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sensors Mode-S transponder

AA9991

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N782SN · CESSNA 172 Skyhawk · operated by KINGDOM AIR CORPS

Hex
AA9991
Octal
52514621
Decimal
11,180,433
Country
US
Tail
N782SN
Type
C172
No current signal · last broadcast 10h ago
Flights observed
69
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S AA9991.

Country allocation

The ICAO 24-bit address AA9991 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
N782SN - 69 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N782SN - Jul 13, 22:55 UTCJul 13, 23:35 UTC40m
2026-07-13 N782SN - Jul 13, 20:45 UTCJul 13, 21:55 UTC1h 10m
2026-07-13 N782SN - Jul 13, 18:35 UTCJul 13, 18:45 UTC10m
2026-07-11 N782SN - Jul 11, 05:25 UTCJul 11, 05:50 UTC25m
2026-07-11 N782SN - Jul 11, 04:15 UTCJul 11, 04:35 UTC20m
2026-07-11 N782SN - Jul 11, 01:20 UTCJul 11, 02:20 UTC1h 0m
2026-07-09 N782SN - Jul 9, 19:20 UTCJul 9, 21:55 UTC2h 35m
2026-07-09 N782SN - Jul 9, 01:50 UTCJul 9, 02:00 UTC10m
2026-07-08 N782SN - Jul 8, 22:25 UTCJul 9, 00:45 UTC2h 20m
2026-07-08 N782SN - Jul 8, 18:45 UTCJul 8, 20:55 UTC2h 10m
2026-07-07 N782SN - Jul 7, 22:00 UTCJul 7, 23:40 UTC1h 40m
2026-07-06 N782SN - Jul 6, 18:35 UTCJul 6, 19:50 UTC1h 15m
2026-07-02 N782SN - Jul 2, 21:45 UTCJul 2, 22:40 UTC55m
2026-07-02 N782SN - Jul 2, 18:30 UTCJul 2, 20:20 UTC1h 50m
2026-07-01 N782SN - Jul 1, 22:00 UTCJul 2, 00:25 UTC2h 25m
2026-06-30 N782SN - Jun 30, 22:30 UTCJul 1, 01:45 UTC3h 15m
2026-06-30 N782SN - Jun 30, 02:30 UTCJun 30, 05:55 UTC3h 25m
2026-06-26 N782SN - Jun 26, 20:20 UTCJun 26, 23:30 UTC3h 10m
2026-06-26 N782SN - Jun 26, 18:29 UTCJun 26, 19:04 UTC35m
2026-06-25 N782SN - Jun 25, 22:29 UTCJun 25, 22:59 UTC30m
2026-06-24 N782SN - Jun 24, 22:25 UTCJun 24, 23:59 UTC1h 35m
2026-06-24 N782SN - Jun 24, 19:39 UTCJun 24, 21:19 UTC1h 40m
2026-06-24 N782SN - Jun 24, 01:49 UTCJun 24, 02:30 UTC40m
2026-06-23 N782SN - Jun 23, 22:05 UTCJun 24, 00:09 UTC2h 5m
2026-06-23 N782SN - Jun 23, 19:44 UTCJun 23, 20:34 UTC50m
2026-06-23 N782SN - Jun 23, 06:19 UTCJun 23, 06:34 UTC15m
2026-06-23 N782SN - Jun 23, 01:45 UTCJun 23, 02:04 UTC20m
2026-06-22 N782SN - Jun 22, 21:59 UTCJun 23, 01:04 UTC3h 5m
2026-06-22 N782SN - Jun 22, 18:15 UTCJun 22, 19:34 UTC1h 20m
2026-06-20 N782SN - Jun 20, 08:44 UTCJun 20, 09:05 UTC20m
2026-06-20 N782SN - Jun 20, 07:00 UTCJun 20, 07:29 UTC30m
2026-06-20 N782SN - Jun 20, 05:29 UTCJun 20, 06:05 UTC35m
2026-06-19 N782SN - Jun 19, 22:30 UTCJun 19, 23:44 UTC1h 15m
2026-06-19 N782SN - Jun 19, 18:30 UTCJun 19, 19:49 UTC1h 20m
2026-06-18 N782SN - Jun 18, 21:15 UTCJun 18, 22:35 UTC1h 20m
2026-06-18 N782SN - Jun 18, 18:20 UTCJun 18, 20:25 UTC2h 5m
2026-06-17 N782SN - Jun 17, 05:10 UTCJun 17, 05:20 UTC10m
2026-06-16 N782SN - Jun 16, 22:00 UTCJun 17, 01:15 UTC3h 15m
2026-06-16 N782SN - Jun 16, 19:19 UTCJun 16, 20:25 UTC1h 6m
2026-06-15 N782SN - Jun 15, 22:10 UTCJun 16, 00:05 UTC1h 55m
2026-06-08 N782SN - Jun 8, 20:00 UTCJun 8, 20:20 UTC20m
2026-06-08 N782SN - Jun 8, 17:55 UTCJun 8, 18:05 UTC10m
2026-06-05 N782SN - Jun 5, 21:45 UTCJun 5, 23:00 UTC1h 15m
2026-06-05 N782SN - Jun 5, 18:15 UTCJun 5, 20:10 UTC1h 55m
2026-06-04 N782SN - Jun 4, 21:50 UTCJun 4, 23:40 UTC1h 50m
2026-06-04 N782SN - Jun 4, 19:35 UTCJun 4, 19:55 UTC20m
2026-06-04 N782SN - Jun 4, 18:00 UTCJun 4, 18:55 UTC55m
2026-06-03 N782SN - Jun 3, 22:25 UTCJun 4, 01:10 UTC2h 45m
2026-06-02 N782SN - Jun 2, 23:00 UTCJun 3, 01:55 UTC2h 55m
2026-06-01 N782SN - Jun 1, 21:45 UTCJun 1, 23:40 UTC1h 55m

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 N782SN page for operator, model, and routing details .

Mode-S AA9991 frequently asked

What is Mode-S code AA9991?
AA9991 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N782SN.
Where is Mode-S AA9991 registered?
Mode-S code AA9991 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 AA9991 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9991, octal 52514621, decimal 11,180,433.
What flights does AA9991 operate?
Mode-S AA9991 has broadcast 1 distinct callsign, including N782SN.