N4121D — 1957 Helio H-391B
Active registrationChecked against FAA & NTSB records · as of Jul 28, 2026
N4121D has no NTSB accident records on file. Registration data compiled from public FAA records as of Jul 28, 2026.
Aircraft record
- Serial number
- 041
- Manufacturer
- Helio
- Model
- H-391B
- Year
- 1957
- Category
- Fixed wing single-engine
- Engine
- Lycoming Go-435c&d Ser
- Registration
- Active
- Registered to
- Sessions John L — Kirbyville, TX
Accident & incident history
No NTSB accident records on file.
Registration timeline
Ownership and registration events for this airframe (the 1957 Helio H-391B).
- Mar 22, 2012registered — Sessions John L
Frequently asked
- Has N4121D been in an accident?
- No NTSB accident records are on file for N4121D.
- What kind of aircraft is N4121D?
- N4121D is a 1957 Helio H-391B (fixed wing single-engine), serial number 041.
- Who is N4121D registered to?
- N4121D is registered to Sessions John L of Kirbyville, TX. Registration status: active.
The full N4121D 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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