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sensors Mode-S transponder

AD9D31

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9766Z · DE HAVILLAND DHC-2 Beaver · operated by KENMORE AIR HARBOR LLC

Hex
AD9D31
Octal
53316461
Decimal
11,377,969
Country
US
Tail
N9766Z
Type
DHC2
No current signal · last broadcast 2h ago
Flights observed
184
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AD9D31.

Country allocation

The ICAO 24-bit address AD9D31 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
N9766Z - 184 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-27 N9766Z LPS → KEH Jun 27, 01:35 UTCJun 27, 02:14 UTC40m
2026-06-27 N9766Z - Jun 27, 00:05 UTCJun 27, 01:00 UTC55m
2026-06-26 N9766Z - Jun 26, 15:39 UTCJun 26, 20:10 UTC4h 30m
2026-06-24 N9766Z - Jun 24, 21:44 UTCJun 24, 22:49 UTC1h 5m
2026-06-24 N9766Z - Jun 24, 15:35 UTCJun 24, 16:14 UTC40m
2026-06-23 N9766Z - Jun 23, 23:59 UTCJun 24, 01:34 UTC1h 35m
2026-06-23 N9766Z - Jun 23, 20:49 UTCJun 23, 22:34 UTC1h 45m
2026-06-23 N9766Z - Jun 23, 19:10 UTCJun 23, 19:50 UTC40m
2026-06-23 N9766Z - Jun 23, 17:54 UTCJun 23, 18:39 UTC45m
2026-06-22 N9766Z - Jun 22, 22:49 UTCJun 22, 23:55 UTC1h 5m
2026-06-22 N9766Z - Jun 22, 20:00 UTCJun 22, 22:10 UTC2h 10m
2026-06-22 N9766Z - Jun 22, 18:09 UTCJun 22, 19:19 UTC1h 10m
2026-06-21 N9766Z KEH → KEH Jun 21, 23:00 UTCJun 21, 23:30 UTC30m
2026-06-21 N9766Z - Jun 21, 22:00 UTCJun 21, 22:24 UTC25m
2026-06-21 N9766Z - Jun 21, 20:59 UTCJun 21, 21:29 UTC30m
2026-06-21 N9766Z - Jun 21, 20:00 UTCJun 21, 20:24 UTC25m
2026-06-21 N9766Z - Jun 21, 18:10 UTCJun 21, 19:24 UTC1h 15m
2026-06-20 N9766Z - Jun 20, 23:39 UTCJun 21, 00:45 UTC1h 5m
2026-06-20 N9766Z KEH → KEH Jun 20, 22:35 UTCJun 20, 22:59 UTC25m
2026-06-20 N9766Z KEH → KEH Jun 20, 19:29 UTCJun 20, 21:25 UTC1h 55m
2026-06-20 N9766Z - Jun 20, 17:39 UTCJun 20, 18:54 UTC1h 15m
2026-06-19 N9766Z - Jun 19, 23:59 UTCJun 20, 01:55 UTC1h 55m
2026-06-19 N9766Z - Jun 19, 21:04 UTCJun 19, 23:09 UTC2h 5m
2026-06-18 N9766Z - Jun 18, 20:55 UTCJun 18, 22:05 UTC1h 10m
2026-06-18 N9766Z - Jun 18, 18:10 UTCJun 18, 20:15 UTC2h 5m
2026-06-18 N9766Z - Jun 18, 00:30 UTCJun 18, 01:05 UTC35m
2026-06-17 N9766Z - Jun 17, 20:50 UTCJun 17, 21:30 UTC40m
2026-06-17 N9766Z - Jun 17, 18:35 UTCJun 17, 19:40 UTC1h 5m
2026-06-16 N9766Z - Jun 16, 22:35 UTCJun 16, 23:00 UTC25m
2026-06-16 N9766Z CKR → KEH Jun 16, 21:10 UTCJun 16, 22:05 UTC55m
2026-06-16 N9766Z - Jun 16, 19:19 UTCJun 16, 20:15 UTC56m
2026-06-16 N9766Z KEH → KEH Jun 16, 00:05 UTCJun 16, 02:09 UTC2h 5m
2026-06-15 N9766Z - Jun 15, 20:40 UTCJun 15, 22:20 UTC1h 40m
2026-06-15 N9766Z - Jun 15, 01:00 UTCJun 15, 01:40 UTC40m
2026-06-14 N9766Z - Jun 14, 23:44 UTCJun 15, 00:24 UTC40m
2026-06-14 N9766Z - Jun 14, 22:30 UTCJun 14, 23:10 UTC40m
2026-06-14 N9766Z - Jun 14, 21:15 UTCJun 14, 21:45 UTC30m
2026-06-14 N9766Z - Jun 14, 17:30 UTCJun 14, 19:35 UTC2h 5m
2026-06-14 N9766Z - Jun 14, 00:30 UTCJun 14, 00:55 UTC25m
2026-06-13 N9766Z - Jun 13, 23:30 UTCJun 13, 23:55 UTC25m
2026-06-13 N9766Z KEH → KEH Jun 13, 22:25 UTCJun 13, 22:50 UTC25m
2026-06-13 N9766Z - Jun 13, 19:40 UTCJun 13, 21:40 UTC2h 0m
2026-06-13 N9766Z - Jun 13, 17:40 UTCJun 13, 18:50 UTC1h 10m
2026-06-13 N9766Z - Jun 13, 00:40 UTCJun 13, 01:05 UTC25m
2026-06-12 N9766Z - Jun 12, 22:25 UTCJun 12, 23:25 UTC1h 0m
2026-06-11 N9766Z - Jun 11, 19:10 UTCJun 11, 20:20 UTC1h 10m
2026-06-11 N9766Z - Jun 11, 16:40 UTCJun 11, 16:50 UTC10m
2026-06-11 N9766Z - Jun 11, 15:30 UTCJun 11, 16:10 UTC40m
2026-06-10 N9766Z KEH → KEH Jun 10, 21:10 UTCJun 10, 23:00 UTC1h 50m
2026-06-10 N9766Z - Jun 10, 18:05 UTCJun 10, 19:40 UTC1h 35m

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 N9766Z page for operator, model, and routing details .

Mode-S AD9D31 frequently asked

What is Mode-S code AD9D31?
AD9D31 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9766Z.
Where is Mode-S AD9D31 registered?
Mode-S code AD9D31 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 AD9D31 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD9D31, octal 53316461, decimal 11,377,969.
What flights does AD9D31 operate?
Mode-S AD9D31 has broadcast 1 distinct callsign, including N9766Z.