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sensors Mode-S transponder

AD9577

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9744T · DE HAVILLAND DHC-2 Beaver · operated by KENMORE AIR HARBOR LLC

Hex
AD9577
Octal
53312567
Decimal
11,375,991
Country
US
Tail
N9744T
Type
DHC2
No current signal · last broadcast 1h ago
Flights observed
231
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AD9577.

Country allocation

The ICAO 24-bit address AD9577 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
N9744T - 231 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N9744T - Jul 14, 17:45 UTCJul 14, 18:45 UTC1h 0m
2026-07-14 N9744T - Jul 14, 16:15 UTCJul 14, 16:45 UTC30m
2026-07-14 N9744T - Jul 14, 14:35 UTCJul 14, 15:35 UTC1h 0m
2026-07-14 N9744T - Jul 14, 01:25 UTCJul 14, 01:35 UTC10m
2026-07-13 N9744T - Jul 13, 23:20 UTCJul 14, 01:05 UTC1h 45m
2026-07-13 N9744T - Jul 13, 21:55 UTCJul 13, 22:30 UTC35m
2026-07-13 N9744T - Jul 13, 20:05 UTCJul 13, 21:05 UTC1h 0m
2026-07-13 N9744T - Jul 13, 18:20 UTCJul 13, 19:25 UTC1h 5m
2026-07-13 N9744T - Jul 13, 15:05 UTCJul 13, 16:45 UTC1h 40m
2026-07-13 N9744T - Jul 13, 14:40 UTCJul 13, 14:45 UTC5m
2026-07-13 N9744T - Jul 13, 00:55 UTCJul 13, 01:35 UTC40m
2026-07-12 N9744T - Jul 12, 23:45 UTCJul 13, 00:25 UTC40m
2026-07-12 N9744T - Jul 12, 20:45 UTCJul 12, 20:55 UTC10m
2026-07-12 N9744T - Jul 12, 18:45 UTCJul 12, 20:30 UTC1h 45m
2026-07-12 N9744T - Jul 12, 17:25 UTCJul 12, 18:05 UTC40m
2026-07-12 N9744T - Jul 12, 16:10 UTCJul 12, 17:01 UTC50m
2026-07-12 N9744T ZNA → KEH Jul 12, 00:05 UTCJul 12, 01:05 UTC1h 0m
2026-07-11 N9744T - Jul 11, 21:55 UTCJul 11, 22:25 UTC30m
2026-07-11 N9744T - Jul 11, 21:00 UTCJul 11, 21:35 UTC35m
2026-07-11 N9744T KEH → LKE Jul 11, 20:25 UTCJul 11, 20:35 UTC10m
2026-07-11 N9744T - Jul 11, 17:30 UTCJul 11, 18:05 UTC35m
2026-07-11 N9744T - Jul 11, 15:40 UTCJul 11, 16:15 UTC35m
2026-07-10 N9744T - Jul 10, 20:05 UTCJul 10, 20:15 UTC10m
2026-07-10 N9744T - Jul 10, 19:15 UTCJul 10, 19:50 UTC35m
2026-07-10 N9744T LPS → YWH Jul 10, 18:30 UTCJul 10, 18:50 UTC20m
2026-07-10 N9744T - Jul 10, 17:00 UTCJul 10, 17:10 UTC10m
2026-07-10 N9744T - Jul 10, 15:40 UTCJul 10, 16:25 UTC45m
2026-07-09 N9744T - Jul 9, 23:25 UTCJul 10, 00:25 UTC1h 0m
2026-07-09 N9744T - Jul 9, 22:15 UTCJul 9, 23:00 UTC45m
2026-07-09 N9744T - Jul 9, 20:00 UTCJul 9, 21:15 UTC1h 15m
2026-07-09 N9744T - Jul 9, 18:05 UTCJul 9, 19:05 UTC1h 0m
2026-07-09 N9744T - Jul 9, 00:55 UTCJul 9, 01:40 UTC45m
2026-07-08 N9744T - Jul 8, 21:10 UTCJul 8, 21:45 UTC35m
2026-07-08 N9744T - Jul 8, 20:30 UTCJul 8, 20:45 UTC15m
2026-07-08 N9744T - Jul 8, 17:00 UTCJul 8, 17:15 UTC15m
2026-07-08 N9744T - Jul 8, 15:30 UTCJul 8, 16:15 UTC45m
2026-07-07 N9744T - Jul 7, 23:20 UTCJul 8, 00:20 UTC1h 0m
2026-07-07 N9744T - Jul 7, 20:00 UTCJul 7, 22:30 UTC2h 30m
2026-07-07 N9744T - Jul 7, 18:20 UTCJul 7, 19:15 UTC55m
2026-07-06 N9744T - Jul 6, 22:05 UTCJul 6, 22:15 UTC10m
2026-07-06 N9744T - Jul 6, 21:30 UTCJul 6, 21:50 UTC20m
2026-07-06 N9744T - Jul 6, 20:20 UTCJul 6, 20:35 UTC15m
2026-07-06 N9744T - Jul 6, 18:40 UTCJul 6, 19:15 UTC35m
2026-07-06 N9744T - Jul 6, 17:10 UTCJul 6, 17:45 UTC35m
2026-07-06 N9744T - Jul 6, 14:50 UTCJul 6, 16:30 UTC1h 40m
2026-07-06 N9744T - Jul 6, 00:00 UTCJul 6, 01:10 UTC1h 10m
2026-07-05 N9744T - Jul 5, 21:05 UTCJul 5, 22:45 UTC1h 40m
2026-07-05 N9744T - Jul 5, 18:40 UTCJul 5, 20:10 UTC1h 30m
2026-07-05 N9744T - Jul 5, 15:40 UTCJul 5, 17:45 UTC2h 5m
2026-07-04 N9744T - Jul 4, 22:00 UTCJul 4, 23:00 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 N9744T page for operator, model, and routing details .

Mode-S AD9577 frequently asked

What is Mode-S code AD9577?
AD9577 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9744T.
Where is Mode-S AD9577 registered?
Mode-S code AD9577 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 AD9577 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 AD9577, octal 53312567, decimal 11,375,991.
What flights does AD9577 operate?
Mode-S AD9577 has broadcast 1 distinct callsign, including N9744T.