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sensors Mode-S transponder

AA950D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N781JH · operated by JACK HENRY & ASSOCIATES

Hex
AA950D
Octal
52512415
Decimal
11,179,277
Country
US
Tail
N781JH
No current signal · last broadcast Jul 24, 22:20 UTC
Flights observed
111
Distinct callsigns
1
Country
US
Last broadcast
Jul 24, 22:20 UTC

Last known position

Most recent position reported by Mode-S AA950D.

Country allocation

The ICAO 24-bit address AA950D 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
N781JH - 111 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N781JH - Jul 24, 21:05 UTCJul 24, 22:20 UTC1h 15m
2026-07-24 N781JH - Jul 24, 19:10 UTCJul 24, 20:25 UTC1h 15m
2026-07-22 N781JH - Jul 22, 19:25 UTCJul 22, 22:30 UTC3h 5m
2026-07-22 N781JH - Jul 22, 17:40 UTCJul 22, 18:30 UTC50m
2026-07-22 N781JH - Jul 22, 11:40 UTCJul 22, 12:25 UTC45m
2026-07-21 N781JH - Jul 21, 21:45 UTCJul 21, 22:35 UTC50m
2026-07-21 N781JH - Jul 21, 18:50 UTCJul 21, 20:35 UTC1h 45m
2026-07-21 N781JH - Jul 21, 17:25 UTCJul 21, 17:55 UTC30m
2026-07-16 N781JH - Jul 16, 23:25 UTCJul 17, 02:25 UTC3h 0m
2026-07-16 N781JH - Jul 16, 20:05 UTCJul 16, 22:59 UTC2h 55m
2026-07-16 N781JH - Jul 16, 15:10 UTCJul 16, 18:59 UTC3h 50m
2026-07-15 N781JH - Jul 15, 21:00 UTCJul 15, 23:55 UTC2h 55m
2026-07-14 N781JH - Jul 14, 01:10 UTCJul 14, 04:05 UTC2h 55m
2026-07-13 N781JH - Jul 13, 21:35 UTCJul 14, 00:35 UTC3h 0m
2026-07-13 N781JH - Jul 13, 17:10 UTCJul 13, 20:05 UTC2h 55m
2026-07-13 N781JH - Jul 13, 12:35 UTCJul 13, 16:25 UTC3h 50m
2026-07-10 N781JH - Jul 10, 21:20 UTCJul 10, 22:20 UTC1h 0m
2026-07-10 N781JH - Jul 10, 20:10 UTCJul 10, 20:50 UTC40m
2026-07-10 N781JH - Jul 10, 17:00 UTCJul 10, 19:40 UTC2h 40m
2026-07-09 N781JH - Jul 9, 18:25 UTCJul 9, 20:55 UTC2h 30m
2026-07-09 N781JH - Jul 9, 17:15 UTCJul 9, 17:55 UTC40m
2026-07-08 N781JH - Jul 8, 19:30 UTCJul 8, 22:00 UTC2h 30m
2026-07-07 N781JH FCM → HPN Jul 7, 18:45 UTCJul 7, 22:15 UTC3h 30m
2026-07-07 N781JH - Jul 7, 17:20 UTCJul 7, 17:50 UTC30m
2026-07-07 N781JH - Jul 7, 14:55 UTCJul 7, 16:45 UTC1h 50m
2026-07-06 N781JH - Jul 6, 19:10 UTCJul 6, 19:45 UTC35m
2026-06-27 N781JH - Jun 27, 20:24 UTCJun 27, 21:10 UTC45m
2026-06-21 N781JH - Jun 21, 17:20 UTCJun 21, 18:00 UTC40m
2026-06-19 N781JH - Jun 19, 15:14 UTCJun 19, 16:19 UTC1h 5m
2026-06-19 N781JH - Jun 19, 13:20 UTCJun 19, 14:29 UTC1h 10m
2026-06-18 N781JH - Jun 18, 00:10 UTCJun 18, 03:45 UTC3h 35m
2026-06-17 N781JH - Jun 17, 22:30 UTCJun 17, 23:20 UTC50m
2026-06-17 N781JH - Jun 17, 12:05 UTCJun 17, 12:50 UTC45m
2026-06-16 N781JH - Jun 16, 23:30 UTCJun 17, 00:15 UTC45m
2026-06-16 N781JH - Jun 16, 11:40 UTCJun 16, 13:40 UTC2h 0m
2026-06-15 N781JH - Jun 15, 21:30 UTCJun 15, 23:09 UTC1h 40m
2026-06-12 N781JH - Jun 12, 19:30 UTCJun 12, 22:50 UTC3h 20m
2026-06-12 N781JH - Jun 12, 17:20 UTCJun 12, 19:00 UTC1h 40m
2026-06-12 N781JH - Jun 12, 14:35 UTCJun 12, 15:25 UTC50m
2026-06-11 N781JH - Jun 11, 23:45 UTCJun 12, 00:10 UTC25m
2026-06-11 N781JH - Jun 11, 21:55 UTCJun 11, 23:10 UTC1h 15m
2026-06-11 N781JH - Jun 11, 02:45 UTCJun 11, 04:15 UTC1h 30m
2026-06-11 N781JH - Jun 11, 00:05 UTCJun 11, 02:00 UTC1h 55m
2026-06-10 N781JH - Jun 10, 16:25 UTCJun 10, 19:25 UTC3h 0m
2026-06-10 N781JH - Jun 10, 01:45 UTCJun 10, 02:25 UTC40m
2026-06-08 N781JH - Jun 8, 21:25 UTCJun 8, 23:45 UTC2h 20m
2026-06-08 N781JH - Jun 8, 15:04 UTCJun 8, 17:30 UTC2h 25m
2026-06-08 N781JH - Jun 8, 13:50 UTCJun 8, 14:25 UTC35m
2026-06-05 N781JH - Jun 5, 21:00 UTCJun 5, 22:15 UTC1h 15m
2026-06-05 N781JH - Jun 5, 19:10 UTCJun 5, 20:30 UTC1h 20m

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 N781JH page for operator, model, and routing details .

Mode-S AA950D frequently asked

What is Mode-S code AA950D?
AA950D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N781JH.
Where is Mode-S AA950D registered?
Mode-S code AA950D 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 AA950D broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA950D, octal 52512415, decimal 11,179,277.
What flights does AA950D operate?
Mode-S AA950D has broadcast 1 distinct callsign, including N781JH.