| Tail Number / N-Number | N51850 |
| Manufacturer | TEXAS HELICOPTER CORP |
| Model | OH-13E/M74 |
| Year Built | 1978 |
| Manufacturer's Serial Number | 78-018 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | VO-435 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Type of Registrant | Corporation |
| Owner Name | HENDRICKSON FLYING SERVICE INC |
| Street | 21532 QUINTA RD |
| City | ROCHELLE |
| State | IL |
| Zip Code | 61068 |
| Region | Great Lakes |
| County | Ogle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1978-07-31 |
| Certificate Issue Date | 2011-05-14 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 51501107 |
| Mode S Code Hex | A68247 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N51850.
| Tail Number / N-Number | N51850 |
| Manufacturer | FAIRCHILD |
| Model | M-62A |
| Year Built | 1942 |
| Manufacturer's Serial Number | T42-3234 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MENSCH C W |
| Street | 120 HORNBLOWER AVENUE |
| City | BELLEVILLE |
| State | NJ |
| Zip Code | 07109 |
| Region | Eastern |
| County | Ogle County |
| Certificate Issue Date | 1948-04-01 |
| Last Status | Valid Registration |
| Cancellation Date | 1955-10-24 |