun 12, 17:45 UTCJun 12, 18:55 UTC1h 10m
2026-06-11 N511R - Jun 11, 19:15 UTCJun 11, 21:15 UTC2h 0m
2026-06-11 N511R - Jun 11, 16:30 UTCJun 11, 16:40 UTC10m
2026-06-11 N511R - Jun 11, 14:30 UTCJun 11, 15:55 UTC1h 25m
2026-06-11 N511R - Jun 11, 13:10 UTCJun 11, 13:45 UTC35m
2026-06-10 N511R LZU → LZU Jun 10, 22:20 UTCJun 10, 22:40 UTC20m
2026-06-10 N511R - Jun 10, 17:00 UTCJun 10, 19:00 UTC2h 0m
2026-06-06 N511R - Jun 6, 17:05 UTCJun 6, 17:49 UTC45m
2026-06-05 N511R - Jun 5, 21:50 UTCJun 5, 22:30 UTC40m
2026-06-05 N511R - Jun 5, 18:05 UTCJun 5, 19:20 UTC1h 15m
2026-06-05 N511R - Jun 5, 16:15 UTCJun 5, 17:10 UTC55m
2026-06-05 N511R LZU → LZU Jun 5, 12:40 UTCJun 5, 14:05 UTC1h 25m
2026-06-04 N511R - Jun 4, 17:35 UTCJun 4, 19:00 UTC1h 25m
2026-06-04 N511R - Jun 4, 14:45 UTCJun 4, 16:10 UTC1h 25m
2026-06-03 N511R - Jun 3, 19:55 UTCJun 3, 21:15 UTC1h 20m
2026-06-03 N511R - Jun 3, 15:05 UTCJun 3, 16:15 UTC1h 10m
2026-06-03 N511R LZU → LZU Jun 3, 12:35 UTCJun 3, 14:00 UTC1h 25m
2026-06-02 N511R - Jun 2, 17:40 UTCJun 2, 18:35 UTC55m
2026-06-02 N511R - Jun 2, 15:40 UTCJun 2, 16:45 UTC1h 5m
2026-06-02 N511R - Jun 2, 12:55 UTCJun 2, 14:25 UTC1h 30m
2026-06-01 N511R - Jun 1, 20:50 UTCJun 1, 21:10 UTC20m
2026-06-01 N511R - Jun 1, 19:05 UTCJun 1, 19:20 UTC15m
2026-05-30 N511R - May 30, 21:05 UTCMay 30, 21:30 UTC25m
2026-05-30 N511R - May 30, 20:15 UTCMay 30, 20:25 UTC10m
2026-05-29 N511R - May 29, 20:00 UTCMay 29, 20:45 UTC45m
2026-05-28 N511R - May 28, 21:25 UTCMay 28, 22:35 UTC1h 10m
2026-05-28 N511R - May 28, 19:30 UTCMay 28, 19:40 UTC10m
2026-05-28 N511R - May 28, 17:55 UTCMay 28, 18:40 UTC45m
2026-05-27 N511R - May 27, 21:55 UTCMay 27, 22:55 UTC1h 0m

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 N511R page for operator, model, and routing details .

Mode-S A6669D frequently asked

What is Mode-S code A6669D?
A6669D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N511R.
Where is Mode-S A6669D registered?
Mode-S code A6669D 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 A6669D broadcasting right now?
Yes. Mode-S A6669D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6669D, octal 51463235, decimal 10,905,245.
What flights does A6669D operate?
Mode-S A6669D has broadcast 1 distinct callsign, including N511R.