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sensors Mode-S transponder

A9D390

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N732MD · CESSNA 208 Caravan · operated by UMB BANK NA TRUSTEE

Hex
A9D390
Octal
52351620
Decimal
11,129,744
Country
US
Tail
N732MD
Type
C208
Transponder active on ground
Flights observed
217
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A9D390.

Country allocation

The ICAO 24-bit address A9D390 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
TUD2MD - 217 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TUD2MD - Jul 14, 01:50 UTCJul 14, 02:00 UTC10m
2026-07-14 TUD2MD - Jul 14, 00:35 UTCJul 14, 01:40 UTC1h 5m
2026-07-13 TUD2MD - Jul 13, 22:25 UTCJul 13, 23:40 UTC1h 15m
2026-07-13 TUD2MD - Jul 13, 20:15 UTCJul 13, 21:45 UTC1h 30m
2026-07-13 TUD2MD - Jul 13, 19:10 UTCJul 13, 19:45 UTC35m
2026-07-13 TUD2MD - Jul 13, 18:10 UTCJul 13, 18:30 UTC20m
2026-07-13 TUD2MD - Jul 13, 16:00 UTCJul 13, 17:30 UTC1h 30m
2026-07-13 TUD2MD - Jul 13, 02:35 UTCJul 13, 03:01 UTC25m
2026-07-13 TUD2MD - Jul 13, 01:40 UTCJul 13, 02:05 UTC25m
2026-07-12 TUD2MD - Jul 12, 23:55 UTCJul 13, 01:05 UTC1h 10m
2026-07-12 TUD2MD - Jul 12, 22:10 UTCJul 12, 23:25 UTC1h 15m
2026-07-12 TUD2MD - Jul 12, 20:15 UTCJul 12, 21:30 UTC1h 15m
2026-07-12 TUD2MD - Jul 12, 18:40 UTCJul 12, 19:40 UTC1h 0m
2026-07-12 TUD2MD - Jul 12, 01:55 UTCJul 12, 03:20 UTC1h 25m
2026-07-12 TUD2MD - Jul 12, 00:05 UTCJul 12, 01:20 UTC1h 15m
2026-07-11 TUD2MD - Jul 11, 23:00 UTCJul 11, 23:25 UTC25m
2026-07-11 TUD2MD ANC → SXQ Jul 11, 21:45 UTCJul 11, 22:10 UTC25m
2026-07-11 TUD2MD - Jul 11, 19:55 UTCJul 11, 21:15 UTC1h 20m
2026-07-11 TUD2MD - Jul 11, 18:15 UTCJul 11, 19:30 UTC1h 15m
2026-07-11 TUD2MD - Jul 11, 02:50 UTCJul 11, 03:15 UTC25m
2026-07-11 TUD2MD - Jul 11, 01:50 UTCJul 11, 02:15 UTC25m
2026-07-11 TUD2MD - Jul 11, 00:10 UTCJul 11, 01:15 UTC1h 5m
2026-07-10 TUD2MD - Jul 10, 23:20 UTCJul 10, 23:45 UTC25m
2026-07-10 TUD2MD ANC → SXQ Jul 10, 22:10 UTCJul 10, 22:35 UTC25m
2026-07-10 TUD2MD - Jul 10, 16:20 UTCJul 10, 17:35 UTC1h 15m
2026-07-10 TUD2MD - Jul 10, 01:40 UTCJul 10, 02:45 UTC1h 5m
2026-07-10 TUD2MD - Jul 10, 00:10 UTCJul 10, 01:20 UTC1h 10m
2026-07-09 TUD2MD - Jul 9, 22:40 UTCJul 9, 23:50 UTC1h 10m
2026-07-09 TUD2MD - Jul 9, 21:20 UTCJul 9, 22:05 UTC45m
2026-07-09 TUD2MD - Jul 9, 20:10 UTCJul 9, 20:35 UTC25m
2026-07-09 TUD2MD - Jul 9, 16:10 UTCJul 9, 17:15 UTC1h 5m
2026-07-09 TUD2MD - Jul 9, 01:55 UTCJul 9, 03:15 UTC1h 20m
2026-07-09 TUD2MD - Jul 9, 00:35 UTCJul 9, 01:40 UTC1h 5m
2026-07-08 TUD2MD - Jul 8, 23:05 UTCJul 8, 23:45 UTC40m
2026-07-08 TUD2MD - Jul 8, 22:10 UTCJul 8, 22:35 UTC25m
2026-07-08 TUD2MD - Jul 8, 21:10 UTCJul 8, 21:45 UTC35m
2026-07-08 TUD2MD - Jul 8, 20:10 UTCJul 8, 20:35 UTC25m
2026-07-08 TUD2MD - Jul 8, 18:20 UTCJul 8, 19:40 UTC1h 20m
2026-07-08 TUD2MD - Jul 8, 17:00 UTCJul 8, 17:25 UTC25m
2026-07-08 TUD2MD - Jul 8, 15:40 UTCJul 8, 16:10 UTC30m
2026-07-08 TUD2MD - Jul 8, 01:35 UTCJul 8, 03:05 UTC1h 30m
2026-07-07 TUD2MD - Jul 7, 23:50 UTCJul 8, 01:05 UTC1h 15m
2026-07-07 TUD2MD - Jul 7, 22:55 UTCJul 7, 23:20 UTC25m
2026-07-07 TUD2MD - Jul 7, 20:05 UTCJul 7, 20:30 UTC25m
2026-07-07 TUD2MD - Jul 7, 19:00 UTCJul 7, 19:30 UTC30m
2026-07-07 TUD2MD - Jul 7, 18:00 UTCJul 7, 18:25 UTC25m
2026-07-07 TUD2MD - Jul 7, 16:10 UTCJul 7, 17:30 UTC1h 20m
2026-07-07 TUD2MD - Jul 7, 01:50 UTCJul 7, 03:10 UTC1h 20m
2026-07-07 TUD2MD - Jul 7, 00:00 UTCJul 7, 01:10 UTC1h 10m
2026-07-06 TUD2MD - Jul 6, 22:05 UTCJul 6, 23:30 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 N732MD page for operator, model, and routing details .

Mode-S A9D390 frequently asked

What is Mode-S code A9D390?
A9D390 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N732MD.
Where is Mode-S A9D390 registered?
Mode-S code A9D390 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 A9D390 broadcasting right now?
Mode-S A9D390 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9D390, octal 52351620, decimal 11,129,744.
What flights does A9D390 operate?
Mode-S A9D390 has broadcast 1 distinct callsign, including TUD2MD.