N4121D — 1957 Helio H-391B Data
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aircraft record found
N4121D
1957 Helio H-391B, c/n 041
N4121D is a 1957 Helio H-391B (serial number 041). It is configured with 1 engine and 4 seats. Registration status is listed as In Question, with ownership recorded under REGISTRATION PENDING in Weirsdale, FL, United States. The profile includes 27 photos documenting this aircraft.
Latest photos of N4121D
Airframe Info
| Manufacturer | Helio |
| Model | H-391B Search all Helio H-391B |
| Year built | 1957 |
| Construction Number (C/N) | 041 |
| Aircraft Type | Fixed wing single engine |
| Number of Seats | 4 |
| Number of Engines | 1 |
| Engine Type | Reciprocating |
| Engine Manufacturer and Model | Lycoming GO-435C&D SER |
Aircraft
| Registration Number | N4121D |
| Mode S (ICAO24) Code | a4de0d |
| Certification Class | Standard |
| Air Worthiness Test | 1957-01-04 |
| Last Action Taken | 2026-08-08 |
| Current Status | In Question |
Owner
| Registration Type | Individual |
| Address |
Weirsdale, FL 321953158 United States |
| Region | Southern |