N441MM — Learjet Inc 45
Active registrationChecked against FAA & NTSB records · as of Jul 22, 2026
N441MM appears in 1 NTSB accident record (most recent 2015, serious injuries). Registration and accident data compiled from public FAA and NTSB records as of Jul 22, 2026.
Aircraft record
- Serial number
- 599
- Manufacturer
- Learjet Inc
- Model
- 45
- Category
- Fixed wing multi-engine
- Registration
- Active
- Registered to
- Marquis Aviation Llc — Hennepin, IL
Accident & incident history
The pilot’s inadequate preflight planning and his subsequent decision to attempt to climb over rising terrain with the helicopter over maximum gross weight while operating in high-density altitude conditions with a tailwind, which resulted in its inability to maintain a positive climb rate and a subsequent impact with terrain.
Registration timeline
Ownership and registration events for this airframe (the Learjet Inc 45).
- Oct 18, 2025registered — Marquis Aviation Llc
Earlier aircraft on this N-number
The tail number N441MM was previously assigned to different aircraft. A registration number can be reused across unrelated airframes over decades — these are not the Learjet Inc 45 above.
- until Jun 2, 20202000 Robinson Helicopter R22 BETA (s/n 3057)
- until Jan 10, 1990Cessna 441 (s/n 4410030)
Frequently asked
- Has N441MM been in an accident?
- Yes. N441MM appears in 1 NTSB accident record, the most recent in 2015.
- What kind of aircraft is N441MM?
- N441MM is a Learjet Inc 45 (fixed wing multi-engine), serial number 599.
- Who is N441MM registered to?
- N441MM is registered to Marquis Aviation Llc of Hennepin, IL. Registration status: active.
The full N441MM report
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- Full NTSB investigation narratives for all 1 record — 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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