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sensors Mode-S transponder

AAD249

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N797CS · BOMBARDIER BD-100 Challenger 300 · operated by RITCHIE PARK LLC

Hex
AAD249
Octal
52551111
Decimal
11,194,953
Country
US
Tail
N797CS
Type
CL30
No current signal · last broadcast 1d ago
Flights observed
88
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AAD249.

Country allocation

The ICAO 24-bit address AAD249 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
N797CS - 88 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N797CS - Jul 23, 02:50 UTCJul 23, 03:40 UTC50m
2026-07-23 N797CS - Jul 23, 01:10 UTCJul 23, 02:10 UTC1h 0m
2026-07-21 N797CS - Jul 21, 17:40 UTCJul 21, 18:35 UTC55m
2026-07-21 N797CS - Jul 21, 14:15 UTCJul 21, 15:05 UTC50m
2026-07-20 N797CS - Jul 20, 00:35 UTCJul 20, 00:55 UTC20m
2026-07-19 N797CS - Jul 19, 23:00 UTCJul 19, 23:50 UTC50m
2026-07-19 N797CS - Jul 19, 21:20 UTCJul 19, 22:05 UTC45m
2026-07-19 N797CS - Jul 19, 04:25 UTCJul 19, 05:10 UTC45m
2026-07-18 N797CS - Jul 18, 15:30 UTCJul 18, 16:10 UTC40m
2026-07-17 N797CS - Jul 17, 00:04 UTCJul 17, 01:00 UTC55m
2026-07-16 N797CS - Jul 16, 22:05 UTCJul 16, 22:59 UTC55m
2026-07-16 N797CS - Jul 16, 20:55 UTCJul 16, 21:35 UTC40m
2026-07-15 N797CS - Jul 15, 22:45 UTCJul 15, 23:40 UTC55m
2026-07-14 N797CS - Jul 14, 16:40 UTCJul 14, 17:35 UTC55m
2026-07-14 N797CS - Jul 14, 14:10 UTCJul 14, 15:05 UTC55m
2026-07-12 N797CS - Jul 12, 18:05 UTCJul 12, 20:45 UTC2h 40m
2026-07-12 N797CS - Jul 12, 14:10 UTCJul 12, 16:45 UTC2h 35m
2026-07-11 N797CS - Jul 11, 01:30 UTCJul 11, 02:25 UTC55m
2026-07-10 N797CS - Jul 10, 22:45 UTCJul 10, 23:45 UTC1h 0m
2026-07-09 N797CS - Jul 9, 16:40 UTCJul 9, 17:35 UTC55m
2026-07-09 N797CS - Jul 9, 13:50 UTCJul 9, 14:45 UTC55m
2026-07-05 N797CS - Jul 5, 20:15 UTCJul 5, 21:30 UTC1h 15m
2026-07-05 N797CS - Jul 5, 19:05 UTCJul 5, 19:35 UTC30m
2026-07-05 N797CS - Jul 5, 16:15 UTCJul 5, 17:05 UTC50m
2026-07-04 N797CS - Jul 4, 18:20 UTCJul 4, 19:35 UTC1h 15m
2026-07-04 N797CS - Jul 4, 16:30 UTCJul 4, 17:45 UTC1h 15m
2026-07-03 N797CS - Jul 3, 01:15 UTCJul 3, 02:05 UTC50m
2026-07-02 N797CS - Jul 2, 23:35 UTCJul 3, 00:30 UTC55m
2026-07-01 N797CS - Jul 1, 20:25 UTCJul 1, 21:15 UTC50m
2026-07-01 N797CS - Jul 1, 18:50 UTCJul 1, 19:40 UTC50m
2026-06-30 N797CS - Jun 30, 16:40 UTCJun 30, 17:35 UTC55m
2026-06-30 N797CS - Jun 30, 13:55 UTCJun 30, 14:50 UTC55m
2026-06-28 N797CS - Jun 28, 21:55 UTCJun 28, 22:59 UTC1h 5m
2026-06-28 N797CS - Jun 28, 20:29 UTCJun 28, 20:50 UTC20m
2026-06-28 N797CS - Jun 28, 18:00 UTCJun 28, 19:14 UTC1h 15m
2026-06-26 N797CS - Jun 26, 01:05 UTCJun 26, 02:00 UTC55m
2026-06-25 N797CS - Jun 25, 23:24 UTCJun 26, 00:15 UTC50m
2026-06-23 N797CS - Jun 23, 15:30 UTCJun 23, 16:20 UTC50m
2026-06-23 N797CS - Jun 23, 00:19 UTCJun 23, 01:15 UTC55m
2026-06-22 N797CS - Jun 22, 22:10 UTCJun 22, 23:05 UTC55m
2026-06-22 N797CS - Jun 22, 19:44 UTCJun 22, 20:34 UTC50m
2026-06-21 N797CS - Jun 21, 20:34 UTCJun 21, 21:24 UTC50m
2026-06-21 N797CS - Jun 21, 19:09 UTCJun 21, 20:00 UTC50m
2026-06-20 N797CS - Jun 20, 00:54 UTCJun 20, 01:44 UTC50m
2026-06-19 N797CS - Jun 19, 23:49 UTCJun 20, 00:14 UTC25m
2026-06-19 N797CS - Jun 19, 21:30 UTCJun 19, 22:34 UTC1h 5m
2026-06-17 N797CS - Jun 17, 17:40 UTCJun 17, 19:00 UTC1h 20m
2026-06-17 N797CS - Jun 17, 15:20 UTCJun 17, 16:10 UTC50m
2026-06-11 N797CS - Jun 11, 23:45 UTCJun 12, 00:35 UTC51m
2026-06-11 N797CS - Jun 11, 22:15 UTCJun 11, 23:10 UTC55m

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 N797CS page for operator, model, and routing details .

Mode-S AAD249 frequently asked

What is Mode-S code AAD249?
AAD249 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N797CS.
Where is Mode-S AAD249 registered?
Mode-S code AAD249 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 AAD249 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAD249, octal 52551111, decimal 11,194,953.
What flights does AAD249 operate?
Mode-S AAD249 has broadcast 1 distinct callsign, including N797CS.