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sensors Mode-S transponder

A66DB3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N513MM · PIPER PA-18 Super Cub · operated by GLACIER PEAK AVIATION LLC

Hex
A66DB3
Octal
51466663
Decimal
10,907,059
Country
US
Tail
N513MM
Type
PA18
No current signal · last broadcast Jul 22, 16:50 UTC
Flights observed
74
Distinct callsigns
1
Country
US
Last broadcast
Jul 22, 16:50 UTC

Last known position

Most recent position reported by Mode-S A66DB3.

Country allocation

The ICAO 24-bit address A66DB3 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
N513MM - 74 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 N513MM RNT → RNT Jul 22, 15:25 UTCJul 22, 16:50 UTC1h 25m
2026-07-21 N513MM - Jul 21, 22:50 UTCJul 22, 00:40 UTC1h 50m
2026-07-21 N513MM RNT → RNT Jul 21, 20:35 UTCJul 21, 21:55 UTC1h 20m
2026-07-20 N513MM - Jul 20, 22:45 UTCJul 21, 00:00 UTC1h 14m
2026-07-20 N513MM - Jul 20, 16:20 UTCJul 20, 17:50 UTC1h 30m
2026-07-19 N513MM - Jul 19, 19:35 UTCJul 19, 20:05 UTC30m
2026-07-19 N513MM - Jul 19, 18:20 UTCJul 19, 18:45 UTC25m
2026-07-18 N513MM - Jul 18, 20:55 UTCJul 18, 22:35 UTC1h 40m
2026-07-18 N513MM - Jul 18, 18:00 UTCJul 18, 18:35 UTC35m
2026-07-17 N513MM - Jul 17, 22:00 UTCJul 17, 23:10 UTC1h 10m
2026-07-17 N513MM - Jul 17, 15:29 UTCJul 17, 17:25 UTC1h 55m
2026-07-15 N513MM - Jul 15, 23:15 UTCJul 16, 00:30 UTC1h 15m
2026-07-15 N513MM - Jul 15, 16:35 UTCJul 15, 18:25 UTC1h 50m
2026-07-12 N513MM - Jul 12, 18:20 UTCJul 12, 19:10 UTC50m
2026-07-12 N513MM - Jul 12, 15:35 UTCJul 12, 16:30 UTC55m
2026-07-12 N513MM - Jul 12, 02:30 UTCJul 12, 03:40 UTC1h 10m
2026-07-11 N513MM - Jul 11, 22:40 UTCJul 11, 23:10 UTC30m
2026-07-11 N513MM - Jul 11, 21:35 UTCJul 11, 22:05 UTC30m
2026-07-08 N513MM - Jul 8, 18:40 UTCJul 8, 20:10 UTC1h 30m
2026-07-08 N513MM - Jul 8, 16:30 UTCJul 8, 17:15 UTC45m
2026-07-06 N513MM - Jul 6, 22:30 UTCJul 7, 00:50 UTC2h 20m
2026-07-05 N513MM RNT → RNT Jul 5, 19:30 UTCJul 5, 20:40 UTC1h 10m
2026-07-05 N513MM RNT → RNT Jul 5, 16:40 UTCJul 5, 17:40 UTC1h 0m
2026-07-02 N513MM - Jul 2, 18:05 UTCJul 2, 19:20 UTC1h 15m
2026-06-30 N513MM - Jun 30, 23:55 UTCJul 1, 01:05 UTC1h 10m
2026-06-29 N513MM - Jun 29, 20:24 UTCJun 29, 20:44 UTC20m
2026-06-29 N513MM - Jun 29, 19:29 UTCJun 29, 19:44 UTC15m
2026-06-25 N513MM - Jun 25, 17:34 UTCJun 25, 18:19 UTC45m
2026-06-25 N513MM - Jun 25, 16:39 UTCJun 25, 16:55 UTC15m
2026-06-25 N513MM RNT → RNT Jun 25, 14:44 UTCJun 25, 15:40 UTC55m
2026-06-24 N513MM - Jun 24, 17:40 UTCJun 24, 18:55 UTC1h 15m
2026-06-24 N513MM - Jun 24, 14:50 UTCJun 24, 16:09 UTC1h 20m
2026-06-23 N513MM - Jun 23, 14:35 UTCJun 23, 15:55 UTC1h 20m
2026-06-21 N513MM - Jun 21, 21:44 UTCJun 21, 22:34 UTC50m
2026-06-21 N513MM - Jun 21, 19:05 UTCJun 21, 19:29 UTC25m
2026-06-19 N513MM RNT → RNT Jun 19, 17:34 UTCJun 19, 18:30 UTC55m
2026-06-18 N513MM RNT → RNT Jun 18, 20:00 UTCJun 18, 20:50 UTC50m
2026-06-17 N513MM - Jun 17, 19:40 UTCJun 17, 20:25 UTC45m
2026-06-17 N513MM - Jun 17, 17:35 UTCJun 17, 18:25 UTC50m
2026-06-17 N513MM - Jun 17, 15:35 UTCJun 17, 16:25 UTC50m
2026-06-15 N513MM - Jun 15, 18:04 UTCJun 15, 19:55 UTC1h 50m
2026-06-15 N513MM - Jun 15, 14:45 UTCJun 15, 15:10 UTC25m
2026-06-12 N513MM - Jun 12, 23:55 UTCJun 13, 01:05 UTC1h 10m
2026-06-12 N513MM - Jun 12, 21:35 UTCJun 12, 22:35 UTC1h 0m
2026-06-12 N513MM RNT → RNT Jun 12, 01:30 UTCJun 12, 02:40 UTC1h 10m
2026-06-11 N513MM - Jun 11, 22:50 UTCJun 11, 23:25 UTC35m
2026-06-10 N513MM - Jun 10, 23:30 UTCJun 11, 00:50 UTC1h 20m
2026-06-10 N513MM - Jun 10, 17:45 UTCJun 10, 18:35 UTC50m
2026-06-05 N513MM - Jun 5, 14:50 UTCJun 5, 15:45 UTC55m
2026-06-03 N513MM - Jun 3, 18:15 UTCJun 3, 19:40 UTC1h 25m

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 N513MM page for operator, model, and routing details .

Mode-S A66DB3 frequently asked

What is Mode-S code A66DB3?
A66DB3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N513MM.
Where is Mode-S A66DB3 registered?
Mode-S code A66DB3 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 A66DB3 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 16:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A66DB3, octal 51466663, decimal 10,907,059.
What flights does A66DB3 operate?
Mode-S A66DB3 has broadcast 1 distinct callsign, including N513MM.