N491SA — 2009 Robinson Helicopter Company R44 II
Active registrationChecked against FAA & NTSB records · as of Oct 29, 2026
N491SA has no NTSB accident records on file. Registration data compiled from public FAA records as of Oct 29, 2026.
Aircraft record
- Serial number
- 12831
- Manufacturer
- Robinson Helicopter Company
- Model
- R44 II
- Year
- 2009
- Category
- Rotorcraft
- Engine
- Lycoming Io-540-ae1a5
- Registration
- Active
- Registered to
- Shier Aviation Corp Dba — San Diego, CA
Accident & incident history
No NTSB accident records on file.
Registration timeline
Ownership and registration events for this airframe (the 2009 Robinson Helicopter Company R44 II).
- Jul 10, 2009registered — Shier Aviation Corp Dba
- Jul 10, 2009registered — Shier Aviation Corp Dba
- Aug 26, 2026deregistered
Earlier aircraft on this N-number
The tail number N491SA was previously assigned to a different aircraft. A registration number can be reused across unrelated airframes over decades — these are not the 2009 Robinson Helicopter Company R44 II above.
- until Jun 2, 20051966 Douglas DC9-15 (s/n 45799)
Frequently asked
- Has N491SA been in an accident?
- No NTSB accident records are on file for N491SA.
- What kind of aircraft is N491SA?
- N491SA is a 2009 Robinson Helicopter Company R44 II (rotorcraft), serial number 12831.
- Who is N491SA registered to?
- N491SA is registered to Shier Aviation Corp Dba of San Diego, CA. Registration status: active.
The full N491SA report
$12 $29 launch pricing
- Full NTSB investigation narratives — the complete text, not just the cause line
- Pre-buy question list generated from this aircraft’s actual records
- Complete registration & deregistration timeline, print-ready
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